Abstract
A new isopentylated dibenzodioxocinone, canescenin A (1), and a new isopentylated pyran-3,5-dione derivative, canescenin B (2), were isolated from an extract of the deep-sea-derived fungus Penicillium canescens SCSIO z053. Their structures were elucidated by spectroscopic analysis. It was rare to obtain pyran-3,5-dione derivatives from nature. Antibacterial, cytotoxic, and antiviral activities of 1 and 2 were also evaluated.
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