[EN] PROCESS FOR PREPARING AN ANTI-HYPERCHOLESTEROLEMIC COMPOUND<br/>[FR] PROCÉDÉ DE PRÉPARATION D'UN COMPOSÉ ANTI-HYPERCHOLESTÉROLÉMIANT
申请人:MERCK & CO INC
公开号:WO2009054887A1
公开(公告)日:2009-04-30
The present invention relates to a process for preparing inhibitors of cholesterol absorption of Formula II: II and the pharmaceutically acceptable salts and esters thereof, employing a metal-catalyzed dynamic kinetic resolution (DKR) asymmetric transfer hydrogenation (ATH) reaction of racemic acyclic ß-ketoamide bearing a-substituted aliphatic side chain (Intermediate A) and subsequent cyclization of the resulting b-hydroxyamide product (Intermediate B), followed by a synthesis involving two consecutive cross-coupling reactions.