4-(3,4-dihydro-2,2-dioxo-1H-2,1,3-benzothiadiazin-1-yl)piperidine

1-(3,4-dimethoxybenzoylmethyl)-4-[3,4-dihydro-2(1H)-quinazolinon-1-yl]-piperidine

1-{1-[2-(3,4-Dimethoxy-phenyl)-2-hydroxy-ethyl]-piperidin-4-yl}-3,4-dihydro-1H-quinazolin-2-one

1-<2-oxo-2-(3,4-dimethoxyphenyl)-1-methylethyl>-4-(1,2,3,4-tetrahydro-2-oxo-1-quinazolinyl)piperidine