Preparation Method of Nucleoside Phosphoramidate Prodrugs and Intermediates Thereof
申请人:BrightGene Bio-Medical Technology Co., Ltd.
公开号:US20180237466A1
公开(公告)日:2018-08-23
Provided in the present disclosure are a novel preparation method of nucleoside phosphoramidate prodrugs and the intermediates thereof. In particular, the method is adopted to perform isomer separation on the reaction product from a first step and then perform a two-step chemical synthesis, so as to prepare a high-purity compound S
p
-1. The method has simple and convenient operation and low cost. The prepared resulting single isomer S
p
-1 has high purity, and the HPLC purity thereof is 95% or more, and further, 99% or more. The method is suitable for industrial production and can satisfy the need of clinical study. Further, also provided in the present disclosure are a key intermediate phosphorus reagent for preparing the high-purity compound S
p
-1 and the preparation method thereof.
本公开提供了一种新颖的核苷酸磷酰胺酯前药及其中间体的制备方法。具体而言,该方法被采用用于对第一步的反应产物进行异构体分离,然后进行两步化学合成,以制备高纯度化合物S
p
-1。该方法操作简单方便,成本低廉。制备得到的单一异构体S
p
-1具有高纯度,其HPLC纯度为95%或更高,进一步可达99%或更高。该方法适用于工业生产,并能满足临床研究的需求。此外,本公开还提供了用于制备高纯度化合物S
p
-1及其制备方法的关键中间体磷试剂。