title: Characterization of new sweet triterpene saponins from Albizia myriophylla.
abstract: Five new oleanane-type triterpene saponins, albiziasaponins A-E (1-5), were isolated from the stems of Albizia myriophylla collected in Thailand, together with two known triterpene saponins, licorice-saponin F3 and yunganoside B(1). The structures of the new compounds were elucidated on the basis of chemical and physicochemical evidence. In addition, when sensory tests were performed on sweetness, albiziasaponin B (2), with a carbonyl group at the C-30 position, was found to show a potent sweetness intensity relative to sucrose (600 times).
authors.affiliation: Kyoto Pharmaceutical University, Misasagi, Yamashina-ku, Kyoto 607-8412, Japan.
authors.forename: Masayuki
authors.initials: M
authors.lastname: Yoshikawa
authors.forename: Toshio
authors.initials: T
authors.lastname: Morikawa
authors.forename: Kyoko
authors.initials: K
authors.lastname: Nakano
authors.forename: Yutana
authors.initials: Y
authors.lastname: Pongpiriyadacha
authors.forename: Toshiyuki
authors.initials: T
authors.lastname: Murakami
authors.forename: Hisashi
authors.initials: H
authors.lastname: Matsuda
mesh_terms: D000328:Adult; D031289:Albizzia / Q000737:chemistry*; D002240:Carbohydrate Sequence; D006801:Humans; D006868:Hydrolysis; D008969:Molecular Sequence Data; D015394:Molecular Structure; D019906:Nuclear Magnetic Resonance, Biomolecular; D009828:Oleanolic Acid / Q000031:analogs & derivatives / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology; D010945:Plants, Edible / Q000737:chemistry*; D012503:Saponins / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology; D013329:Structure-Activity Relationship; D013549:Sweetening Agents / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology; D013785:Thailand; D014315:Triterpenes / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology
chemical_list: D012503:Saponins; D013549:Sweetening Agents; D014315:Triterpenes; C471526:albiziasaponin A; C471527:albiziasaponin B; D009828:Oleanolic Acid