title: Medicinal foodstuffs. XXVII. Saponin constituents of gotu kola (2): structures of new ursane- and oleanane-type triterpene oligoglycosides, centellasaponins B, C, and D, from Centella asiatica cultivated in Sri Lanka.
abstract: Ursane- and oleanane-type triterpene oligoglycosides, centellasaponins B, C, and D, were isolated from the aerial parts of Centella asiatica (L.) Urban cultivated in Sri Lanka together with madecassoside, asiaticoside, asiaticoside B, and sceffoleoside A. The chemical structures of centellasaponins B, C, and D were determined on the basis of chemical and physicochemical evidence to be madecassic acid 28-O-beta-D-glucopyranosyl(1-->6)-beta-D-glucopyranoside, madasiatic acid 28-O-alpha-L-rhamnopyranosyl(1-->4)-beta-D-glucopyranosyl(1-->6)-beta-D-glucopyranoside, and 3beta,6beta,23-trihydroxyolean-12-en-28-oic acid 28-O-alpha-L-rhamnopyranosyl(1-->4)-beta-D-glucopyranosyl(1-->6)-beta-D-glucopyranoside, respectively.
authors.affiliation: Kyoto Pharmaceutical University, Japan.
authors.forename: H
authors.initials: H
authors.lastname: Matsuda
authors.forename: T
authors.initials: T
authors.lastname: Morikawa
authors.forename: H
authors.initials: H
authors.lastname: Ueda
authors.forename: M
authors.initials: M
authors.lastname: Yoshikawa
mesh_terms: D002240:Carbohydrate Sequence; D028041:Centella / Q000737:chemistry*; D006868:Hydrolysis; D008969:Molecular Sequence Data; D009828:Oleanolic Acid / Q000031:analogs & derivatives; D009844:Oligosaccharides / Q000032:analysis; D010936:Plant Extracts / Q000032:analysis; D010946:Plants, Medicinal / Q000737:chemistry*; D012503:Saponins / Q000032:analysis*; D016339:Spectrometry, Mass, Fast Atom Bombardment; D013188:Sri Lanka; D014315:Triterpenes / Q000032:analysis / Q000737:chemistry
chemical_list: D009844:Oligosaccharides; D010936:Plant Extracts; D012503:Saponins; D014315:Triterpenes; C450647:centellasaponin B; C450648:centellasaponin C; C450649:centellasaponin D; C413246:oleanane; D009828:Oleanolic Acid