Disclosed is a process for producing an optically active indoline-2-cabroxylic acid or a derivative thereof, which is useful as a raw material for synthesis of pharmaceuticals or the like, from an indoline-2-cabroxylic acid in an industrially advantageous manner.
An indoline-2-cabroxylic acid is converted into an N-substituted-indoline-2-carboxylic acid, and then is esterified using a biocatalyst having a stereoselectivity in an organic solvent containing an alcohol. Next, an alkali is used to obtain an optically active N-substituted-indoline-2-carboxylic acid ester and an optically active N-substituted-indoline-2-cabroxylic acid or a salt thereof, and then the two optically active substances are separated utilizing distribution properties thereof in an organic solvent/water system. Further, the two substances are hydrolyzed and deprotected, whereby the optically active indoline-2-cabroyxlic acid or a derivative thereof, which is useful as a raw material for synthesis of pharmaceuticals or the like, can be produced and provided economically.
本发明公开了一种从
吲哚啉-2-羧酸以工业上有利的方式制备光学活性
吲哚啉-2-羧酸或其衍
生物的工艺。将
吲哚啉-2-羧酸转化为N-取代
吲哚啉-2-羧酸,然后在含有醇的有机溶剂中使用具有立体选择性的
生物催化剂酯化。接下来,使用碱得到光学活性的N-取代
吲哚啉-2-羧酸酯和光学活性的N-取代
吲哚啉-2-羧酸或其盐,然后利用它们在有机溶剂/
水体系中的分配特性分离这两种光学活性物质。进一步,这两种物质被
水解和去保护,从而可以经济地生产和提供用作制药等领域的原料的光学活性
吲哚啉-2-羧酸或其衍
生物。