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6-Bromo-8-ethyl-4-methyl-2-(methylthio)pyrido[2,3-d]pyrimidin-7(8h)-one

2-Amino-6-bromo-8-ethyl-4-methylpyrido[2,3-d]pyrimidin-7(8h)-one

6-Bromo-4-methyl-8-(1-methylethyl)-2-(methylthio)pyrido[2,3-d]pyrimidin-7(8h)-one

Ethyl 4-(ethylamino)-6-methyl-2-(methylthio)pyrimidine-5-carboxylate

8-Isopropyl-4-methyl-2-(methylsulfonyl)pyrido[2,3-d]pyrimidin-7(8h)-one

2-Amino-8-ethyl-4-methyl-7-oxo-7,8-dihydropyrido[2,3-d]pyrimidine-6-carbonitrile

N4-benzyl-5-iodo-6-methylpyrimidine-2,4-diamine

2-Amino-4-methyl-8-(phenylmethyl)pyrido[2,3-d]pyrimidin-7(8h)-one

2-Amino-8-ethyl-6-ethynyl-4-methylpyrido[2,3-d]pyrimidin-7(8h)-one

6-Bromo-8-isopropyl-4-methyl-2-(methylsulfonyl)pyrido[2,3-d]pyrimidin-7(8h)-one