申请人:ONO PHARMACEUTICAL CO., LTD.
公开号:EP1350790A1
公开(公告)日:2003-10-08
The present invention relates to a method for the preparation of active ester, characterized by subjecting to a reaction a mixture of a carboxylic acid, which is a starting material, reagent which forms active ester and a base or a starting material carboxylic acid.
The present invention provides an active ester useful as an intermediate of pharmaceutical drugs etc. in high yield using an inexpensive reagent, in one-pot reaction, without causing isomerization, regardless of the structure of starting material carboxylic acid.
本发明涉及一种制备活性酯的方法,其特征在于将羧酸、形成活性酯的试剂和碱或起始材料羧酸的混合物经反应处理。本发明提供了一种活性酯,可用作制药等领域的中间体,利用廉价试剂高产率地进行一锅反应,无论起始材料羧酸的结构如何,均不会导致异构化。