Laniquidar → 6,11-dihydro-11-[1-[2-[4-(2-quinolinylmethoxy)phenyl]ethyl]-4-piperidinylidene]-5H-imidazo[2,1-b][3]benzazepine-3-carboxylic acid

関与物質

反応手順

A mixture of compound 6 (37 g) in NaOH (1N, 150 ml), THF (500 ml) and water (500 ml) was stirred at room temperature overnight. The organic solvent was evaporated. The aqueous concentrate was washed with DCM and acidified with HCl (1N, 150 ml). The solvent was evaporated. The residue was stirred in water, filtered off and dried, yielding 32 g (84%) of 6,11-dihydro-11-[1-[2-[4-(2-quinolinylmethoxy)phenyl]ethyl]-4-piperidinylidene]-5H-imidazo[2,1-b][3]benzazepine-3-carboxylic acid (compound 7, mp. 174.2° C.).

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