著者所属:Central Research Laboratory, SS Pharmaceutical Co. Ltd. Central Research Laboratory, SS Pharmaceutical Co. Ltd. Institute of Pharmaceutical Sciences, School of Medicine, Hiroshima University
From a crude drug, toad cake (Bufonis Venenum), a new bufogenin was isolated and its structure was elucidated as 20, 21-epoxyresibufogenin by spectral analysis, mainly by 13C-NMR spectroscopy.