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The Antitumor Antibiotics Complex of Aureolic Acids from the Marine Sediment-associated Strain of Streptomyces sp. KNIM 9048
来自海洋沉积物相关链霉菌菌株的金黄色酸的抗肿瘤抗生素复合物。KNIM 9048
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Nat Prod Commun ABSTRACT:A new antibiotic complex of six aureolic acids was isolated from the marine sediment-associated strain Streptomyces sp. KMM 9048. Four of the compounds (3-6) were found to be similar but not identical to the known chromomycins A₂, A₃, demethyl chromomycin A₃ and A₄. The two remaining.compounds; A₂₋₁ (1) and A₃₋₁ (2), were established as novel chromomycin analogs, which did not contain sugar B. Spectroscopic methods including ID and 2D NMR, and HRMS and MS/MS were applied for structure elucidation. Compounds 1-5 showed strong antimicrobial activity against Gram-positive indicatory bacteria Enterococcusfaecium, Staphylococcus aureus, S. epidernzidis, and Bacillus subtilis. Antitumor assay indicated that all tested compounds, in different manners, inhibited colony formation of RPMI-7951 and SK-Mel-28 cancer cells. T |
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