Abstract
Since the late 1950’s when proton n. m. r. spectroscopy was first used in organic natural products studies the technique has increasingly contributed to the rapid advancement of this important area of chemistry. Although the potential utility of 13C n. m. r. was recognized very early, essentially no application of 13C n. m. r. appeared in the literature prior to 1966 and 95% of the existing data are less than five years old. The initially slow growth had its cause in inadequate instrumentation, insufficient sensitivity being the main obstacle. This situation drastically changed with the advent and commercial availability of broadband excitation and Fourier transform methods, giving natural-abundance 13C n. m. r. and its numerous chemical applications a tremendous impetus. Today 13C spectra can be recorded on sample quantities down to the submilligram level, which until recently even withstood proton n. m. r.
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Dreyer, D. L.. R. D. Bennett, and S. C. Basa: Limonoids from Atalantia monophylla, Isolation and Structure. Tetrahedron 32, 2367 (1976).
Zanno, P., 1. Miura, K. Nakanishi, and P. L. Elder: Structure of the Insect Phagorepellent Azadirachtin. Application of Prft/Cwd Carbon-13 Nuclear Magnetic Resonance. J. Amer. Chem. Soc. 97, 1975 (1975).
Borremans, F., M. DE Potter, and D. DE Keukelfire: Carbon-13 Nmr Spectroscopy of Hop Bitter Substances. Org. Magn. Res. 7, 415 (1975).
Radics, L., M. Kaitar-Peredy, S. NozoE, and H. KoBayasi: Carbon-13 Nuclear Magnetic Resonance Spectra of Ophibolins. Tetrahedron Letters 4414 (1975).
Knight, S. A.: Carbon-13 Nmr Spectra of Some Tetra-and Pentacyclic Triterpenoids. Org. Magn. Res. 6, 603 (1974).
Jones, A. J., P. F. Alewood, M. Benn, and J. Wong: Funclionalization of the 4a-Methyl Group of Lanostanol via Azidoformate Thermolysis. Tetrahedron Letters 1655 (1976).
KtIuong-Huu, F., M. Sangare, V. M. Chari, A. Bekaert, M. Devys, M. Barbier, and G. Lukacs: Carbon-13 Nuclear Magnetic Resonance Spectral Analysis of Cycloartanol and Related Compounds. Tetrahedron Letters 1789 (1975).
Radios, L.. M. Kajtar-Peredy, S. Corsano, and L. Standoli: Carbon-13 Nmr Spectra of Some Polycyclic Triterpenoids. Tetrahedron Letters 4287 (1975).
Totu, K., S. Seo. A. Shimaoka, and Y. Tomita: Carbon-13 Nmr Spectra of Olean-12-enes. Full Signal Assignments Including Quaternary Carbon Signals Assigned by Use of Indirect 13C, 1H Spin Couplings. Tetrahedron Letters 4227 (1974).
Seo, S., Y Tomita, and K. Tort: Carbon-I3 Nmr Spectra of Urs-l2-enes and Application to Structural Assignments of Compounds of Lsodon japonicus Hara Tissue Cultures. Tetrahedron Letters 7 (1975).
Seo, S., Y. Tomita, and K. Tori: Biosynthesis of Ursene-type Triterpenes from Sodium[1,2–13C]-Acetate in Tissue Cultures of Lsodon japonicuc Hara and Reassignments of 13C N.m.r. Signals in Urs-12-eves. J. C. S. Chem. Commun. 954 (1975).
Tort, K., Y. Yoshimura, S. Seo, K. Sakurawt, Y. Tomita, and H. Ishii: Carbon-13 Nmr Spectra of Saikogenins. Stereochemical Dependence of Hydroxylation Effects upon Carbon-13 Chemical Shifts of Oleanene-Type Triterpenoids. Tetrahedron Letters 4163 (1976).
foRI, K., S. Seo, Y. Yoshimura, M. Nakamura, Y. Tomita, and H. IsItm1: Carbon-13 Nmr Spectra of Saikosaponins A, C, D and F, Isolated from Buplearum falcatum L. Tetrahedron Letters 4167 (1976).
Nakanishi, K., V. P. Gullo, I. Miura, T. R. Govindachari, and N, Viswanath.AN: Structure of two Triterpenes. Application of Partially Relaxed Fourier Transform LsC Nuclear Magnetic Resonance. J. Amer. Chem. Soc. 95, 6473 (1973).
Eggert, H., C. L. Van Antwerp, N. S. Bracca, and C. Djerassi: Carbon-13 Nuclear Magnetic Resonance Spectra of Hydroxy Steroids. J. Org. Chem. 41, 71 and 4051 (1976).
Blunt. J. W.: Carbon-13 Nmr Spectra of 6(1-Substituted 5x-cholestan-313.5-diols: y-and S-Effects. Aust. J. Chem. 28, 1017 (1975).
Cushley, R. J., and J. D. FtuPenko: 13C Fourier Transfor N.M.R. Xiii. Reassignment of the 13C Spectrum of Ergosterol. Org. Magn. Res. 8, 308 (1976).
Abraham, R. J., and J. R. MoNasterios: 13C Nuclear Magnetic Resonance Spectra of some Ergosta-dienes and -trienes. J. C. S. Perkin II, 662 (1974).
Hanson, J. R., and M. Siverns: 13C Nuclear Magnetic Resonance Spectra of Some Steroidal Unsaturated Ketones. J. C. S. Perkin I, 1956 (1975).
Letourneux, Y., Q. Khuong-Huu, M. Gut, and G. Lukacs: Identification of C-22 Epimers in Steroids by Carbon-13 Nuclear Magnetic Resonance Spectroscopy. J. Org. Chem. 40, 1674 (1975).
Anderson, W. G., C. Y. Byon, M. Gut, and F. H. Bissett: 13C Nmr Studies of the Four 20,22-Epoxy-cholesterols and the Two 20(22)-Dehydrocholesterols. Tetrahedron Letters 2193 (1976).
Bannai, K., M. Morisaki, and N. Ikekawa: Studies on Steroids. Part. 37. Synthesis of the Four Stereoisomers of 20.22-Epoxycholesterol. J. C. S. Perkin 1, 2116 (1976).
Lori, K., H. IsHH, Z. W. WoLkowsKI, C. Chachaty, M. SangarÉ. F. Piriou, and G. Lukacs: Carbon-13 Nuclear Magnetic Resonance Spectra of Cardenolide. Tetrahedron Letters 1077 (1973).
Wray, V., and S. Lang: Fourier Transform’ 3C Nuclear Magnetic Resonance Studies of Steroids. II. Derivatives of l7ß-(2.5-Dihydro-5-oxo-3-furyl)-313,5a,6-triandrostane. Tetrahedron 31, 2815 (1975).
Eggert, H., and C. Djerassc “C Nmr Spectra of Sapogenins. Tetrahedron Letters 3635 (1975).
Oisif, M., Z. Djarmati, and S. W. Pelletier: Carbon-13 Nuclear Magnetic Resonance Spectroscopy of Polycyclic S-Lactones. J. Org. Chem. 41, 1219 (1976).
Shriver, J., E. W. Abrahamson, and G. D. Mateescu: The Structure of Visual Pigments. I. Carbon-13 Nuclear Magnetic Resonance Spectroscopy of N-all-transRetinylidene propylimine and Its Protonated Species. J. Amer. Chem. Soc. 90, 2407 (1976).
Inoue, Y., A. Takahashi, Y. TokitÔ, R. CHÔIÔ, and Y. MtYoshi: Carbon-13 Nmr Spectra of Retinal-1 and Its Related Compounds. Org. Magn. Res. 6, 487 (1974).
Englert, G.: A 13C-Nmr study of cis-trans Isomeric Vitamin A, Carotenoids and Related Compounds. Helv. Chim. Acta 58, 2367 (1975).
FtscHLt, A., and H. Mayer: Carotinoidsynthesen über Sulfone: Synthese von (3-Carotin. Hell/. Chim. Acta 58, 1584 (1975).
VÖGeli, U., W. Eschenmoser, and C. H. Eugster: Strukturbestimmung von OMethylazafrinmethylester durch 13C-Nmr-Spektroskopie. Helv. Chim. Acta 58, 2044 (1975).
Baranyai, M., J. Szabolcs, G. Toni, and L. Radios: Determination of the Geometrical Configuration of the Polyene Chain of Mono cis C,0 Carotenoids - I. A 13C Nmr Study of Mono cis Zeaxantins and Mono cis Capsorubins. Tetrahedron 32, 867 (1976).
Barlow, L., and G. Pattenden: Synthesis of Poly-Z-isomers of 2,6,11,15-Tetramethylhexadeca-2,6,8,10,14-pentaene, a C,0 Analogue of Phytoene. Re-examination of the Stereochemistry of a New Isomer of Phytoene from Rhodospirillum rubrum. J. C. S. Perkin I, 1029 (1976).
Wenkert, E., D. W. Cocsiran, E. W. Hagaman, F. M. Schell, N. Neuss, A. S. Katner, P. Potier, C. Kan, M. Plat, M. Koch, H. Mehrt, J. Poisson, N. Kunesch, and Y. Rolland: Carbon-13 Nuclear Magnetic Resonance Spectroscopy of Naturally Occurring Substances. Xix. Aspidosperma Alkaloids. J. Amer. Chem. Soc. 95, 4990 (1973).
Ahond, A.. M.-N. Janot, N. Langlois, G. Lukacs, P. Potier, P. Rasoanaivo, M. SangarÉ, N. Neuss, M. Plat, J. LE Men, E. W. Hagaman, and E. Wenkert: On the Structure of Vindolinine. J. Amer. Chem. Soc. 96, 633 (1974).
Damak, M., A. Abond, and P. Potier: Révision de la Structure de la Mélobaline. Tetrahedron Letters 167 (1976).
Rasoanaivo, P., and G. Lukacs: Revision of the Structure of the Bisindole Alkaloid 14’,15’-Dihydro-Pycnanthine. A Carbon-13 Nuclear Magnetic Resonance Study. J. Org. Chem. 41, 376 (1976).
Wenkert, E., C. J. Chang, H. P. S. Chawla, D. W. Cochran, E. W. Hagaman, J. C. King, and K. OwTo: General Methods of Synthesis of Indole Alkaloids. l4. Short Routes of Construction of Yohimboid and Ajmalicinoid Alkaloid Systems and Their 13C Nuclear Magnetic Resonance Spectral Analysis. J. Amer. Chem. Soc. 98, 3645 (1976).
KocH, M. C., M. M. Plat, N. PRÉAux, H. E. Gottlieb, E. W. Hagaman, F. M. Schell, and E. Wenkert: Carbon-13 Nuclear Magnetic Resonance Spectroscopy of Naturally Occurring Substances. Xxxiii. The Ochrofuanines and Emetine. J. Ore. Chem. 40, 2836 (1975).
Merlini, L., R. Mondelli, G. Nasini, F. W. Wehrli, E. W. Hagaman, and E. Wenkert: 13C Nmr. Analysis of the Roxburghines. HeIv. Chim. Acta 59, 2254 (1976).
Damak, M., A. Ahond, P. Potier, and M.-M. Janot: Structure d’un Alcaloide Indolique Ancien: la Geissoschizine, Tetrahedron Letters 4731 (1976).
Hutchinson, C. R., M.-T. S. Hsia, A. H. Heckendorf, and G. J. O’Loughlin: A Biomimetic Synthesis of the Camptothecin Chromophore. J. Org. Chem. 41, 3493 (1976).
Hofheinz, AV., P. Schonholzer, and K. Bfrnauer: Überführung des (-)-Tabersonins in ein Indola[2,3-b]chinolizin, eine bemerkenswerte molekulare Umwandlung. Hely. Chim. Acta 59, 1213 (1976).
LÉvY, J., C. Pierron, G. Lukacs, G. Massiot, and J. LE Men: Méthylène-Indolines, Indolénines et Indoléniums. XI. Nouveau Réarrangement de la Chloro-I6 Déhydro-1 Tabersonine. Tetrahedron Letters 669 (1976).
Khuong-Huu, F., M. Cesatuo, J. Guilhem, and R. Goutarel: Alcaloides Indoliques. Cii. Deux Nouveaux Types d’Alcaloides lndoliques, l’lbophyllidinc, Dérivé du Nor-21(+)pandolane et 1-Iboxyphylline, Dérivé de l’Abeo-21(20-i-19)(+)pandolane, Retirés des Feuilles de Tabernanthe ihoya Baillon et de T. subsessilis Stapf. Tetrahedron 32, 2539 (1976).
Srinivasan, P. R., and R. L. Lighter: 13C Nmr Spectral Studies of Arecoline, Hordenine, Strychnine and Brucine. Org. Magn. Res. 8, 198 (1976).
Neuss, N., H. E. Boaz, J. L. Occ’oLowITz, E. Wenkert, E. M. Schell, P. Potier, C. Kan, N. M. Plat, and M. Plat: The Structure of Vincarodine. Hely. Chico. Acta 56, 2660 (1973).
Bombardllli, E., A. BoNati, B. Gabetta, E. M. Martinew, and G. MusttcH: The Structure of Cuanzine. Tetrahedron 30, 4141 (1974).
Lt. Men, J., M. J. IloizEY, G. Lukacs, L. LE Men-Olivier, and J. Ltvs: Structure de la l’andine. Alcaloide Hexacyclique du Type 9’-Vincadilformine. Tetrahedron Letters 3119 (1974).
Kan-Kan, C., G. Massiot, A. Ahond, B. C. Das, H.-P. Husson, and P. Potier: Structure and Biogenetic-type Synthesis of Andran_inine: an Indole Alkaloid of a New Type. J. C. S. Chem. Commun. 164 (1974).
Langlois, Y., F. Gueritte, R. Z. Andriamialisoa, N. Langlois, P. Potier, A. Chiaroni, and C. Riche: Réarrangement du Squelette de la Catharanthine. Tetrahedron 32, 945 (1976).
Ahond, A., A.-M. But, P. Potier, E. W. Hagaman, and E. Wenkert: Carbon-l3 Nuclear Magnetic Resonance Analysis of Vobasine-like Indole Alkaloids. J. Org. Cheng. 41, 1878 (1976).
Wenkert, E., D. W. Cochran, H. E. Gottlieb, E. W. Hagaman, R. B. Filho, F. J. D. A. Matos, and M. I. L. M. Madruga: “C-Nmr Spectroscopy of Naturally Occurring Substances. Xlv. Iboga Alkaloids. liely. Chim. Acta 59, 2437 (1976).
Wenkert, E., E. W. Hagaman, N. Kunesch, N. Wang. and B. Zsadon: 13C Nmr Spectroscopy of Naturally Occurring Substances. Xlii. Conformational Analysis of Quebrachamine-like Indole Alkaloids and Related Substances. Hely. Chim. Acta 59, 2711 (1976).
