Abstract
A new polyketide derivative, 2-chloro-3,4,7-trihydroxy-9-methoxy-1-methyl-6H-benzo[c]chromen-6-one (1), was isolated from the endophytic fungus Penicillium chermesinum. The structure was established on the basis of UV, IR, HR-ESI MS, and 1D and 2D NMR experiments. The cytotoxicity against four cancer cell lines (HuCCA-1, HepG2, A-549, and MOLT-3) of compound 1 are 14.94-115.71 µM.
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