OPTICALLY ACTIVE 2-ALLYLCARBOXYLIC ACID DERIVATIVE AND PROCESS FOR PRODUCING THE SAME
申请人:KANEKA CORPORATION
公开号:EP1650187A1
公开(公告)日:2006-04-26
The present invention provides a process for producing an optically active 2-allylcarboxylic acid derivative, which is useful as a pharmaceutical intermediate, from readily available and inexpensive starting materials by the process which can be practiced on a commercial scale in a simple and easy manner, and certain 2-allylcarboxamide derivatives, which are novel and important intermediates in that process.
An N-allylcarboxamide derivative undergoes rearrangement reaction diastereoselectively in the presence of a base to give a 2-allylcarboxamide derivative, the resulting derivative is subjected to a carbamatiom reaction and solvolysis to give an optically active 2-allylcarboxylic acid ester, and then the ester obtained is stereoselectively hydrolyzed using an enzyme to produce 2-allylcarboxylic acid having a high optical purity. In addition, the present invention provides a 2-allylcarboxamide derivative compound which is a novel intermediate in the process of the present invention.
本发明提供了一种用容易获得的廉价起始原料生产光学活性 2-烯丙基羧酸衍生物的工艺,该衍生物可作为药物中间体,该工艺可在商业规模上以简单易行的方式实施,本发明还提供了某些 2-烯丙基甲酰胺衍生物,这些衍生物是该工艺中新颖而重要的中间体。
一种 N-烯丙基甲酰胺衍生物在碱存在下发生非对映选择性重排反应,生成 2-烯丙基甲酰胺衍生物,生成的衍生物经过氨基甲酰基反应和溶解反应生成具有光学活性的 2-烯丙基甲酸酯,然后使用酶对生成的酯进行立体选择性水解,生成具有高光学纯度的 2-烯丙基甲酸。此外,本发明还提供了一种 2-烯丙基甲酰胺衍生物化合物,它是本发明工艺中的一种新型中间体。