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Ganoderma resinaceum is usually used as ethnomedicine for immune-regulation, hyperglycemia, and liver disease. To date, only a few chemical constituents have been reported from G . resinaceum . In this study, fifteen nortriterpenoids including six new nortriterpenoids ( 1 - 6 ) and nine known analogs ( 7 - 15 ), were separated and purified from the fruiting bodies of G . resinaceum . New compounds were identified as lucidone I ( 1 ), lucidone J ( 2 ), lucidone K ( 3 ), lucidone I ( 4 ), ganosineniol B ( 5 ), and ganosineniol C ( 6 ), based on analysis of extensive spectroscopic data (high resolution mass spectrometry (HRMS), nuclear magnetic resonance (NMR), infrared (IR), and ultraviolet (UV)). The known compounds were assigned as lucidone A ( 7 ), lucidone B ( 8 ), lucidone H ( 9 ), lucidone E ( 10 ), lucidone F ( 11 ), lucidone D ( 12 ), lucidone C ( 13 ), ganoderense F ( 14 ), and ganosineniol A ( 15 ), by comparing their spectroscopic data with those reported in the literature. Compounds 3 , 4 , and 7 - 13 were examined for α -glucosidase inhibitory activity and display no significant activity, but the finding may support that the side chain of ganoderma triterpenoids played an important role in α -glucosidase inhibitory activity.

Nortriterpenoids from the Fruiting Bodies of the Mushroom Ganoderma resinaceum