Bruneton, J., A. CavÉ, E. W. Hagaman, N. Kunesch, and E. Wenkert: The Carbon-20 Stereochemistry of Pandoline and Epipandoline. Tetrahedron Letters 3567 (1976).
Wenkert, E., E. W. Hagaman, B. Lal, G. E. Gutowski, A. S. Katner, J. C. Miller, and N. Neuss: “C-Nmr Spectroscopy of Naturally Occurring Substances. Xxxii. Vincaleucoblastine and Related Alkaloids. Hely. Chim. Acta 58, 1560 (1975).
Dorman. D. E.. and J. W. Paschal: 13C Nmr Spectroscopy: Comparison of the Spectra of Some Dimeric Catharanthus Alkaloids and their Derivatives. Org. Magn. Res. 8, 413 (1976).
Tafur, S. S., J. L. Occolowliz, T. K. Elzey, J. W. Paschal, and D. E. Dorman: Alkaloids of Vinca rosea L. (Catharanthus roseas G. Don). Xxxvii. Structure of Vincathicine. J. Org. Chem. 41, 1001 (1975).
CavÉ, A., J. Bruneton, A. Ahond, A.-M. But, H.-P. Husson, C. Kan, G. Lukacs, and P. Potier: Structure Analysis by 13C Nmr Spectroscopy of Criophylline. A New Dimeric Indole Alkaloid. Tetrahedron Letters 5081 (1973).
Das, B. C., J. P. CossoN, G. Lukacs, and P. Potier: Structure Analysis by “C Nmr Spectroscopy of Pleiocorine, a New Bisindole Alkaloid from Alctonia deplanehei van Heurck et Muell. Arg. Tetrahedron Letters 4299 (1974).
Damak, M., A. Ahond, H. Doucerain, and C. Riche: Bonafousine, a Novel Dimeric Indole Alkaloid: X-Ray Crystal Structure. J. C. S. Chem. Commun. 510 (1976).
Damak, M., C. Poupat, and A. Ahond: B[s[hydrOXy-11-corOnarldmyl]-l2, Nouvel Alcaloide Dimère de Type Ibogane: Elucidation de la Structure par RM“C. Tetrahedron Letters 3531 (1976), ibid. 3760 (1976).
Bombardelli, E., A. Bonati, B. Gabetta, E. M. Martinelli, G. Mustich, and B. Daniel]: Structures of Tabernaelegantines A-D and Tabernaelegantinines A and B, New Indole Alkaloids from Tabernaemontana elegans. J. C. S. Perkin I, 1432 (1976).
Rolland, Y., N. Kunesch, J. Poisson, E. W. Hagaman, F. M. Schell, and E. Wenkert: Carbon-I3 Nuclear Magnetic Resonance Spectroscopy of Naturally Occurring Substances 43. Carbon-13 Nuclear Magnetic Resonance Analysis of BisIndoline Alkaloids of Two Voacanga Species. J. Org. Chem. 41, 3270 (1976).
Bach, N. J., H. E. Boaz, E. C. Kornfeld, C.-J. Chang, H. G. Floss, E. W. Hagaman, and E. Wenkert: Nuclear Magnetic Resonance Spectral Analysis of the Ergot Alkaloids. J. Org. Chem. 39, 1272 (1974).
Zetta, L., and G. Gatti: “C Nmr Spectra of Lysergic Acid Derivatives I. l0-Methoxy-dihydrolysergic Acid Methyl Esters. Tetrahedron 31, 1403 (1975).
Moreland, C. G., A. Philip, and F. I. Carroll: Carbon-I3 Nuclear Magnetic Resonance Spectra of Cinchona Alkaloids. J. Org. Chem. 39, 2413 (1974).
Carroll, F. I., A. Phillips, and M. C. Coleman: Synthesis and Stereochemistry of a Metabolite Resulting from the Biotransformation of Quinidine in Man. Tetrahedron Letters 1757 (1976).
Daudon, M., M. H. Mehri, M. M. Plat, E. W. Hagaman, F. M. Schell, and E. Wenkert: Carbon-I3 Nuclear Magnetic Resonance Spectroscopy of Naturally Occurring Substances. Xxxiv. Monomeric Quinolinic Melodinuc Alkaloids. J. Org. Chem. 40, 2838 (1975).
Daudon, M., M. M. Mehri, M. M. Plat, E. W. Hagaman, and E. Wenkert: Carbon-13 Nuclear Magnetic Resonance Spectroscopy of Naturally Occurring Substances. 48. Dimeric Quinolinic Melodinus Alkaloids. J. Org. Chem. 41, 3275 (1976).
Hughes, D. W., H. L. Holland, and D. B. Maclean: 13C Magnetic Resonance Spectra of Some Isoquinoline Alkaloids and Related Model Compounds. Canad. J. Chem. 54, 2252 (1976).
Kametani, T., K. Fukumoto, M. ‘Tiara, A. U111E, and H. KolzuMI: Conformational Analysis of the Dibenzo [a. g.]-quinolidines by Spectroscopic Methods. J. Org. Chem. 40, 3280 (1975).
Kametani, T., A. U]Iie, M. Iiiara, K. Fukumoto, and S.-T. Lu: Studies on the Syntheses of Heterocyclic Compounds. Part Dcl. Total Synthesis of Corytenchirine. J. C. S. Perkin I, 1218 (1976).
Carroll, F. I., C. G. Moreland, G. A. Brine, and J. A. Kepler: Carbon-l3 Nuclear Magnetic Resonance Spectra of Morphine Alkaloids. J. Org. Chem. 41, 996 (1976).
Terte, Y., K. Tow, S. Maeda, and Y. K. Sawa: C-13 Nmr Spectra of Morphine Alkaloids, Codeine, Thebaine, and Sinomenine and Related Compounds. Tetrahedron Letters 2853 (1975).
Brine, G. A., D. Prakash, C. K. Hart, D. J. Kotciimar, C. G. Morel And, and F. 1. Carroll: Ring-C Conformation of 6)3-Naltrexol and 6a-Naltrexol. Evidence form Proton and Carbon-l3 Nuclear Magnetic Resonance. J. Org. Chem. 41, 3445 (1976).
Zetta, L., G. Gatti, and C. Fugantc 13C Nuclear Magnetic Resonance Spectra of Amaryllidaceae Alkaloids. J. C. S. Perkin II, 1180 (1973).
Crooks, P. A., B. Robinson, and O. Meth-Cohn: The 13C Nuclear Magnetic Resonance Spectra of Physostigmine and Related Compounds. Phytochemistry 15, 1092 (1976).
StMeral, L., and G. E. Maciel: Carbon-13 Chemical Shifts of Sonic Cholineric Neural Transmission Agents. Org. Mage. Res. 6, 226 (1974).
Lodnasmaa, M., P. M. Wovkulich, and E. Wenkert: Structures of Some Knightta deplanchei Alkaloids. J. Org. Chem. 40, 3694 (1975).
Nakashima, T. T., P. O. Singer, L. M. Browne, and W. A. Aver: Carbon-l3 Nuclear Magnetic Resonance Studies of Some Lycopodium Alkaloids. Canad. J. Chem. 53, 1936 (1975).
Van Eijk, J. L., M. H. Radema, and C. Versluts: New Quinolizìdine Alkaloids from Cadia purpurea. Tetrahedron Letters 2053 (1976).
Baxter, R. L., L. Crombie, D. J. Simmonds, and D. A. Whiting: Structures of Cathedulin-2 and Catheduline-8. New Sesquiterpene Alkaloids from Catlin edulis. J. C. S. Chem. Commun. 465 (1976).
Leboeuf, M., M. HamonniÈRE, A. Cave, H. E. Gottlieb, N. Kunesch, and E. Wenkert: The Structure of Polyalthenol, an Lndo]osesquiterpene. Tetrahedron Letters 3559 (1976).
Hart, N. K., S. R. Johns, J. A. Lamberton, H. Scares, and R. I. Willing: New Alkaloids of the eat-kaurene Type from Anopterus Species (Escalloniaceae). 1. The Structure and Reactions of Anopterine. Aust. J. Chem. 29, 1295 (1976).
Hart, N. K., S. R. Johns, J. A. Lamberton, 11. Scares, and R. I. Willing: New Alkaloids of the ent-kaurene Type from Anopteruc Species. 11. The Structure of the Minor Alkaloids. Aust. J. Chem. 29, 1319 (1976).
Pelletier, S. W., and Z. Diarmati: Carbon-13 Nuclear Magnetic Resonance: Aconitine-Type Diterpenoid Alkaloids from Aconitum and Delphinium species. J. Amer. Chem. Soc. 98, 2626 (1976).
Pelletier, S. W., N. V. Moos’, A. J. Jones, and M. H. Benn: The Structure of Alkaloid A from Delphinium bicolor Nutt. Tetrahedron Letters 3025 (1976).
Pelletier, S. W., N. V. Mods’, Z. Djarman, I. V. Migovig, and J. K. Thakkar: The Structures of Staphidine, Staphinine and Staphimine, Three Novel Bis-Diterpene Alkaloids from Delphinium staphisagria. Tetrahedron Letters 1055 (1976).
Pelletier, S. W., N. V. MoDY, Z. Djarmati, and S D. Lajsit’: The Structures of Staphigine and Staphirine. Two Novel Bis-Diterpene Alkaloids from Delphinium staphisagria. J. Org. Chem. 41, 3042 (1976).
Pelletier, S. W., Z. Djarmati, and N. V. Moly: The Structures of Staphisagnine and Staphisagrine, Two Novel Bis-Diterpene Alkaloids from Delphinium staphisagria. Tetrahedron Letters 1749 (1976).
Bird, G. J., D. J. Collins, F. W. Eastwood, B. M. K. C. Gatehouse, A. J. Jozsa, and J. M. Swan: New Steroidal Alkaloids from Solanum callium. Tetrahedron Letters 3653 (1976).
Thorpe, M. C., W. C. Coburn, JR., and J. A. Montgomery: The ‘3C Nuclear Magnetic Resonance Spectra of Some 2-, 6- and 2,6-Substituted Purines. J. Magn. Res. 15, 98 (1974).
Breitmaier, E., and W. Voelter Einflüsse von Substituenten in 6-Stellung auf die 13C-chemischen Verschiebungen der Kohlenstoffatome des Purins. Tetrahedron 30, 3941 (1974).
Chenon, M.-T., R. J. Pugmire, D. M. Grant, R. P. Panzica, and L. B. Townsend: Carbon-13 Magnetic Resonance. Xxv. A Basis Set of Parameters for the Investigation of Tautomerism in Purines Established from Carbon-l3 Magnetic Resonance Studies Using Certain Purines and Pyrrolo[2,3-d]pyrimidines. J. Amer. Chem. Soc. 97, 4627 (1975).
Carbon-I3 Magnetic Resonance. Xxvi. A Quantitative Determina- tion of the Tautomeric Populations of Certain Purines. J. Amer. Chem. Soc. 97, 4636 (1975).
Chenon, M.-T., R. P. Panzica, J. C. Smith, R. J. Pugmire, D. M. Grant, and L. B. Townsend: Carbon-13 Magnetic Resonance Spectra of C-Nucleosides. 3. Tautomerism in Formycin and Formycin B and Certain Pyrazolo[4,3-d]-pyrimidines. J. Amer. Chem. Soc. 98, 4736 (1976).
Nicolau, C., and K. Hildenbrand: 13C-Nuclear Magnetic Resonance Investigations of Xanthine and Some of its N-Methylated Derivatives. Z. Naturforsch. 29C, 475 (1974).
Bordner, J., W. E. Thiessen, H. A. Bates, and H. Rapoport: The Structure of a Crystalline Derivative of Saxitoxin. The Structure of Saxitoxin. J. Amer. Chem. Soc. 97, 6008 (1975).
Shimizu, Y., L. J. Buckley, M. Alam, Y. Oshima, W. E. Fallon, H. Kasai, I. Miura, V. P. Gullo, and K. Nakanishi: Structures of Gonyantoxin II and Ill from the East Coast Toxic Dinoflagellate Gonyaular tamareu.ci.c. J. Amer. (Them. Soc. 98, 5414 (1976).
Miller, G., and W. v. Philipsborn: 13C Nmr Spectra of Pteridines. HeIv. Chim. Acta 56, 2680 (1973).
Flack, W. F., R. Weber, and M. Viscontini: Ober Pterinchemie, 50. Mitteil. 13Cnmr-Spektren von 7,8-Dihydro-und 5,6,7,8-Tetrahydrofolsäure. Lely. Chim. Acta 57, 2658 (1974).
Lyon, J. A., R. B. Dunlap, and P. D. E7.Lis: Assignment of the Carbon-13 Nuclear Magnetic Resonance Spectra of Selected Folates. J. Mann. Res. 18, 293 (1975).
Cussans, N. J., and T. N. HuckernY: Carbon-13 Nmr Spectroscopy of Heterocyclic Compounds - II. A 20 MHz Study of Chemical Shifts and Carbon-Proton Coupling Constants for Coumarin and Some Bromacoumarins. Tetrahedron 31, 2587 (1975).
Carbon-13 Nmr Spectroscopy of Heterocyclic Compounds Iii. A 20 MHz Study of Chemical Shifts and Carbon-Proton Coupling Constants for the Methyl Coumarins. Tetrahedron 31, 2591 (1975).
Cussans, N. J., and T. N. Huckerby: Carbon-13 Nmr Spectroscopy of Heterocyclic Compounds- IV. A 20 MHz Study of Chemical Shifts and Carbon-Proton Coupling Constants in a Series of Hydroxy, Methoxy and Glucosyl Coumarins. Tetrahedron 31, 2719 (1975).
Sojka, S. A.: Carbon-13 Nuclear Magnetic Resonance Spectra of 2H-1-Benzopyran2-one (Coumarins) in Chloroform and Sulfuric Acid. J. Ora. Chem. 40, 1175 (1975).
Ernst, L.: ‘3C Nmr Spectroscopy of Polycyclic Aromatics. V1. Coumarin and the Methylcountarins. J. Magn. Res. 21, 241 (1976).
Capper, R. D.: The Carbon-13 Nuclear Magnetic Resonance Spectrum of Siderin. Tetrahedron Letters 4293 (1974).
Dreyer, D. L., K. P. Munderloh, and W. E. Thiessen: Extractives of Dalea Species (Leguminosae). Tetrahedron 31, 287 (1975).
Peti’ER, A., R. S. Ward, and T. I. Gray: The Carbon-13 Nuclear Magnetic Resonance Spectra of Flavonoids and Related Compounds. J. C. S. Perkin L 2475 (1976).
