发明授权
- 专利标题： Synthesis of carboxylic acid derivatives
- 专利标题（中）： 羧酸衍生物的合成
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申请号： US068676申请日： 1998-05-14
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公开(公告)号： US5986132A公开(公告)日： 1999-11-16
- 发明人: Maxwell Reeve , Stephen Arthur Bowles
- 申请人： Maxwell Reeve , Stephen Arthur Bowles
- 申请人地址： GBX Oxford
- 专利权人： British Biotech Pharmaceuticals Ltd.
- 当前专利权人： British Biotech Pharmaceuticals Ltd.
- 当前专利权人地址： GBX Oxford
- 优先权： GBX9523637 19951118
- 主分类号： A61K31/00
- IPC分类号： A61K31/00 ; A61K31/165 ; A61K31/44 ; A61K31/4402 ; A61P43/00 ; C07C231/02 ; C07C231/12 ; C07C237/06 ; C07C237/22 ; C07C259/06 ; C07D213/75 ; C07D305/12 ; C07C229/26
摘要：
Compounds of formula (I) wherein R.sub.1, R.sub.2, R.sub.3, R.sub.4, X are as defined in the specification and are prepared by elimination of one of the groups X.sub.1 and X.sub.2 from a compound of formula (II) wherein X.sub.1 and X.sub.2 each independently represent a carboxylic acid group or salt thereof, or a protected carboxylic acid group, the non-eliminated group X.sub.1 or X.sub.2 corresponding to the group X in the desired compound of formula (I). ##STR1##
公开/授权文献
- USD390795S Marker/scribe for tape measure 公开/授权日：1998-02-17