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Article Abstract
Ganoderma triterpenoids (GTs), a class of major active constituents in Ganoderma species, play an important role in the anti-obesity effect of Ganoderma fungi. In the study, seventeen new highly oxygenated lanostane triterpenoids, ganoapplanoids A-Q (1-17), together with five previously reported compounds (18-22), were isolated from the fruiting bodies of Ganoderma applanatum. Their structures were confirmed by comprehensive spectroscopic analyses, single-crystal X-ray diffraction and Mo(OAc) induced CD cotton effect. Structurally, compound 6 represents the first example of 2-norlanostane triterpenoid possessing an unusual semiacetal moiety. Furthermore, isolates (1-5, 7-11, 13-22, 3a) were evaluated for regulatory effects on lipid accumulation by 3T3-L1 adipocytes model. Among them, compounds 11 and 17 exhibited significant potency in blunted adipogenesis activities dose-dependently. Meanwhile, compounds 11 and 17 reduced triglyceride (TG) and total cholesterol (TC) levels in the adipocytes. These results supported that the highly oxygenated lanostane triterpenoids from G. applanatum may serve as agents for inhibiting the lipid accumulation in adipocytes and the G. applanatum provided an important source for searching new drugs to treat obesity.
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| http://dx.doi.org/10.1016/j.bioorg.2020.104263 | DOI Listing |
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