Hypoglycemic Agents

is a very popular edible and medicinal mushroom used for the treatment of enervation and gastrointestinal diseases in Eastern Asia. Chemical investigation on the fruiting body ofled to the isolation of 4 new (1: - 4: ) and 10 known meroterpenoids (5:  - 14: ). The structures of new compounds were determined via analysis of NMR and MS data in combination with chemical derivatization. The inhibitory activities of 1:  - 14: against-glucosidase were evaluated using-nitrophenyl--D-glucopyranoside, sucrose, or maltose as substrate. Compounds 6, 9, 11: - 13: were demonstrated to show the-glucosidase inhibitory activities. This work confirms the potential ofin the treatment of diabetes.