STUDIES ON NEW MINOR SAPONINS ISOLATED FROM LEAWES OF PANAX GINSENG C. A. MEYER

Four minor compounds were isolated from the leaves of Panax ginseng C. A. Meyer and were characterized as 20(R)-protopanaxatriol (Ⅰ), daueosterin (Ⅱ), 3β, 12β-dihydroxy-dammar-20(22), 24-diene-3-O-β-D-glucopyranoside (Ⅲ) and 20(R)-protopanaxadiol-3-O-β-D-glucopyranoside (Ⅳ) on the basis of spectral analysis and chemical evidence. Ⅲ and Ⅳ were new saponins and named as ginseoside-Rh₃ and 20(R)-ginsenoside-Rh₂, respectively.