title: Ferensimycins A and B. Two polyether antibiotics. Taxonomy, fermentation, isolation, characterization and structural studies.
abstract: Ferensimycin A* (I), C34H59O10Na, mp 133 approximately 135 degrees C, and ferensimycin B** (II), C35H61O10Na, mp 143 approximately 145 degrees C, were isolated as their sodium salts from the fermentation broth of Streptomyces sp. No. 5057, a strain similar to Streptomyces myxogenes Shomura et al. The physicochemical data of I and II showed that they are both closely related congeners of lysocellin (III). Ferensimycins A and B exhibit activity against Gram-positive bacteria and are effective in the treatment of coccidiosis of fowl.
mesh_terms: D000818:Animals; D000900:Anti-Bacterial Agents / Q000096:biosynthesis* / Q000302:isolation & purification / Q000494:pharmacology; D001419:Bacteria / Q000187:drug effects; D055598:Chemical Phenomena; D002621:Chemistry; D002627:Chemistry, Physical; D004987:Ethers / Q000096:biosynthesis / Q000302:isolation & purification / Q000494:pharmacology; D005285:Fermentation; D005663:Furans; D007928:Lethal Dose 50; D009682:Magnetic Resonance Spectroscopy; D013058:Mass Spectrometry; D051379:Mice; D013302:Streptomyces / Q000145:classification / Q000378:metabolism*
chemical_list: D000900:Anti-Bacterial Agents; D004987:Ethers; D005663:Furans; C036272:ferensimycin A; C036271:ferensimycin B