申请人:Orchid Chemicals & Pharmaceuticals Ltd.
公开号:EP1077214A1
公开(公告)日:2001-02-21
An improved process for the preparation of 5-[2-ethoxy-5-(4-methylpiperazin-1-ylsulphonyl)phenyl]-1-methyl-3-n.propyl-1,6-dihydro-7H-pyrazole[4,3-d]pyrimidin-7-one, which allows to obtain the desired product in good yield and high purity degree, is described.
本发明提供了一种改进的制备5-[2-乙氧基-5-(4-甲基哌嗪-1-基磺酰基)苯基]-1-甲基-3-正丙基-1,6-二氢-7H-吡唑[4,3-d]嘧啶-7-酮的方法,该方法可以获得良好的产率和高纯度的所需产品。