Porothramycin, a new antibiotic of the anthramycin group: production, isolation, structure and biological activity.
A new antitumor antibiotic porothramycin was produced by a new strain of Streptomyces albus. The antibiotic was isolated in two active forms, the natural free hydroxyl form (porothramycin A) or the crystalline methyl ether form (porothramycin B) depending upon the isolation process used. Structural studies established that porothramycin is a new member of the pyrrolo[1,4]benzodiazepine group antibiotics having only one substituent on the benzene ring. The antibiotic exhibited antimicrobial activity against Gram-positive bacteria and anaerobes and significantly prolonged the survival times of mice implanted with experimental tumors.
Tsunakawa
M
M
Bristol-Myers Research Institute, Tokyo Research Center, Japan.
Kamei
H
H
Konishi
M
M
Miyaki
T
T
Oki
T
T
Kawaguchi
H
H
D000818:Animals; D000876:Anthramycin / Q000031:analogs & derivatives / Q000302:isolation & purification* / Q000494:pharmacology; D000903:Antibiotics, Antineoplastic / Q000302:isolation & purification* / Q000494:pharmacology; D001570:Benzodiazepinones / Q000302:isolation & purification*; D055598:Chemical Phenomena; D002621:Chemistry; D006094:Gram-Positive Bacteria / Q000187:drug effects; D006868:Hydrolysis; D007939:Leukemia L1210 / Q000188:drug therapy; D007941:Leukemia P388 / Q000188:drug therapy; D009682:Magnetic Resonance Spectroscopy; D008546:Melanoma, Experimental / Q000188:drug therapy; D051379:Mice; D008826:Microbial Sensitivity Tests; D013302:Streptomyces / Q000378:metabolism
D000903:Antibiotics, Antineoplastic; D001570:Benzodiazepinones; D000876:Anthramycin; C057883:porothramycin B; C057882:porothramycin A