4-ethyl-2-(methylthio)pyrimidine-5-carboxylic acid

8-methyl-2-(methylthio)-6-(1,3,5-trimethyl-1H-pyrazol-4-yl)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

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

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

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

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

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

6-(3,5-dimethyl-1H-pyrazol-4-yl)-8-methyl-2-(methylthio)pyrido[4,3-d]pyrimidin-5(6H)-one

6-(2-fluoro-6-methylphenyl)-8-methyl-2-(methylthio)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

8-methyl-2-(methylthio)-6-(2-(oxazol-5-yl)phenyl)pyrido[4,3-d]pyrimidin-5(6H)-one

methyl 4-chloro-3-(8-methyl-2-(methylthio)-5-oxopyrido[4,3-d]pyrimidin-6(5H)-yl)benzoate

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

6-(2,6-dimethylphenyl)-8-methyl-2-[(2'-methyl-2',3'-dihydro-1'H-spiro[cyclopropane-1,4'-isoquinolin]-7'-yl)amino]pyrido[4,3-d]pyrimidin-5(6H)-one

6-(2-chloro-6-fluorophenyl)-8-methyl-2-(1,2,3,4-tetrahydroisoquinolin-6-ylamino)pyrido[4,3-d]pyrimidin-5(6H)-one

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

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

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