发明授权
![3,4-dihydro-2H-benzo[1,4]oxazine derivatives](/docs/US/2001-04-24/US06221863B1/abs.jpg.600x600.jpg)
- 专利标题： 3,4-dihydro-2H-benzo[1,4]oxazine derivatives
- 专利标题（中）： 3,4-二氢-2H-苯并[1,4]恶嗪衍生物
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申请号： US09475383申请日： 1999-12-30
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公开(公告)号： US06221863B1公开(公告)日： 2001-04-24
- 发明人: Richard E. Mewshaw , Uresh S. Shah
- 申请人： Richard E. Mewshaw , Uresh S. Shah
- 主分类号： A61K31538
- IPC分类号： A61K31538
![3,4-dihydro-2H-benzo[1,4]oxazine derivatives](/abs-image/US/2001/04/24/US06221863B1/abs.jpg.150x150.jpg)
摘要：
Compounds are provided having the following formula: wherein: R1 is hydrogen or halogen; R2 is hydrogen, alkoxy or carboximide; R3 is hydrogen, alkyl, alkylaryl, aryl or substituted aryl; R4 is hydrogen, CN, halogen, or carboximide; and X is CH or N; or pharmaceutically acceptable salts thereof.
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