4.7 Article

New Ansamycins from the Deep-Sea-Derived Bacterium Ochrobactrum sp OUCMDZ-2164

Journal

MARINE DRUGS
Volume 16, Issue 8, Pages -

Publisher

MDPI
DOI: 10.3390/md16080282

Keywords

deep-sea-derived bacterium; Ochrobactrum sp.; ansamycins; trienomycins; cytotoxic activity

Funding

  1. National Natural Science Foundation of China (NSFC) [81561148012, U1501221, U1606403]
  2. Thailand Research Fund (TRF) through the International Research Network [IRN-58W0004]

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Two new ansamycins, trienomycins H (1) and I (2), together with the known trienomycinol (3), were isolated from the fermentation broth of the deep-sea-derived bacterium Ochrobactrum sp. OUCMDZ-2164. Their structures, including their absolute configurations, were elucidated based on spectroscopic analyses, ECD spectra, and Marfey's method. Compound 1 exhibited cytotoxic effects on A549 and K562 cell lines with IC50 values of 15 and 23 mu M, respectively.

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