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J Nat Prod. 2006 Jul;69(7):995-1000.

Arugosins G and H: prenylated polyketides from the marine-derived fungus Emericellanidulans var. acristata.

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  • 1Institute for Pharmaceutical Biology, University of Bonn, Nussallee 6, D-53115 Bonn, Germany, and Oncotest GmbH, Institute of Experimental Oncology, Am Flughafen 12-14, D-79108 Freiburg, Germany.

Abstract

The fungus Emericella nidulans var. acristata was isolated as an endophyte from a Mediterranean green alga. Cultivation of this fungus yielded two new compounds, arugosins G (1) and H (2), together with the known metabolites 3-9. Arugosins (1-4) are benzophenone derivatives, biosynthetically related to the xanthones 5, 6, and 9. The indole alkaloid 7 displayed antitumor activity in a panel of 36 human tumor cell lines, exhibiting a mean IC(50) value of 5.5 microg/mL in an in vitro survival and proliferation assay. Furthermore, compounds 3 and 4 showed moderate antitumor activity toward individual tumor cell lines. None of compounds 1-8 exhibited any immunostimulatory activity assessed as the capacity to induce cytokines in PBMCs from healthy donors.

PMID:
16872131
DOI:
10.1021/np050454f
[PubMed - indexed for MEDLINE]
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