title: Lupane-triterpene glycosides from the leaves of Acanthopanax gracilistylus.
abstract: A novel lupane-triterpene glycoside, called wujiapioside B (1), was isolated from the leaves of Acanthopanax gracilistylus (Araliaceae) together with three known lupane-triterpene glycosides, acankoreoside C (2), acantrifoside A (3) and 3-epibetulinic acid 28-O-alpha-L-rhamnopyranosyl-(1-->4)-beta-D-glucopyranosyl-(1-->6)-beta-D-glucopyranosyl ester (4). Based on spectroscopic data, the chemical structure of 1 was determined as 3alpha,23-dihydroxy-lup-20(29)-en-28-oic acid 28-O-alpha-L-rhamnopyranosyl-(1-->4)-beta-D-glucopyranosyl-(1-->6)-beta-D-glucopyranosyl ester. Compounds 2-3 were obtained for the first time from this plant and compound 4 has not been isolated from Acanthopanax genus yet.
authors.affiliation: College of Pharmacy, Kyung-Hee University, Seoul, Korea. yookcs@khu.ac.kr
authors.forename: Chang-Soo
authors.initials: CS
authors.lastname: Yook
authors.forename: Xiang-Qian
authors.initials: XQ
authors.lastname: Liu
authors.forename: Seung-Yeup
authors.initials: SY
authors.lastname: Chang
authors.forename: Sang-Yong
authors.initials: SY
authors.lastname: Park
authors.forename: Toshihiro
authors.initials: T
authors.lastname: Nohara
mesh_terms: D028001:Eleutherococcus / Q000737:chemistry*; D010936:Plant Extracts / Q000737:chemistry / Q000302:isolation & purification; D018515:Plant Leaves / Q000737:chemistry; D014315:Triterpenes / Q000737:chemistry* / Q000302:isolation & purification
chemical_list: D010936:Plant Extracts; D014315:Triterpenes