Abstract
Phytochemical investigation of Hypericum sampsonii Hance resulted in the isolation of thirty-five polycyclic polyprenylated acylphloroglucinols including six new ones (1, 3, 5, and 15–17). Their structures were elucidated by UV, IR, NMR, HRESIMS, and calculated ECD analysis. Some compounds were evaluated for their anti-inflammatory effects in LPS-induced RAW264.7 cells. Compounds 1 and 26 showed significant inhibitory effects on LPS-induced NO production, and markedly suppressed the protein expression of iNOS and COX-2 in LPS-activated RAW264.7 cells.
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