申请人:Kaneka Corporation
公开号:EP2345733A1
公开(公告)日:2011-07-20
In the present invention, an N-protected amino acid is obtained by producing an amino acid using a biocatalyst such as a microorganism and enzyme; acidizing the reaction mixture containing the amino acid to adjust pH to not more than 4, without isolating the amino acid; and then protecting the amino group under a basic condition. As a result, a high-quality N-protected amino acid can be quantitatively and efficiently produced using a quantitative or slightly excessive protecting agent, even when the amino acid produced using a biocatalyst is directly protected without isolating the amino acid.
在本发明中,通过使用微生物和酶等生物催化剂生产氨基酸;将含有氨基酸的反应混合物酸化以调节 pH 值不超过 4,而不分离氨基酸;然后在碱性条件下保护氨基,即可获得 N-保护氨基酸。因此,即使使用生物催化剂生产的氨基酸是在不分离氨基酸的情况下直接保护的,使用定量或略微过量的保护剂也能定量、高效地生产出高质量的 N-保护氨基酸。