PROCESS FOR PRODUCING N-PROTECTED AMINO ACID

摘要

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.