[EN] PROCESS FOR PREPARATION OF BOCEPREVIR AND INTERMEDIATES THEREOF<br/>[FR] PROCÉDÉ DE PRÉPARATION DE BOCEPREVIR ET DE SES INTERMÉDIAIRES
申请人:MSN LAB LTD
公开号:WO2014061034A1
公开(公告)日:2014-04-24
THE PRESENT INVENTION RELATES TO AN IMPROVED PROCESS FOR THE PREPARATION OF (1R,5S)-N-[3-AMINO-1-(CYCLOBUTYLMETHYL)-2,3-DIOXOPROPYL]-3-[2(S)-[[[(1,1-DIMETHYLETHYL)AMINO]CARBONYL] AMINO]-3,3-DIMETHYL-1-OXOBUTYL]-6,6-DIMETHYL-3-AZABICYCLO[3.1.0]HEXAN-2(S)-CARBOXAMIDE AND ITS INTERMEDIATES
the P1 fragment of HCV inhibitor, boceprevir is described. This approach efficiently provides P1 fragment of boceprevir using simple and easy handling reagents suitable for scale up. This synthetic route involves the conversion of ester intermediate into novel intermediate, α-chloro ketone via chloroacetate Claisencondensation, followed by further simple conversions to β-amino-α-hydroxy amide, P1 fragment