Wagner, H., V. M. Ciiari, and J. Sonnenrichler: 13C-Nmr-Spektren natürlich vorkommender Flavonoide. Tetrahedron Letters 1799 (1976).
Ternai, B., and K. R. Markham: Carhon-13 Nmr Studies of Flavonoids I. Flavones and Flavonols. Tetrahedron 32, 565 (1976).
Markham, K. R., and B. Ternai: r3C Nmr of FIaavonoids H. Flavonoids other than Flavone and Flavonol Aglycones. Tetrahedron 32, 2607 (1976).
Tort, K., T. Hirata, O. Koshitani, and T. Slga: Carhon-13 Nmr Spectral Studies of Aloenin and its Derivatives. Carbon-13 Signal Assignment Problem of 4-Methoxy2-Pyrones. Tetrahedron Letters 1311 (1976).
Burrows, B. F., W. B. Turner, and E. R. H. Walker: 8-Ethylidene-7,8-dihydro4-methoxypyrano(4,3-hJ-pyran-2.5-dione (Coarctatin), a Metabolite of Chactomium caa’cnuum. J. C. S. Perkin I, 999 (1975).
Kingsbury, C. A., M. Cliffton, and J. H. Looker: Carbon-13 Nuclear Magnetic Resonance Spectra of Kojic Acid and Other 4-Pyrone Derivatives.
Cromrif, L., G. W. Kilbef. and D. A. Whiting: Carbon-l3 Magnetic Resonance Spectra of Natural Rotenoids and their Relatives. J. C. S. Perkin I, 1497 (1975).
Brimacombe, J. S.: Nmr Spectroscopy and Conformational Features of Carbohydrates. L3C Nmr Spectroscopy. In: Specialist Periodical Report: Carbohydrates. The Chemical Society (London) 6, 169 (1973), 7, 182 (1975), 8, 171 (1976).
Ritchie, R. G. S., N. Cyr, and A. S. Perlin: Configurational Effects in 13C Chemical Shifts of 1,6-Anhydrohexapyranoses and Related Compounds. Utility of 13C-’1I Coupling Patterns for Signal Assignments. Can. J. Chem. 54, 2301 (1976).
Bock, K., and C. Pedersen: A Study of 13CH Coupling Constants in Hexapyranoses. J. C. S. Perkin II, 293 (1974).
Abbas. S. A., A. H. Haines, and A. G. Wells: Assignment of 13C and ‘H Resonance of Methyl Groups in Me Tri-O-methyl Derivatives of Methyl Pentapyranosides: Some Observations on the Methoxy 1JC Chemical Shifts. J. C. S. Perkin I, 1351 (1976).
Vignox, M. R.. and PH. J. A. VoLtero: Rmn 13C: Sur fItilisation des Esters pour l’Attribution des Carbones des Molecules Glucidiques. Tetrahedron Letters 2445 (1976).
SzArek, W. A., D. M. Vyas, S. D. Gero, and G. Lukacs: Application of Carbon-13 Nuclear Magnetic Resonance Spectroscopy to the Structural Determination of Chlorodeoxy Sugars. Can. J. Chem. 52, 3394 (1974).
Conway, E., R. D. Guthrie, S. D. Gero, G. Lukacs, and A.-M. Sepulchre: A 13C Nuclear Magnetic Resonance Chemical Shift Study of trans-Fused Hexapyranoside Derivatives. J. C. S. Perkin II, 542 (1974).
Miljkovic, M., M. Gligorhevic, T. Satoh, D. GI.Isin, and R. G. Pitcher: Carbon- 13 Nuclear Magnetic Resonance Spectra of Branched-chain Sugars. Configurational Assignment of the Branching Carbon Atom of Methyl Branched-chain Sugars. J. Org. Chem. 39, 3847 (1974).
Tow, K., S. Seo, Y. Yoshimura, H. Arita, and Y. Tossita: Glycosidation Shifts in Carbon-13 Nmr Spectroscopy: Carbon-13 Signal Shifts from Aglycone and Glucose to Glucoside. Tetrahedron Letters 179 (1977).
Kasai, R., M. Suzuo, J. I5Akawa, and O. Tanaka: Carbon-13 Chemical Shifts of Isoprenoid-0-Glucopyranosides and -13-D-Mannopyranosides. Stereochemical Influences of Aglycone Alcohols. Tetrahedron Letters 175 (1977).
Hostettmann, K., and A. Jacot-Guillarmod: Identification de Xanthones et de Nouveaux Arabinosides de C-Glucosides flavoniques dans Swertia perennis L. Heiv. Chim. Acta 59, 1584 (1976).
Colson, P., and R. R. King: The 13C Nmr Spectra of Disaccharides of D-Glucose, D-Galactose and L-Rhamnose as Models for Immunological Polysaccharides. Carbohydrate Research 47, 1 (1976).
Lalonde, R. T., C. Wong, and A. I.-M. Tsai: Polyglucosidic Metabolites of Oleaceae. The Chain Sequence of Oleoside Aglucon. Tyrosol, and Glucose Units in Three Metabolites from Fraxinus Americana. J. Amer. Chem. Soc. 98, 3007 (1976).
Breitmaier, E., and V. HoLlstein: Complete Assignment of the “C n. m. r. Spectrum of Mutarotated D-Ribose by Integration and Specific Deuteration. Org. Magn. Res. 8, 573 (1976).
Funcke, W., and A. Klemer: 13C-Nmr-Untersuchungen an Mutarotationsgleichgewichten von D-Fructose und I-Amino-l-desoxy-D-fructose-derivaten (AmadoriVerbindungen). Carbohydrate Research 50, 9 (1976).
DE Wit, G., A. D. G. Kieboom, and H. Van Bekkum: Ionization and Mutarotation of Hexoses in Aqueous Alkaline Solution as Studied by “C-Nmr Spectroscopy. Tetrahedron Letters 3943 (1975).
Yamazaki, K., M. Kaneda, and O. Tanaka: Carbon-13 Nmr Spectral Assignments of Paeoniflorin Homologues with the Aid of Spin-lattice Relaxation Times. Tetrahedron Letters 3965 (1976).
See for example p. 147 of Ref. 10.
Bock, K., and L. D. Hall: Carbon-13 Spin-lattice Relaxation Times of Some Carbohydrate Derivatives. Carbohydrate Research 40, 63 (1975).
Blunt. J. W., and M. H. G. Munro: An Automated Procedure for Qualitative and Quantitative Analysis of Mixtures by Means of Carbon Magnetic Resonance Spectroscopy, Applications to Carbohydrate Analysis. Aust. J. Chem. 29, 975 (1976).
MÜLler, J. M., H. Fuhrer, J. Gruner, und W. Voser: Stoffwechselprodukte von Mikroorganismen, 160. Mitteil. Conocandin, ein fungistatisches Antibiotikum aus Hormococcus conorum (Saco. et Roum.) Roback. HeIv. Chim. Acta 59, 2506 (1976).
Hearn, M. T. W.: The Carbon-13 Nuclear Magnetic Resonance Spectrum of Junipal. Tetrahedron Letters 2787 (1975).
Levine, S. G., R. E. Hicks, H. E. Gottlieb, and E. Wenkert: Carbon-I3 Nuclear Magnetic Resonance Spectroscopy of Naturally Occurring Substances. Xxx. Griseofulvin. J. Org. Chem. 40, 2540 (1975).
Huber, C., W. A. Court, J. P. Devlin, and O. E. Edwards: Stemphone. Tetrahedron Letters 2545 (1974).
Toma, F., F. C. Bouhet, P. Pram Van Chuong, P. Fromageot, W. Haar, H. Ruterjans, and W. Maurer: Carbon-13 Nmr Spectroscopy of the Biological Pigments Luteoskyrin and Rugulosin and Some Polyhydroxyanthraquinone Analogues. Ore. Magn. Res. 7, 496 (1975).
Kobayashi, M., Y. Terui, K. Tow, and N. Tsun: Carbon-l3 Nmr Spectra of Juglone, Naphthazarin and their Derivatives. Tetrahedron Letters 619 (1976).
Tsuji, N., M. Kobayashi, Y. Terui, and K. Tort: The Structures of Griseusins A and B, New Isochromanquinone Antibiotics. Tetrahedron 32, 2207 (1976).
Asleson, G. L., and C. W. Frank: Carbon-13 Nuclear Magnetic Resonance Spectral Analysis of Tetracycline Hydrochloride and Related Antibiotics. J. Amer. Chem. Soc. 97, 6246 (1975).
Arnone, A., G. Fronza, R. Modelli, and A. Vigevani: “C Nmr Analysis of the Antitumor Antibiotics Daunorubicin and Adriamycin. Tetrahedron Letters 3349 (1976).
Highet, R. J., G. W. Perold, and E. A. Sokoloski: Characterization of SpiroBislactonic Phenolic Metabolites of Proteaceae by 13C Nuclear Magnetic Resonance. J. Org. Chem. 41, 3860 (1976).
Martinellt, R., R. J. White, G. G. Gallo, and P. J. Beynon: Carbon-13 Nmr Spectrum Rifamycin S: A Re-examination of the Assignments with Special Reference to their Biogenetic Implication. Tetrahedron Letters 1367 (1974).
Cox, R. H., and R. J. Cole: Carbon-13 Nuclear Magnetic Resonance Studies of Fungal Metabolites, Aflatoxins and Sterigmatocystins. J. Org. Chem. 42, 112 (1977).
Kakimuma, K., B. I. Milavetz, and K. L. Rinehart, JR.: Carbon-13 Nuclear Magnetic Resonance Spectra of the Streptovaricins and Related Compounds. J. Org. Chem. 41, 1358 (1976).
Deshmukh. P. V., K. Kakimuma, J. J. Ameel, K. L. Rinehart, JR.. P. F. Wiley, and L. H. Li: Protostreptovaricins I-V. J. Amer. Chem. Soc. 98, 870 (1976).
Kakimuma, K., C. A. Hanson. and K. L. Rinehart, JR.: Spectinabitin, a New Nitrogen-Containing Metabolite Isolated from Streptomyces spectabilis. Tetrahedron 32, 217 (1976).
Koch, K. F., J. A. Rhoades, E. W. Hagaman, and E. Wenkert: Carbon-13 Nuclear Magnetic Resonance Spectral Analysis of Tobramycin and Related Antibiotics. J. Amer. Chem. Soc. 96, 3300 (1974).
Wenkert, E., and E. W. Hagaman: Carbon-13 Nuclear Magnetic Resonance Spectroscopy of Naturally Occurring Substances. Xxxix. Apramycin an Application of Amine Protonation Parameters. J. Org. Chem. 41, 701 (1976).
Nagabhushan, T. W.. W. N. Turner, P. J. L. Daniels, and J. B. Morton: The Gentamycin Antibiotics. 7. Structures of the Gentamicin Antibiotics A,, A3 and A4. J. Org. Chem. 40, 2830 (1975).
Nagabhushan, T. L., P. J. L. Daniels, R. S. Jaret, and J. B. Morton: The Gentamicin Antibiotics. 8. Structure of Gentamicin Az. J. Org. Chem. 40, 2835 (1975).
Nagabhushan, T. L., and P. J. L. Daniels: Carbon-13 Magnetic Resonance Spectroscopy and Absolute Configuration of Anomeric Center in Axially Linked 4–0- and/or 6-O-Glycopyranosyl Derivatives of Deoxystreptamine. Tetrahedron Letters 747 (1975).
Uchida, K., E. Breitmaier, and W. A. Koenig: 13C Nmr Investigations of the Nucleoside Antibiotic Hikizimycin and its Constituents. Tetrahedron 31, 2315 (1975).
Nourse, J. G., and J. D. Roberts: Nuclear Magnetic Resonance Spectroscopy. Carbon-13 Spectra of Some Macrolide Antibiotics and Derivatives. Substituent and Conformational Effects. J. Amer. Chem. Soc. 97, 4584 (1975).
Omura, S., A. Nakagawa, A. Neszmelyi, S. D. Gero, A.-M. Sepulchre, F. Pirou, and G. Lukacs: Carhon-13 Nuclear Magnetic Resonance Spectral Analysis of 16-Membered Macrolide Antibiotics. J. Amer. Chem. Soc. 97, 4001 (1975).
Omura, S., A. Neszmelyi, M. SangarÉ, and G. Lukacs: Conformational Homogeneity in Solution of 14-Membered Macrolide Antibiotics as Evidenced by “C Nmr Spectroscopy. Tetrahedron Letters 2939 (1975).
Terui, Y., K. Tori. K. Nagashima, and N. Tsuji: C-13 Nuclear Magnetic Resonance Spectra of Erythromycins. Tetrahedron Letters 2583 (1975).
Martin, J. R., R. S. Egan, A. W. Goldstein, and P. Coi. Lum: Extension of the Erythromycin Biosynthetic Pathway. Isolation and Structure of Erythromycin E. Tetrahedron 31, 1985 (1975).
NeszmíLyi, A., S. ÓMura, T. T. Thang, and G. Lukacs: A Carbon-13 Spin Lattice Relaxation Time Study of 14-Membered Macrolide Antibiotics. Tetrahedron Letters 725 (1977).
NeszmÉLyi, A., S. Omura, and G. Lukacs: Carbon-l3 Spin-Lattice Relaxation Times and their Use for Spectral Analysis of 16-Membered Macrolide Antibiotics. J. C. S. Chem. Commun. 97 (1976).
Mtzsak, S., G. Slomp, A. NeszmÉLyi, S. D. Gero, and G. Lukacs: Carbon-13 N.M.R. Spectral Analysis and Spin-Lattice Relaxation Times of the Antibiotic Lincomycin and Related Compounds. Tetrahedron Letters 721 (1977).
Kukoljy, S., N. D. Jones, M. D. Chaney, T. K. Elzey, M. R. Gleissner, J. W. Paschal, and D. E. Dorman: Structure and Stereochemistry of Isomeric Penam and Cepham Derivatives. J. Org. Chem. 40, 2388 (1975).
Tort, K., T. Tsushima, Y. Tamura, H. Shigemoto, T. Tsuji, H. Ishitobi, and H. Tanida: Structure and Stereochemistry of 2-Chloromethylpenam and 3-chlorocepham Derivatives Studied by ‘C. and ’H Nmr Spectroscopy. Tetrahedron Letters 3307 (1975).
Harrison. C. R., and P. Hodge: Determination of the Configuration of Some Penicillin S-Oxides by 13C Nuclear Magnetic Resonance Spectroscopy. J. C. S. Perkin 1, 1772 (1976).
BussoN, R., II. Vanderhaeghf, and S. ToPper-: Preparation and Stereochemical Analysis of 5-Epibenzylpenicillin (S)- and (R)-Sulfoxide Esters. J. Org. Chem. 41, 3054 (1976).
