A process is described for the preparation of a precursor alcohol of Cizolirtine, (±)-2-[phenyl(1-methyl-1H-pyrazol-5-yl)methoxy]-N,N-dimethylethanamine and its enantiomers, it comprises the asymmetric reduction of a prochiral ketone in the presence of a chiral ruthenium (II) catalyst system comprising at least a bidentate phosphorous-containing ligand and a diamine ligand to render chiral alcohols. The chiral alcohols are further O-alkylated to render the corresponding pharmaceutically active ethanamines.
该方法描述了制备Cizolirtine的前体醇(±)-2-[苯基(1-甲基-1H-
吡唑-5-基)甲氧基]-N,N-二甲基
乙胺及其对映体的过程,包括在手性
钌(II)催化剂体系的存在下,对一个非手性酮进行不对称还原,该手性
钌(II)催化剂体系包括至少一个双齿
磷含
配体和一个二胺
配体,以产生手性醇。这些手性醇进一步进行O-烷基化反应,生成相应的具有药物活性的乙
胺类化合物。