Bioactive dammarane triterpenoid saponins from the leaves of Cyclocarya paliurus

Thirteen undescribed dammarane triterpenoid saponins (cypaliurusides A–M), including eleven seco-dammarane type triterpenoids, were isolated from Cyclocarya paliurus. Each of these compounds has the unique feature of having a monosaccharide attached to C-11, rather than C-12, compared to the same type of saponins found in this plant. The structures of them were determined by comprehensive analysis of 1D, 2D NMR and HRESIMS data. Cypaliuruside J...