J Integr Plant Biol. ›› 1992, Vol. 34 ›› Issue (6): -.

• Research Articles •    

Isolation and Identification of Saponins from Aralia decaisneana Hance

Fang Zha-pu, Zhou Ying-xin and Zeng Xian-yi   

Abstract: Three saponins (Ad-Ⅰ, Ad-Ⅱ, Ad-Ⅲ) were isolated from root bark of Aralia decaisneana Hance, and a prosapogenin Ad-Ⅳ was obtained from hydrolysis of Ad-Ⅲ. Their structures were elucidated by spectra (IR, FAB-MS, 1H-NMR, 13C- NMR) and chemical analyses (acid and base hydrolysis), they were araloside A(Ad-Ⅰ), 3-0- [α-L-arabinofuranosyl-(1→4)-β-D-glucuronopyranosyl-]-oleanolic acid (Ad-Ⅱ), 3-O-[β-D-galactopyranosyl-(1→4)-β-D-galactopyranosyl-(1→3)-β- D-glucuronopyranosyl-]-oleanolic acid-28-O-β-D-glucopyranoside (Ad-Ⅲ), 3-0- [ -β-D-galact opyranosyl- ( 1 →4)-β-D-galactopyranosyl-( 1→3 )-β-D-glucuronopyrano- syl-]-oleanlic acid (Ad-Ⅳ). Ad-Ⅰ and Ⅱ are for the first time found in this Plant, Ad-Ⅲ and Ⅳ are new compounds.

Key words: Aralia decaisneana, Araloside A, 3-O-[α-L-arabinofuranosyl-(1→4)-β-D-glucuronopyranosyl-]-oleanolic acid, 3-O-[β-D-galactopyranosyl-(1→ 4)-β-D-galactopyrano syl-( 1 →3)-β-D-glucuronopyranosyl- ]-ole

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