Abstract
Approaches to the synthesis of model compounds based on the tylosin-related macrolides desmycosin and O=mycaminosyltylonolide were developed to study the conformation and topography of the nascent peptide chain in the ribosome tunnel using specially designed peptide derivatives of macrolide antibiotics. A method for selective bromoacetylation of desmycosin at the hydroxyl group of mycinose was developed, which involves preliminary acetylation of mycaminose. The reaction of the 4″-bromoacetyl derivative of the antibiotic with cesium salts of the dipeptide Boc-Ala-Ala-OH and the hexapeptide MeOTr-Gly-Pro-Gly-Pro-Gly-Pro-OH led to the corresponding peptide derivatives of desmycosin. The protected peptides Boc-Ala-Ala-OH, Boc-Ala-Ala-Phe-OH, and Boc-Gly-Pro-Gly-Pro-Gly-Pro-OH were condensed with the C23-hydroxyl group of O-mycaminosyltylonolide.
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Abbreviations
- βAla:
-
β-alanine
- DCC:
-
N,N′-dicyclohexylcarbodiimide
- Des:
-
desmycosin
- DIEA:
-
diisopropylethylamine
- DMAP:
-
4-dimethylaminopyridine
- DNPH:
-
2,4-dinitrophenylhydrazine
- Glyc:
-
glycolyl
- HBTU:
-
N-hydroxybenzotriazolyluronium hexafluorophosphate
- MeOTr:
-
4-monomethoxytrityl
- OMT:
-
O-mycaminosyltylonolide
- PTC:
-
the peptidyl transferase center
- Tyl:
-
tylosin. All amino acids of the L series
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Original Russian Text © G.A. Korshunova, N.V. Sumbatyan, N.V. Fedorova, I.V. Kuznetsova, A.V. Shishkina, A.A. Bogdanov, 2007, published in Bioorganicheskaya Khimiya, 2007, Vol. 33, No. 2, pp. 235–244.
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Korshunova, G.A., Sumbatyan, N.V., Fedorova, N.V. et al. Peptide derivatives of tylosin-related macrolides. Russ J Bioorg Chem 33, 218–226 (2007). https://doi.org/10.1134/S1068162007020033
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DOI: https://doi.org/10.1134/S1068162007020033