Chemical Studies on Oriental Plant Drugs. XIV. Protopanaxadiol, a Genuine Sapogenin of Ginseng Saponins

Abstract
The genuine sapogenin of ginsenosides-Rb1, -Rb2, and -Re, saponlns of Ginseng roots, was represented by protopanaxadiol, and panaxadiol was an artifact formed during the process of the acid hydrolysis of these saponlns.