A process for easily producing an optically active β-amino alcohol useful as a pharmaceutical intermediate from an inexpensive, readily available starting material is provided. A readily available α-substituted ketone is reacted with an optically active amine to yield a diastereomer mixture of an optically active α-substituted aminoketone. One of the diastereomers is isolated optionally after the diastereomers are converted to salts with an acid. The optically active α-substituted aminoketone or a salt thereof thus isolated was stereoselectively reduced to yield an optically active β-substituted amino alcohol. The optically active β-substituted amino alcohol is subjected to hydrogenolysis to produce an optically active β-amino alcohol or a salt thereof.
提供了一种从廉价、易得的起始材料中轻松生产有用于制药中间体的光学活性β-
氨基醇的方法。将易得的α-取代酮与光学活性胺反应,得到光学活性α-取代
氨基酮的对映体混合物。在对映体混合物与酸转化为盐之后,可以选择性地分离其中一种对映体。分离出的光学活性α-取代
氨基酮或其盐经立体选择性还原,得到光学活性β-取代
氨基醇。将光学活性β-取代
氨基醇进行氢解反应,得到光学活性β-
氨基醇或其盐。