A process for producing optically active amino alcohol

摘要

A method for producing an optically active amino alcohol compound of the formula Ä3Ü, an enantiomer thereof or a salt thereof, comprising reacting a mesoepoxide compound of the formula Ä1Ü with a compound of the formula Ä2Ü in the presence of a mixed catalyst comprising a Lewis acid and a proton donor: wherein R<1>, R<2> and R<3> are each H, an optionally substituted lower alkyl, and the like, or R<1> and R<1> or R<2> and R<3> may form an optionally substituted ring; and R<4> and R<5> are each H, an optionally substituted lower alkyl, and the like, or R<4> and R<5> may form an optionally substituted ring together with the adjacent N, or an imide group or azide group together with the adjacent N, and R<6> is H or a silyl group. The present invention enables stereoselective production of a desired intermediate compound, which is an HIV protease inhibitor, extremely efficiently as compared to conventional methods. The method of the present invention is a very useful method which can be used not only for the production of said intermediate compound but also for the production of various other compounds.