| 发明名称 |
Process for the preparation of chiral 3,4-epoxy benzopyrans. |
| 摘要 |
<p>A process for the preparation of a compound of formula (A)' or (A)'': <CHEM> which process comprises the base treatment of a quaternary ammonium salt of a compound of formula (D): <CHEM> wherein the NH2 and OH moieties are trans and are (R,S) or (S,R), respectively.</p> |
| 申请公布号 |
EP0430621(A2) |
申请公布日期 |
1991.06.05 |
| 申请号 |
EP19900312831 |
申请日期 |
1990.11.26 |
| 申请人 |
BEECHAM GROUP P.L.C. |
发明人 |
SMITH, PAUL, SMITHKLINE BEECHAM PHARMACEUTICALS;GHAVSHOU, MICHAEL, SMITHKLINE BEECHAM |
| 分类号 |
C07D303/08;A61K31/336;A61K31/35;A61K31/352;A61P9/12;A61P11/08;B01J31/02;C07B53/00;C07D303/04;C07D311/58;C07D493/04 |
主分类号 |
C07D303/08 |
| 代理机构 |
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代理人 |
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| 主权项 |
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| 地址 |
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