Ref. 10, Chap. 5, p. 2271T. and references cited therein.
Lackner, H.: 13C-Nmr-Spektren der Pentapeptidlactonringe von Actinomycinen. Tetrahedron Letters 1921 (1975).
Booth, II., A. B. Mauler, and W. J. Rzeszotarski: A I3C Nmr Study of Actinomycin D and Related Model Peptides. Org. Magn. Res. 8, 219 (1976).
Dell, A., D. H. William, H. R. Morris, G. A. Smith, J. Feeney, and G. C. K. Roberts: Structure Revision of the Antibiotic Echinomycin. J. Amer. Chem. Soc. 97, 2497 (1975).
Bycroft, B. W., and T. J. King: Revised Constitution. Absolute Configuration and Conformation of Griseoviridin, a Modified Cyclic Peptide Antibistic. J. C. S. Perkin 1, 1966 (1976).
Tow, K., K. Tokura, K. Okabe, M. Ebata, H. Otsuka, and G. Lukacs: Carbon-13 Nmr Studies of Peptide Antibiotics Thiostrepton and Siomycin A: The Structure Relationship. Tetrahedron Letters 185 (1976).
Bycroft, B. W., and R. Pinchin: Structure of Althiomycin, A Highly Modified Antibiotic. J. C. S. Chem. Commun. 121 (1975).
Gulbis, J., and G. W. Everett, JR.: A 13C Nuclear Magnetic Resonance Analysis of the Metal Binding Site in Tetracycline. J. Amer. Chem. Soc. 97, 6248 (1975).
Gulbis, J., G. W. Everett, JR., and C. W. Frank: Effect of Added Electrolyte on the Binding of Tetracycline to Paramagnetic Ion Probes. A 13C and ‘H Nuclear Magnetic Resonance Study. J. Amer. C.em. Soc. 98, 1280 (1976).
Leibplatz, D.: Nachweis spezifischer Calcium-and Natriumkomplexierung durch das Antibiotikum Rifamycin S mit Hilfe der C-13 Nmr-Spektroskopie. Tetrahedron Letters 4125 (1974).
Tanabe, M., H. Seto, and L. F. Johnson: Biosynthetic Studies with Carbon-13. Carbon-13 Nuclear Magnetic Resonance Spectra of Radicinin. J. Amer. Chem. Soc. 92, 2157 (1970).
SroEssl, A., E. W. B. Ward, and J. B. Stotiiers: Incorporation of Doubly Labelled Sodium Acetate-13Cz into Phytuberin and Other Susquiterpenes in Potatoes: Experi- mental Confirmation of Postulated C-C Cleavages. Tetrahedron Letters 3271 (1976).
Tanabe, M., and K. T. Suzuki: Biosynthetic Studies with Carbon-13: Incorporation Pattern of 1,2–13C-Acetate into the Fungal Sesquiterpene Ovalicin. Tetrahedron Letters 4417 (1974).
Cane, D. E., and R. H. Levin: Application of Carbon-13 Magnetic Resonance to Isoprenoid Biosynthesis. II. Ovalicin and the Use of Doubly Labelled Mevalonate. J. Amer. Chem. Soc. 98, 1183 (1976).
Baker, F. C., C. J. W. Brooks, and S. A. Hutchinson: Biosynthesis of Capsidiol in Sweet Peppers (Capsicum frutescens) Infected with Fungi: Evidence for Methyl Group Migration from 13C Nuclear Magnetic Resonance Spectroscopy. J. C. S. Chem. Commun. 293 (1975).
Baker, F. C., and C. J. W. Brooks: Biosynthesis of the Sesquiterpenoid, Capsidiol, in Sweet Pepper Fruits Inoculated with Fungal Spores. Phytochemistry 15, 689 (1976).
Evans, R., J. R. Hanson, and R. Nyfeler: Studies in Terpenoid Biosynthesis, Part Xvii. Biosynthesis of Sesquiterpenoids Cyclonerodiol and Cyclonerotriol. J. C. S. Perkin I, 1214 (1976).
Hanson, J. R., T. Marten, and M. Siverns: Studies in Terpenoid Biosynthesis, Xil Carbon-13 Nuclear Magnetic Resonance Spectra of the Trichothecanes and the Biosynthesis of Trichothecolone from [2-“C]-Mevalonic Acid. J. C. S. Perkin I, 1033 (1974).
Tanabe., M., K. T. Suzuki, and W. C. Jankowski: Biosynthetic Studies with Carbon-13: The FT-“C Nmr Spectra of the Sesquiterpenoid Coriolins. Tetrahedron Letters 2271 (1974).
Cane, D. E., and R. B. Nachbar: Biosynthesis of Formannosin from [l,2–13C]Acetate. Tetrahedron Letters 2097 (1976).
Polonsky, J., G. Lukacs, N. Gagnoli-Bellavita, and R. Ceccherelli: Application du Couplage “C-”C 5 la Détermination de l’Origine Biogénétique des Substituants en C-4 des Virescenols A et B. Tetrahedron Letters 481 (1975).
Adams, M. R., and J. D. Bu’LocK: Biosynthesis of the Diterpene Antibiotic, Aphidicolin, by Radioisotope and 13C Nuclear Magnetic Resonance Methods. J. C. S. Chem. Commun. 389 (1975).
Barrow, K. D., R. B. Jones, P. W. Pemberton, and L. Phillips: Fusicoccin. V. The Biosynthesis of Fusicoccin from [I-“C]- and [2-”C]-Acetate. J. C. S. Perkin I. 1405 (1975).
Seo, S., Y. Tomita, and K. Tori: Biosynthesis of Oleanene-and Ursene-type Triterpenes from [4-“C]-Mevalonic Acid in Tissue Cultures of I.codon japonicus Hara. J. C. S. Chem. Commun. 270 (1975).
RtIsoM, T., H. J. Jakobsen, N. Rastrup Andersen, and H. LorcK: Assignment of the “C Nmr Spectra of Fusidic Acid Derivatives. Biosynthetic Incorporation of Sodium [I-”C]-Acetate into Fusidic Acid. Tetrahedron Letters 2247 (1974).
Cushley, R. J., and J. D. Filipenko: “C Fourier Transform n.m.r. MR. Reassignment of the ”C Spectrum of Ergosterol. Org. Magn. Res. 8, 308 (1976).
Popjak, G., J. Edmond, F. A. L. Anet, and N. R. Easton, JR.: Carbon-13 Nmr Studies on Cholesterol Biosynthesized from [“C] Mevalonates. J. Amer. Chem. Soc. 99, 931 (1977).
Gudgeon, J. A., J. S. E. Hooker, and T. J. Simpson: Use of Singly and Doubly Labelled “C-Acetate in the Elucidation of the Structures and Biosyntheses of Multi-colic and Multicolosic Acids, New Tetronic Acids from Penicillium multicolor. J. C. S. Chem. Commun. 636 (1974).
Cox, R. E., and J. S. E. Hooker: Biosynthesis of Glauconic Acid from [2,3-“C]Succinate. J. C. S. Chem. Commun. 583 (1976).
Simpson, T. J.: The 13C Nmr Spectrum of a Pyrone Metabolite of Aspergillus melleus. Biosynthetic Incorporation of Singly and Doubly Labelled [13C]-Acetate. Tetrahedron Letters 175 (1975).
Simpson, T. J., and J. S. E. Holker: The Biosynthesis of a Pyrone Metabolite of Aspergillus melleus. An Application of Long-Range 13C–13C Coupling Constants. Tetrahedron Letters 4693 (1975).
Nair, M. S. R.: Biosynthesis and Revised Structure of Rosellisin: Structure of Rosellisin Aldehyde. Phytochemistry 15, 1090 (1976).
Garson, M. J., and J. Staunton: Biosynthesis of Sclerin, Metabolite of Sclerotinia Sclerotiorum: Incorporation of [I-13C]- and [1,2–13C]-acetates. J. C. S. Chem. Commun. 928 (1976).
Cox, R. E., and J. S. E. Holker: The Biosynthesis of Fungal Metabolites. IX. Sclerin: Feedings with [1,2–13C]-Acetate and [Methyl-13C]-Methionine. J. C. S. Perkin I, 2077 (1976).
Yamazaki, M., Y. Mebayashi, and T. Tokoroyama: Biosynthesis of Sclerin. Tetrahedron Letters 489 (1977).
Hill, R. A., R. H. Carter (née Rayner), and J. Staunton: Biosynthesis of Terrein, a Metabolite of Aspergillus terreus Thom. J. C. S. Chem. Commun. 380 (1975).
Holker, J. S. E., and K. Young: Biosynthesis of Metabolites of Perioconia macro.cpinosa from [l-13C]- [2–13C]- and [1,2-’3C]-Acetate. J. C. S. Chem. Commun. 525 (1975).
Sato, Y., T. Oda, and S. Urano: Griseofulvin Biosynthesis: New Evidence of Two Acetate Dispositions in the Ring A from 13C Nuclear Magnetic Resonance Studies. Tetrahedron Letters 3971 (1976).
Simpson, T. J., and J. S. E. Holker: 13C-Nmr Studies on Griseofulvin Biosynthesis and Acetate Metabolism in Penicillium patulum. Phytochemistry 16, 229 (1977).
Birch, A. J., T. J. Simpson, and P. W. Westerman: Biosynthesis of Ravenelin from [1–13C]- and [1,2–13C]-Acetate. Tetrahedron Letters 4173 (1975).
Birch, A. J., J. Baldas, J. R. HluruCek, T. J. Simpson, and P. W. Westerman: Biosynthesis of the Fungal Xanthone Ravenelin. J. C. S. Perkin I, 898 (1976).
Seto. H., L. W. Cary, and M. Tanabe: Utilization of 13C–13C Coupling in Structural and Biosynthetic Studies. The Fourier Transform 13C Nuclear Magnetic Resonance Spectrum of Mollisin. J. C. S. Chem. Commun. 867 (1973).
Casey, M. L., R. C. Paulick, and H. W. Whitlock, JR.: A Carbon-13 Nuclear Magnetic Resonance Study of Mollisin and Its Biosynthesis. J. Amer. Chem. Soc. 98, 2636 (1976).
Seto, H., and H. Yoneiiara: Utilization of 13C–13C Coupling in Structural and Biosynthetic Studies. Viii. The Cyclization Pattern of a Fungal Metabolite, Scytalone. Tetrahedron Letters 487 (1977).
Sankawa, U., H. Shimada, T. Sato, T. Kinoshita, and K. Yamasaki: Biosynthesis of Scytalone. Tetrahedron Letters 483 (1977).
Mcinnes, A. G., D. G. Smith, J. A. Walter, L. C. Vining, and J. L. C. Wright: Homonuclear 13C Decoupling in 13C Nuclear Magnetic Resonance Studies of Biosynthesis Using Doubly Labelled Precursons. Assembly Pattern of the Acetate Units in Bikaverin. J. C. S. Chem. Commun. 66 (1975).
Paulick, R. C., M. L. Casey, D. F. Hillenbrand, and H. W. Whitlock, JR.: A 13C Nuclear Magnetic Resonance Study of the Biosynthesis of Islandicin from 13CH313CO2-Na. J. Amer. Chem. Soc. 97, 5303 (1975).
Paulick, R. C.. M. L. Casey. and H. W. WmrcocK, JR.: A 13C Nuclear Magnetic Resonance Study of the Biosynthesis of Daunomycin from 13CH3-i3CO2-Na. J. Amer. Chem. Soc. 98, 3370 (1976).
Holker, J. S. E., R. D. Lapper, and T. J. Simpson: The Biosynthesis of Fungal Metabolites. Part IV. Tajixanthone: “C Nuclear Magnetic Resonance Spectrum and Feeding with [1–13C]- and [2–1JC]-Acetate. J. C. S. Perkin I, 2135 (1974).
Canham, P., L. C. Vining, A. G. Mcinnes, J. A. Walter, and J. L. C. Wright: Pattern of Acetate Incorporation into the Aglycone of Chartreusin. Evidence from “C Nuclear Magnetic Resonance Studies for a Single-chain Polyketide Intermediate. J. C. S. Chem. Commun. 319 (1976).
Gorst-Allman, C. P., K. G. R. Pachler, P. S. Steyn, P. L. Wessels, and D. B. Scott: Biosynthesis of Averufin in Aspergillus parasiticus from [13C]-acetate. J. C. S. Chem. Commun. 916 (1976).
Seto, H.. L. W. Cary, and U. Tanabe: Utilization of “C-”L: Coupling in Structural and Biosynthetic Studies. V. The 13C FT Nmr Spectrum of Sterigmatocystin. Tetrahedron Letters 4491 (1974).
Steyn, P. S., R. Vleggaar, P. W. Wessels, and D. B. Scorn: Biosynthesis of Aflatoxin B. from [2-“C]- and [I,2-”C]-Acetate. J. C. S. Chem. Commun. 193 (1975).
Pachler, K. G. R., P. S. Steyn, R. Vleggaar, and P. L. Wessels: Study of thc Biosynthesis of Sterigmatocystin and Reassignment of 13C Nuclear Magnetic Resonance Spectrum. J. C. S. Chem. Commun. 355 (1975).
Hsieh, D. P. H., J. N. Seiber, C. A. Reece, D. L. Fitzell, S. L. Young, J. I. Dalezios. G. N. LA Mar, D. L. Budd. and E. Motell: “C Nuclear Magnetic Resonance Spectra of Afiatoxin Br Derived from Acetate. Tetrahedron 31, 661 (1975).
Hsieh, D. P. H., R. C. Yao, D. L. Fi Zell, and C. A. Reece: Origin of the Bisfuran Ring Structure in Afiatoxin Biosynthesis. J. Amer. C.em. Soc. 98, 1021 (1976).
The Use of “C-Nmr Spectroscopy in Biosynthetic Studies. II. Biosynthesis of Narasin, a New Polyether lonophore from Fermentation of Streptomvices au, eoIaciens. Hely. Chini. Acta 59, 2625 (1976).
Nadzan, A. M., and K. L. Rinehart, JR.: Nybomycin. 8. Biosynthetic Origin of the Central Rine Carbons Studied by 13C-Labelled Substrates. J. Amer. Chem. Soc. 98, 5012 (1976).
CardiltO. R., C. Fuganti, G. Gatti, D. GhirrNghelli, and P. Grassell!: Molecular Structure of Cryptoechinuline A, a new Metabolite of Aspe yillus amstefodamì, Isolated during Investigations of Echinuline Biosynthesis. Tetrahedron Letters 3163 (1974).
