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Meroterpenoids with Immunosuppressive Activity from Edible Fungus Craterellus odoratus
Quan Dai1, Li-Ting Pang1, Fa-Lei Zhang1
1School of Pharmaceutical Sciences, South-Central Minzu University, Wuhan 430074, China.
Abstract:
Two unusual polyketide-sesquiterpene metabolites, craterodoratins T (1) and U (2), along with the known compound craterellin A (3), were isolated from the higher fungus Craterellus odoratus. The structures of isolated compounds were characterized based on nuclear magnetic resonance (NMR) and mass spectrum (MS) spectroscopic analysis, while the absolute configuration of the compounds was determined by theoretical NMR and electronic circular dichroism (ECD) calculations. Compound 1 possessed a rare structure with two aromatic groups. Compounds 1 and 3 showed immunosuppressive activity with IC50 values ranging from 5.516 to 19.953 μM.
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