Arboreasides A-E, Triterpene Saponins from the Bark of Cussonia arborea

Five new triterpene saponins, arboreasides A-E (1-5), and two known saponins, ciwujianoside C-3 and 23-hydroxyursolic acid 28-O-(X-L-rhamnopyranosyl-(1 -> 4)-beta-D-glucopyranosyl-(1 -> 6)-beta-D-glucopyranosyl ester, were isolated from the bark of Cussonia arborea. The structures were established using extensive I D and 2D NMR spectroscopic analyses and mass spectrometry.