title: Three triterpenoid saponins acylated with monoterpenic acid from Gymnocladus chinensis.
abstract: A new triterpenoid saponin acylated with monoterpenic acid, together with two known triterpenoid saponins, has been isolated from the fruit of Gymnocladus chinensis Baill. Their structures were elucidated as 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-((6S)-2-trans-2,6-dimethyl-6-hydroxy-2,7-octadienoyl)-β-L-arabinopyranosyl]-2,7-octadienoyl}-acacic acid 28-O-β-D-xylopyranosyl-(1 → 3)-β-D-xylopyranosyl-(1 → 4)-α-L-rhamnopyranosyl-(1 → 2)-[α-L-rhamnopyranosyl-(1 → 6)]-β-D-glucopyranosyl ester (1), gymnocladus saponin E (2), and gymnocladus saponin F(2) (3).
authors.affiliation: State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Science, Peking University, Beijng 100191, China.
authors.forename: Qi
authors.initials: Q
authors.lastname: Wen
authors.forename: Dan
authors.initials: D
authors.lastname: Yuan
authors.forename: Ke-Hui
authors.initials: KH
authors.lastname: Xie
authors.forename: Tian-Zhi
authors.initials: TZ
authors.lastname: Cai
authors.forename: Hong-Zheng
authors.initials: HZ
authors.lastname: Fu
mesh_terms: D002240:Carbohydrate Sequence; D004365:Drugs, Chinese Herbal / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology; D007887:Fabaceae / Q000737:chemistry*; D005638:Fruit / Q000737:chemistry; D015394:Molecular Structure; D039821:Monoterpenes / Q000737:chemistry*; D019906:Nuclear Magnetic Resonance, Biomolecular; D012503:Saponins / Q000737:chemistry / Q000302:isolation & purification*; D013237:Stereoisomerism; D014315:Triterpenes / Q000737:chemistry / Q000302:isolation & purification*
chemical_list: D004365:Drugs, Chinese Herbal; D039821:Monoterpenes; D012503:Saponins; D014315:Triterpenes; C561688:gymnocladus saponin E; C561689:gymnocladus saponin F2