title: Two new furostanol saponins from Tribulus terrestris L.
abstract: Two new furostanol saponins, tribufurosides B (1) and C (2), were isolated from the fruits of Tribulus terrestris L. With the help of chemical and spectral analyses (IR, MS, 1D NMR and 2D NMR), the structures of two new furostanol saponins were established as 26-O-beta-d-glucopyranosyl-(25S)-5alpha-furost-20(22)-en-2alpha,3beta,26-triol-3-O-beta-d-galactopyranosyl(1 --> 2)-beta-d-glucopyranosyl(1 --> 2)-beta-d-galactopyranoside (1) and (25S)-5alpha-furost-20(22)-en-12-one-3beta, 26-diol-26-O-beta-d-glucopyranoside (2).
authors.affiliation: Department of Traditional Chinese Medicine Chemistry, Beijing University of Chinese Medicine, Beijing, China.
authors.forename: Tun-Hai
authors.initials: TH
authors.lastname: Xu
authors.forename: Ya-Juan
authors.initials: YJ
authors.lastname: Xu
authors.forename: Sheng-Xiu
authors.initials: SX
authors.lastname: Xie
authors.forename: Hong-Feng
authors.initials: HF
authors.lastname: Zhao
authors.forename: Dong
authors.initials: D
authors.lastname: Han
authors.forename: Yu
authors.initials: Y
authors.lastname: Li
authors.forename: Jian-Zhao
authors.initials: JZ
authors.lastname: Niu
authors.forename: Dong-Ming
authors.initials: DM
authors.lastname: Xu
mesh_terms: D004365:Drugs, Chinese Herbal / Q000737:chemistry; D009682:Magnetic Resonance Spectroscopy; D015394:Molecular Structure; D012503:Saponins / Q000737:chemistry / Q000302:isolation & purification*; D021241:Spectrometry, Mass, Electrospray Ionization; D032444:Tribulus / Q000737:chemistry*
chemical_list: D004365:Drugs, Chinese Herbal; D012503:Saponins