[EN] A PROCESS FOR THE PREPARATION OF INTERMEDIATE FOR THE PREPARATION OF OSELTAMIVIR PHOSPHATE<br/>[FR] PROCÉDÉ POUR LA PRÉPARATION D'INTERMÉDIAIRE POUR LA PRÉPARATION DE PHOSPHATE D'OSELTAMIVIR
申请人:COUNCIL SCIENT IND RES
公开号:WO2015049700A1
公开(公告)日:2015-04-09
The present invention discloses an economic, simple, azide and azindine complexity free process for the synthesis of osletamivir phosphate (Tamiflu) by stereospecific amidoalkylation of imidazothiazolone from easily available L-cysteine via Ramberg- Backlund reaction and Sharpless-Reich protocol.