title: Chemical studies on tuberactinomycin. XV. Total synthesis of tuberactinomycin O.
abstract: Tuberactinomycin O, one of the four congeners of the antituberculous peptide tuberactinomycin, was totally synthesized. The beta-ureidodehydroalanine moiety was constructed from beta,beta-diethoxyalanine with excess urea in acidic medium after a cyclization reaction of a pentapeptide was finished. Cyclization was carried out by means of the 1-succinimidyl ester method. To the cyclic pentapeptide, beta-lysine was introduced as the branched moiety and then deprotected to afford tuberactinomycin O which was completely identified with the natural form of the antibiotic.
mesh_terms: D000904:Antibiotics, Antitubercular / Q000138:chemical synthesis* / Q000494:pharmacology; D001419:Bacteria / Q000187:drug effects; D055598:Chemical Phenomena; D002621:Chemistry; D003500:Cyclization; D009161:Mycobacterium / Q000187:drug effects
chemical_list: D000904:Antibiotics, Antitubercular