| 发明名称 |
Novel chromone derivatives |
| 摘要 |
The present invention relates to novel chromone derivatives having effective antiallergic action with low toxicity, which are shown by the following formula (I) <IMAGE> wherein R is hydrogen or lower alkyl and A is <IMAGE> (R' is hydrogen or lower alkyl) or <IMAGE> and their physiologically acceptable salts.
|
| 申请公布号 |
US4085116(A) |
申请公布日期 |
1978.04.18 |
| 申请号 |
US19760669973 |
申请日期 |
1976.03.24 |
| 申请人 |
TAKEDA CHEMICAL INDUSTRIES, LTD. |
发明人 |
NOHARA, AKIRA;ISHIGURO, TOSHIHIRO;SANNO, YASUSHI |
| 分类号 |
C07D405/04;A61K31/41;A61P37/08;C07D311/22;(IPC1-7):A61K31/41;C07D257/04 |
主分类号 |
C07D405/04 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
|
| 地址 |
|
