| 发明名称 |
METHOD OF OBTAINING 5-[2-ETHOXY-5-(4-METHYLPIERAZIN-1-YLSULPHONYL)PHENYL]-1-METHYL-3-N-PROPYLO-1,6-DIHYDRO-7H-PYRAZOLE[4,3-D]PYRIMIDIN-7-ONE AND NOVEL INTERMEDIATE COMPOUNDS |
| 摘要 |
A process for the preparation of a compound of formula (I): <CHEM> also knows as sildenafil which comprises cyclisation of a compound of formula (II): <CHEM> |
| 申请公布号 |
PL189333(B1) |
申请公布日期 |
2005.07.29 |
| 申请号 |
PL19970320555 |
申请日期 |
1997.06.13 |
| 申请人 |
PFIZER IRELAND PHARMACEUTICALS |
发明人 |
DUNN PETER JAMES;WOOD ALBERT SHAW |
| 分类号 |
C07D295/22;A61K31/00;A61K31/505;A61K31/519;A61K31/635;A61P13/02;A61P15/00;A61P15/10;C07B61/00;C07D;C07D231/14;C07D231/40;C07D295/26;C07D403/12;C07D487/04 |
主分类号 |
C07D295/22 |
| 代理机构 |
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代理人 |
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