PROCESS FOR PREPARING OPTICALLY ACTIVE SECONDARY ALCOHOLS HAVING NITROGENOUS OR OXYGENIC FUNCTIONAL GROUPS
申请人:Asahi Kasei Kabushiki Kaisha
公开号:EP1254885A1
公开(公告)日:2002-11-06
The present invention provides a process for the preparation of an optically active secondary alcohol represented by the general formula (3):
wherein R1 represents a straight-chain lower alkyl group, an aromatic ring group, or the like; A represents CH2NR2R3, or the like; n is an integer of from 0 to 2; and * represents an asymmetric carbon atom, which comprises asymmetrically hydrogenating with selectivity among the functional groups, a ketone compound represented by the general formula (1) having a nitrogenous or oxygenic functional group at any of the α-, β- and γ-positions:
wherein R1, A and n are as defined above, using a ruthenium/optically active bidentate phosphine/diamine complex as a catalyst in the presence of hydrogen or in the presence of hydrogen and a base.
The optically active secondary alcohols obtained by the present process are useful as medicaments and intermediates for producing medicaments.
本发明提供了一种由通式(3)表示的光学活性仲醇的制备方法:
其中 R1 代表直链低级烷基、芳香环基或类似基团;A 代表 CH2NR2R3 或类似基团;n 是 0 至 2 的整数;以及 * 代表不对称碳原子,其包括以官能团之间的选择性不对称氢化通式 (1) 所代表的酮化合物,该酮化合物在 α-、β- 和 γ- 位置上具有含氮或含氧官能团:
其中 R1、A 和 n 如上定义,使用钌/光学活性双齿膦/二胺络合物作为催化剂,在氢气存在下或在氢气和碱存在下进行。
通过本工艺获得的光学活性仲醇可用作药物和生产药物的中间体。