title: Structural determination of two new triterpenoid saponins acylated with monoterpenic acid from Gymnocladus chinensis Baill.
abstract: Two new triterpenoid saponins acylated with monoterpenic acid, 2β,23-dihydroxy-3-O-α-L-rhamnopyranosyl-21-O-{(6S)-2-trans-2,6-dimethyl-6-O-[3-O-(β-D-glucopyranosyl)-4-O-(2-methylbutanoyl)-β-L-arabinopyranosyl]-2,7-octadienoyl)-acacic acid 28-O-β-D-xylopyranosyl-(1 → 3)-β-D-xylopyranosyl-(1 → 4)-[β-D-glucopyranosyl-(1 → 3)]-α-L-rhamnopyranosyl-(1 → 2)-[α-L-rhamnopyranosyl-(1 → 6)]-β-D-glucopyranosyl ester and 2β,23-dihydroxy-3-O-α-L-rhamnopyranosyl-21-O-{(6S)-2-trans-2,6-dimethyl-6-O-[4-O-((6S)-2-trans-2,6-dimethyl-6-O-(β-L-arabinopyranosyl)-2,7-octadienoyl)]-β-L-arabinopyranosyl]-2,7-octadienoyl}-acacic acid 28-O-β-D-xylopyranosyl-(1 → 3)-β-D-xylopyranosyl-(1 → 4)-[β-D-glucopyranosyl-(1 → 3)]-α-L-rhamnopyranosyl-(1 → 2)-[α-L-rhamnopyranosyl-(1 → 6)]-β-D-glucopyranosyl ester were isolated from the fruit of Gymnocladus chinensis Baill. and the structural elucidation of both the compounds was accomplished by extensive studies of their spectroscopic (1D and 2D NMR, TOF-MS, QFT-MS) and chemical methods.
authors.affiliation: State Key Laboratory of Natural and Biomimetic Drugs, Peking University, Beijing 100191, China.
authors.forename: Wen
authors.initials: W
authors.lastname: Qi
authors.forename: Dan
authors.initials: D
authors.lastname: Yuan
authors.forename: Lian-Mei
authors.initials: LM
authors.lastname: Yang
authors.forename: Ke-Hui
authors.initials: KH
authors.lastname: Xie
authors.forename: Tian-Zhi
authors.initials: TZ
authors.lastname: Cai
authors.forename: Rong
authors.initials: R
authors.lastname: Yang
authors.forename: Hong-Zheng
authors.initials: HZ
authors.lastname: Fu
mesh_terms: D007887:Fabaceae / Q000737:chemistry*; D015394:Molecular Structure; D012503:Saponins / Q000737:chemistry*; D014315:Triterpenes / Q000737:chemistry*
chemical_list: D012503:Saponins; D014315:Triterpenes