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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.
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 1D, 2D NMR and TOF-MS spectral analysis.