[EN] PROCESS FOR PREPARING AMLODIPINE BENZENESULPHONATE<br/>[FR] PROCEDE DE PREPARATION DE BENZENESULPHONATE D'AMLODIPINE
申请人:RICHTER GEDEON VEGYESZET
公开号:WO2001002360A1
公开(公告)日:2001-01-11
The invention relates to a novel process of amlodipine benzenesulphonate of formula (I) by reacting a new 2-[/2-N-(2-carboxy-benzoyl)-aminoethoxy/methyl/]-4-(2-chlorophenyl)-3-ethoxycarbonyl-5-methyoxycarbonyl-6-methyl-1,4-dihydropyridine derivative of general formula (II) wherein X represents hydrogen or alkali metal or alkali earth metal or quaternary ammonium - with benzenesulphonic acid.