Lanostane triterpenoids from cultivated fruiting bodies of the basidiomycete Ganoderma australe.

A new lanostane triterpene (1), together with three known compounds (2-4), were isolated from cultivated fruiting bodies of the basidiomycete Ganoderma australe. The structure was elucidated on the basis of NMR spectroscopic and mass spectrometry data. The olefinic geometry of methyl australate (2) was revised from 20(22)Z to 20(22)E. These compounds (1-4) were different from the lanostanes isolated from mycelial cultures of the same strain source.