Two new sulfated furostanol saponins from Tribulus terrestris

Z Naturforsch C J Biosci. Jan-Feb 2002;57(1-2):33-8. doi: 10.1515/znc-2002-1-206.


The known furostanol saponins methylprotodioscin and protodioscin and two new sulfated saponins, sodium salt of 26-O-beta-glucopyranosyl-22alpha-methoxy-(25R)-furost-5-ene-3beta,26-diol-3-O-alpha-rhamnopyranosyl-(1-->2)-beta-4-O-sulfo-glucopyranoside (methylprototribestin) and sodium salt of 26-O-beta-glucopyranosyl-22alpha-hydroxy-(25R)-furost-5-ene-3beta,26-diol-3-O-alpha-rhamnopyranosyl-(1-->2)-beta-4-O-sulfo-glucopyranoside (prototribestin) have been isolated from the aerial parts of Tribulus terrestris L. growing in Bulgaria. The structures of the new compounds were elucidated on the basis of 1D and 2D (DQF-COSY, TOCSY, HSQC-TOCSY, HSQC, HMBC, ROESY) NMR data, ESI mass spectra and chemical transformation.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Bulgaria
  • Carbohydrate Sequence
  • Magnetic Resonance Spectroscopy
  • Mass Spectrometry
  • Molecular Conformation
  • Molecular Sequence Data
  • Oligosaccharides / chemistry
  • Oligosaccharides / isolation & purification
  • Plants, Medicinal / chemistry
  • Rosaceae / chemistry*
  • Saponins / chemistry*
  • Saponins / isolation & purification
  • Spectrophotometry, Ultraviolet


  • Oligosaccharides
  • Saponins