Studies on the Constituents of Digitalis purpurea L. XIII. On the Diacyl Derivatives of Digitalinum Verum.

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Digitalinum verum hexaacetate, hexapropionate, and monoacetyl pentapropionate were submitted to deacylation with potassium hydrogen carbonate under suitable conditions and these acyl derivatives were converted to diacyl derivatives possessing one acyl group each in the 16-position of gitoxigenin and in the digitalose portion. Some examinations were made on the properties of the newly formed derivatives.