抄録
From leaves of Panax japonicus C.A. MEYYR, ginsenoside-F17) and three new dammarane type saponins named chikusetsusaponins-L5 (I), -L10 (II) and -L9a (III) were isolated. The structures of I, II and III were elucidated mainly by mass, 13C-nuclear magnetic resonance and 1H-nuclear magnetic resonance spectroscopy including partially relaxed Fourier transform method.