申请人:Laboratorios Del Dr. Esteve, S.A.
公开号:US06118009A1
公开(公告)日:2000-09-12
The procedure comprises (a) the enantioselective reduction of a pro-chiral ketone (III) by using a reducing and agent and chiral catalyst, both boron derivatives, in an anhydrous solvent or mixture of anhydrous solvents to form an enantiomer of an alcohol (II), and (b), the alkylation of (II), in phase transfer conditions, with optionally prior isolation and purification thereof, with 2-chloro-N,N-dimethylethylamine, to form an enantiomer of (I). Cyzolirtine exhibits analgesic properties.
该过程包括(a)使用还原剂和手性催化剂(均为硼衍生物)在无水溶剂或无水溶剂混合物中对原始手性酮(III)进行对映选择性还原,形成对映异构体醇(II),以及(b)在相转移条件下,使用2-氯-N,N-二甲基乙基胺对(II)进行烷基化,可选择性地预先分离和纯化,形成(I)的对映异构体。Cyzolirtine具有镇痛特性。