Structural determination of salsolins A and B, new antioxidant polyoxygenated triterpenes from Salsola baryosma, by 1D and 2D NMR spectroscopy

Magn Reson Chem. 2008 Jan;46(1):94-8. doi: 10.1002/mrc.2119.

Abstract

Salsolins A (1) and B (2), the new triterpenes, have been isolated from the chloroform soluble fraction of Salsola baryosma along with 2alpha,3beta,23,24-tetrahydroxyurs-12-en-28-oic acid (3) reported for the first time from this species. Their structures have been assigned from 1H and 13C NMR spectra, DEPT and by 2D COSY, NOESY, HMQC and HMBC experiments. The compounds 1-3 showed significant antioxidant activity.

MeSH terms

  • Antioxidants / chemistry*
  • Antioxidants / isolation & purification
  • Deuterium
  • Magnetic Resonance Spectroscopy / methods*
  • Molecular Structure
  • Oxidation-Reduction
  • Salsola / chemistry*
  • Salsoline Alkaloids / chemistry*
  • Salsoline Alkaloids / isolation & purification
  • Triterpenes / chemistry*
  • Triterpenes / isolation & purification

Substances

  • Antioxidants
  • Salsoline Alkaloids
  • Triterpenes
  • salsoline A
  • salsoline B
  • Deuterium