发明名称 Pürasolo[4,3-d]pürimidiin-7-oonide ja nende vaheühendite valmistamise protsess
摘要 A process is provided for the preparation of a compound of formulae (IA) (sidenafil/ ViagraTm TM ) and (IB) <CHEM> comprising reacting a compound of formula (IIA) and (IIB) respectively in the presence of <->OR, wherein R in the case of formation of compound (IA) is CH2CH3 and R in the case of formation of compound (IB) is CH2CH2CH3, where X is a leaving group: <CHEM>
申请公布号 EE9900507(A) 申请公布日期 2000.06.15
申请号 EE19990000507 申请日期 1999.10.12
申请人 PFIZER RESEARCH AND DEVELOPMENT COMPANY, N.V./S.A. 发明人 PETER JAMES DUNN;PHILIP CHARLES LEVETT
分类号 C07D295/22;A61K31/519;A61P15/10;C07D231/40;C07D231/54;C07D295/26;C07D401/02;C07D401/06;C07D487/00;C07D487/04;(IPC1-7):A61K31/505 主分类号 C07D295/22
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