SCHEDULED MAINTENANCE
From the root-bark extract of Rheedia benthamiana Pl. Triana (guttiferae) macluraxanthone (1) and three new xanthones, rheediaxanthone A (10), B (2), and C (9) have been isolated and their structures established. The presence of the optically active dihydrofurano-xanthone (2) was established in the crude extract. 13C N.m.r. spectral data of the isolated xanthones and their derivatives are reported.
F. D. Monache, B. Botta, M. Nicoletti, J. S. de Barros Coêlho and F. D. de Andrade Lyra, J. Chem. Soc., Perkin Trans. 1, 1981, 484 DOI: 10.1039/P19810000484
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