竹節人参の成分研究(第1報) : サポニンの分離精製 その1

抄録

Three kinds of saponin, named chikusetsusaponin-III, -IV, and -V, were isolated in crystalline form from a Chinese crude drug, Chikusetsu-Ninjin (rhizome of Panax japonicum C.A. MEYER ; Araliaceae), chikusetsusaponin-III, C₄₇H₈₀O₁₇·2H₂O, formed colorless prisms, mp 196-197°, and is protopanaxadiol or 20-epiprotopanaxadiol bonded with glucose and xylose. Chikusetsusaponin-IV, C₄₇H₇₄O₁₅·4H₂O, formed colorless prisms, mp 235° (decomp.), and is an oleanolic acid bonded with glucose, arabinose, and glucuronic acid, forming permethylated compound, C₅₇H₉₄O₁₆, of mp 141-142°. Chikusetsusaponin-V, mp 230° (decomp.), is an oleanolic acid bonded with glucose and glucuronic acid. Further elucidation of the total structure of these saponins is in progress.