Isolation and characterization of a new ginsenoside from the fresh root of panax ginseng

Abstract

A new saponin, malonylginsenoside Ra3, was isolated from the fresh root of Panax ginseng, along with four known ginsenosides. The new compound was identified as (20S)-protopanaxadiol-3-O-(6-O-malonyl-ß-D-glucopyranosyl(1- 2)-ß-D-glucopyranoside -20-O-ß-D-xylopyranosyl(1?3)-ß-D- glucopyranosyl(1?6)-ß-D-glucopyranoside on the basis of extensive 1D and 2D NMR as well as HRESI-MS spectroscopic data analysis. Copyright © 2010 by the authors.