title: Quadranosides I-V, new triterpene glucosides from the seeds of Combretum quadrangulare.
abstract: Five new triterpene glucosides, quadranosides I-V (1-5), have been isolated from a MeOH extract of the seeds of Combretum quadrangulare, together with 13 known compounds. The structures of compounds 1-5 were elucidated on the basis of spectroscopic analysis. Among the new triterpene glucosides, three compounds (1, 2, 5) showed significant hepatoprotective effects against D-galactosamine (D-GalN)/tumor necrosis factor-alpha (TNF-alpha)-induced cell death in primary cultured mouse hepatocytes.
authors.affiliation: Institute of Natural Medicine, Toyama Medical and Pharmaceutical University, 2630-Sugitani, Toyama 930-0194, Japan.
authors.forename: I K
authors.initials: IK
authors.lastname: Adnyana
authors.forename: Y
authors.initials: Y
authors.lastname: Tezuka
authors.forename: A H
authors.initials: AH
authors.lastname: Banskota
authors.forename: Q
authors.initials: Q
authors.lastname: Xiong
authors.forename: K Q
authors.initials: KQ
authors.lastname: Tran
authors.forename: S
authors.initials: S
authors.lastname: Kadota
mesh_terms: D000349:Africa; D000818:Animals; D000972:Antineoplastic Agents, Phytogenic / Q000302:isolation & purification* / Q000494:pharmacology; D001208:Asia; D002478:Cells, Cultured; D056486:Chemical and Drug Induced Liver Injury / Q000517:prevention & control; D002855:Chromatography, Thin Layer; D008099:Liver / Q000166:cytology / Q000187:drug effects / Q000378:metabolism; D009682:Magnetic Resonance Spectroscopy; D013058:Mass Spectrometry; D051379:Mice; D010946:Plants, Medicinal / Q000737:chemistry*; D012503:Saponins / Q000302:isolation & purification* / Q000494:pharmacology; D012639:Seeds / Q000737:chemistry; D013056:Spectrophotometry, Ultraviolet; D014409:Tumor Necrosis Factor-alpha / Q000096:biosynthesis
chemical_list: D000972:Antineoplastic Agents, Phytogenic; D012503:Saponins; D014409:Tumor Necrosis Factor-alpha