title: Metabolic products of microorganisms. 234. Urdamycins, new angucycline antibiotics from Streptomyces fradiae. I. Isolation, characterization and biological properties.
abstract: The colored urdamycins A to F, six new angucycline antibiotics produced by Streptomyces fradiae strain Tü 2717, were detected by chemical screening. They are biologically active against Gram-positive bacteria and stem cells of murine L1210 leukemia. The urdamycins are glycosides and differ in their aglycones, which can be liberated by acidic hydrolysis besides the sugars D-olivose and L-rhodinose. The structure of the main compound, urdamycin A, follows from the spectroscopic and chemical data in connection with an X-ray analysis. The aglycone urdamycinone A is identical with aquayamycin. The structures of urdamycin B, E, F and partial structures of urdamycin C and D, will be presented in a subsequent paper. The new term "angucycline/angucyclinone" is used for an increasing group of related antibiotics.
mesh_terms: D000617:Aminoglycosides; D000818:Animals; D000880:Anthraquinones / Q000302:isolation & purification / Q000494:pharmacology; D000900:Anti-Bacterial Agents / Q000302:isolation & purification* / Q000494:pharmacology; D055598:Chemical Phenomena; D002621:Chemistry; D005285:Fermentation; D006027:Glycosides / Q000302:isolation & purification / Q000494:pharmacology; D009682:Magnetic Resonance Spectroscopy; D051379:Mice; D013302:Streptomyces / Q000378:metabolism*; D000095602:Angucyclines and Angucyclinones
chemical_list: D000617:Aminoglycosides; D000880:Anthraquinones; D000900:Anti-Bacterial Agents; D006027:Glycosides; C051487:urdamycin B; C051488:urdamycin E; C046608:kerriamycin B; D000095602:Angucyclines and Angucyclinones