Abstract
Chemical investigation of an Antarctic deepsea derived fungus Penicillium sp. PR19 N-1 yielded five new eremophilane-type sesquiterpenes 1–5 and a new rare lactam-type eremophilane 6, together with three known compounds 7–9. The structures of these diverse sesquiterpenes were determined by extensive NMR and mass spectroscopic analyses. Compounds 1, 2, 4–6, 8 and 9 were evaluated for their cytotoxities against HL-60 and A-549 human cancer cell lines, and 5 was the most active one with IC50 value of 5.2 lM against the A-549 cells.
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