1961 年 9 巻 7 号 p. 524-528
Digitalinum verum hexaformate was submitted to deformylation with Amberlite IR-4B and was converted to a new formyl derivative, 16-formyldigitalinum verum monoformate. Deformylation with snail enzyme was carried out on this derivative and the corresponding 16-formyldigitalinum verum was obtained.