An object of the present invention is to provide a simple and easy process for producing optically active alcohols, specifically, a (R)-3-hydroxypentanenitrile, optically active 3-hydroxybutanoic esters, and optically active 1-phenylethanol derivatives, and to provide a novel enzyme useful for producing the above optically active alcohols, particularly a (R)-3-hydroxypentanenitrile.
The present invention provides a novel acetoacetyl-CoA reductase capable of asymmetrically reducing a 3-ketopentanenitrile to produce a (R)-3-hydroxypentanenitrile having an optical purity of 99%e.e. or more; and a process for allowing the novel enzyme or a known acetoacetyl-CoA reductase to act on each of the 3-ketopentanenitrile, an acetoacetic ester, and a 1-phenylethanone derivative to produce a corresponding optically active alcohol.
本发明的目的是提供一种生产光学活性醇,特别是
(R)-3-羟基戊腈、光学活性3-羟基
丁酸酯和光学活性1-
苯乙醇衍
生物的简单易行的工艺,并提供一种用于生产上述光学活性醇,特别是
(R)-3-羟基戊腈的新型酶。
本发明提供了一种新型乙酰乙酰-CoA还原酶,它能够不对称地还原3-酮
戊腈,生成光学纯度为99%e.e.或更高的
(R)-3-羟基戊腈;还提供了一种工艺,使该新型酶或已知的乙酰乙酰-CoA还原酶作用于3-酮
戊腈、
乙酰乙酸酯和1-
苯乙酮衍
生物中的每一种,生成相应的光学活性醇。