A novel natural dammarane-type triterpene saponin from the leaves of Panax ginseng

Ginsenoside RS-9, a novel natural product, was isolated from the leaves of Panax ginseng C.A. Meyer by column chromatography. Its structure was determined as β-D-glucopyranoside, (3β, 12β)-12, 20-dihydroxydammar-24-en-3-yl, 6-acetate, by spectroscopic methods.