Mcinnes, A. G., D. G. Smith, C.-K. Wat, L. C. Vining, and J. L. C. Wright: Tenellin and Bassianin, Metabolites of Beaueeria Species. Structure Elucidation with “N- and Doubly ”C Enriched Compounds using r3C Nuclear Magnetic Resonance Spectroscopy. J. C. S. Chem. Commun. 281 (1974).
Mcinnes, A. G., D. G. Smith, J. A. Walter, L. C. VintNG, and J. L. C. Wrigh’I: New Techniques in Biosynthetic Studies Using 13C Nuclear Magnetic Resonance Spectroscopy. The Biosynthesis of Tenellin Enriched from Singly and Doubly Labelled Precursors. J. C. S. Chem. Commun. 282 (1974).
Leete, E.. N. Kowanko, R. A. Newmark, L. C. Vining, A. G. Mcinnls. and.1. L. C. Wright: The Use of Carbon-13 Nuclear Magnetic Resonance to Establish that the Biosynthesis of Tenellin Involves an Intramolecular Rearrangement of Phenyl-alanine. Tetrahedron Letters 4103 (1975).
Graf, W., J.-L. Robert, J. C. VE.Deras, C. Tamm, P. II. Solomon. I. Micra, and K. Naksnishi: Biosynthesis of the Cytochalasans. Iii. “C Nmr of Cytochalasin B (Phomin) and Cytochalasin D. Incorporation of [1–13C]- and [2-”C]-Sodium Acetate. Hclv. Chim. Acta 57, 1801 (1974).
Videras, J. C., W. Graf, L. David, and C. Tamm: Biosynthesis of Cytochalasans, 4. The Mode of Incorporation of Common Naturally-Occurring Carboxylic Acids into Cytochalasin D. HeIv. Chim. Acta 58, 1886 (1975).
Hurley, L. H., M. Zmuewski, and C.-J. Chang: Biosyuthesis of Anthramycin. Determination of the Labelling Pattern by the Use of Radioactive and Stable Isotope Techniques. J. Amer. Chem. Soc. 97, 4372 (1975).
Stroshane, R. M.. M. Taniguchi, K. L. Rinehart, JR., J. P. Polls, W. J. Haak, and B. A. Ruff: Spectinomycin Biosynthesis Studied by Carbon Magnetic Resonance Spectroscopy. J. Amer. Chem. Soc. 98, 3025 (1976).
Munro, M. H. G., M. Taniguchi, K. L. Rinehart, JR., and D. Gottlieb: A Cmr Study of the Biosynthesis of Chloramphenicol. Tetrahedron Letters 2659 (1975).
Johnson, R. D., A. Haber, and K. L. Rinehart, JR.: Geldanamyein Biosynthesis and Carbon Magnetic Resonance. J. Amer. Chem. Soc. 96, 3316 (1974).
Omura, S., A. Nakagawa, H. Takeshima, K. Atsumi, J. Miyazawa, F. Piriou, and G. Lukacs: Biosynthetic Studies Using 13C Enriched Precursors of the 16-Membered Macrolide Antibiotic Leucomycin A3. J. Amer. Chem. Soc. 97, 6600 (1975).
Omura, S., A. Nakagawa, H. TakeshtM.A, J. MiyazawA, C. Kitao, F. PtRlou. and G. Lukacs: A 13C Nuclear Magnetic Resonance Study of the Biosynthesis of the 16-Membered Macrolide Antibiotic Tylosin. Tetrahedron Letters 4503 (1975).
HutcttInsdn, C. R., A. H. Heckendorf, P. E. Daddona, E. Hagaman, and E. Wlnkeri: Biosynthesis of Camptothecin. I. Definition of the Overall Pathway Assisted by Carbon-13 Nuclear Magnetic Resonance Analysis. J. Amer. Chem. Soc. 96, 5609 (1974).
Battersby, A. R., P. W. Sheldrake, and J. A. Milner: Biosynthesis of Colchicine: Incorporation of a 13C-Lahelled Precursor in a Higher Plant. Tetrahedron Letters 3315 (1974).
Leste, E., and G. B. Boden: Biosynthesis of Shihunine in Dendrobium piciardü. J. Amer. Chem. Soc. 98, 6321 (1976).
Leete, B.: Biosynthesis of the Isoquinuelidine Moiety of Dioseorinve. Incorporation of [5.6–13C2]-Nicotinic Acid Established by Means of 13C Nuclear Magnetic Resonance. J. Amer. Chem. Soc. 99, 648 (1977).
Hutchinson, C. R., M.-T. S. HsIA, and R. A. Carver: Biosynthetic Studies with 13CO2. of Secondary Plant Metabolites. Nicotina Alkaloids. I. Initial Experiments. J. Amer. Chem. Soc. 98, 6006 (1976).
Djerassi, C.: Natural Products Chemistry 1950 to 1980 A Personal View. Pure Appt. Chem. 41, 113 (1975).
For an account on the experimental and methodological requirements see e. g. J. N. Shoolery, F. W. Wehrlt, and T. Wirthlin: Experimentelle Voraussetzungen zur Analyse kleinster Substanzmengen mittels “C- und’ H-Kernresonanzspektroskopie. Chemie-Technik 6, 55 (1977).
Heller, S. R., G. W. A. Milne, and R. J. Feldmann: A Computer-Based Chemical Information System. Science 195, 253 (1977).
Schwarzenrach, R., J. Meili, H. KÔNitzer, and J. T. Clerc: A Computer System for Structural Identification in Organic Compounds from 15C Nmr Data. Org. Magn. Res. 8, 11 (1976).
Bremser, W., M. Klier, and E. Meyer: Mutual Assignment of Subspectra and Substructures A Way to Structure Elucidation by “C Nmr Spectroscopy. Org. Mann. Res. 7, 97 (1975).
Cheer, C. J., D. H. Smith, C. Djerassi, B. Turscii, J. C. Braekman, and D. Daloze: Application of Artificial Intelligence for Chemical Inference Xxi. Chemical Studies of Marine Invertebrates. Xvii. The computer-assisted identification of [+]-Palustrol in the Marine Organism Cespitularia sp.. atf. subuiridis. Tetrahedron 32, 1807 (1976).
Fringuelli, F., H. E. Gottlieb. E. W. Hagaman, A. Taticchi, E. Wenkeri, and P. M. Wovkulich: 13C-Nmr Spectroscopy of Carane Derivatives. Gazz. Chim. Ital. 105, 1215 (1975).
Holden, C. M., J. C. Rees, S. P. Scott, and D. Whittaker: Stereochemistry and Reduction of Umbellulone (Thuj-3-en-2-one) and Isodihydroumbellulone (4ßHThujan-2-one). J. C. S. Perkin II, 1342 (1976).
Krhser, W.. L. Janitschke, and L. Ernst: Configurational Assignment by Nmr Spectroscopy of Stereoisomeric 2.6-Dimethyl-tricyclo [5,2,1, J2.6] dec-3-enes and De-canes. Albene and Isoalbene. Tetrahedron 34, 131 (1978).
Bailleul, F., P. Delaveau, A. Rabaron, M. Plat, and M. KocH: Feretoside et Gardenoside du Feretia apondanthera. Rmn du carbone-13 en Série Iridoide. Phytochemistry 16, 723 (1977).
Miles, D. H., U. Kokpol, J. Bhattacharyya, J. L. Atwood, K. E. Stone, T. A. Bryson, and C. Wilson: Structure of Sarracenin. An Unusual Enol Diacetate Mono-terpene from Insectivorous Plant Sarracenia Flava. J. Am. Chem. Soc. 98, 1569 (1976).
Van Engen, D., J. Clardy, E. Kho-WtSeman, P. Drew, M. D. Higgs, and D. J. Faulkner: Violacenine, A. Reassignment of Structure. Tetrahedron Letters 29 (1978).
Higgs, M. D., D. J. Vanderah, and D. J. Faulkner: Polyhalogenated Monoterpenes from Plocamium cartilagineum from the British Coast. Tetrahedron 33, 2775 (1977).
Wratten, S. J., and D. J. Faulkner: Carbonimidic Dichlorides from the Marine Sponge Pseudaxinyssa pitys. J. Am. Chem. Soc. 99, 7367 (1977).
Crews, P., and E. Kho-Wiseman: Acylic Polyhalogenated Monoterpenes from the Red Alga Plocamium violaceum. J. Org. Chem. 42, 2812 (1977).
Norton, R. S., R. G. Warren, and R. J. Wells: Three New Polyhalogenated Monoterpenes from Plocamium Species. Tetrahedron Letters 3905 (1977).
Sato, T., M. Tada, T. Takahashi, I. Horibe, H. Isnit. and K. Tori: Carbon-13 and Hydrogen-1 Nmr Studies of Conformations of Ligularol and 6-Epiligularol, Naturally Occurring cis-Decalin Derivatives. Tetrahedron Letters 3895 (1977).
Cuevas, O., and J. R. Hanson: Norbotryal Acetate. A Nor-sesquiterpenoid Aldehyde from Botrytis cinerea. Phytochemistry 16, 1016 (1977).
KUno, 1., I. Miura, M. J. PE’Itei, Y.-W. Lee, F. Pilkievicz, and K. Nakanishi: Muzigadial and Warburganal, Potent Antifungal Antiyeast, and African Army Worm Antifeedant Agents. Tetrahedron Letters 4553 (1977).
Aasen, A. J., T. Nishida, C. R. Enzell, and H. H. Appel: The Structure of (11 t„ 125)11,12-Di(7-drimen-1 1-oxy)-11,12-epoxy-7-drimene. Acta Chem. Scand. B 31, 51 (1977).
Rose, A. F., and J. J. Sills: Marine Natural Products, Xiv. l-S-Bromo-4-R-hydroxyselin-7-ene, A Metabolite of the Marine Alga Laurencie sp. Tetrahedron Letters 2935 (1977).
Murai, A., N. Katsui, F. Yagihasht, T. Masamune, Y. Ishigurt, and K. Tomiyama: Structure of Rishitin M-1 and M-2, Metabolites of Rishitin in Healthy Potato Tube Tissues. J. C. S. Chem. Commun. 670 (1977).
Ward, E. W. B., A. SroessL, and J. B. Stoihers: Metabolism of the Sesquiterpenoid Phytoalexins Capsidiol and Rishitin to their 13-Hydroxy Derivatives by Plant Cells. Phytochemistry 16, 2024 (1977).
Coxon, D. T., K. R. Price, B. HowArd, and R. F. Curtis: Metabolites from Microbially Infected Potato. Part I. Structure of Phytuberin. J. C. S. Perkin 1, 53 (1977).
Southwell, I. A.: Biogenetically Significant Sesquiterpenoids from Rebus rosifolius Oil. Tetrahedron Letters 873 (1977).
Anderson, R. C., D. M. Gunn, J. Murray-Rust, P. Murray-Rust, and J. S. Roberts: Vetispirane Sesquiterpene Glucosides from Fluecured Virginia Tabacco: Structure, Absolute Stereochemistry, and Synthesis. X-Ray Structure of the p-Bromobenzenesulphonate of One of the Derived Aglycones. J. C. S. Chem. Commun. 27 (1977).
Matsuo, A., and S. Hayashi: Revised Structure and Absolute Configuration of the Sesquiterpene (+)-Bazzanene. J. C. S. Chem. Commun. 566 (1977).
Herz, W., P. S. Kalyanaraman, and G. RamakrtShnan: Sesquiterpene Lactones from Eupatoriurn perfoliatum. J. Org. Chem. 42, 2264 (1977).
Doskotch, R. W., F. S. EL-Feraly, E. H. F.Irchild, and C.-T. Huang: Isolation and Characterization of Peroxyferolide, a Hydroperoxy Sesquiterpene Lactone from Liriodendron tulipifera. J. Org. Chem. 42, 3614 (1977).
Heitz, W.. P. S. Subramaniam, R. Mural, N. Dennis, and J. F. Blount: Micordllln, a Complex Elemanolide from Mikania cordifolia. J. Org. Chem. 42, 1720 (1977).
Vidari, G., M. Debernardi, P. Vita-Finzi, and G. Fronza: Sesquiterpenes from Lactarius blennius. Phytochemistry 15, 1953 (1976).
Zalkow, L. H., R. N. Harris, Iii., D. Van Derveer, and J. A. Bertrand: Isocomene, a Novel Sesquiterpene from Isocoma wrightii. X-Ray Crystal Structure of the Corresponding Diol. J. C. S. Chem. Commun. 456 (1977).
Beechan, C. M., C. Dierassi, J. S. Finer, and J. Clardy: Terpenoids, Lxxiii. Sinularene. A Sesquiterpene Hydrocarbon Based on a Novel Skeleton from the Soft Coral. Sinularia mayi. Tetrahedron Letters 2395 (1977).
Matsuo, A., I. Terada, M. Nakayama, and S. HayastIl: Cuprenenol and Rosulantol. New Cuparane Class Sesquiterpene Alcohols from the Liverwort Jungermannia rosulalts. Tetrahedron Letters 3821 (1977).
King, T. J.: Alliacolide, a New Bicyclic Sesquiterpene Expoxy-lactone with a Novel Carbon Skeleton from Cultures of the Fungus Marasmius alliaceus (Jacques ex Fr.) Fr, X-Ray Structure. J. C. S. Chem. Commun. 727 (1977).
Ranieri, R. L., and G. J. Calton: Quadrone, a New Antitumor Agent from Aspergillus terreus. Tetrahedron Letters 499 (1978).
Nozoe, S.. H. Kobayashi, S. Urano, and J. Furukawa: Isolation of A’-Protoilludene and the Related Alcohols. Tetrahedron Letters 1881 (1977).
YusTE, F., D. Diaz, F. Walls, and K. Jankowski: The Structure of Cacalone. J. Org. Chem. 41, 4103 (1976).
Suzuki, T.. A. Furusaki. N. Hashiba, and E. Kurosawa: Novel Skeletal Bromo Ether from the Marine Alga, Laurencia nipponica Yamada. Tetrahedron Letters 3731 (1977).
Corr, J. C., S. J. Mitchell, and G. J. Stokie: Studies of Australian Soft Corals V. A Novel Furano-sesquiterpene Acid from the Soft Coral Sinularia yonatodes (kolonko). Tetrahedron Letters 1539 (1977).
Sun, H. H., S. M. Waraszkiewicl, and K. L. Erickson: Crs-Halogenated Compounds from the Hawaiian Marine Alga Laurencia nid)fica, VI. The Isomaneonenes. Tetrahedron Letters 4227 (1976).
Silva, M., A. Wiesenfeld, P. G. Sammes, and “1. W. Tyler: New Sesquiterpenes from Pleocarphus revolutus. Phytochemistry 16, 379 (1977).
