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Isolation, structure determination and biological activity of a new glutarimide antibiotic, S632A3
Chun-Lei Cheng1, Qiong-Yan Liu, Li-Hui Chen
1Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, People's Republic of China.
Abstract:
A new antibiotic, S632A3, was isolated from a cultured broth of Streptomyces hygroscopicus S632. It was purified by column chromatography on silica gel, Sephadex LH-20 and HPLC. Structural studies by analysis of 1H NMR and 13C NMR, MS, UV and IR spectra in comparison with those of S632A2 clarified that S632A3 is an isomer of 9-methylstreptimidone. In addition, this antibiotic showed potent biological activity including differentiation induction effects on HL-60 cell and antitumour activity in vivo.
