![7-piperonyl-6,8-dihydro-5H-pyrido[3,4-d]pyrimidine](http://zinc12.docking.org/img/rings/432135.gif)
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![7-quinazolin-4-yl-6,8-dihydro-5H-pyrido[3,4-d]pyrimidine](http://zinc12.docking.org/img/rings/374640.gif)
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![7-quinoxalin-2-yl-6,8-dihydro-5H-pyrido[3,4-d]pyrimidine](http://zinc12.docking.org/img/rings/411268.gif)
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![4-(3,4-dihydro-1H-isoquinolin-2-yl)-5,6,7,8-tetrahydropyrido[3,4-d]pyrimidine](http://zinc12.docking.org/img/rings/601801.gif)
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![7-(indolizin-2-ylmethyl)-6,8-dihydro-5H-pyrido[3,4-d]pyrimidine](http://zinc12.docking.org/img/rings/341544.gif)
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![7-(6,8-dihydro-5H-pyrido[3,4-d]pyrimidin-7-ylmethyl)-[1,3,4]thiadiazolo[3,2-a]pyrimidin-5-one](http://zinc12.docking.org/img/rings/364844.gif)
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![2-(6,8-dihydro-5H-pyrido[3,4-d]pyrimidin-7-ylmethyl)-3H-thieno[2,3-d]pyrimidin-4-one](http://zinc12.docking.org/img/rings/375233.gif)
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![7-(6,8-dihydro-5H-pyrido[3,4-d]pyrimidin-7-ylmethyl)thiazolo[3,2-a]pyrimidin-5-one](http://zinc12.docking.org/img/rings/504238.gif)
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![7-(2,3-dihydro-1,4-benzodioxin-7-ylmethyl)-6,8-dihydro-5H-pyrido[3,4-d]pyrimidine](http://zinc12.docking.org/img/rings/355693.gif)
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![7-(2,3-dihydro-1,4-benzodioxin-8-ylmethyl)-6,8-dihydro-5H-pyrido[3,4-d]pyrimidine](http://zinc12.docking.org/img/rings/352257.gif)
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![7-(quinazolin-2-ylmethyl)-6,8-dihydro-5H-pyrido[3,4-d]pyrimidine](http://zinc12.docking.org/img/rings/351403.gif)
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![7-(quinoxalin-2-ylmethyl)-6,8-dihydro-5H-pyrido[3,4-d]pyrimidine](http://zinc12.docking.org/img/rings/350924.gif)
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![Coumaran-5-ylmethyl(5,6,7,8-tetrahydropyrido[3,4-d]pyrimidin-4-yl)amine](http://zinc12.docking.org/img/rings/584307.gif)
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![7-(2-quinolylmethyl)-6,8-dihydro-5H-pyrido[3,4-d]pyrimidine](http://zinc12.docking.org/img/rings/352242.gif)
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![7-(8-quinolylmethyl)-6,8-dihydro-5H-pyrido[3,4-d]pyrimidine](http://zinc12.docking.org/img/rings/352281.gif)
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![Indan-5-ylmethyl(5,6,7,8-tetrahydropyrido[3,4-d]pyrimidin-4-yl)amine](http://zinc12.docking.org/img/rings/29264.gif)
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![7-(1-naphthylmethyl)-6,8-dihydro-5H-pyrido[3,4-d]pyrimidine](http://zinc12.docking.org/img/rings/485142.gif)
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![5,6,7,8-tetrahydropyrido[3,4-d]pyrimidin-4-yl(6,7,8,9-tetrahydro-5H-[1,2,4]triazolo[4,3-a]azepin-3-ylmethyl)amine](http://zinc12.docking.org/img/rings/599294.gif)
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![7-(benzothiophen-2-ylsulfonyl)-6,8-dihydro-5H-pyrido[3,4-d]pyrimidine](http://zinc12.docking.org/img/rings/29222.gif)
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![2,3-dihydro-1,4-benzodioxin-6-ylmethyl(5,6,7,8-tetrahydropyrido[3,4-d]pyrimidin-4-yl)amine](http://zinc12.docking.org/img/rings/594843.gif)
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![2-(6,8-dihydro-5H-pyrido[3,4-d]pyrimidin-7-yl)-1-(6,7-dihydro-4H-thieno[3,2-c]pyridin-5-yl)ethanone](http://zinc12.docking.org/img/rings/354241.gif)
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![2-(6,8-dihydro-5H-pyrido[3,4-d]pyrimidin-7-ylmethyl)-3H-quinazolin-4-one](http://zinc12.docking.org/img/rings/377924.gif)
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![2-(6,8-dihydro-5H-pyrido[3,4-d]pyrimidin-7-ylmethyl)pyrido[1,2-a]pyrimidin-4-one](http://zinc12.docking.org/img/rings/353932.gif)
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![N-(5,6-dihydro-4H-cyclopenta[b]thiophen-2-yl)-2-(6,8-dihydro-5H-pyrido[3,4-d]pyrimidin-7-yl)acetamide](http://zinc12.docking.org/img/rings/433316.gif)
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![2-(1H-indol-3-yl)ethyl-(5,6,7,8-tetrahydropyrido[3,4-d]pyrimidin-4-yl)amine](http://zinc12.docking.org/img/rings/579563.gif)
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![2-(4,5,6,7-tetrahydrobenzothiophen-3-yl)ethyl-(5,6,7,8-tetrahydropyrido[3,4-d]pyrimidin-4-yl)amine](http://zinc12.docking.org/img/rings/611666.gif)
