title: Eranthisaponins A and B, two new bisdesmosidic triterpene saponins from the tubers of Eranthis cilicica.
abstract: The present investigation aimed at the glycoside constituents of the tubers of Eranthis cilicica has resulted in the isolation of two new bisdesmosidic triterpene saponins based upon hederagenin, named eranthisaponins A (1) and B (2), along with four known triterpene saponins. The structures of the new saponins 1 and 2 were determined on the basis of spectroscopic analysis, including extensive 1D and 2D NMR data, and acid hydrolysis followed by chromatographic analysis. This is the first report concerning the secondary metabolites of E. cilicica.
authors.affiliation: School of Pharmacy, Tokyo University of Pharmacy and Life Science, 1432-1 Horinouchi, Hachioji, Tokyo 192-0392, Japan.
authors.forename: Kazuki
authors.initials: K
authors.lastname: Watanabe
authors.forename: Yoshihiro
authors.initials: Y
authors.lastname: Mimaki
authors.forename: Chiseko
authors.initials: C
authors.lastname: Sakuma
authors.forename: Yutaka
authors.initials: Y
authors.lastname: Sashida
mesh_terms: D002851:Chromatography, High Pressure Liquid; D006868:Hydrolysis; D007564:Japan; D015394:Molecular Structure; D019906:Nuclear Magnetic Resonance, Biomolecular; D029626:Ranunculaceae / Q000737:chemistry*; D012503:Saponins / Q000737:chemistry / Q000302:isolation & purification*; D013237:Stereoisomerism; D014315:Triterpenes / Q000737:chemistry / Q000302:isolation & purification*
chemical_list: D012503:Saponins; D014315:Triterpenes; C478734:eranthisaponin A; C478735:eranthisaponin B