4,4-dimethyl-1-<4'-(N-benzyl-4-piperidinoamino)acetylaminophenyl>-1,4-dihydro-3(2H)-isoquinolinone
1-benzyl-4-(1,2,3,4-tetrahydro-2-oxo-3-quinazolinyl)piperidine
1-benzyl-4-(2-oxo-3,4-dihydro-2H-1,3-benzoxazine-3-yl)piperidine
1-benzoylmethyl-4-[3,4-dihydro-2(1H)-quinazolinon-3-yl]-piperidine
1-(3-oxo-3-phenylpropyl)-4-(1,2,3,4-tetrahydro-2-oxo-3-quinazolinyl)piperidine