[EN] PROCESS FOR THE PREPARATION OF LERSIVIRINE<br/>[FR] PROCÉDÉ DE PRÉPARATION DE LERSIVIRINE
申请人:PHIVCO UK LTD
公开号:WO2013050873A1
公开(公告)日:2013-04-11
The present invention relates to a process for the preparation of lersivirine or a pharmaceutically acceptable salt thereof comprising: (a) reacting 5-(2-oxo-1-propanoylbutoxy)isophthalonitrile and 2- hydrazinoethanol, in the presence of an acid, to form 5-[3,5-diethyl-1 -(2- hydroxyethyl)-1 H-pyrazol-4-yl]oxy}isophthalonitrile, and optionally, (b) reacting 5-[3,5-diethyl-1-(2-hydroxyethyl)-1 H-pyrazol-4- yl]oxy}isophthalonitrile with a suitable reagent so as to form a pharmaceutically acceptable salt of 5-[3,5-diethyl-1-(2-hydroxyethyl)-1 H- pyrazol-4-yl]oxy}isophthalonitrile, characterised in that step (a) comprises a first stage wherein the reaction is controlled so as to maintain a reaction temperature between 15-30 °C and a second stage wherein the reaction is controlled so as to maintain a reaction temperature between 40-70 °C.
本发明涉及一种制备勒西韦或其药学上可接受的盐的过程,包括:(a)在酸的存在下,反应5-(2-氧代-1-丙酰基丁氧基)异苯二腈和2- 咪唑乙醇,形成5-[3,5-二乙基-1-(2-羟乙基)-1H-吡唑-4-基]氧基}异苯二腈,以及可选的,(b)将5-[3,5-二乙基-1-(2-羟乙基)-1H-吡唑-4- 基]氧基}异苯二腈与适当的试剂反应,以形成5-[3,5-二乙基-1-(2-羟乙基)-1H-吡唑-4-基]氧基}异苯二腈的药学上可接受的盐,其特征在于步骤(a)包括第一阶段,其中控制反应温度在15-30℃之间,并且第二阶段,在控制反应温度在40-70℃之间。