The objective of the present invention is to provide an optically active imidazolidinone derivative widely usable for synthesizing an optically active amino acid, a method of easily producing the derivative, and a method of easily producing an optically active amino acid by using the derivative. The objective can be achieved by producing an optically active amino acid using a novel optically active imidazolidinone derivative represented by a general formula (3) and the like. According to the method of the present invention, an optically active imidazolidinone derivative can be obtained by preferential crystallization from a mixture of isomers of the imidazolidinone derivative. Therefore, an optically active amino acid can be easily and stereoselectively produced without cumbersome procedures required for the conventional methods, such as resolution of diastereomers, synthesis from an optically active amino acid and resolution of isomers by silica gel column chromatography.
本发明的目的是提供一种光学活性
咪唑啉酮衍
生物,可广泛用于合成光学活性
氨基酸,以及一种易于生产该衍
生物的方法和利用该衍
生物轻松生产光学活性
氨基酸的方法。通过使用一般式(3)等表示的新型光学活性
咪唑啉酮衍
生物,可以生产出光学活性
氨基酸。根据本发明的方法,可以通过优先结晶从
咪唑啉酮衍
生物的异构体混合物中获得光学活性
咪唑啉酮衍
生物。因此,可以轻松、立体选择性地生产光学活性
氨基酸,无需传统方法所需的繁琐程序,如对映体分离、从光学活性
氨基酸合成和通过
硅胶柱层析分离异构体。