![4-keto-N-(3-oxazol-5-ylphenyl)-3H-pyrido[2,3-d]pyrimidine-6-carboxamide](http://zinc12.docking.org/img/rings/434549.gif)
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![4-keto-N-(3-phenyl-1H-pyrazol-5-yl)-3H-pyrido[2,3-d]pyrimidine-6-carboxamide](http://zinc12.docking.org/img/rings/388335.gif)
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![4-keto-N-(4-pyrazol-1-ylphenyl)-3H-pyrido[2,3-d]pyrimidine-6-carboxamide](http://zinc12.docking.org/img/rings/325326.gif)
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![4-keto-N-[3-(1H-pyrazol-5-yl)phenyl]-3H-pyrido[2,3-d]pyrimidine-6-carboxamide](http://zinc12.docking.org/img/rings/258109.gif)
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![N-(4-imidazol-1-ylphenyl)-4-keto-3H-pyrido[2,3-d]pyrimidine-6-carboxamide](http://zinc12.docking.org/img/rings/436108.gif)
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![4-keto-3H-pyrido[2,3-d]pyrimidine-6-carboxylic Acid [4-(cyclopropylmethoxy)phenyl] Ester](http://zinc12.docking.org/img/rings/345134.gif)
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![6-(2-phenylmorpholine-4-carbonyl)-3H-pyrido[2,3-d]pyrimidin-4-one](http://zinc12.docking.org/img/rings/329185.gif)
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![6-(4-phenylpiperazine-1-carbonyl)-3H-pyrido[2,3-d]pyrimidin-4-one](http://zinc12.docking.org/img/rings/262935.gif)
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![N-[cyclopentyl(2,3-dihydrothiophen-2-yl)methyl]-4-keto-3H-pyrido[2,3-d]pyrimidine-6-carboxamide](http://zinc12.docking.org/img/rings/360618.gif)
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![6-(2-benzylpyrrolidine-1-carbonyl)-3H-pyrido[2,3-d]pyrimidin-4-one](http://zinc12.docking.org/img/rings/421754.gif)
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![4-keto-N-[1-(1,2,4-oxadiazol-3-yl)cycloheptyl]-3H-pyrido[2,3-d]pyrimidine-6-carboxamide](http://zinc12.docking.org/img/rings/439562.gif)
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![N-[6-(cyclopropanecarbonylamino)-3-pyridyl]-4-keto-3H-pyrido[2,3-d]pyrimidine-6-carboxamide](http://zinc12.docking.org/img/rings/361838.gif)
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![4-keto-N,N-bis(2-thenyl)-3H-pyrido[2,3-d]pyrimidine-6-carboxamide](http://zinc12.docking.org/img/rings/65392.gif)
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![4-keto-N-(2-piperidino-3-pyridyl)-3H-pyrido[2,3-d]pyrimidine-6-carboxamide](http://zinc12.docking.org/img/rings/439466.gif)
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![4-keto-N-[(1-phenylpyrazol-3-yl)methyl]-3H-pyrido[2,3-d]pyrimidine-6-carboxamide](http://zinc12.docking.org/img/rings/430612.gif)
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![4-keto-N-[2-(pyrazol-1-ylmethyl)phenyl]-3H-pyrido[2,3-d]pyrimidine-6-carboxamide](http://zinc12.docking.org/img/rings/65991.gif)
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![4-keto-N-[3-(2-ketopyrrolidino)phenyl]-3H-pyrido[2,3-d]pyrimidine-6-carboxamide](http://zinc12.docking.org/img/rings/435253.gif)
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![4-keto-N-[3-(pyrazol-1-ylmethyl)phenyl]-3H-pyrido[2,3-d]pyrimidine-6-carboxamide](http://zinc12.docking.org/img/rings/290037.gif)
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![6-[4-[2-(2-thienyl)ethyl]piperazine-1-carbonyl]-3H-pyrido[2,3-d]pyrimidin-4-one](http://zinc12.docking.org/img/rings/434034.gif)
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![N-(2-benzylpyrazol-3-yl)-4-keto-3H-pyrido[2,3-d]pyrimidine-6-carboxamide](http://zinc12.docking.org/img/rings/319312.gif)
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![N-(2-furfuryl)-4-keto-N-(2-thenyl)-3H-pyrido[2,3-d]pyrimidine-6-carboxamide](http://zinc12.docking.org/img/rings/252595.gif)
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![N-[4-(imidazol-1-ylmethyl)phenyl]-4-keto-3H-pyrido[2,3-d]pyrimidine-6-carboxamide](http://zinc12.docking.org/img/rings/305106.gif)
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![N-[[2-(cyclopropylmethoxy)-4-pyridyl]methyl]-4-keto-3H-pyrido[2,3-d]pyrimidine-6-carboxamide](http://zinc12.docking.org/img/rings/515823.gif)
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![4-keto-N-(2-piperidinophenyl)-3H-pyrido[2,3-d]pyrimidine-6-carboxamide](http://zinc12.docking.org/img/rings/39428.gif)
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![4-keto-N-[2-(pyrrolidinomethyl)phenyl]-3H-pyrido[2,3-d]pyrimidine-6-carboxamide](http://zinc12.docking.org/img/rings/70027.gif)
