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. 2002 Oct;55(10):893-8.
doi: 10.7164/antibiotics.55.893.

Chalcomycin B, a new macrolide antibiotic from the marine isolate Streptomyces sp. B7064

Ratnakar N Asolkar  1 , Rajendra P Maskey, Elisabeth Helmke, Hartmut Laatsch
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Free article

Chalcomycin B, a new macrolide antibiotic from the marine isolate Streptomyces sp. B7064

Ratnakar N Asolkar et al. J Antibiot (Tokyo). 2002 Oct.
Free article

Abstract

In our screening of marine streptomycete isolates for bioactive components, a new macrolide antibiotic designated as chalcomycin B (1b) was isolated from the culture broth of a marine Streptomycete isolate B7064 together with chalcomycin (1a) as the active principles. The structure of the new antibiotic was determined by EI and ESI MS, 1H, 13C and 2D NMR spectroscopy and by comparison of the NMR data with those of chalcomycin.

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