申请人:SIRAC SRL
公开号:EP0102483A1
公开(公告)日:1984-03-14
A process for preparing alpha-L-aspartyl-L-phenylalanine alkyl esters from L-aspartic acid of which the amino group is protected by bonding it to a 3,5-dimethoxy-α, α-dimethyl-benzyloxycarbonyl group, then transforming this intermediate into the corresponding anhydride by means of a dehydrating agent, then reacting the anhydride with L-phenylalanine alkyl ester, and finally eliminating the protective group by the action of U.V. radiation.
一种从 L-天冬氨酸制备α-L-天冬氨酰-L-苯丙氨酸烷基酯的工艺,其氨基通过与 3,5-二甲氧基-α,α-二甲基-苄氧羰基键合而受到保护,然后通过脱水剂将该中间体转化为相应的酸酐,再将该酸酐与 L-苯丙氨酸烷基酯反应,最后通过紫外辐射作用消除保护基。