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Transvalencin A, a thiazolidine zinc complex antibiotic produced by a clinical isolate of Nocardia transvalensis. II.
Yasutaka Hoshino1, Akira Mukai, Katsukiyo Yazawa
1Research Center for Pathogenic Fungi and Microbial Toxicoses, Chiba University, 1-8-1 Inohana, Chuo-ku, Chiba, Chiba 260-8673, Japan.
Abstract:
A novel antifungal antibiotic, transvalencin A, is produced by Nocardia transvalensis IFM 10065 isolated from a patient with actinomycotic mycetoma in Japan. The antibiotic structure was elucidated using NMR, mass spectrometric investigations, and X-ray crystallographic analysis. Transvalencin A is a 1:1 complex of a zinc and an organic acid with a phenolic substituent. Transvalencin A is comprised of o-substituted p-chlorophenol, tetrasubstituted oxazoline, disubstituted thiazolyl-N-methylthiazolidine and monosubstituted N-methylthiazolidine.
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