New polyketides from the basidiomycetous fungus sp.

Two new polyketides, pholiotones B and C ( and ), and four known compounds, trichodermatide D (), vermistatin (), dehydroaltenuene A () and terpestacin () were isolated from the crude extract of sp. Their structures were identified by NMR and MS spectroscopic data. The absolute configurations of compounds and were elucidated by modified Mosher's method, electronic circular dichroism (ECD) calculations and C NMR calculations as well as DP4+ probability analyses. All the compounds were evaluated for their antifungal and cytotoxicity.