![2-(thiadiazol-4-yl)-2,3-dihydro-1H-pyrido[2,3-d]pyrimidin-4-one](http://zinc12.docking.org/img/rings/432029.gif)
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![2-(1H-pyrazol-4-yl)-2,3-dihydro-1H-pyrido[2,3-d]pyrimidin-4-one](http://zinc12.docking.org/img/rings/333896.gif)
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![2-thiazol-4-yl-2,3-dihydro-1H-pyrido[2,3-d]pyrimidin-4-one](http://zinc12.docking.org/img/rings/381753.gif)
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![2-(2-furyl)-2,3-dihydro-1H-pyrido[2,3-d]pyrimidin-4-one](http://zinc12.docking.org/img/rings/355984.gif)
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![2-(3-thienyl)-2,3-dihydro-1H-pyrido[2,3-d]pyrimidin-4-one](http://zinc12.docking.org/img/rings/352185.gif)
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![2-phenyl-2,3-dihydro-1H-pyrido[2,3-d]pyrimidin-4-one](http://zinc12.docking.org/img/rings/298764.gif)
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![2-coumaran-5-yl-2,3-dihydro-1H-pyrido[2,3-d]pyrimidin-4-one](http://zinc12.docking.org/img/rings/333775.gif)
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![2-(3,4-dihydro-2H-1,5-benzodioxepin-6-yl)-2,3-dihydro-1H-pyrido[2,3-d]pyrimidin-4-one](http://zinc12.docking.org/img/rings/364675.gif)
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![2-(2-phenylthiazol-5-yl)-2,3-dihydro-1H-pyrido[2,3-d]pyrimidin-4-one](http://zinc12.docking.org/img/rings/349138.gif)
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![2-(4-phenylthiazol-2-yl)-2,3-dihydro-1H-pyrido[2,3-d]pyrimidin-4-one](http://zinc12.docking.org/img/rings/349136.gif)
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![2-(2-morpholinopyrimidin-5-yl)-2,3-dihydro-1H-pyrido[2,3-d]pyrimidin-4-one](http://zinc12.docking.org/img/rings/432050.gif)
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![2-(3-benzoxyphenyl)-2,3-dihydro-1H-pyrido[2,3-d]pyrimidin-4-one](http://zinc12.docking.org/img/rings/394981.gif)
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![2-[3-(phenoxymethyl)phenyl]-3-(3-pyridylmethyl)-1,2-dihydropyrido[2,3-d]pyrimidin-4-one](http://zinc12.docking.org/img/rings/484774.gif)
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