title: Two new steroidal glucosides from Tribulus terrestris L.
abstract: Two new furostanol saponins, tribufurosides D (1) and E (2), were isolated from the fruits of Tribulus terrestris L. With the help of chemical and spectral analyses (IR, MS, 1D, and 2D NMR), the structures of the two new furostanol saponins were established as 26-O-beta-d-glucopyranosyl-(25S)-5alpha-furost-12-one-2alpha,3beta,22alpha,26-tetraol-3-O-beta-d-glucopyranosyl-(1 --> 4)-beta-d-galactopyranoside (1) and 26-O-beta-d-glucopyranosyl-(25R)-5alpha-furost-12-one-2alpha,3beta,22alpha,26-tetraol-3-O-beta-d-glucopyranosyl-(1 --> 4)-beta-d-galactopyranoside (2).
authors.affiliation: Institute of Traditional Chinese Medicine, Academy of Traditional Chinese Medicine and Material Medica of Jilin Province, Changchun, China.
authors.forename: Ya-Juan
authors.initials: YJ
authors.lastname: Xu
authors.forename: Tun-Hai
authors.initials: TH
authors.lastname: Xu
authors.forename: Yue
authors.initials: Y
authors.lastname: Liu
authors.forename: Sheng-Xu
authors.initials: SX
authors.lastname: Xie
authors.forename: Yun-Shan
authors.initials: YS
authors.lastname: Si
authors.forename: Dong-Ming
authors.initials: DM
authors.lastname: Xu
mesh_terms: D015394:Molecular Structure; D019906:Nuclear Magnetic Resonance, Biomolecular; D012503:Saponins / Q000737:chemistry / Q000302:isolation & purification*; D013256:Steroids / Q000737:chemistry / Q000302:isolation & purification*; D032444:Tribulus / Q000737:chemistry*
chemical_list: D012503:Saponins; D013256:Steroids; C547894:tribufuroside D