Two novel steroidal saponins(timosaponin BⅢ-a,timosaponin BⅢ-b) together with a known steroidal saponin(timosaponin BⅡ-b) were prepared by the dilute acid hydrolysis of timosaponin BⅢ.Their structures were elucidated by means of 1D,2D NMR and TOF-MS spectral analysis.
Bin WuZhi Yu LiuMing Song FanZhao Lin SunWei Xin JiangCheng Gang Huang