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![2-(6,8-dihydro-5H-pyrido[3,4-d]pyrimidin-7-yl)-1-indolin-1-yl-ethanone](http://zinc12.docking.org/img/rings/352694.gif)
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![2-[3-(6,8-dihydro-5H-pyrido[3,4-d]pyrimidin-7-yl)propyl]-1,3-benzoxazole](http://zinc12.docking.org/img/rings/353662.gif)
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![5-(5,6,7,8-tetrahydropyrido[3,4-d]pyrimidin-4-yl)-2,3,4,6-tetrahydro-1,5-benzoxazocine](http://zinc12.docking.org/img/rings/564496.gif)
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![7-(3,4-dihydro-2H-1,5-benzodioxepin-7-ylmethyl)-6,8-dihydro-5H-pyrido[3,4-d]pyrimidine](http://zinc12.docking.org/img/rings/355741.gif)
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![2-naphthylmethyl(5,6,7,8-tetrahydropyrido[3,4-d]pyrimidin-4-yl)amine](http://zinc12.docking.org/img/rings/602622.gif)
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![3-(6,8-dihydro-5H-pyrido[3,4-d]pyrimidin-7-ylmethyl)-4H-benzo[e][1,2,4]thiadiazine 1,1-dioxide](http://zinc12.docking.org/img/rings/353934.gif)
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![N-(1,3-benzothiazol-2-yl)-2-(6,8-dihydro-5H-pyrido[3,4-d]pyrimidin-7-yl)acetamide](http://zinc12.docking.org/img/rings/374557.gif)
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![1-(2,3,4a,5,6,7,8,8a-octahydrobenzo[b][1,4]oxazin-4-yl)-2-(6,8-dihydro-5H-pyrido[3,4-d]pyrimidin-7-yl)ethanone](http://zinc12.docking.org/img/rings/354436.gif)
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![2-[2-(6,8-dihydro-5H-pyrido[3,4-d]pyrimidin-7-yl)ethyl]-3H-quinazolin-4-one](http://zinc12.docking.org/img/rings/369118.gif)
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![3-(6,8-dihydro-5H-pyrido[3,4-d]pyrimidin-7-yl)-1-(6,7-dihydro-4H-thieno[3,2-c]pyridin-5-yl)propan-1-one](http://zinc12.docking.org/img/rings/364744.gif)
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![3-[(5,6,7,8-tetrahydropyrido[3,4-d]pyrimidin-4-ylamino)methyl]carbostyril](http://zinc12.docking.org/img/rings/33576.gif)
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![3-[2-(6,8-dihydro-5H-pyrido[3,4-d]pyrimidin-7-yl)-2-keto-ethyl]oxindole](http://zinc12.docking.org/img/rings/33562.gif)
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![3-[3-(6,8-dihydro-5H-pyrido[3,4-d]pyrimidin-7-yl)propyl]-1,3-benzoxazol-2-one](http://zinc12.docking.org/img/rings/350926.gif)
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![7-[3-(1,3-benzodioxol-5-yloxy)propyl]-6,8-dihydro-5H-pyrido[3,4-d]pyrimidine](http://zinc12.docking.org/img/rings/354222.gif)
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![1-(3,4,4a,5,6,7,8,8a-octahydro-2H-quinolin-1-yl)-2-(6,8-dihydro-5H-pyrido[3,4-d]pyrimidin-7-yl)ethanone](http://zinc12.docking.org/img/rings/355684.gif)
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![1-(3,4-dihydro-1H-isoquinolin-2-yl)-2-(6,8-dihydro-5H-pyrido[3,4-d]pyrimidin-7-yl)ethanone](http://zinc12.docking.org/img/rings/354204.gif)
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![2-(6,8-dihydro-5H-pyrido[3,4-d]pyrimidin-7-yl)-1-(3,4-dihydro-2H-quinolin-1-yl)ethanone](http://zinc12.docking.org/img/rings/341543.gif)
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![3-(6,8-dihydro-5H-pyrido[3,4-d]pyrimidin-7-yl)-1-indolin-1-yl-propan-1-one](http://zinc12.docking.org/img/rings/350939.gif)
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![7-[2-(2-naphthoxy)ethyl]-6,8-dihydro-5H-pyrido[3,4-d]pyrimidine](http://zinc12.docking.org/img/rings/355526.gif)
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![2-(6,8-dihydro-5H-pyrido[3,4-d]pyrimidin-7-yl)-N-piperonyl-acetamide](http://zinc12.docking.org/img/rings/376615.gif)
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![4-[2-(6,8-dihydro-5H-pyrido[3,4-d]pyrimidin-7-yl)acetyl]-1,3-dihydroquinoxalin-2-one](http://zinc12.docking.org/img/rings/355691.gif)
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![2-(8-quinolyloxy)ethyl-(5,6,7,8-tetrahydropyrido[3,4-d]pyrimidin-4-yl)amine](http://zinc12.docking.org/img/rings/565569.gif)
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![N-chroman-4-yl-2-(6,8-dihydro-5H-pyrido[3,4-d]pyrimidin-7-yl)acetamide](http://zinc12.docking.org/img/rings/407606.gif)
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![2-(6,8-dihydro-5H-pyrido[3,4-d]pyrimidin-7-yl)-N-tetralin-1-yl-acetamide](http://zinc12.docking.org/img/rings/351434.gif)
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