发明名称 |
Pyrazolopyridylpyridazinone derivatives and process for the preparation thereof |
摘要 |
Novel pyrazolopyridylpyridazinone derivatives characterized by being represented by general formula (1) and pharnacologically acceptable salts thereof, which exhibit a phosphodiesterase inhibiting activity and have a selective potent bronchodilating effect on the respiratory tract; a process for the preparation of them; and bronchodilators containing the same as the active ingredient; wherein R1 is C1-C4 lower alkyl or C3-C6 cycloalkyl; and R2, R3, R4 and R5 are each independently hydrogen, C1-C4 lower alkyl or phenyl, or alternatively R3 and R5 may be united to form a double bond.
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申请公布号 |
US6265577(B1) |
申请公布日期 |
2001.07.24 |
申请号 |
US19990269734 |
申请日期 |
1999.04.05 |
申请人 |
KYORIN PHARMACEUTICALS CO., LTD. |
发明人 |
KOUNO YASUSHI;OGATA TAKENOBU;AWANO KATSUYA;MATSUZAWA KAYOKO;TOORU TAROH |
分类号 |
C07D471/04;(IPC1-7):C07D237/02;A61K31/496 |
主分类号 |
C07D471/04 |
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