3R-carboxylate enantiomer derivative of formula (III) can be prepared easily and selectively by the method of the present invention, and a highly pure D-erythro-2,2-difluoro-2-deoxy-1-oxoribose derivative can be prepared efficiently from the compound of formula (III) as an intermediate.
公式(III)的3R-
羧酸对映体衍
生物可以通过本发明的方法轻松选择性地制备,从公式(III)化合物作为中间体高效制备高纯度的D-erythro-2,2-difluoro-2-deoxy-1-oxoribose衍
生物。