Novel thioamide derivatives containing a pyridazine group

摘要

Novel pyridazine-containing thioamide derivatives of the formula <IMAGE> wherein R1 is <IMAGE> wherein A is hydrogen, methyl, phenyl or mercapto, and B is hydrogen or phenyl; R2 is hydrogen or methyl; R3 is hydrogen, methyl or phenyl; R4 is hydrogen or methyl; and n is zero or 1. The derivatives have outstanding gastric antisecretory activity.