Triterpene saponins from Aralia taibaiensis / 中草药

ABSTRACT

Objective: To study the triterpene saponins of Aralia taibaiensis. Methods The chemical components were separated and purified by Silica gel, Sephadex LH-20, and sp-HPLC; Their structures were elucidated by 1D/2D NMR, MS, and IR spectral data. Results Eight triterpene saponins were isolated and elucidated as taibaienoside IX (1), chikusetsusaponin 1 (2), chikusetsusaponin Iva (3), lucyoside H (4), narcissiflorine (5), araloside A (6), araliasaponin II (7), and 3-O-[β-D-glucopyranosyl-(1→2)-α-L- arabinopyranosyl]-oleanolic acid-28-O-[β-D-glucopyranosyl-(1→6)-β-D-glucopyranosyl] ester (8). Conclusion Compound 1 is a new oleanolic type triterpene saponin which named as taibaienoside IX, while compounds 4 and 8 are isolated from this plant for the first time.