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 (4a) or a salt thereof, or L-hydroxymethyl-substituted phenylalanine (4b) 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.
本发明提供了一种具有光学活性的羟甲基取代苯丙
氨酸的生产方法,其中包括还原
氰基取代的苯亚甲基海因(1),得到
氨甲基取代的苯亚甲基海因(2)或其盐、将
氨甲基取代的苄基海因(2)或其盐的
氨基转化为羟基,得到羟甲基取代的苄基海因(3),用酶处理羟甲基取代的苄基海因(3),得到 D-羟甲基取代的苯丙
氨酸(4a)或其盐,或 L-羟甲基取代的苯丙
氨酸(4b)或其盐。
根据本发明,可以提供一种能够方便地以工业规模生产光学活性羟甲基取代苯丙
氨酸的生产方法。