Method for producing (R) -3- [4- (trifluoromethyl) phenylamino] -pentanoic acid amide derivative
申请人:KANEKA CORPORATION
公开号:US20040199005A1
公开(公告)日:2004-10-07
The present invention provides a method for easily producing an (R)-3-[4-(trifluoromethyl)phenylamino]-pentanoic acid amide derivative useful for an intermediate for pharmaceutical products, particularly an inhibitor of a cholesteryl ester transfer protein (CETP) from easily available raw materials.
In the present invention, (S)-N-[4-(trifluoromethyl)phenyl]-3-hydroxypentanoic acid amide prepared from easily available raw materials leads a production of (R)-4-ethyl-1-[4-(trifluoromethyl)phenyl]-2-azetidinone to give (R)-3-[4-(trifluoromethyl)phenylamino]-pentanoic acid amide. Furthermore, (R)-4-ethyl-1-[4-(trifluoromethyl)phenyl]-2-azetidinone is reacted with a carbamic acid ester to give an (R)-3-[4-(trifluoromethyl)phenylamino]-pentanoic acid amide derivative.
本发明提供了一种从易获得的原料中轻松生产(R)-3-[4-(三氟甲基)苯基氨基]-戊酸酰胺衍生物的方法,该衍生物可用作制药产品中间体,特别是一种胆固醇酯转移蛋白(CETP)抑制剂的中间体。在本发明中,从易获得的原料制备的(S)-N-[4-(三氟甲基)苯基]-3-羟基戊酸酰胺导致(R)-4-乙基-1-[4-(三氟甲基)苯基]-2-氮杂环己酮的生产,从而得到(R)-3-[4-(三氟甲基)苯基氨基]-戊酸酰胺。此外,(R)-4-乙基-1-[4-(三氟甲基)苯基]-2-氮杂环己酮与一种碳酸酯反应,形成(R)-3-[4-(三氟甲基)苯基氨基]-戊酸酰胺衍生物。