1H and 13C NMR spectral data of new saponins from Cordia piauhiensis

Magn Reson Chem. 2007 Aug;45(8):692-4. doi: 10.1002/mrc.2026.

Abstract

Two new bidesmoside triterpenoid saponins were isolated from stems of Cordia piauhiensis. Their structures, characterized as 3-O-alpha-L-rhamnopyranosyl-(1 --> 2)-beta-D-glucopyranosyl pomolic acid 28-O-beta-D-glucopyranosyl ester (1) and 3-O-alpha-L-rhamnopyranosyl-(1 --> 2)-beta-D-glucopyranosyl oleanolic acid 28-O-beta-D-glucopyranosyl-(1 --> 6)-beta-D-glucopyranosyl ester (2), were unequivocally established after extensive NMR (1H, 13C, DEPT 135 degrees, COSY, HSQC, HMBC, TOCSY, and NOESY) studies.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Carbon Isotopes
  • Cordia / chemistry*
  • Magnetic Resonance Spectroscopy*
  • Molecular Conformation
  • Saponins / chemistry*
  • Saponins / isolation & purification

Substances

  • Carbon Isotopes
  • Saponins