Abstract
From the results obtained in the previous report (v.s.), the aglycone of rhodexin A is assumed to be sarmentogenin whose isolation from rhodexin A was successfully carried out by the Mannich method. Hydrolysis of rhodexin B with diluted alcohol containing 3.3% of hydrochloric acid yielded dianhydrorhodexigenin B which coincides with dianhydrogitoxigenin. The sugar obtained by the hydrolysis of rhodexin B was found to be rhamnose from its paper partition chromatogram and the phenylosazone. From these results, rhodexin B is assumed to be a new glycoside possessing gitoxigenin as an aglycone and rhamnose as its sugar.
