![5-[(4-ketopyrido[1,2-a]pyrimidin-2-yl)methylamino]uracil](http://zinc12.docking.org/img/rings/95400.gif)
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![2-[[(1,1-diketothian-3-yl)amino]methyl]pyrido[1,2-a]pyrimidin-4-one](http://zinc12.docking.org/img/rings/290119.gif)
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![4-keto-N'-phenyl-pyrido[1,2-a]pyrimidine-3-carbohydrazide](http://zinc12.docking.org/img/rings/408791.gif)
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![4-keto-N-(2-pyridylmethyl)pyrido[1,2-a]pyrimidine-3-carboxamide](http://zinc12.docking.org/img/rings/402311.gif)
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![4-keto-N-(3-piperidylmethyl)pyrido[1,2-a]pyrimidine-3-carboxamide](http://zinc12.docking.org/img/rings/344308.gif)
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![4-keto-N-(3-pyridylmethyl)pyrido[1,2-a]pyrimidine-3-carboxamide](http://zinc12.docking.org/img/rings/402344.gif)
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![4-keto-N-(4-piperidylmethyl)pyrido[1,2-a]pyrimidine-3-carboxamide](http://zinc12.docking.org/img/rings/505170.gif)
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![4-keto-N-(4-pyridylmethyl)pyrido[1,2-a]pyrimidine-3-carboxamide](http://zinc12.docking.org/img/rings/402325.gif)
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![4-keto-N-[2-(2-thienyl)ethyl]pyrido[1,2-a]pyrimidine-3-carboxamide](http://zinc12.docking.org/img/rings/397779.gif)
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![Nicotin (4-ketopyrido[1,2-a]pyrimidin-2-yl)methyl Ester](http://zinc12.docking.org/img/rings/561302.gif)
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![2-(2-phenoxyethylamino)pyrido[1,2-a]pyrimidin-4-one](http://zinc12.docking.org/img/rings/238374.gif)
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![2-(benzylsulfinylmethyl)pyrido[1,2-a]pyrimidin-4-one](http://zinc12.docking.org/img/rings/416080.gif)
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![2-[(3-pyrrolidinopropylamino)methyl]pyrido[1,2-a]pyrimidin-4-one](http://zinc12.docking.org/img/rings/190435.gif)
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![2-[(benzalamino)oxymethyl]pyrido[1,2-a]pyrimidin-4-one](http://zinc12.docking.org/img/rings/109268.gif)
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![3-(azocane-1-carbonyl)pyrido[1,2-a]pyrimidin-4-one](http://zinc12.docking.org/img/rings/402177.gif)
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![4-ketopyrido[1,2-a]pyrimidine-3-carboxylic Acid Benzyl Ester](http://zinc12.docking.org/img/rings/376710.gif)
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![Benzoic Acid (4-ketopyrido[1,2-a]pyrimidin-2-yl)methyl Ester](http://zinc12.docking.org/img/rings/5531.gif)
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![N-(cyclohexylmethyl)-4-keto-pyrido[1,2-a]pyrimidine-3-carboxamide](http://zinc12.docking.org/img/rings/418913.gif)
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![N-benzyl-4-keto-pyrido[1,2-a]pyrimidine-2-carboxamide](http://zinc12.docking.org/img/rings/369508.gif)
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![2-[(phenethylamino)methyl]pyrido[1,2-a]pyrimidin-4-one](http://zinc12.docking.org/img/rings/163190.gif)
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![2-(2-keto-4-thiazolin-3-yl)acetic Acid (4-ketopyrido[1,2-a]pyrimidin-2-yl)methyl Ester](http://zinc12.docking.org/img/rings/44497.gif)
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![2-(2-pyrazol-1-ylethylsulfonylmethyl)pyrido[1,2-a]pyrimidin-4-one](http://zinc12.docking.org/img/rings/583326.gif)
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![4-keto-N-[3-(1,2,4-oxadiazol-5-yl)propyl]pyrido[1,2-a]pyrimidine-3-carboxamide](http://zinc12.docking.org/img/rings/337923.gif)
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![6-keto-1H-pyridazine-3-carboxylic Acid (4-ketopyrido[1,2-a]pyrimidin-2-yl)methyl Ester](http://zinc12.docking.org/img/rings/214280.gif)
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![N'-(3-furoyl)-4-keto-pyrido[1,2-a]pyrimidine-3-carbohydrazide](http://zinc12.docking.org/img/rings/219561.gif)
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![1-ketonicotin (4-ketopyrido[1,2-a]pyrimidin-2-yl)methyl Ester](http://zinc12.docking.org/img/rings/614933.gif)
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![2-[[(2-keto-2-morpholino-ethyl)amino]methyl]pyrido[1,2-a]pyrimidin-4-one](http://zinc12.docking.org/img/rings/491425.gif)
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![3-(1H-pyrazol-4-yl)acrylic Acid (4-ketopyrido[1,2-a]pyrimidin-2-yl)methyl Ester](http://zinc12.docking.org/img/rings/64054.gif)
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![4-keto-N-(2-morpholinoethyl)pyrido[1,2-a]pyrimidine-3-carboxamide](http://zinc12.docking.org/img/rings/402805.gif)
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![4-keto-N-(3-pyrazol-1-ylpropyl)pyrido[1,2-a]pyrimidine-3-carboxamide](http://zinc12.docking.org/img/rings/356536.gif)
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![N-[2-(cyclopropanecarbonylamino)ethyl]-4-keto-pyrido[1,2-a]pyrimidine-3-carboxamide](http://zinc12.docking.org/img/rings/397765.gif)
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![2-(benzylsulfonylmethyl)pyrido[1,2-a]pyrimidin-4-one](http://zinc12.docking.org/img/rings/233617.gif)
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![2-[(3-keto-3-piperidino-propyl)amino]pyrido[1,2-a]pyrimidin-4-one](http://zinc12.docking.org/img/rings/231478.gif)
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![2-[(4-ketopyrido[1,2-a]pyrimidin-2-yl)amino]-N-phenyl-acetamide](http://zinc12.docking.org/img/rings/86082.gif)
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![3-(3-thienyl)acrylic Acid (4-ketopyrido[1,2-a]pyrimidin-2-yl)methyl Ester](http://zinc12.docking.org/img/rings/250114.gif)
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![N-benzoxy-4-keto-pyrido[1,2-a]pyrimidine-3-carboxamide](http://zinc12.docking.org/img/rings/408301.gif)
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![N-cyclohexyl-2-[(4-ketopyrido[1,2-a]pyrimidin-2-yl)amino]acetamide](http://zinc12.docking.org/img/rings/189525.gif)
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![N-[3-(cyclopropylmethoxy)propyl]-4-keto-pyrido[1,2-a]pyrimidine-3-carboxamide](http://zinc12.docking.org/img/rings/407521.gif)
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![2-(3-anilinopropylamino)pyrido[1,2-a]pyrimidin-4-one](http://zinc12.docking.org/img/rings/156444.gif)
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![2-(3-phenoxypropylamino)pyrido[1,2-a]pyrimidin-4-one](http://zinc12.docking.org/img/rings/247905.gif)
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![2-(phenethylsulfinylmethyl)pyrido[1,2-a]pyrimidin-4-one](http://zinc12.docking.org/img/rings/372198.gif)
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![2-phenylacetic Acid (4-ketopyrido[1,2-a]pyrimidin-2-yl)methyl Ester](http://zinc12.docking.org/img/rings/44222.gif)
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