Eppley, R. M., E. P. Mazzola, R. J. Highet, and W. J. Bailey: Structure of Satratorin H, a Metabolite of Slachybotrys atra. Application of Proton and Carbon-13 Nuclear Magnetic Resonance. J. Org. Chem. 42, 240 (1977).
Breitenstein, W., and C. Tamm: Verrucarin K, the First Natural Trichoíhecene Derivative Lacking the 12,13-Epoxy Group. Heiv. Chim. Acta 60, 1522 (1977).
Matsumoto, M., H. Minato, K. Tori, and M. Ueyama: Structures of Isonoridin E, Epoxyisonoridin E, and Epoxy-and Diepoxy-nonidine H, New Metabolites Isolated from Ct’lindrocarpan Species Determined by Carbon-13 and Hydrogen-1 Nmr Spectroscopy. Tetrahedron Letters 4093 (1977).
Manville, J. F., K. Bock, and E. Von Rudloff: Occurrence of Juvabione-Type and Epijuvabione-type Sesquiterpenoids in Ahies alba. Phytochemistry 16, 1967 (1977).
Gerber, N. N., and D. Z. Denney: The Carbon-13 Nuclear Magnetic Resonance Spectra of I-our Eudesmane Sesquiterpenols. Phytochemistry 16, 2025 (1977).
Archer, R. A., D. W. Johnson, E. W. Hagaman, L. N. Moreno, and E. Wenkert: Carbon 13 Nuclear Magnetic Resonance Spectroscopy of Naturally Occurring Substances. 47. Cannabinoid Compounds. J. Org. Chem. 42, 490 (1977).
Jones, N. F.: The Pyrethrins and Related Compounds, Part 21. Carbon-t3 Nuclear Magnetic Resonance Spectra of Synthetic Pyrcthroids. J. C. S. Perkin I, 1878 (1977).
Takeuchi. S., J. Lzawa, H. Seto.. and H. Yonehara: New “C-Nmr Techniques Applied to Pentalenolactone Structure. Tetrahedron Letters 2943 (1977).
Carsten-Lichterfelde, C. Von. C. Pascual. R. MA. Rabanal, B. Rodriguez, and S. Valverul: “C Nmr Substituent Effects in Tetracyclic Diterpenoids. Tetrahedron 33, 1989 (1977).
Chalmers, A. A., C. P. Gorst-Allman, and L. P. L. Piacenza: Carbon-13 Nmr Spectra of Stachenol and Related Derivatives. Tetrahedron Letters 1665 (1977).
Imamgra, P. M., A. J. Marsaioli, L. E. S. Barata, and E. A. Ruveda: “C Nmr. Spectral Analysis of Eperuane Diterpenes. Phytochemistry 16, 1842 (1977).
Pelletier, S. W., N. V. Mody, J. Bhattacharyya, and D. H. Miles: Carbon-13 Nmr Analysis of Naturally Occurring 9,10-Dihydrophenanthrenes and Their Derivatives. Tetrahedron Letters 425 (1978).
Kato, T., M. Tsunakawa, N. Sasaki, H. Aizawa, K. Fuhta, Y. Kitahara, and N. Takahashi: Growth and Germination Inhibitors in Rice Husks. Phytochemistry 16, 45 (1977).
Hayashi, Y., T. Matsumoto, Y. Y.KI, and T. Sakan: New Congeners of Cytotoxic Nor-diterpenoid Dilactones in Podocarpus nagi, Three New Components of 7,8Epoxy-Enolide Type. Tetrahedron Letters 4215 (1977).
Kato, T., H. Aizawa, M. Tsunakawa, N. Sasaki, Y. Kitahara, and N. Takahashi:
Chemical Transformations of the Diterpene Lactones, Momilactones A and B. J. C. S. Perkin I, 250 (1977).
Savona, G., F. Plozzi, J. R. Hanson, and M. Sivfrns: Structures of Three New Diterpenoids from Ballota Species. J. C. S. Perkin I, 322 (1977).
ChattermE, A., A. Baner.Iee, and F. Boiilmann: Crotocaudin, a Rearranged Labdane Type Norditerpene from Croton caudatus Geisel. Tetrahedron 33, 2407 (1977).
Miyase, T., P. Ruedi, and C. H. Eogster: Unusual Rearranged Abietanoic Diterpenoids from Solenostemon Species. J. C. S. Chem. Commun. 859 (1977).
Blunt, J. W., G. S. Boyd, M. P. Hartshorn, M. H. G. Munro, and L. K. Pannell: The Acid-Catalysed Dehydration of 13a-Substituted 13(3-methyl-podocarpan-8(3-ols. AusL J. Chem. 30, 2015 (1977).
Miyase, T., P. RÜFdi, and C. H. Eugster: Diterpenoide Drüsenfarbstoffe aus Labiaten: Coleone U, V, W and t4-O-Formylcoleon-V sowie 2 Royleanone aus Plectranulius tnyriamhus Brig., cis-and trans-A/B-6.7-Dioxoroyleanon. HeIv. Chim. Acta 60, 2770 (1977).
Miyase, T., P. Aged!, and C. H. Eugster: Diterpenoide Drüsenfarbstoffe aus Labiaten: 3[3-Acetoxyfuerstion, Nilgherron A und Nilgherron B, neue Chinomethane aus Plectranthu.s nilgherricus Benth., absolute Konfiguration von Fuerstion. Hely. Chim. Acta 60, 2789 (1977).
Ekman, R., R. SJÖHolm, and K. Hannus: Isoabienol, the Principal Diterpene Alcohol in Pinus sylvestris Needles. Acta Chem. Scand. B 31, 921 (1977).
Nair, A. G. R., S. S. Subramanan, F. Bohlmann, S. SchÖNeweiss, and T. J. Mabry: A new Diterpene Galactoside from Acanthospermum hispidum. Phytochemistry 15, 1776 (1976).
Rodriguez, B.: New Labdane Diterpenoids from Sideritis chamaedryfolia. Phytochemistry 17, 281 (1978).
Braun, S., und H. Breitenbach: Strukturaufklärung einer neuen Diterpensäure aus Metaseguoia glyptostroboides mit Hilfe der 13C-Nmr-Spektroskopie. Tetrahedron 33, 145 (1977).
Gonzalez, A. G., J. M. Arteaga, J. L. Breton, and. B. M. Fraga: Five new Labdane Diterpene Oxides from Eupatorium jhanii. Phytochemistry 16, 107 (1977).
Ceccherelli, P., M. Curini, R. Pellicciari, M. S. Raju, and E. Wenkert: Conversion of Virescenol A into Virescenol B. J. Org. Chem. 42, 3438 (1977).
Bhat, S. V., B. S. Bajwa, H. Dornauer, and N. J. DE SouzA: Structures and Stereo-chemistry of New Labdane Diterpenoids from Coleus forskohlii Brig. Tetrahedron Letters 1669 (1977).
Savona, G., S. Passannanti, M. P. Paternostro, F. PIozzi, J. R. Hanson, and M. Siverns: 813-Hydroxyfruticolone, a Diterpenoid from Teucrium fruticans. Phytochemistry 17, 320 (1978).
Bohlmann, F., und C. Zdero: Ein neues Clerodan-Derivat sowie weitere Inhaltsstoffe aus der Gattung Macowania. Phytochemistry 16, 1583 (1977).
Kubo, I., I. Miura, K. Nakanishi, T. Kamikawa, T. Isobe, and T. Kubota: Structure of Isodomedin, a Novel eni-Kaurenoid Diterpene. J. C. S. Chem. Commun. 555 (1977).
Vichnewski, W., H. DE Freitas Leitao Filho, R. Murari, and W. Herz: Cinnamoylgrandifloric Acid from Mikania oblongifolia. Phytochemistry 16, 2028 (1977).
Manchand, P. S., and J. F. Blount: Stereostructures of the Macrocyclic Diterpenoids Ovatodiolide and Isoovatodiolide. J. Org. Chem. 42, 3824 (1977).
Kashman, Y., and A. GrowEiss: Lobolide: A New Epoxy Cembranolide from Marine Origin. Tetrahedron Letters 1159 (1977).
Coll, J. C., G. B. Hawes, N. Liyanage, W. Oberhansli, and R. J. Wells: Studies of Australian Soft Corals. I. A New Cembrenoid Diterpene from a Sacrophyton Species. Aust. J. Chem. 30, 1305 (1977).
CoLL, J. C., S. J. Mitchell, and G. J. S’rOkie: Studies of Australian Soft Corals. II. A Novel Cembrenoid Diterpene from Lobophytum michaelae. Aust. J. Chem. 30, 1859 (1977).
Bowden, B. F., J. A. Brittle, J. C. Coll, N. Liyanage, S. J. Mitchell. and G. J. S.Orie: Studies of Austrial Soft Corals. VI. A New Cembrenoid Diterpene from the Soft Coral Lobophytum crassum (Coelenterata, Anthozoa, Octocorallia, Alcyonacea). Tetrahedron Letters 3661 (1977).
Springer, J. P., J. Clardy, R. H. Cox, H. G. Cutler, and R. J. Cole: The Structure of a New Type of Plant Growth Inhibitor Extracted from Immature Tabacco Leaves. Tetrahedron Letters 2737 (1975).
Behr, D., I. Wahlberg, A. J. Aasen, T. Nishida, C. R. Enzell, A.-M. Pilotti, and J.-E. Berg: (1S,2E,4R,6E,8R,I1S,12R)- and (1S,2E,4S,6E,8R,11S,12R)-8,11Epoxy-2,6-thunbergadiene-4,12-diol, Two New Diterpenoids of Greek Tobacco. Acta Chem. Scand.. in press.
Kazlauskas, R., P. T. Murphy, R. J. Wells, and P. SchÖNholzer: Two New Diterpenes Related to Eunicellin from a Cladiella Species (Soft Coral). Tetrahedron Letters 4643 (1977).
Ireland, C., and D. J. Faulkner: Diterpenes from Dolabella californica. J. Org. Chem. 42, 3157 (1977).
Prestwich, G. D., S. P. Tanis, F. G. Pilkiewicz, I. Miura, and K. Nakanishi: Nasute Termite Soldier Frontal Gland secretions. 2. Structures of Trinervitene Congeners from Trinervitermes Soldiers. J. Am. Chem. Soc. 98, 6062 (1976).
Prestwich, G. D., B. A. Solheim, J. Clardy. F. G. Pilkiewicz, I. Miura, S. P. Tanis, and K. Nakanishi: Kempene-1 and -2, Unusual Tetracyclic Diterpenes from Nasuti-termes Termite Soldiers. J. Am. Chem. Soc. 99, 8082 (1977).
Pascard, C., T. Prange, and J. PoloNsky: Crystal and Molecular Structure of the Quassinoid 6-Hydroxy-picrasin B. J. Chem. Research (S), 324 (1977), (M), 3636 (1977).
Gonzalez, A. G., C. G. Francisco, R. Freire, R. Hernandez, J. A. Salazar, and E. Suarez: Cl2 Stereochemistry of a-and 13-Levantenolide. Carbon-13 Nmr Spectra Labdanolic Diterpenes. Tetrahedron Letters 1897 (1976).
Valverde. S., and B. Rodriguez: The Use of 13C-Nmr in the Determination of Structures: A Correction of the Structure of Borjatriol. Phytochemistry 16, 1841 (1977).
Kashman, Y., and A. Rudi: The `C-Nmr Spectrum and Stereochemistry of Heteronemin. Tetrahedron 33, 2997 (1977).
Cimino, G., S. Destefano, L. Minale, and E. Trivellone: l2-epi-SCalarin and 12-epi-Deoxoscalarin. Sesterterpenes from the Sponge Spongia Nitens. J. C. S. Perkin 1, 1587 (1977).
Stipanovic, R. D., A. A. Bell, D. H. O’Brien, and M. J. Lukefahr: Heliocide H3, an Insecticidal Terpenoid from Gossypium hirsutum. Phytochemistry 17, 151 (1978).
Chexal, K. K., J. P. Springer, J. Clardy, R. J. Cole, J. W. Kirksey, J. W. Dorner, H. G. Cutler, and B. J. Strawter: Austin, a Novel Polyisoprenoid Mycotoxin from Aspergillus ustus. J. Am. Chem. Soc. 98, 6748 (1976).
Mondon, A., D. Trautmann, B. Epe, and U. Oelbermann: Zur Kenntnis der Bitterstoffe aus Cneoraceen. VI. Tetrahedron Letters 3291 (1976).
Zur Kenntnis der Bitterstoffe aus Cneoraceen, Vii. Tetrahedron Letters 3295 (1976).
Purushothaman, K. K., S. Chandrasekharan, J. D. Connolly, and D. S. Rycroft: Tetranortriterpenoids and Related Substances. Part 18. Two New Tetranortriterpenoids with a Modified Furan Ring from the Bark of Soymida febrifuga. A. Juss (Meliaceae). J. C. S. Perkin I, 1873 (1977).
Siddiqui, S., S. Fuchs, J. Lubckl und W. Voelter: Struktur eines neuen Naturstofles aus Melia azadirachta Linn: 17-Hydroxyazadiradion. Tetrahedron Letters 611 (1978).
Sabata, B. J. D. Connolly, G. Labbe, and D. S. Rycroft: Tetranortriterpenoids and Related Substances. Part 19. Revised Structures of Atalantolide and Atalantin, Limonoids from the Root Bark of Atalantia monophylla. Correa (Rutaceae). J. C. S. Perkin I, 1875 (1977).
Halsall, T. G., K. Wragg, J. D. Connolly, M. A. Mclellan, L. D. Bredei.L, and D. A. H. Taylor: 13C Nuclear Magnetic Resonance Spectra of Some Limonoids. Part Iii. The Spectra of Some Derivatives of Entandrophragmin and a Revised Structure for Condollein. J. Chem. Research (S), 154 (1977), (M), 1727 (1977).
Asakawa, J., R. Kasai, K. Yamasaki, and O. Tanaka: 13C Nmr Study of Ginseng Sapogenins and their Related Dammarane Type Triterpenes. Tetrahedron 33, 1935 (1977).
sH17, H., S. Seo, K. Tori, T. T.zYD, and Y. Yoshimura: The Structures of Saikosaponin-E and Acetylsaikosaponins, Minor Components Isolated from Bupleurum falcatum L., Determined by C-13 Nmr Spectroscopy. Tetrahedron Letters 1227 (1977).
Yamada, Y., K. Hagiwara, K. IGtioHI, and S. SuzuKI: Structures of Anvenin I and II, Bitter Principles from Amagallis arvensis L. (Primulaceae). New Cucurbbitacin Glucosides. Tetrahedron Letters 2099 (1977).
