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[摘要]:Cultivation of Chaetomium mollipilium with nicotinamide, a NAD(+)-dependent HDAC inhibitor, stimulated its secondary metabolism, leading to the isolation of structurally diverse new C-13-polyketides, mollipilin A-E (1-5) as well as two known compounds (6 and 7). Spectroscopic methods, X-ray single crystal diffraction analysis, and VCD elucidated the absolute configurations of structures 1-6, and plausible biosynthetic pathways for 1-7 were proposed based on structural relationships. Mollipilins A (1) and B (2) exhibited moderate growth inhibitory effects on HCT-116 cells. |
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