Patent ID: 6888014
Filing Date: 2005-05-03
Classification: A61P,C07J

Abstract:
1. A process of preparing a sapogenin according to the formula: wherein R 1 is H or glc, R 2 is H or OH, R 3 is H or OH; and when R 1 , R 2 , and R 3 are H, there are double bonds at positions 20(21) and 24(25); and when R 1 is H, R 2 , is OH and R 3 is OH, there are double bonds at positions 20(22) and 25(26); and when R 1 is glc, R 2 is H and R 3 is H, there are double bonds at positions 20(21) and 24(25); which process comprises: producing a ginsenoside extract from plants selected from the group consisting of panax ginseng, panax quinguefol and panax notoginseng, or a sapogenin source from some other plant, and proceeding according to the following steps: