![2-(2-pyridyl)-5,6,7,8-tetrahydro-3H-pyrido[3,4-d]pyrimidin-4-one](http://zinc12.docking.org/img/rings/37215.gif)
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![2-(4-pyridyl)-5,6,7,8-tetrahydro-3H-pyrido[3,4-d]pyrimidin-4-one](http://zinc12.docking.org/img/rings/29104.gif)
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![2-phenyl-5,6,7,8-tetrahydro-3H-pyrido[3,4-d]pyrimidin-4-one](http://zinc12.docking.org/img/rings/594429.gif)
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![7-benzyl-3,5,6,8-tetrahydropyrido[3,4-d]pyrimidin-4-one](http://zinc12.docking.org/img/rings/17139.gif)
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![7-benzoyl-3,5,6,8-tetrahydropyrido[3,4-d]pyrimidin-4-one](http://zinc12.docking.org/img/rings/37245.gif)
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![7-(6-keto-1H-pyridine-3-carbonyl)-3,5,6,8-tetrahydropyrido[3,4-d]pyrimidin-4-one](http://zinc12.docking.org/img/rings/66522.gif)
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![7-besyl-3,5,6,8-tetrahydropyrido[3,4-d]pyrimidin-4-one](http://zinc12.docking.org/img/rings/33344.gif)
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![7-[2-(tetrahydropyran-2-ylmethoxy)acetyl]-3,5,6,8-tetrahydropyrido[3,4-d]pyrimidin-4-one](http://zinc12.docking.org/img/rings/66742.gif)
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![7-(4-phenylbutanoyl)-3,5,6,8-tetrahydropyrido[3,4-d]pyrimidin-4-one](http://zinc12.docking.org/img/rings/33409.gif)
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![7-(2-phenoxyethylsulfonyl)-3,5,6,8-tetrahydropyrido[3,4-d]pyrimidin-4-one](http://zinc12.docking.org/img/rings/29007.gif)
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![3-keto-3-(4-keto-3,5,6,8-tetrahydropyrido[3,4-d]pyrimidin-7-yl)-N-phenyl-propionamide](http://zinc12.docking.org/img/rings/26365.gif)
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![7-(pyrazolo[1,5-a]pyrimidine-5-carbonyl)-3,5,6,8-tetrahydropyrido[3,4-d]pyrimidin-4-one](http://zinc12.docking.org/img/rings/29018.gif)
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![7-(1H-indole-2-carbonyl)-3,5,6,8-tetrahydropyrido[3,4-d]pyrimidin-4-one](http://zinc12.docking.org/img/rings/33397.gif)
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![7-[2-(benzofuran-3-yl)acetyl]-3,5,6,8-tetrahydropyrido[3,4-d]pyrimidin-4-one](http://zinc12.docking.org/img/rings/29287.gif)
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![7-[2-(1-ketoisoindolin-2-yl)acetyl]-3,5,6,8-tetrahydropyrido[3,4-d]pyrimidin-4-one](http://zinc12.docking.org/img/rings/37437.gif)
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![7-[3-(1H-indol-3-yl)propanoyl]-3,5,6,8-tetrahydropyrido[3,4-d]pyrimidin-4-one](http://zinc12.docking.org/img/rings/33311.gif)
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![2-(cyclopropylmethyl)-7-(1,3,4-oxadiazole-2-carbonyl)-3,5,6,8-tetrahydropyrido[3,4-d]pyrimidin-4-one](http://zinc12.docking.org/img/rings/26313.gif)
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![7-(cyclopropanecarbonyl)-2-phenyl-3,5,6,8-tetrahydropyrido[3,4-d]pyrimidin-4-one](http://zinc12.docking.org/img/rings/612170.gif)
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![2-morpholino-7-(4-pyrimidyl)-3,5,6,8-tetrahydropyrido[3,4-d]pyrimidin-4-one](http://zinc12.docking.org/img/rings/172658.gif)
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![2-piperidino-7-(1H-pyrrol-2-ylmethyl)-3,5,6,8-tetrahydropyrido[3,4-d]pyrimidin-4-one](http://zinc12.docking.org/img/rings/172676.gif)
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![7-[4-(2H-tetrazol-5-yl)benzoyl]-3,5,6,8-tetrahydropyrido[3,4-d]pyrimidin-4-one](http://zinc12.docking.org/img/rings/37453.gif)
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![7-(1H-pyrazole-3-carbonyl)-2-(2-pyridyl)-3,5,6,8-tetrahydropyrido[3,4-d]pyrimidin-4-one](http://zinc12.docking.org/img/rings/33604.gif)
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![7-(1H-pyrazole-3-carbonyl)-2-(3-pyridyl)-3,5,6,8-tetrahydropyrido[3,4-d]pyrimidin-4-one](http://zinc12.docking.org/img/rings/37332.gif)
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![2-phenyl-7-(1H-pyrazole-5-carbonyl)-3,5,6,8-tetrahydropyrido[3,4-d]pyrimidin-4-one](http://zinc12.docking.org/img/rings/523829.gif)
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![2-phenyl-7-(thiazole-4-carbonyl)-3,5,6,8-tetrahydropyrido[3,4-d]pyrimidin-4-one](http://zinc12.docking.org/img/rings/25827.gif)
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![7-(2-furoyl)-2-(3-pyridyl)-3,5,6,8-tetrahydropyrido[3,4-d]pyrimidin-4-one](http://zinc12.docking.org/img/rings/25838.gif)
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![7-(3-phenylisoxazole-5-carbonyl)-3,5,6,8-tetrahydropyrido[3,4-d]pyrimidin-4-one](http://zinc12.docking.org/img/rings/29006.gif)
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![7-(3-pyrazol-1-ylbenzoyl)-3,5,6,8-tetrahydropyrido[3,4-d]pyrimidin-4-one](http://zinc12.docking.org/img/rings/37475.gif)
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![7-(2-furoyl)-2-phenyl-3,5,6,8-tetrahydropyrido[3,4-d]pyrimidin-4-one](http://zinc12.docking.org/img/rings/26245.gif)
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![2-(4-pyridyl)-7-(pyrimidine-5-carbonyl)-3,5,6,8-tetrahydropyrido[3,4-d]pyrimidin-4-one](http://zinc12.docking.org/img/rings/37483.gif)
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![7-benzoyl-2-(2-pyridyl)-3,5,6,8-tetrahydropyrido[3,4-d]pyrimidin-4-one](http://zinc12.docking.org/img/rings/33291.gif)
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![7-[2-[4-(tetrazol-1-yl)phenoxy]acetyl]-3,5,6,8-tetrahydropyrido[3,4-d]pyrimidin-4-one](http://zinc12.docking.org/img/rings/66703.gif)
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![7-[3-(5-phenyltetrazol-2-yl)propanoyl]-3,5,6,8-tetrahydropyrido[3,4-d]pyrimidin-4-one](http://zinc12.docking.org/img/rings/37364.gif)
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![7-(2-anilinopyrimidine-5-carbonyl)-3,5,6,8-tetrahydropyrido[3,4-d]pyrimidin-4-one](http://zinc12.docking.org/img/rings/66543.gif)
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![7-(6-keto-4,5-dihydro-1H-pyridazine-3-carbonyl)-2-phenyl-3,5,6,8-tetrahydropyrido[3,4-d]pyrimidin-4-one](http://zinc12.docking.org/img/rings/520804.gif)
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![2-(7-benzyl-4-keto-6,8-dihydro-5H-pyrido[3,4-d]pyrimidin-3-yl)-N-isoxazol-3-yl-acetamide](http://zinc12.docking.org/img/rings/17140.gif)
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![7-hydrocinnamoyl-2-(4-pyridyl)-3,5,6,8-tetrahydropyrido[3,4-d]pyrimidin-4-one](http://zinc12.docking.org/img/rings/66520.gif)
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![2-keto-2-[4-keto-2-(4-pyridyl)-3,5,6,8-tetrahydropyrido[3,4-d]pyrimidin-7-yl]-N-phenyl-acetamide](http://zinc12.docking.org/img/rings/26362.gif)
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![2-(7-benzyl-4-keto-6,8-dihydro-5H-pyrido[3,4-d]pyrimidin-3-yl)-N-(3-phenylpropyl)acetamide](http://zinc12.docking.org/img/rings/17141.gif)
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![7-[2-(5-azabicyclo[2.2.1]heptan-5-yl)acetyl]-2-(3-pyridyl)-3,5,6,8-tetrahydropyrido[3,4-d]pyrimidin-4-one](http://zinc12.docking.org/img/rings/66687.gif)
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![2-piperidino-7-[[1-(tetrahydrofurfuryl)pyrrol-3-yl]methyl]-3,5,6,8-tetrahydropyrido[3,4-d]pyrimidin-4-one](http://zinc12.docking.org/img/rings/172678.gif)
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![7-benzyl-3-[2-keto-2-(4-phenylpiperazino)ethyl]-6,8-dihydro-5H-pyrido[3,4-d]pyrimidin-4-one](http://zinc12.docking.org/img/rings/17143.gif)
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![2-(7-benzyl-4-keto-2-phenyl-6,8-dihydro-5H-pyrido[3,4-d]pyrimidin-3-yl)-N-(2-cyclohexen-1-ylethyl)acetamide](http://zinc12.docking.org/img/rings/17136.gif)
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