申请人:Ajinomoto Co., Ltd.
公开号:EP0719789A1
公开(公告)日:1996-07-03
The object of the present invention is to provide a useful process of producing α-L-aspartyldipeptide amide derivative.
The amino group of a L-aspartic acid β-alkylester is protected with acetoacetate or β-diketone. The resulting compound is converted into a mixed anhydride using an alkyl chloroformate, condensed with amino acid amide derivatives, and then hydrolyzed under acidic conditions to effect deprotection of the amino protective group and conversion of ester moiety into a carboxylic acid, whereby the target α-L-aspartyldipeptide amide derivatives are obtained.
本发明的目的是提供一种生产α-
L-天冬氨酸二肽酰胺衍
生物的有用工艺。
用
乙酰乙酸酯或
β-二酮保护
L-天冬氨酸 β-烷基酯的
氨基。使用
氯甲酸烷基酯将所得化合物转化为混合酸酐,与
氨基酸酰胺衍
生物缩合,然后在酸性条件下
水解,以实现
氨基保护基团的脱保护和酯基转化为
羧酸,从而获得目标 α-L 天冬
氨酰二肽酰胺衍
生物。