New triterpenoid saponins from leaves of Panax japonicus (3). Saponins of the specimens collected in Miyazaki Prefecture

摘要

Two new dammarane-type triterpenoid saponins, chikusetsusaponin LM _1 (1), chikusetsusaponin LM _2 (2), and three known triterpenoid saponins, ginsenoside Re (3), ginsenoside Rg _1 (4), ginsenoside F _3 (5), were isolated from the leaves of P. japonicus C. A. Meyer collected in Miyazaki prefecture, Japan. The structures of new chikusetsusaponins were elucidated on the basis of spectroscopic and physicochemical evidences.