Three new dammarane-type triterpene saponins from the leaves of Panax ginseng C.A. Meyer

J Asian Nat Prod Res. 2010 Oct;12(10):865-73. doi: 10.1080/10286020.2010.508035.

Abstract

Three new dammarane-type triterpene ginsenosides, together with six known ginsenosides, were isolated from the leaves of Panax ginseng C.A. Meyer. The new saponins were named as ginsenoside Rh₁₁, ginsenoside Rh₁₂, and ginsenoside Rh₁₃. Their structures were elucidated as (20S)-3β,6α,12β,20-tetrahydroxydammara-25-ene-24-one 20-O-β-d-glucopyranoside (1), (20S)-3β,12β,20,24,25-pentahydroxydammarane 20-O-β-d-glucopyranoside (2), and (20S,23E)-3β,12β,20,25-tetrahydroxydammara-23-ene 20-O-β-d-glucopyranoside (3) on the basis of 1D and 2D NMR experiments and mass spectra. The known ginsenosides were identified as ginsenoside M(₇cd), ginsenoside Rg₆, ginsenoside Rb₃, gypenoside XVII, gypenoside IX, and 20-(E)-ginsenoside F₄.

MeSH terms

  • Dammaranes
  • Drugs, Chinese Herbal / chemistry
  • Drugs, Chinese Herbal / isolation & purification*
  • Ginsenosides / chemistry
  • Ginsenosides / isolation & purification*
  • Molecular Structure
  • Nuclear Magnetic Resonance, Biomolecular
  • Panax / chemistry*
  • Plant Leaves / chemistry
  • Saponins / chemistry
  • Saponins / isolation & purification*
  • Stereoisomerism
  • Triterpenes / chemistry
  • Triterpenes / isolation & purification*

Substances

  • Drugs, Chinese Herbal
  • Ginsenosides
  • Saponins
  • Triterpenes
  • ginsenoside Rh(11)
  • ginsenoside Rh(12)
  • ginsenoside Rh(13)
  • gypenoside IX