Triterpene saponins from the leaves of Ilex kudingcha

J Nat Prod. 2005 Aug;68(8):1169-74. doi: 10.1021/np050043z.

Abstract

Nine new triterpene saponins, ilekudinosides K-S (1-9), and eight known triterpene saponins were isolated from the 70% ethanol extract of the leaves of Ilex kudingcha. The new saponins were characterized as 3-O-alpha-L-rhamnopyranosyl(1-->2)-beta-D-glucopyranosyl-alpha-kudinlactone (1), 3-O-beta-D-glucopyranosyl(1-->3)-alpha-L-arabinopyranosyl-beta-kudinlactone (2), 3-O-alpha-L-rhamnopyranosyl(1-->2)-alpha-L-arabinopyranosyl-gamma-kudinlactone (3), 3-O-beta-D-glucopyranosyl(1-->2)-beta-D-glucopyranosyl-alpha-kudinlactone (4), 3-O-beta-D-glucopyranosyl(1-->2)-alpha-L-arabinopyranosyl-alpha-kudinlactone (5), 3-O-beta-D-glucopyranosyl(1-->3)-alpha-L-arabinopyranosyl-alpha-kudinlactone (6), 3-O-alpha-L-rhamnopyranosyl(1-->2)-beta-D-glucopyranosyl-beta-kudinlactone (7), 3-O-alpha-L-rhamnopyranosyl(1-->2)-alpha-L-arabinopyranosyl-beta-kudinlactone (8), and 3-O-alpha-L-rhamnopyranosyl(1-->2)-beta-D-glucopyranosyl-gamma-kudinlactone (9), respectively. The structures and stereochemistry of compounds 1-9 were elucidated by spectroscopic data interpretation and chemical degradation.

MeSH terms

  • Drugs, Chinese Herbal / chemistry
  • Drugs, Chinese Herbal / isolation & purification*
  • Ilex / chemistry*
  • Molecular Structure
  • Nuclear Magnetic Resonance, Biomolecular
  • Plant Leaves / chemistry
  • Plants, Medicinal / chemistry*
  • Saponins / chemistry
  • Saponins / isolation & purification*
  • Triterpenes / chemistry
  • Triterpenes / isolation & purification*

Substances

  • Drugs, Chinese Herbal
  • Saponins
  • Triterpenes