[EN] PREPARATION OF QUINAPRIL HYDROCHLORIDE<br/>[FR] PREPARATION D'HYDROCHLORURE DE QUINAPRIL
申请人:WARNER LAMBERT CO
公开号:WO2004087671A1
公开(公告)日:2004-10-14
Methods and materials for preparing quinapril, its pharmaceutically acceptable salts, including quinapril hydrochloride, are disclosed. The method includes reacting (2S,4S)-2-(4-methyl-2,5-dioxo-oxazolidin-3-yl)-4-phenyl-butyric acid ethyl ester with (3S)-1,2,3,4-tetrahydro-isoquinoline-3-carboxylic acid tert-butyl ester toyield quinapril tert-butyl ester, which is subsequently reacted with an acid to yield quinapril or an acid addition salt of quinapril.