| 发明名称 |
METHOD FOR THE PREPARATION OF PYRAZOLO(4,3-D)PYRIMIDIN-7- ONS AND INTERMEDIATE COMPOUNDS FOR THEIR PREPARATION |
| 摘要 |
The invention relates to a method for the preparation of the compound Cidenafil/Vigra m with the general formula IA and a comound with the general formula IB By the method the compounds with formulae IIA and IIB interreact in the presence of -OR, respectively, where R is CH2CH3 in the preparation of compound (IA), and for the production of compound (IB) R is CH2CH2CH3. In the formulae IIA and IIB means a splitting group. 23 claims |
| 申请公布号 |
BG63205(B1) |
申请公布日期 |
2001.06.29 |
| 申请号 |
BG19990103794 |
申请日期 |
1999.10.11 |
| 申请人 |
PFIZER RESEARCH AND DEVELOPMENT COMPANY N.V./S.A. |
发明人 |
DUNN, PETER J.;LEVETT, PHILIP C. |
| 分类号 |
C07D295/22;A61K31/519;A61P15/10;C07D;C07D231/40;C07D231/54;C07D295/21;C07D295/26;C07D295/30;C07D401/02;C07D401/06;C07D487/00;C07D487/04;(IPC1-7):C07D487/04 |
主分类号 |
C07D295/22 |
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