New pregnane and steroidal glycosides from Tribulus terrestris L.
Three new steroidal saponins were isolated from the fruits of Tribulus terrestris L. Their structures were elucidated by spectroscopic and chemical analysis as 16beta-(4'-methyl-5'-O-beta-D-glucopyranosyl-pentanoxy)-5alpha-pregn-3beta-ol-12,20-dione-3-O-beta-D-glucopyranosyl-(1 --> 2)-beta-D-glucopyranosyl-(1 --> 4)-beta-D-galactopyranoside (1), 2alpha,3beta-dihydroxy-5alpha-pregn-16-en-20-one 3-O-beta-D-glucopyranosyl-(1 --> 4)-beta-D-galactopyranoside (2) and 26-O-beta-D-glucopyranosyl-(25R)-5alpha-furostan-20(22)-en-2alpha,3beta,26-triol-3-O-beta-D-glucopyranosyl-(1 --> 4)-beta-D-galactopyranoside (3).
Liu
Tao
T
School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang, China.
Chen
Gang
G
Yi
Guo-Qing
GQ
Xu
Jian-Kun
JK
Zhang
Tian-Long
TL
Hua
Hui-Ming
HM
Pei
Yue-Hu
YH
D004365:Drugs, Chinese Herbal / Q000737:chemistry / Q000302:isolation & purification*; D005638:Fruit / Q000737:chemistry; D015394:Molecular Structure; D011278:Pregnanes / Q000737:chemistry / Q000302:isolation & purification*; D012503:Saponins / Q000737:chemistry / Q000302:isolation & purification*; D013237:Stereoisomerism; D032444:Tribulus / Q000737:chemistry*
D004365:Drugs, Chinese Herbal; D011278:Pregnanes; D012503:Saponins