title: Studies on the constituents of Clematis species. VII. Triterpenoid saponins from the roots of Clematis terniflora DC. var. robusta Tamura.
abstract: From the roots of Clematis terniflora, nine new oleanolic acid 3,28-O-bisdesmosides called clematernosides A, B, E, F, G, H, I, J and K, and two new hederagenin 3,28-O-bisdesmosides called clematernosides C and D, have been isolated together with two known saponins, huzhangoside B and clematichinenoside C. The structures of the new saponins have been elucidated based on chemical and spectral evidence. Among the new spaonins, clematernosides I and J have a nonasaccharide moiety and a total of twelve monosaccharide moieties in the molecule. This is the first report of the isolation and structure elucidation of such "big" glycosides.
authors.affiliation: Faculty of Pharmaceutical Sciences, Hokuriku University, Kanazawa, Japan.
authors.forename: Y
authors.initials: Y
authors.lastname: Kawata
authors.forename: H
authors.initials: H
authors.lastname: Kizu
authors.forename: T
authors.initials: T
authors.lastname: Tomimori
mesh_terms: D002236:Carbohydrate Conformation; D002240:Carbohydrate Sequence; D009682:Magnetic Resonance Spectroscopy; D008969:Molecular Sequence Data; D018517:Plant Roots / Q000737:chemistry*; D012503:Saponins / Q000032:analysis*; D016339:Spectrometry, Mass, Fast Atom Bombardment; D014315:Triterpenes / Q000737:chemistry*
chemical_list: D012503:Saponins; D014315:Triterpenes