New pregnane and steroidal glycosides from Tribulus terrestris L

J Asian Nat Prod Res. 2010 Mar;12(3):209-14. doi: 10.1080/10286020903535419.

Abstract

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).

MeSH terms

  • Drugs, Chinese Herbal / chemistry
  • Drugs, Chinese Herbal / isolation & purification*
  • Fruit / chemistry
  • Molecular Structure
  • Pregnanes / chemistry
  • Pregnanes / isolation & purification*
  • Saponins / chemistry
  • Saponins / isolation & purification*
  • Stereoisomerism
  • Tribulus / chemistry*

Substances

  • Drugs, Chinese Herbal
  • Pregnanes
  • Saponins