Novel triterpenoids from the fungus Ganoderma lucidum.

The structures of eight novel triterpenoids, ganoderiol C (1), D (2), E (3), F (4), G (5), H (6), I (7), and ganolucidic acid E (8), isolated from the fruiting body of Ganoderma lucidum were determined by spectroscopic methods. In addition, the absolute configuration at C-23 of ganolucidic acid D (9) was determined from the CD spectrum of its p-dimethylaminobenzoate derivative.