Author's Organization:Faculty of Pharmaceutical Sciences, School of Medicine, Hokkaido University Faculty of Pharmaceutical Sciences, School of Medicine, Hokkaido University Faculty of Pharmaceutical Sciences, School of Medicine, Hokkaido University Faculty of Pharmaceutical Sciences, School of Medicine, Hokkaido University
Conversion of hecogenin acetate to C-nor-D-homosapogenin and degradation of its spiroketal ring were achieved according to the scheme shown in Chart 1.