Ziegler, R., and C. Tamm: Isolation and Structure of Eucosterol and 163-Hydroxyeucosterol. Two Novel Spirocyclic Nortriterpenes, and of a New 24-Nor-5a-chola8,16-diene-23-oic Acid from Bulbs of Several Eucomis Species. Heiv. Chim. Acta 59, 1997 (1976).
Okorie, D. A., and D. A. H. Taylor: Triterpenes from the seed of Entandrophragma Species. Phytochemistry 16, 2029 (1977).
Dreyer, D. L., and E. K. Trousdale: Cucurbitacins in Purshia tridentata. Phytochemistry 17, 325 (1976).
KAwAI, K., and S. Shibata: Pseudojujubogenin, a New Sapogenin from Bacopa mon-niera. Phytochemistry 17, 287 (1978).
Blunt, J. W., and J. B. Stothers: “C N. m. r. Spectra of Steroids — A Survey and Commentary. Org. Magn. Resonance 9, 439 (1977).
Van Antwerp, C. L., H. Eggert, G. D. Meakins, J. O. Miners, and C. Djerassi: Additivity Relationships in Carbon-13 Nuclear Magnetic Resonance Spectra of Dihydroxy Steroids. J. Org. Chem. 42, 789 (1977).
Bermann, E., Z. Luz, Y. Mazur, and M. Sheves: Conformational Analysis of Vitamin D and Analogues. 13C and 1H Nuclear Magnetic Resonance Study. J. Org. Chem. 42, 3325 (1977).
Smith, W. B.: The Carbon-13 Spectra of Steroids on the Way to Ecdysone. Org. Magn. Resonance 9, 644 (1977).
Taylor, E. J., and C. Dierassi: Synthesis of Cholest-5-ene-33-,11 a,153-triol-7-one, A Model for the Steroid Nucleus of Oogoniol, a Sex Hormone of the Water Mold Achlya. J. Org. Chem. 42, 3571 (1977).
Mcmorris, T. C., S. R. Show, and G. R. Weihe: Evidence for C-29 Hydroxyl Group in Oogoniol from “C Nmr Spectra of Model 33,26- and 33.29-Dihydroxy Stigmast-5-enes. Tetrahedron Letters 335 (1978).
Hiking, H., K. Mohri, Y. Hiking, S. Arihara, T. Takemoto, H. Mori, and K. Shibata: Inokosterone, an Insect Metamorphosing Substance from Achyranthes faurier. Absolute Configuration and Synthesis. Tetrahedron 32, 3015 (1976).
Koreeda, M., N. KoIzumi, and B. A. Teilher: Stereochemically Controlled Synthesis of 20,22-Epoxycholesterols. Tetrahedron Letters 4565 (1976).
Moss, G. P.: Carbon-13 Nmr Spectra of Carotenoids. Pure Appl. Chem. 47, 97 (1976).
Matsuo, M., and S. Urano: “C Nmr Spectra of Tocophenols and 2,2-Dimethylchromanols. Tetrahedron 32, 229 (1976).
Kaiser, R., A. Kappeler, and D. Lamparsky: Inhaltsstoffe des Osmanthus-Absolues. 3. Mitteil. Derivate der Theaspirane. HeIv. Chim. Acta 61, 387 (1978).
Frei, B., H. Eichenberger, B. Von Wartburg, H. R. Wolf, and O. Jeger: Photochemische Reaktionen, 94. Mitteil. Vinyloge 3-Spaltung bei Epoxy-enonen der JononReihe. HeIv. Chim. Acta 60, 2968 (1977).
Blount, J. F., R. L. Han, B. A. Pawson, R. G. Pitcher, and T. H. Williams: (E)- and (Z)-4-Methyl-5-[5-(2,6,6-trimethylcyclohexen-1 -yl)-3-methyl-2(L), 4(L)-pentadienylidene]-2(511)-furanone. Synthesis and Spectral Properties. J. Org. Chem. 41, 4108 (1976).
Behr, D., I. Wahlberg, T. Nishida, and C. R. Enzell: Tobacco Chemistry. 41. Structure Determination and Synthesis of 5(13),7E-Megastigmadien-6,9-diol, a New Constituent of Greek Tobacco. Acta Chem. Scand. B 31, 609 (1977).
Hanisch, P., A. J. Jones, A. F. Casey, and J. E. Coates: Carbon-13 Magnetic Resonance Evidence for Non-Chair Conformations in Tropane Derivatives. J. C. S. Perkin II. 1202 (1977).
Zetta, L., and G. Gattc 13C N.m.r. Spectra of Lysergic Acid Derivatives. II. Dihydrolysergamides. Org. Magn. Resonance 9, 218 (1977).
Ricca, R. S., and C. Casagrande: 15C Magnetic Resonance Studies of Reduced Proaporphinc Alkaloids. Org. Magn. Resonance 9, 8 (1977).
Verpoorte, R., and A. B. SvEndsi:N: Carbon-13 Nuclear Magnetic Resonance of Some Strychnos Alkaloids. Pharm. Weekbl. 111, 745 (1976).
Verpoorte, R., P. J. Hylands, and N. G. Bisset: Carbon-13 N. m. r. Spectroscopy of Some Strychnos Alkaloids. Org. Magn. Resonance 9, 567 (1977).
LeUng, J., and A. J. Jones: Carbon-13 N. m. r. Analysis of Selected Strychnos Alkaloids. Org. Magn. Resonance 9, 333 (1977).
Hughes, D. W., B. C. Nalliah, H. L. Holland, and D. B. Maclean: 13C Nuclear Magnetic Resonance Spectra of the Spirobenzylisoquinoline Alkaloids and Related Model Compounds. Can. J. Chem. 55, 3304 (1977).
Ronaldson, J. W.: Sporidesmins. XV. The 13C Nuclear Magnetic Resonance Spectra of Sporidesmin and Sporidesmin-D. The Evidence in the Spectra of Strain Imposed by an Epidithio Bridge. Aust. J. Chem. 29, 2307 (1976).
Van BtNst, G., D. TourwÉ, and E. DecoCK: Benzo-and Indoquinolizines. X. Application of Carbon-I3 N. M. R. to the Stereochemistry of the 4b,5,6,7,8a,10,11,16, 16h-Decahydrobibenzo[f,h[indolo-[2,3-a]quinolizine Isomers. Org. Magn. Resonance 8, 618 (1976).
Wesion, R. J., H. E. Gottlieb, E. W. Hagaman, and E. Wenkert: Carbon-l3 Nuclear Magnetic Resonance Spectroscopy of Naturally Occurring Substances. LI. Solanum Glycoalkaloids. Aust. J. Chem. 30, 917 (1977).
Cole, R. J.. J. W. Kirksey. R. H. Cox, and J. Clardy: Structure of the Tremor-Producing Indole, “f R-2. J. Agric. Food Chem. 23, 1015 (1975).
Cole, R. J., J. W. Porner, J. A. Lansden, R. II. Cox. C. Pape, G. Confer, S. S. Nicholson, and D. M. Bedell: Paspalum Staggers: Isolation and Identification of Tremorgenic Metabolites from Sclerotia of Clavicops paspali. J. Agric. Food Chem. 25, 1197 (1977).
JÖSsang, A., H. Jacquemin, J.-L. Pousset, A. Cave, M. Damak, and C. Riche: Structure de la Borreline, Nouvel Alcaloïde Indolique. Tetrahedron Letters 1219 (1977).
JÖSsang, A.. J.-L, Pousset, H. Jacquemin, and A. CavÉ: Structure de la Borrecarpine, Nouvel Alcaloïde Indolique. Tetrahedron Letters 4317 (1977).
Lounasmaa, M., and C.-J. Johansson: Synthetic Studies in the Alkaloid Field. IV. The Sodium Dithionite Reduction of 1-[2-(3-tndolyl)-ethyl]-3-methoxy-carbonyl Pyridinium Bromides. Tetrahedron 33, 113 (1977).
Bombardelli, E., A. Bonat1, B. Gabetta, E. Martinelli, G. Musiich, and B. Danielc 17-O-Acetyl-19,20-dihydrovoachalotine, a New Alkaloid from Voacanga chalotiana. Phytochemistry 15, 2021 (1976).
Pouta, C., A. Ahond, and T. Sevenet: Alcaloides de Acacia simplicifolia. Phytochemistry 15, 2019 (1976).
Melchio, J., A. Bouquet, M. Pais, and R. Goutarel: Alcaloïdes Indoliques. Cvi. Identité dc la Mayumbine et dc l’epi-I9 Ajmalicine. L’iso-3 Rauniticine, un Nouvel Alcalóide Extrait du Corynanthe mayumbensis (R. Good) N. Halle. Tetrahedron Letters 315 (1977).
Santamaria, J., D. Herlem, and F. KEtuoNG-Hog: Oxydation Photochimique d’Amines Tertiaires et d’Alcaloïdes Viii. Oxydation Photochimique d’Alcaloides Indolinoin-dolizidiniques. Vincadifformine et N(a)-Acétyt-dihydro-2,16-tabersonine. Tetrahedron 33, 2389 (1977).
Morita, Y., M. Hesse, H. Schmid, A. Banerji, J. Banerji, A. Chatteries, and W. E. Oberhansli: Alstonia scholaris, Struktur des Indolalkaloides Narelin. Hel,. Chim. Acta 60, 1419 (1977).
Das, B. C., J.-P. CossoN, and G. Lukacs: Structural Analysis by Carbon-13 Nuclear Magnetic Resonance Spectroscopy of Pleiocraline, a New Bisindole Alkaloid from Alstonia dephanchei van Heurck et Muell. Arg. J. Org. Chem. 42, 2785 (1977).
Wagner, H., R. BRÜNing, H. Lotter, and A. Jones: Die Struktur von Cassinin, einem neuen Sesquiterpenalkaloid aus Cassia metabolica Loes. Tetrahedron Letters 125 (1977).
Pelletier, S. W., N. V. Mods. and N. KArsul: The Structures of Sachaconitine and lsodefphinine from Aconitum miyabei Nakei. Tetrahedron Letters 4027 (1977).
Pelletier, S. W., N. V. Modp, and H. S. Pua: Structures of Falaconitine and Mithaconitine. Two Novel Diterpenoid Alkaloids from Aconitum jalconeri Stapf. J. C. S. Chem. Commun. 12 (1977).
Pelletier, S. W., and N. V. Moos: The Conformational Analysis of the E and F Rings of Atisine, Veatchine and Related Alkaloids. The Existence of C-20 Epimers. J. Am. Chem. Soc. 99, 284 (1977).
Pelletier, S. W., and N. V. Moos The C-20 Epimers of Atisine and Behaviour of the Oxazolidine Ring. Tetra- hedron Letters 1477 (1977).
Bozos, A., R. Cavier, F. Cossais, J.-P. Finet, J.-P. Jacquet, G. Lavielle, and N. Platzer: Synthese et Propriétés Amoebicides d’Analogues de l’Emétine. Analyse des Composés Nouveaux en 13C-Rmn. 1. (A) Alkyl-l-déséthyl-3-émétine à Jonction B/C ris ou trans. HeIv. Chin. Acta 60, 2122 (1977).
Ahond, A., F. Picot. P. Potier, C. Poupat, and T. SÉVenet: Alcaloïdes de Melicope leratiì. Phytochemistry 17, 166 (1978).
Stermitz, F. R., and I. A. Shariei: Alkaloids of Zanthoxylum ntonophyllum and Z. punctatum. Phytochemistry 16, 2003 (1977).
Zalkow, L. H., L. Gelbaum, and E. Keinan: Isolation of the Pyrrolizidine Alkaloid Europine N-oxide from Heliotropium maris-mortui and H. rotundifolium. Phytochemistry 17, 172 (1978).
Joshi, B. S., N. Viswanathan, D. H. Gawad, V. Balakrisiinan, and W. Von Philipsborn: Piperaceae Alkaloids. Part 1V. Structure and Synthesis of Cyclostachine A, Cyclostachine B and Cyclopiperstachine. Hely. Chim. Acta 58, 2295 (1975).
Davidar, A. M., F. Winternitz, and S. R. Johns: Structure of Ipomine, a New Alkaloid from 1pomoea muricata Jacq. Tetrahedron 33, 1733 (1977).
Lalonde, R. T., N. Mia-um/Am), and C. F. Wong: A Stereocontrolled Synthesis of (±) Anhydronupharamine. The `H and 13C Nuclear Magnetic Resonance of Piperidine Nuphar Alkaloids. J. Org. Chem. 42, 2113 (1977).
ChrisforlDjs, I., A. Welter, and J. Jadot: Spectaline and ‘so-6 Cassine. Two New Piperidin-3-ol Alkaloids from the Leaves of Cassia spectabilis. Tetrahedron 33, 977 (1977).
Arpin, N., J. Favre-Bonvin, and S. Thivend: Structure de la Mycosorine 2. Nouvelle Molecule. Isolée de Botrvtis cinerea. Tetrahedron Letters 819 (1977).
Coxon, B., A. J. Faiiaih. L. T. Sniegoski, H. S. Hertz, and R. Schaffer: A Novel Acylative Degradation of Uric Acid. Carbon-13 Nuclear Magnetic Resonance Studies of Uric Acid and its Degradation Products. J. Org. Chem. 42, 3132 (1977).
Kasai, H., K. Nakanishi, K. Frenkel, and D. Grunberger: Structures of 7,12- Dimethylbenzia]-anthracene 5,6-Oxide Derivatives Linked to the Ribose Moiety of Guanosine. J. Am. Chem. Soc. 99, 8500 (1977).
Bajura, G. S.. and W. G. Bentrude: Thymidine Nucleoside 3’,5’-Cyclic Phosphoramidites and Phosphites. Configuration at Phosphorus in Trivalent and Pentavent Cyclic Nucleotides by 31P and “C Nmr. Tetrahedron Letters 421 (1978).
Wegner, M. M., and H. Rapoport: Perhydrogenation of 2,8-Diaminopurin. J. Org. Chem. 42, 3065 (1977).
Chang, C., H. G. Floss, and W. Steck: Carbon-13 Magnetic Resonance Spectroscopy of Coumarins. Carbon-13-Proton Long-Range Couplings. J. Org. Chem. 42, 1337 (1977).
Chan, K. K., D. D. Giannini, A. H. Cain, J. D. Roberts, W. Porter. and W. F. Trager: Carbon-13 Nuclear Magnetic Resonance Studies of Coumarin and Related Compounds. Tetrahedron 33, 899 (1977).
Senda, Y., J. Ishiyama, S. Imam.. MI, and K. Hanaya: Carbon-13 Nuclear Magnetic Resonance Spectroscopy of 1-Tetralols and Chrolnan-4-ols. J. C. S. Perkin I, 217 (1977).
