Two new furostanol saponins from Tribulus terrestris L.
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).
Xu
Tunhai
T
Department of Traditional Chinese Medicine Chemistry, School of Traditional Chinese Medicine, Beijing University of Chinese Medicine, Beijing 100102, PR China.
Xu
Yajuan
Y
Liu
Yue
Y
Xie
Shengxu
S
Si
Yunshan
Y
Xu
Dongming
D
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*
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