发明名称 |
Process for the preparation of pyrazolo¬4,3-d pyrimidin-7-ones and intermediates thereof |
摘要 |
<p>A process is provided for the preparation of compounds of formula (I) herein comprising reacting a compound of formula (II), (III), (IV) or (V) in the presence of <->OR<3> and a hydroxide trapping agent or in the case of compounds of formula (IV) reacting in the presence of an auxiliary base and a hydroxide trapping agent (i.e. <->OR<3> is substituted by the auxiliary base), wherein X is a leaving group and R<1> to R<4> are as defined.</p> |
申请公布号 |
EP1176147(A1) |
申请公布日期 |
2002.01.30 |
申请号 |
EP20010306123 |
申请日期 |
2001.07.17 |
申请人 |
PFIZER LIMITED;PFIZER INC. |
发明人 |
ALLERTON, CHARLOTTE MOIRA NORFOR;BARBER, CHRISTOPHER GORDON;DEVRIES, KEITH MICHAEL;HARRIS, LAURENCE JAMES;LEVETT, PHILIP CHARLES;NEGRI, JOANNA TERESA;RAWSON, DAVID JAMES;WOOD, ALBERT SHAW |
分类号 |
A61K31/519;A61P15/10;C07D487/04;(IPC1-7):C07D487/04 |
主分类号 |
A61K31/519 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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