The present invention provides a production method of optically active hydroxymethyl-substituted phenylalanine, which includes reducing cyano-substituted benzylidene hydantoin (1) to give aminomethyl-substituted benzyl hydantoin (2) or a salt thereof, converting an amino group of the aminomethyl-substituted benzyl hydantoin (2) or a salt thereof to a hydroxyl group to give hydroxymethyl-substituted benzyl hydantoin (3), treating the hydroxymethyl-substituted benzyl hydantoin (3) with an enzyme to give D-hydroxymethyl-substituted phenylalanine (4
a
) or a salt thereof, or L-hydroxymethyl-substituted phenylalanine (4
b
) or a salt thereof.
According to the present invention, a production method capable of conveniently producing optically active hydroxymethyl-substituted phenylalanine on an industrial scale can be provided.
本发明提供了一种光学活性的羟甲基取代苯丙
氨酸的生产方法,包括将
氰基取代
苯并咪唑酮(1)还原为
氨基甲基取代
苯并咪唑酮(2)或其盐,将
氨基甲基取代
苯并咪唑酮(2)或其盐的
氨基转化为羟基,得到羟甲基取代
苯并咪唑酮(3),用酶处理羟甲基取代
苯并咪唑酮(3)得到D-羟甲基取代苯丙
氨酸(4a)或其盐,或L-羟甲基取代苯丙
氨酸(4b)或其盐。根据本发明,可以提供一种能够方便地在工业规模下生产光学活性羟甲基取代苯丙
氨酸的生产方法。