Process for the preparation of optically active 4-oxochroman-2-carboxylic acid derivatives
申请人:SANWA KAGAKU KENKYUSHO CO., LTD.
公开号:EP0488047A1
公开(公告)日:1992-06-03
There is described a process for the preparation of optically active 4-oxochroman-2-carboxylic acid derivatives as intermediates for synthesizing hydantoin compounds which shows strong inhibition to aldose reductases to cure incurable complications of diabetes. According to the process, the derivatives are prepared by fractionally recrystallizing a salt of racemic 4-oxochroman-2-carboxylic acid derivative with an optically active secondary amine or diamine.
本发明描述了一种制备光学活性的4-氧代色基-2-羧酸衍生物的方法,作为合成咪唑烷类化合物的中间体,该化合物对醛糖还原酶表现出强烈的抑制作用,可治疗糖尿病的难以治愈的并发症。根据该方法,通过用光学活性的二元胺或二胺盐对外消旋的4-氧代色基-2-羧酸衍生物进行分馏结晶来制备这些衍生物。