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Gualamycin, a novel acaricide produced by Streptomyces sp. NK11687. II. Structural elucidation
K Tsuchiya1, S Kobayashi, T Kurokawa
1Applied Microbiology Research Center, Nippon Kayaku Co. Ltd., Saitama, Japan.
The Journal of Antibiotics
|July 1, 1995
Abstract:
A novel acaricide, gualamycin was isolated from the culture broth of Streptomyces sp. NK11687. The structure of gualamycin was determined to be (2R,3S,4S)-2-O-[4-O-(2-amino-2-deoxy-beta-D-gulopyranosyl)-alpha-D - galactopyranosyl]-2,3,4-trihydroxy-4-[(2S,3S,4S,5S)-3,4-dihydroxy-5-hydr oxy - methylpyrrolidin-2-yl] butanoic acid by FAB-MS, 1H and 13C NMR, COSY, HMQC, HMBC, IR, X-ray crystallographic analyses and synthetic studies.