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 carbamation 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.
本发明提供了一种生产光学活性2-烯丙基
羧酸衍
生物的方法,该衍
生物可用作制药中间体,可从易得且廉价的起始材料中通过简单易行的工艺在商业规模上生产,并提供了一些2-烯丙基羧酰胺衍
生物,这些衍
生物是该过程中的新颖重要中间体。在碱的存在下,N-烯丙基羧酰胺衍
生物经历了选择性地重排反应,得到2-烯丙基羧酰胺衍
生物,所得衍
生物经过
碳酸化反应和溶剂解反应,得到光学活性的2-烯丙基
羧酸酯,然后使用酶对所得酯进行立体选择性
水解,制备具有高光学纯度的2-烯丙基
羧酸。此外,本发明还提供了一种2-烯丙基羧酰胺衍
生物化合物,该化合物是本发明过程中的新颖中间体。