Two new furostanol saponins from Tribulus terrestris L.
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).
Xu
Tun-Hai
TH
Department of Traditional Chinese Medicine Chemistry, Beijing University of Chinese Medicine, Beijing, China.
Xu
Ya-Juan
YJ
Xie
Sheng-Xiu
SX
Zhao
Hong-Feng
HF
Han
Dong
D
Li
Yu
Y
Niu
Jian-Zhao
JZ
Xu
Dong-Ming
DM
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*
D004365:Drugs, Chinese Herbal; D012503:Saponins