New steroidal glycosides from Tribulus terrestris L.
Two new steroidal glycosides were isolated from Tribulus terrestris L. Their structures were elucidated as 26-O-β-D-glucopyranosyl-5α-furostan-12-one-20(22)-ene-3β,23,26-triol-3-O-β-D-xylopyranosyl-(1 → 2)-[β-D-xylopyranosyl-(1 → 3)]-β-D-glucopyranosyl-(1 → 4)-[α-L-rhamnopyranosyl-(1 → 2)]-β-D-galactopyranoside (1) and 26-O-β-D-glucopyranosyl-5α-furostan-20(22)-ene-3β,23,26-triol-3-O-β-D-xylopyranosyl-(1 → 2)-[β-D-xylopyranosyl-(1 → 3)]-β-D-glucopyranosyl-(1 → 4)-[α-L-rhamnopyranosyl-(1 → 2)]-β-D-galactopyranoside (2) by spectroscopic methods including 1D and 2D NMR experiments.
School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang 110016, China.
Gang
G
Chen
Tao
T
Liu
Xuan
X
Lu
Hai-Feng
HF
Wang
Hui-Ming
HM
Hua
Yue-Hu
YH
Pei
D004365:Drugs, Chinese Herbal / Q000737:chemistry / Q000302:isolation & purification*; D006027:Glycosides / Q000737:chemistry / Q000302:isolation & purification*; D019906:Nuclear Magnetic Resonance, Biomolecular; D013237:Stereoisomerism; D013256:Steroids / Q000737:chemistry / Q000302:isolation & purification*; D032444:Tribulus / Q000737:chemistry*
C576127:26-O-beta-D-glucopyranosyl-5alpha-furostan-12-one-20(22)-ene-3beta,23,26-triol-3-O-beta-D-xylopyranosyl-(1-2)-(beta-D-xylopyranosyl-(1-3))-beta-D-glucopyranosyl-(1-4)-(alpha-L-rhamnopyranosyl-(1-2))-beta-D-galactopyranoside; C576126:26-O-beta-D-glucopyranosyl-5alpha-furostan-20(22)-ene-3beta,23,26-triol-3-O-beta-D-xylopyranosyl-(1-2)-(beta-D-xylopyranosyl-(1-3))-beta-D-glucopyranosyl-(1-4)-(alpha-L-rhamnopyranosyl-(1-2))beta-D-galactopyranoside; D004365:Drugs, Chinese Herbal; D006027:Glycosides; D013256:Steroids