Lanostane-type triterpenoids from the fruiting body of Ganoderma calidophilum

Six previously undescribed lanostanoids including four spiro-lactone lanostane triterpenoids (spiroganocalitones A-D) were isolated from fruiting body of Ganoderma calidophilum, together with twenty-three known ones. Ganoderone A showed moderate cytotoxic activity.205