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    • 1. 发明申请
    • PROCESS FOR THE PREPARATION OF LERSIVIRINE
    • 制备LERSIVIRINE的方法
    • WO2013050873A1
    • 2013-04-11
    • PCT/IB2012/002449
    • 2012-10-04
    • PHIVCO UK LIMITEDCODINA, AnnaDERRICK, AndrewJOYCE, RichardSUSANNE, Flavien
    • CODINA, AnnaDERRICK, AndrewJOYCE, RichardSUSANNE, Flavien
    • C07D231/18
    • C07D231/18
    • 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.
    • 本发明涉及制备莱赛维林或其药学上可接受的盐的方法,其包括:(a)在酸存在下使5-(2-氧代-1-丙酰基丁氧基)间苯二腈和2-肼基乙醇反应,形成 5 - {[3,5-二乙基-1-(2-羟基乙基)-1H-吡唑-4-基]氧基}间苯二腈,任选地,(b)使5 - {[3,5-二乙基-1- (2-羟乙基)-1H-吡唑-4-基]氧基}间苯二腈与合适的试剂反应形成5 - {[3,5-二乙基-1-(2-羟乙基)-1 H-吡唑-4-基]氧基}间苯二腈,其特征在于步骤(a)包括第一阶段,其中控制反应以保持反应温度在15-30℃和反应被控制的第二阶段 以保持反应温度在40-70℃之间。