Nortriterpene lactones from the fruits of Schisandra arisanensis
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Fractionation of an acetone extract from the fruits of Schisandra arisanensis afforded five new nortriterpene lactones,
compounds 1-5, together with four known compounds, schindilactones D and E (6 and 7) and preschisanartanins A
and B (8 and 9). Compound 1, a wuweiziartane-type nortriterpenoid, possesses a new type of fused ring system with
a γ-lactone ring between C-15 and C-17. Compounds 2, 6, and 7 may be categorized as schisanartane-type nortriterpenoids
and compounds 3-5, 8, and 9 as preschisanartane-type nortriterpenoids. The structures of the new compounds were
elucidated by 1D and 2D NMR spectroscopic data interpretation. The structure and relative configuration of 3 were
supported by single-crystal X-ray diffraction analysis. The antiviral activity against HSV-1 and inhibitory effects on
superoxide anion generation and elastase release by human neutrophils in response to FMLP/CB of compounds 1-9
were evaluated.
创建时间：
2013-06-12
