Anserinones A and B: new antifungal and antibacterial benzoquinones from the coprophilous fungus Podospora anserina.

Two new benzoquinones with antifungal, antibacterial, and cytotoxic activities have been isolated from liquid cultures of the coprophilous fungus Podospora anserina. The structures of anserinones A (1) and B (2) were assigned on the basis of MS and NMR results, and the absolute stereochemistry of 2 was deduced by analysis of 1H-NMR data for its (R)- and (S)-2-phenylbutyryl ester derivatives.