This invention relates to an improved process for preparing N-formyl-.alpha.- aspartyl phenylalanine. More specifically, it relates to a process for preparing N-formyl-.alpha.-aspartyl phenylalanine by condensating N-formyl aspartic acid anhydride and phenylalanine which comprises effecting the condensation reaction in a water medium while maintaining the pH during the reaction in the range of 7-12 and at a reaction temperature of 50.degree. C. or below.
这项发明涉及一种改进的制备N-甲酰-.alpha.-
天冬氨酸苯丙
氨酸的方法。更具体地说,它涉及一种通过在
水介质中使N-甲酰
天冬氨酸酸酐和苯丙
氨酸发生缩合反应来制备N-甲酰-.alpha.-
天冬氨酸苯丙
氨酸的方法,其在反应过程中保持pH值在7-12范围内,并在50摄氏度或以下的反应温度下进行缩合反应。