申请人:Holland Sweetener Company V.O.F.
公开号:EP1013663A1
公开(公告)日:2000-06-28
The invention relates to the synthesis of aspartame involving enzymatic deformylation of an N-formyl-α-L-aspartyl-L-phenylalanine compound by treatment with an enzyme having formylmethionyl peptide deformylase activity and having as a co-factor group 5 to 11 bivalent metal ions. The invention also relates to selective preparation and recovery of aspartame from a mixture of N-formyl-α- and β-L-aspartyl-L-phenylalanine compounds by treatment with such enzyme. And finally, the invention relates to one-pot enzymatic synthesis of aspartame from N-formyl-L-aspartic acid and L- or D,L-phenylalanine methyl ester involving an enzymatic deformylation reaction simultaneously with an enzymatic coupling reaction, as well as to one-pot di- or oligopeptide synthesis by simultaneous enzymatic coupling and deformylation reactions in general.
本发明涉及天冬酰胺的合成,包括用具有甲酰基蛋氨酰肽变形酶活性的酶处理 N-甲酰基-α-L-天冬氨酰-L-苯丙氨酸化合物,并用 5 至 11 个二价金属离子作为辅助因子基团,使其酶促变形。本发明还涉及用这种酶处理从 N-甲酰基-α-和 β-L-天冬氨酰-L-苯丙氨酸化合物混合物中选择性制备和回收阿斯巴甜。最后,本发明涉及由 N-甲酰基-L-天冬氨酸和 L-或 D,L-苯丙氨酸甲酯通过酶促脱甲酰反应和酶促偶联反应一次酶法合成天冬酰胺,以及通过同时进行酶促偶联反应和脱甲酰反应一次酶法合成二肽或寡肽。