title: Leiyemudanosides A-C, three new bidesmosidic triterpenoid saponins from the roots of Caulophyllum robustum.
abstract: Three new oleanane bidesmosidic triterpenoid saponins, named leiyemudanosides A-C (1-3) were isolated from the roots of Caulophyllum robustum Maxim. Their structures were established by chemical and detailed spectroscopic analysis as 3-O-alpha-L-arabinopyranosyl-caulophyllogenin-28-O-beta-D-glucopyranosyl-(1-->6)-beta-D-glucopyranosyl ester (1), 3-O-beta-D-glucopyranosyl-(1-->3)-alpha-L-arabinopyranosyl-caulophyllogenin-28-O-alpha-L-rhamnopyranosyl-(1-->4)-beta-D-glucopyranosyl-(1-->6)-beta-D-glucopyranosyl ester (2), and 3-O-beta-D-glucopyranosyl-(1-->3)-alpha-L-arabinopyranosyl-echinocystic acid-28-O-alpha-L-rhamnopyranosyl-(1-->4)-beta-D-glucopyranosyl-(1-->6)-beta-D-glucopyranosyl ester (3), respectively.
authors.affiliation: Pharmaceutical College, Harbin Medical University, Harbin, PR China.
authors.forename: Guoyu
authors.initials: G
authors.lastname: Li
authors.forename: Yanhai
authors.initials: Y
authors.lastname: Zhang
authors.forename: Bingyou
authors.initials: B
authors.lastname: Yang
authors.forename: Yonggang
authors.initials: Y
authors.lastname: Xia
authors.forename: Yanlong
authors.initials: Y
authors.lastname: Zhang
authors.forename: Shaowa
authors.initials: S
authors.lastname: Lü
authors.forename: Haixue
authors.initials: H
authors.lastname: Kuang
mesh_terms: D028145:Caulophyllum / Q000737:chemistry*; D015394:Molecular Structure; D010936:Plant Extracts / Q000737:chemistry*; D018517:Plant Roots; D012503:Saponins / Q000737:chemistry / Q000302:isolation & purification*
chemical_list: C551163:3-O-arabinopyranosylcaulophyllogenin-28-O-glucopyranosyl-(1-6)-glucopyranosyl ester; C551164:3-O-glucopyranosyl-(1-3)-arabinopyranosylcaulophyllogenin-28-O-rhamnopyranosyl-(1-4)-glucopyranosyl-(1-6)-glucopyranosyl ester; C551165:3-O-glucopyranosyl-(1-3)-arabinopyranosylechinocystic acid-28-O-rhamnopyranosyl-(1-4)-glucopyranosyl-(1-6)-glucopyranosyl ester; D010936:Plant Extracts; D012503:Saponins