1-(5-Benzoyl-4-ethyl-pyrimidin-2-ylamino)-3-methyl-pyrrole-2,5-dione

6-(2,6-dichlorophenyl)-8-methyl-2-(methylamino)pyrido[4,3-d]pyrimidin-5(6H)-one

6-(2-chloro-6-fluorophenyl)-8-methyl-2-(methylthio)pyrido[4,3-d]pyrimidin-5(6H)-one

6-(2,6-dichlorophenyl)-8-methyl-2-{[4-(1-methylpiperidin-4-yl)phenyl]amino}pyrido[4,3-d]pyrimidin-5(6H)-one