发明授权
US5283357A Separation method of .alpha.-l-aspartyl-l-phenylalanine methyl ester
失效
α1-天冬氨酰基-1-苯丙氨酸甲酯的分离方法
- 专利标题： Separation method of .alpha.-l-aspartyl-l-phenylalanine methyl ester
- 专利标题（中）： α1-天冬氨酰基-1-苯丙氨酸甲酯的分离方法
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申请号： US688709申请日： 1991-04-23
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公开(公告)号： US5283357A公开(公告)日： 1994-02-01
- 发明人: Toshio Katoh , Chojiro Higuchi , Takeshi Oura , Masanobu Ajioka , Akihiro Yamaguchi
- 申请人： Toshio Katoh , Chojiro Higuchi , Takeshi Oura , Masanobu Ajioka , Akihiro Yamaguchi
- 申请人地址： JPX Tokyo
- 专利权人： Mitsui Toatsu Chemicals, Incorporated
- 当前专利权人： Mitsui Toatsu Chemicals, Incorporated
- 当前专利权人地址： JPX Tokyo
- 优先权： JPX63-058210 19880314; JPX63-135060 19880601; JPX63-143673 19880613; JPX63-156866 19880627
- 主分类号： C07K5/072
- IPC分类号： C07K5/072 ; C07K5/075 ; C07C227/34 ; C07C227/38
摘要：
A method for separating .alpha.-L-aspartyl-L-phenylalanine methyl ester (.alpha.-APM) from a solution containing .alpha.-APM and impurities associated with the production thereof which comprises adding a mineral acid or an organic sulfonic acid to the solution in an organic carboxylic acid or in a solvent containing an organic carboxylic acid, and isolating the pure salt of .alpha.-APM which precipitates therefrom.
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