title: [Oleanolic acid saponins from the root bark of Aralia taibaiensis].
abstract: Five oleanolic acid saponins were isolated from the root bark of Aralia taibaiensis Z.Z. Wang et H.C. Zheng. By spectroscopic and chemical methods, they were identified as araloside A (1), 3-O-[alpha-L-arabinofuranosyl(1-->4)-6'-O-n-butyl-beta-D- glucuronopyranosyl]-oleanolic acid-28-O-beta-D-glucopyranoside (2), 3-O-[alpha-L-arabinofuranosyl(1-->4)-6'-O-ethyl-beta-D- glucuronopyra-nosyl]-oleanolic acid-28-O-beta-D-glucopyranoside (3), stipuleanoside R2(4) and 3-O-(beta-D-glucopyranosyl(1-->3) [alpha-L-arabinofuranosyl(1-->4)]-6'-O-ethyl-beta-D- glucuronopyranosyl)-oleanolic acid-28-O-beta-D-glucopyranoside (5). Saponin 1 and 4 were isolated from the title plant for the first time. 2, 3 and 5 are new compounds and named taibaienoside I, taibaienoside II and taibaienoside III, respectively.
authors.affiliation: Department of Pharmacy, Xijing Hospital, Fourth Military Medical University, Xian 710032.
authors.forename: H F
authors.initials: HF
authors.lastname: Tang
authors.forename: Y H
authors.initials: YH
authors.lastname: Yi
authors.forename: Z Z
authors.initials: ZZ
authors.lastname: Wang
authors.forename: Y P
authors.initials: YP
authors.lastname: Jiang
authors.forename: Y Q
authors.initials: YQ
authors.lastname: Li
mesh_terms: D027983:Aralia / Q000737:chemistry*; D004365:Drugs, Chinese Herbal / Q000737:chemistry*; D009828:Oleanolic Acid / Q000737:chemistry / Q000302:isolation & purification*; D010946:Plants, Medicinal / Q000737:chemistry*; D012503:Saponins / Q000737:chemistry / Q000302:isolation & purification*; D014315:Triterpenes / Q000737:chemistry / Q000302:isolation & purification*
chemical_list: D004365:Drugs, Chinese Herbal; D012503:Saponins; D014315:Triterpenes; C442152:taibaienoside I; D009828:Oleanolic Acid