Triterpenoid Saponins from Leaves and Stems of Panax Quinquefolium L

Abstract

In the chemical investigation on the saponin composition of leaves and stems of Panax quinquefolium L., two new minor dammarane saponins, quinquenoside L₁ (1) and L₂ (2) have been isolated. By means of physico-chemical evidences and spectral analysis their structures were established as 3-O-[β-D-glucopyranosyl-(1-2)-β-D-glucopyranosyl]-20-O-β-D-glucopyranosy-dammara-23,25-diene-3β, 12β, 20(S)-triol (1) and 3-O-[β-D-glucopyranosyl-(1-2)-β-D-glucopyranosyl]-20-O-β-D-D-glucopyranosyl-(24Z)-dammar-24-ene-3β, 12β, 20(S), 26-tetraol (2).

Key Words:

• Panax quinquefolium L.
• Araliaceae
• Triterpenoid saponin
• Quinquenoside L₁ and L₂