title: Oleanolic acid saponins from root bark of Aralia elata.
abstract: Three new oleanolic acid glycosides, tarasaponins I-III, were isolated as their methyl esters from the root bark of Aralia elata together with four known glycosides, the methyl esters of chikusetsusaponins IVa, IV, 28-desglucosyl-chikusetsusaponin IV and pseudoginsenoside RT1. Tarasaponins I-III were characterized as oleanolic acid 3-O-[beta-D-glucopyranosyl(1-->3)][alpha-L-arabinofuranosyl(1-->4)[- beta-D-glucuronopyranoside, oleanolic acid 3-O-[beta-D-xylopyranosyl(1-->2)][beta-D-galactopyranosyl(1-->3)]-beta- D-glucuronopyranoside and beta-D-glucopyranosyl oleanolate 3-O-beta-D-galactopyranosyl(1-->3)-beta-D-glucuronopyranoside, respectively.
authors.affiliation: School of Pharmaceutical Sciences, Showa University, Tokyo, Japan.
authors.forename: S
authors.initials: S
authors.lastname: Sakai
authors.forename: M
authors.initials: M
authors.lastname: Katsumata
authors.forename: Y
authors.initials: Y
authors.lastname: Satoh
authors.forename: M
authors.initials: M
authors.lastname: Nagasao
authors.forename: M
authors.initials: M
authors.lastname: Miyakoshi
authors.forename: Y
authors.initials: Y
authors.lastname: Ida
authors.forename: J
authors.initials: J
authors.lastname: Shoji
mesh_terms: D002240:Carbohydrate Sequence; D007564:Japan; D009682:Magnetic Resonance Spectroscopy; D008969:Molecular Sequence Data; D009828:Oleanolic Acid / Q000737:chemistry / Q000302:isolation & purification*; D010946:Plants, Medicinal / Q000737:chemistry*; D012503:Saponins / Q000737:chemistry / Q000302:isolation & purification*
chemical_list: D012503:Saponins; D009828:Oleanolic Acid