The present invention relates to processes for preparing a dihydropyrimidine derivative having Formula (I) or a tautomer thereof having Formula (Ia), as well as a intermediate thereof. The processes of the invention have simple operation, high optical purity of product, high yield and convenient work-up, which is suitable for industrial production.
本发明涉及制备具有式(I)的二氢
嘧啶衍
生物或具有式(Ia)的互变异构体以及其中间体的过程。本发明的工艺具有操作简单、产品光学纯度高、产率高和方便的工艺流程,适用于工业生产。