![4-keto-N-[2-(piperidine-1-carbonyl)phenyl]-3H-pyrido[2,3-d]pyrimidine-6-carboxamide](http://zinc12.docking.org/img/rings/39311.gif)
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![2-(4-ketopyrido[2,3-d]pyrimidin-3-yl)-N-[2-(phenylthio)phenyl]acetamide](http://zinc12.docking.org/img/rings/189603.gif)
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![4-keto-N-(2-phenoxybenzyl)-3H-pyrido[2,3-d]pyrimidine-6-carboxamide](http://zinc12.docking.org/img/rings/338999.gif)
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![3-(3-benzhydryloxypropyl)pyrido[2,3-d]pyrimidin-4-one](http://zinc12.docking.org/img/rings/190953.gif)
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![2-(4-ketopyrido[2,3-d]pyrimidin-3-yl)-N-(4-phenylazophenyl)acetamide](http://zinc12.docking.org/img/rings/189602.gif)
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![2-[(3-benzyl-4-keto-pyrido[2,3-d]pyrimidin-2-yl)thio]-N-phenyl-acetamide](http://zinc12.docking.org/img/rings/262412.gif)
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![2-(4-ketopyrido[2,3-d]pyrimidin-3-yl)-N-(3-morpholinosulfonylphenyl)acetamide](http://zinc12.docking.org/img/rings/237806.gif)
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![4-keto-N-[5-(3-phenyl-1H-pyrazol-5-yl)pentyl]-3H-pyrido[2,3-d]pyrimidine-6-carboxamide](http://zinc12.docking.org/img/rings/184106.gif)
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![N-[3-(azepan-1-ylsulfonyl)phenyl]-2-(4-ketopyrido[2,3-d]pyrimidin-3-yl)acetamide](http://zinc12.docking.org/img/rings/237618.gif)
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![5-(1,3-benzodioxol-5-yl)-2-piperidino-3H-pyrido[2,3-d]pyrimidin-4-one](http://zinc12.docking.org/img/rings/586706.gif)
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![N-(7-cyclopropyl-7-azabicyclo[3.3.1]nonan-9-yl)-4-keto-3H-pyrido[2,3-d]pyrimidine-6-carboxamide](http://zinc12.docking.org/img/rings/417170.gif)
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![6-[2-(1H-benzimidazol-2-yl)pyrrolidine-1-carbonyl]-3H-pyrido[2,3-d]pyrimidin-4-one](http://zinc12.docking.org/img/rings/217966.gif)
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![5-(2-naphthyl)-2-piperidino-3H-pyrido[2,3-d]pyrimidin-4-one](http://zinc12.docking.org/img/rings/586815.gif)
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![4-keto-N-[3-(1-naphthyl)-1H-1,2,4-triazol-5-yl]-3H-pyrido[2,3-d]pyrimidine-6-carboxamide](http://zinc12.docking.org/img/rings/410892.gif)
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![N-[6-(benzimidazol-1-yl)-3-pyridyl]-4-keto-3H-pyrido[2,3-d]pyrimidine-6-carboxamide](http://zinc12.docking.org/img/rings/458736.gif)
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![4-keto-N-[1-(2-morpholinoethyl)indol-5-yl]-3H-pyrido[2,3-d]pyrimidine-6-carboxamide](http://zinc12.docking.org/img/rings/503762.gif)
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![2-[(5-cyclopropyl-1,2,4-oxadiazol-3-yl)methylthio]-3-(tetrahydrofurfuryl)pyrido[2,3-d]pyrimidin-4-one](http://zinc12.docking.org/img/rings/480842.gif)
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![N-(5-cyclopropyl-2-phenyl-pyrazol-3-yl)-4-keto-3H-pyrido[2,3-d]pyrimidine-6-carboxamide](http://zinc12.docking.org/img/rings/319224.gif)
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![5-(4-phenylphenyl)-2-piperidino-3H-pyrido[2,3-d]pyrimidin-4-one](http://zinc12.docking.org/img/rings/586898.gif)
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![3-[2-keto-2-[5-phenyl-3-(2-thienyl)-2-pyrazolin-1-yl]ethyl]pyrido[2,3-d]pyrimidin-4-one](http://zinc12.docking.org/img/rings/237620.gif)
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![N-[(4-keto-3-phenyl-pyrido[2,3-d]pyrimidin-2-yl)methyl]-2-phenyl-N-(3-pyridylmethyl)acetamide](http://zinc12.docking.org/img/rings/446212.gif)
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