1-[4-(4-cyano-4-phenylpiperidin-1-yl)butyl]-7-methyl-6,7-dihydropyrrolo[2,3-c]-azepine-4,8(1H,5H)-dione
1-{4-[4-(4-fluoro-benzoyl)-piperidin-1-yl]-butyl}-7-methyl-6,7-dihydro-1H,5H-pyrrolo[2,3-c]azepine-4,8-dione 4-(O-methyl-oxime)
1-(4-chloro-butyl)-7-methyl-6,7-dihydro-1H,5H-pyrrolo[2,3-c]azepine-4,8-dione 4-(O-benzyl-oxime)