title: Two new furostanol saponins from Tribulus terrestris L.
abstract: Two new furostanol glycosides, named tribufurosides I (1) J (2), were isolated from the fruits of Tribulus terrestris L. by a combination of chemical and spectroscopic methods. Its structures were established as 26-O-beta-D-glucopyranosyl-(25S)-5alpha-furost-12-one-2alpha,3beta,22alpha,26-tetraol-3-O-beta-D-glucopyranosyl (1-->2)-beta-d-glucopyranosyl (1-->4)-beta-d-galactopyranoside (1) and 26-O-beta-D-glucopyranosyl-(25R)-5alpha-furost-20(22)-en-12-one-2alpha,3beta,26-triol-3-O-beta-D-glucopyranosyl (1-->4)-beta-D-galactopyranoside (2).
authors.affiliation: Department of Traditional Chinese Medicine Chemistry, School of Traditional Chinese Medicine, Beijing University of Chinese Medicine, Beijing 100102, PR China.
authors.forename: Tunhai
authors.initials: T
authors.lastname: Xu
authors.forename: Yajuan
authors.initials: Y
authors.lastname: Xu
authors.forename: Yue
authors.initials: Y
authors.lastname: Liu
authors.forename: Shengxu
authors.initials: S
authors.lastname: Xie
authors.forename: Yunshan
authors.initials: Y
authors.lastname: Si
authors.forename: Dongming
authors.initials: D
authors.lastname: Xu
mesh_terms: D005638:Fruit; D015394:Molecular Structure; D010936:Plant Extracts / Q000737:chemistry / Q000302:isolation & purification*; D012503:Saponins / Q000737:chemistry / Q000302:isolation & purification*; D013261:Sterols / Q000737:chemistry / Q000302:isolation & purification*; D032444:Tribulus / Q000737:chemistry*
chemical_list: C544620:26-O-glucopyranosylfurost-12-one-2,3,22,26-tetraol-3-O-glucopyranosyl-1-2-glucopyranosyl-1-4-galactopyranoside; C544621:26-O-glucopyranosylfurost-20(22)-en-12-one-2,3,26-triol-3-O-glucopyranosyl-1-4-galactopyranoside; D010936:Plant Extracts; D012503:Saponins; D013261:Sterols