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![4-keto-N-[phenyl(tetrahydrofuryl)methyl]-3H-pyrido[2,3-d]pyrimidine-6-carboxamide](http://zinc12.docking.org/img/rings/437753.gif)
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![N-[2-(cyclopentylthio)phenyl]-4-keto-3H-pyrido[2,3-d]pyrimidine-6-carboxamide](http://zinc12.docking.org/img/rings/65268.gif)
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![2-(phenethylamino)-5-(3-pyridyl)-3H-pyrido[2,3-d]pyrimidin-4-one](http://zinc12.docking.org/img/rings/585682.gif)
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![2-(phenethylamino)-5-(4-pyridyl)-3H-pyrido[2,3-d]pyrimidin-4-one](http://zinc12.docking.org/img/rings/583276.gif)
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![4-keto-N-[(1-phenylcyclopentyl)methyl]-3H-pyrido[2,3-d]pyrimidine-6-carboxamide](http://zinc12.docking.org/img/rings/413741.gif)
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![6-(3-benzylpiperidine-1-carbonyl)-3H-pyrido[2,3-d]pyrimidin-4-one](http://zinc12.docking.org/img/rings/350065.gif)
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![2-(phenethylamino)-5-phenyl-3H-pyrido[2,3-d]pyrimidin-4-one](http://zinc12.docking.org/img/rings/583518.gif)
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![4-keto-N-[4-(2-pyrimidyloxy)phenyl]-3H-pyrido[2,3-d]pyrimidine-6-carboxamide](http://zinc12.docking.org/img/rings/440777.gif)
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![4-keto-N-(4-morpholinobenzyl)-3H-pyrido[2,3-d]pyrimidine-6-carboxamide](http://zinc12.docking.org/img/rings/440552.gif)
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![4-keto-N-(6-phenoxy-3-pyridyl)-3H-pyrido[2,3-d]pyrimidine-6-carboxamide](http://zinc12.docking.org/img/rings/244346.gif)
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![4-keto-N-[(2-piperidino-3-pyridyl)methyl]-3H-pyrido[2,3-d]pyrimidine-6-carboxamide](http://zinc12.docking.org/img/rings/254734.gif)
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![4-keto-N',N'-diphenyl-3H-pyrido[2,3-d]pyrimidine-6-carbohydrazide](http://zinc12.docking.org/img/rings/43481.gif)
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![4-keto-N-(2-phenoxyphenyl)-3H-pyrido[2,3-d]pyrimidine-6-carboxamide](http://zinc12.docking.org/img/rings/439410.gif)
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![4-keto-N-(4-phenoxyphenyl)-3H-pyrido[2,3-d]pyrimidine-6-carboxamide](http://zinc12.docking.org/img/rings/256975.gif)
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![4-keto-N-[(4-phenyltetrahydropyran-4-yl)methyl]-3H-pyrido[2,3-d]pyrimidine-6-carboxamide](http://zinc12.docking.org/img/rings/414060.gif)
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![4-keto-N-[4-(piperidinomethyl)phenyl]-3H-pyrido[2,3-d]pyrimidine-6-carboxamide](http://zinc12.docking.org/img/rings/97909.gif)
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![6-[4-(azepan-1-ylmethyl)piperidine-1-carbonyl]-3H-pyrido[2,3-d]pyrimidin-4-one](http://zinc12.docking.org/img/rings/353060.gif)
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![6-[4-(phenoxymethyl)piperidine-1-carbonyl]-3H-pyrido[2,3-d]pyrimidin-4-one](http://zinc12.docking.org/img/rings/411650.gif)
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![N-benzyl-4-keto-N-(tetrahydrofurfuryl)-3H-pyrido[2,3-d]pyrimidine-6-carboxamide](http://zinc12.docking.org/img/rings/15053.gif)
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![N-benzyl-N-(2-furfuryl)-4-keto-3H-pyrido[2,3-d]pyrimidine-6-carboxamide](http://zinc12.docking.org/img/rings/57208.gif)
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![N-[[1-(cyclohexylmethyl)pyrrolidin-2-yl]methyl]-4-keto-3H-pyrido[2,3-d]pyrimidine-6-carboxamide](http://zinc12.docking.org/img/rings/515126.gif)
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![4-keto-N-[(1-phenylcyclohexyl)methyl]-3H-pyrido[2,3-d]pyrimidine-6-carboxamide](http://zinc12.docking.org/img/rings/414413.gif)
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![3-[3-(4-phenylphenoxy)propyl]pyrido[2,3-d]pyrimidin-4-one](http://zinc12.docking.org/img/rings/109148.gif)
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![2-[(3-benzyl-4-keto-pyrido[2,3-d]pyrimidin-2-yl)thio]-N-(1H-pyrazol-5-yl)acetamide](http://zinc12.docking.org/img/rings/567905.gif)
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![2-cyclopentyl-N-[1-(4-keto-3H-pyrido[2,3-d]pyrimidine-6-carbonyl)-4-piperidyl]acetamide](http://zinc12.docking.org/img/rings/360779.gif)
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