申请人:Richter Gedeon Nyrt.
公开号:US08178665B2
公开(公告)日:2012-05-15
A process for the production of 1-(4-3(R)-[3(S)-(4-fluorophenyl)-3-hydroxypropyl]-4(S)-(4-hydroxyphenyl)-2-azetidinone (ezetimibe) according to the following reaction scheme: (I), (II), (III), (IV), (V), (VI), (VII), (VIII), (IX), (X), (XI) where the substances of the general Formulas II, IV, VI, VIII, IX, X and XI are new, Formula III is a non-isolated intermediate, R1, R2 and R3 are represented by the compounds of Formulas Va-Vd, (Va), (Vb), (Vc), (Vd) and R4 is a silyl, e.g., tert-butyl-dimethyl-silyl, tert-butyl-diphenyl-silyl group.
根据以下反应方案(I),(II),(III),(IV),(V),(VI),(VII),(VIII),(IX),(X),(XI)制备1-(4-3(R)-[3(S)-(4-氟苯基)-3-羟基丙基]-4(S)-(4-羟基苯基)-2-氮杂环己酮(依折麦布)。其中,通式II、IV、VI、VIII、IX、X和XI的物质是新的,式III是未分离的中间体,R1、R2和R3由式Va-Vd的化合物表示,(Va)、(Vb)、(Vc)、(Vd),R4是硅基,例如叔丁基二甲基硅基,叔丁基二苯基硅基团。