PROCESS FOR THE PREPARATION OF AN INTERMEDIATE FOR A TRIAZOLOPYRIMIDINE CARBONUCLEOSIDE
申请人:ENANTIA, S.L.
公开号:US20150152114A1
公开(公告)日:2015-06-04
A process for the preparation of 4,6-dihalopyrimidin-5-amines of formula (II), or salts thereof, which comprises reacting 5-aminopyrimidin-4,6-diols of formula (III), or salts thereof, or a solvate either of the compound of formula (III) or of a salt thereof, with a halogenating agent, new intermediates useful in the preparation of the compound of formula (II) and processes for the preparation of these intermediates. The invention also refers to a process for the preparation of ticagrelor or a pharmaceutically acceptable salt thereof from 4,6-dihalo-2-(propylthio)pyrimidin-5-amine of formula (IIA).
一种制备式(II)的4,6-二卤代嘧啶-5-胺或其盐的方法,包括将式(III)的5-氨基嘧啶-4,6-二醇或其盐,或者该化合物的溶剂或其盐的溶剂与卤代试剂反应,以及制备该中间体的方法。本发明还涉及一种从式(IIA)的4,6-二卤代-2-(丙基硫)嘧啶-5-胺制备替卡格雷洛或其药学上可接受的盐的方法。