New steroidal glycosides from Tribulus terrestris L

J Asian Nat Prod Res. 2012;14(8):780-4. doi: 10.1080/10286020.2012.694871. Epub 2012 Jun 14.

Abstract

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.

MeSH terms

  • Drugs, Chinese Herbal / chemistry
  • Drugs, Chinese Herbal / isolation & purification*
  • Glycosides / chemistry
  • Glycosides / isolation & purification*
  • Nuclear Magnetic Resonance, Biomolecular
  • Stereoisomerism
  • Steroids / chemistry
  • Steroids / isolation & purification*
  • Tribulus / chemistry*

Substances

  • 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
  • 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
  • Drugs, Chinese Herbal
  • Glycosides
  • Steroids