OBJECTIVE To investigate the minor triterpene saponins from the leaves of Panax ginseng C. A. Mey. METHODS The minor saponins were isolated and purified by the normal phase silica gel column chromatography and the reversed phase preparative HPLC. The structures of the isolated compounds were elucidated on the basis of MS and NMR spectroscopic data. RESULTS Five minor compounds were isolated and identified as ginsenoside Rk1( Ⅰ),ginsenoside Rk3( Ⅱ),ginsenoside Rh4( Ⅲ),ginsenoside Rg5( Ⅳ) and ginsenoside Rg6(...