[Structure of the antineoplastic antibiotic variamycin].

The results of the structural study of antitumor antibiotic variamycin and its peracetyl derivative by 1H-and 13C-NMR spectroscopy are reported. Structures of carbohydrate chains of the antibiotics molecule are revised. Variamycin is shown to be 2-[beta-cymmarosyl(1-3)-beta-oliosyl (1-3)-beta-olivosyl]-6-[beta-olivosyl (1-3)-beta-olivosyl] chromomycinone.

Keywords

Carbon Isotopes, Antibiotics, Antineoplastic, Magnetic Resonance Spectroscopy, Molecular Structure, Plicamycin, Carbon

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