Pelter, A., R. S. Ward, and T. I. Gray: The Carbon-13 Nuclear Magnetic Resonance Spectra of Flavonoids and Related Compounds. J. C. S. Perkin I, 2475 (1976).
Wenkert, E., and H. E. Gottlieb: Carbon-13 Nuclear Magnetic Resonance Spectroscopy of Flavonoid and Isoflavonoid Compounds. Phytochemistry 16, 1811 (1977).
Chari, V. M., M. 1Lyas, H. Wagner, A. NeszmÉLyi, F. Chen, L. Chen, Y. Lin, and Y. Lin: 15C-Nmr Spectroscopy of Biflavanoids. Phytochemistry 16, 1273 (1977).
Desalbres, X., M. Duteil, J. Y. Lallemand, W. Degroot-Pfleiderer, and C. Veraloza: Carbon-13 N. m. r. Studies of Flavanone 5,3’,4’-Trihydroxy-713-Glucoside from Juelia subterranea (Balanophoraceae). Org. Magn. Resonance 9, 659 (1977).
Lallemand, J. Y., and M. Duteil: 13C N. m. r. Spectra of Quercetin and Rutin. Org. Magn. Resonance 9, 179 (1977).
Castelad, J. F., JR., O. R. Gottlieb, R. A. Delima, A. A. L. Mesquita, H. E. Gottlieb, and E. Wenkert: Xanthonolignoids from Kielmeyera and Caraipa Species -13C Nmr Spectroscopy of Xanthones. Phytochemistry 16, 735 (1977).
Idris, M. S. H., A. Jefferson, and F. Scheinmann: Extractive from Guttiferae. Part 33. Synthesis of the Ozonolysis Product from Dimethylmangostin, 1-Hydroxy3,6,7-trimethoxy-2,8-bis-(2-oxo ethyl)-xanthone, some 13C Nuclear Magnetic Resonance Spectra of Xanthones. J. C. S. Perkin I, 2158 (1977).
Westerman, P. W., S. P. Gunasekera, M. 1Jvais, S. Sultanbawa, and R. Kazlauskas: Carbon-13 N. m. r. Study of Naturally Occurring Xanthones. Org. M.gn. Resonance 9, 631 (1977).
Chalmers, A. A., G. J. H. Rall. and M. E. Oberholzer: 13C Nmr of Pterocarpans. Tetrahedron 33, 1735 (1977).
Plattner, R. D.. G. F. Spencer, D. Weisleder, and R. Kleiman: Chromanone Acids in Calophyllum brasiliense Seed Oil. Phytochemistry 13, 2597 (1974).
Schilling, E., K. Weinges, D. MÜLler, and W. Mayer: 13C-Nmr-Spektroskopisehe Konstitutionsermittlung der C30H24012-Procyamdine. Liebigs Ann. Chem. 1471 (1973).
Pomilio, A., B. Ellmann, K. KÜNstler, G. Schilling, and K. Weinges: Natur-stoffe aus Arzneipflanzen. Xxi. “C-Nmr-spektroskopische Untersuchungen an Flavanoiden. Liebigs Ann. Chem. 588 (1977).
Pomilio, A., O. MÜLler, G. Schilling, and K. Weinges: Zur Kenntnis der Proanthocyanidine. Xxii. Über die Konstitution der Kondensationsprodukte von Phenolen mit Flavyliumsalzen. Liebigs Ann. Chem. 597 (1977).
Pelter, A., R. Hansel, and M. Ks.i000: The Structure of Silychristin. Tetrahedron Letters 4547 (1977).
Wagner, H., V. M. Chari, M. Seitz, and I. Riess-Maurer: The Structure of Silychristin - A “C-Nmr Study. Tetrahedron Letters 381 (1978).
Dominguez, X. A., C. Martinez, A. Calero, X. A. Dominguez, JR., M. Hinojosa, and A. Zamudio: Louisfieserone, an Unusual Flavanone Derivative from Indigofera suffruticosa, Mill. Tetrahedron Letters 429 (1978).
Chari, V. M., N. Jordan, H. Wagner, and P. W. Thies: A “C-Nmr Study of the Structure of an Acyl-linarin from Valeriana wallichii. Phytochemistry 16, 1110 (1977).
Bedgelmans, R., and C. Morin: Action of Hydroxylamine on Chromone and Khellin. Oxime vs. Isoxazoles Structures. J. Org. Chem. 42, 1356 (1977).
Chopin, J., M. L. Bouillant, A. G. R. Nair, P. Ramesh, and T. J. Mabry: New C-Glycosylflavones from Mollugo distica T. Phytochemistry 17, 299 (1978).
Jensen, S. R., B. J. Nielsen, and V. Norn: Dihydrochalcones from Viburnum davidii and V. lantanoides. Phytochemistry 16, 2036 (1977).
Kaldas, M., I. Miura, and K. Hostettmann: Campestroside, a New Tetrahydroxanthone Glucoside from Gentian campestris. Phytochemistry 17, 295 (1978).
Mcdonald, 1. A., T. J. Simpson, and A. F. Sierakowski: “C Nmr Spectral Studies of Some Naturally Occurring Quinones and Related Compounds. Aust. J. Chem. 30, 1727 (1977).
HÖFle, G.: 13C-Nmr-Spektroskopie Chinoider Verbindungen. II. Substituierte 1,4Naphthochinone und Anthrachinone. Tetrahedron 33, 1936 (1977).
Huneck, S., W. Steglich, and G. HÖFle: Canarion, ein neues Naphthochinon aus Usnea canariensis. Phytochemistry 16, 121 (1977).
Stipanovic, R. D., A. A. Bell, D. H. O’Brien, and M. J. Lukefahr: Heliocide 14: An Insecticidal Sesterterpenoid from Cotton (Gossypium). Tetrahedron Letters 567 (1977).
Neville, G. A., F. B. Hasan, and I. C. P. Smith: Stereoselective Epimerization of Pilocarpine in Aqueous Solution as Determined by “C Nuclear Magnetic Resonance Spectroscopy. Can. J. Chem. 54, 2094 (1976).
Craigie, J. S., A. G. Mcinnes, M. A. Ragan, and J. A. Walter: Chemical Constituents of the Physodes of Brown Algae. Characterization by 1H and “C Nuclear Magnetic Resonance Spectroscopy of Oligomers of Phloroglucinol from Fucus vesiculosus (L). Can. J. Chem. 55, 1575 (1977).
Lounasmaa, M.: Dérivés Phloroglucinoliques d’Hagenia abyssinica. IV. Résonance Magnétique Nucléaire du “C de la Kasotoxine, du Pseudo-aspidinol et de l’aKosine. Acta Chem. Scand B31, 77 (1977).
Kelley, C. J., R. C. Harruff, and M. Carmack: The Polyphenolic Acids of Lithospermum ruderale. II. Carbon-13 Nuclear Magnetic Resonance of Lithospermic and Rosmarinic Acid. J. Org. Chem. 41, 449 (1976).
Arnone, A., L. Camarda, L. Merlini, and G. Nasini: ‘3C Nuclear Magnetic Resonance Spectral Analysis of Santalin and Santarubin Permethyl Ethers. J. C. S. Perkin I, 2118 (1977).
Harruff, R. C., and W. T. Jenkins: A 13C n. m. r. Study of the B6 Vitamins and their Aldimine Derivatives. Org. Magn. Resonance 8, 548 (1976).
Grande, H. J., R. Gast, C. G. Van Schlagen, W. J. H. Van Berkel, and F. Muller: 13C-Nmr Study on Isoalloxazine and Alloxazine Derivatives. HeIv. Chim. Acta 60, 367 (1977).
MacdoNald, J. C., G. G. Bishop, and M. Mazurek: ‘5C and Proton Nmr Spectra of 2 (1H)Pyrazinones. Tetrahedron 32, 655 (1976).
Glombitza, K.-W., H.-U. RÖSener, and M. Koch: Polyhydroxyoligophenyle und Phenyläther aus Bifurcaria bifurcata. Phytochemistry 15, 1279 (1976).
Anjaneyulu, A. S. R., A. M. Rao, V. K. Rao, L. R. Row, A. Pelter, and R. S. Ward: The Isolation and Structure of 6“-Bromo-Isoarboreol. The First Bromine Containing Lignan. Tetrahedron Letters 4697 (1975).
Anjaneyulu, A. S. R., P. A. Ramaiah, L. R. Row, A. Pelter, and R. S. Ward: The Stucture of Wodeshiol. The First of a New Series of Lignans. Tetrahedron Letters 2961 (1975).
Pelter, A., R. S. Ward, E. V. Rao, and K. U. Sastry: Revised Structures for Pluviatilol, Methyl Pluviatilol and Xanthoxylol. General Methods for the Assignment of Stereochemistry to 2,6-Diaryl-3,7-dioxabicyclo[3,3,0]octane Lignans. Tetrahedron 32, 2783 (1976).
Pelter, A., R. S. Ward, and C. NishtNO: Revised Structures for Epiaschantin and Epimagnolin. Tetrahedron Letters 4137 (1977).
Anjaneyulu, A. S. R., A. M. Rao, V. K. Rao, L. R. Row, A. Pelter, and R. S. Ward: Novel Hydroxy Lignans from the Heartwood of Gmelina arborea. Tetrahedron 33, 133 (1977).
Bailey, J. A., R. S. Burden, A. Mynett, and C. Brown: Metabolism of Phaseollin by Septoria nodorum and other Non-pathogens of Ptiaseolus vulgaris. Phytochemistry 16, 1541 (1977).
Langcake, P., and R. J. Pryce: Oxidative Dimerisation of 4-Hydroxystilbenes in vitro, Production of a Grapevine Phytoalexin Mimic. J. C. S. Chem. Commun. 208 (1977).
Kinnel, R., A. J. Duggan, T. Eisner, and J. MeinwAld: Panacene: An Aromatic Bromoallene from a Sea Hare (Aplysia brasiliana). Tetrahedron Letters 3913 (1977).
Nicollier, G., and R. Tabacchi: Isolement et Identification de l’évernine dans la „Mousse de chêne“ (EEernia prunastri (L.) Ach.). Helv. Chins. Acta 59, 2979 (1976).
Iro, S., and Y. Hirata: Isolation and Structure of a Mycosporine from the Zoanthid palythoa tuberculosa. Tetrahedron Letters 2429 (1977).
Muhlheirn, L. J., R. B. Befichey, D. P. Leworthy, and M. D. Osselton: Aurovertin B, a Metabolite of Calcarisporium arbuscula. J. C. S. Chem. Commun. 874 (1974).
Chen, P. N., D. G. I. Kingston, and J. R. Vercellottt: Reduction of Sterigmatocystin and Versicolorin A Hemiacetals with Sodium Borohydride. J. Org. Chem. 42, 3599 (1977).
Volkmann, R. A., P. D. Weeks, D. E. Kuhla, E. B. Whipple, and G. N. Ciimurny: Reaction of Kojic Acid and Its Derivatives with Acrylonitrile. A New Look at an Old Problem. J. Org. Chem. 42, 3976 (1977).
Niwa, M., M. Iguchi, and S. Yamamura: The Isolation and Structure of Obtusilactone. Tetrahedron Letters 1539 (1975).
Piestap, H. A., J. O. Bdnaeede, and E. A. RuvEda: Argentilactone, a Novel 5Hydroxyacid Lactose from Aristolochia argentina. Phytochemistry 16, 1579 (1977).
Engstrom, G. W., J. V. Delance, J. L. Richard, and A. L. Baetz: Purification and Characterization of Roseotoxin B, a Toxic Cyclodepsipeptide from Trichothecium roseum. J. Agric. Food Chem. 23, 244 (1975).
Marner, F.-J., R. E. MooRE, K. Hirotsu, and J. Clardy: Majusculamides A and B, Two Epimeric Lipodipeptides from Lyngbya majuscula Gomont. J. Org. Chem. 42, 2815 (1977).
Berger, S.: Vitamin C. A 13C Magnetic Resonance Study. Tetrahedron 33, 1587 (1977).
Perlin, A. S.: Carbon-13 N. M. R. Spectroscopy of Carbohydrates. Int. Rev. Sci. Org. Chem. 7, 1 (1976).
BurftTT, A. I. R., R: D. Guthrie, and R. W. Irvine: A 13C Nuclear Magnetic Resonance Study of Glycals (1,5-Anhydro-hox-1-enitols). Aust. J. Chem. 30, 1037 (1977).
Yamasaki, K., R. Kasai, Y. Masaki, M. Okihara, O. Tanaka, H. Oshio, S. Takagi, M. Yamaki, K. Maslda, E. Nonaki, M. Tsubot, and I. Nishioka: Application of C-13 Nmr to the Structural Elucidation of Acylated Plant Glycosides. Tetrahedron Letters 1231 (1977).
Dolak, L.: The C-13 Nmr Spectrum of Novohiocin. J. Antibiot. 29, 710 (1976).
Seto, H., Y. Miyazaki, K. Fujita, and N. Otake: Studies on the Ionophorous Antibiotics. X. The Assignment of 13C-Nmr Spectrum of Salinomycin. Tetrahedron Letters 2417 (1977).
Seto, H., T. Yahagt, Y. Miyazaki, and N. Otake: Utilization of Carbon-13-Carbon13 Coupling in Structural and Biosynthetic Studies. IX. Studies on the Ionophorous Antibiotics. IX. The Structure of 4-Methylsalinomycin (Narasin). J. Antibiot. 30, 530 (1977).
Chain, E. B., and G. Mellows: Pseudomonic Acid. Part 3. Structure of Pseudomonic Acid B. J. C. S. Perkin I, 318 (1977).
Connor, D. T., R. C. Greenough, and M. Von Strandtmann: W-7783, a Unique Antifungal Antibiotic. J. Org. Chem. 42, 3664 (1977).
Trofast, J., and B. WtCkrerg: Mycorrhizin A and Chloromycorrhizin A, Two Antibiotics from a Mycorrhizal Fungus of Monotropa hypopitys L. Tetrahedron 33, 875 (1977).
Wiley, P. F., R. B. Kelly, E. L. Caron, V. H. Wiley, J. H. Johnson, F. A. Mackellar, and S. A. Mizsak: Structure of Nogalamycin. J. Am. Chem. Soc. 99, 542 (1977).
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Wehrli, F.W., Nishida, T. (1979). The Use of Carbon-13 Nuclear Magnetic Resonance Spectroscopy in Natural Products Chemistry. In: Herz, W., Grisebach, H., Kirby, G.W. (eds) Fortschritte der Chemie Organischer Naturstoffe / Progress in the Chemistry of Organic Natural Products. Fortschritte der Chemie Organischer Naturstoffe / Progress in the Chemistry of Organic Natural Products, vol 36. Springer, Vienna. https://doi.org/10.1007/978-3-7091-3265-4_1
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