![4-(2,3,3a,4,5,6,7,7a-octahydroindol-1-yl)-5,6,7,8-tetrahydropyrido[4,3-d]pyrimidine](http://zinc12.docking.org/img/rings/412296.gif)
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![4-indolin-1-yl-5,6,7,8-tetrahydropyrido[4,3-d]pyrimidine](http://zinc12.docking.org/img/rings/426686.gif)
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![6-(1H-pyrazolo[3,4-b]pyridin-5-ylmethyl)-7,8-dihydro-5H-pyrido[4,3-d]pyrimidine](http://zinc12.docking.org/img/rings/295861.gif)
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![4-(1,3,4,5,7,8,9,9a-octahydropyrrolo[1,2-a][1,4]diazepin-2-yl)-5,6,7,8-tetrahydropyrido[4,3-d]pyrimidine](http://zinc12.docking.org/img/rings/423242.gif)
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![4-(1,3,4,6,7,8,9,9a-octahydropyrido[1,2-a]pyrazin-2-yl)-5,6,7,8-tetrahydropyrido[4,3-d]pyrimidine](http://zinc12.docking.org/img/rings/425552.gif)
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![4-(3,4-dihydro-1H-isoquinolin-2-yl)-5,6,7,8-tetrahydropyrido[4,3-d]pyrimidine](http://zinc12.docking.org/img/rings/426789.gif)
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![7-(7,8-dihydro-5H-pyrido[4,3-d]pyrimidin-6-ylmethyl)thiazolo[3,2-a]pyrimidin-5-one](http://zinc12.docking.org/img/rings/419408.gif)
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![1,3-benzothiazol-2-ylmethyl(5,6,7,8-tetrahydropyrido[4,3-d]pyrimidin-4-yl)amine](http://zinc12.docking.org/img/rings/397346.gif)
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![4-(5,6,7,8-tetrahydropyrido[4,3-d]pyrimidin-4-yl)-1,2,3,5-tetrahydro-1,4-benzodiazepine](http://zinc12.docking.org/img/rings/410506.gif)
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![4-(8-quinolyloxy)-5,6,7,8-tetrahydropyrido[4,3-d]pyrimidine](http://zinc12.docking.org/img/rings/409902.gif)
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![4-(7,8-dihydro-5H-pyrido[4,3-d]pyrimidin-6-ylsulfonyl)piazthiole](http://zinc12.docking.org/img/rings/382067.gif)
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![5,6,7,8-tetrahydropyrido[4,3-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/404376.gif)
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![2-(7,8-dihydro-5H-pyrido[4,3-d]pyrimidin-6-ylmethyl)pyrido[1,2-a]pyrimidin-4-one](http://zinc12.docking.org/img/rings/440252.gif)
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![2-(7,8-dihydro-5H-pyrido[4,3-d]pyrimidin-6-yl)-1-(2H-indol-3-yl)ethanone](http://zinc12.docking.org/img/rings/359639.gif)
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![5-[2-(7,8-dihydro-5H-pyrido[4,3-d]pyrimidin-6-yl)acetyl]benzimidazol-2-one](http://zinc12.docking.org/img/rings/359644.gif)
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![6-(8-quinolylsulfonyl)-7,8-dihydro-5H-pyrido[4,3-d]pyrimidine](http://zinc12.docking.org/img/rings/382066.gif)
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![4-[4-(cyclopropylmethyl)piperazino]-5,6,7,8-tetrahydropyrido[4,3-d]pyrimidine](http://zinc12.docking.org/img/rings/404408.gif)
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![4-[3-(4H-1,2,4-triazol-3-yl)piperidino]-5,6,7,8-tetrahydropyrido[4,3-d]pyrimidine](http://zinc12.docking.org/img/rings/435728.gif)
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![4-[4-(1,2,4-triazol-1-yl)piperidino]-5,6,7,8-tetrahydropyrido[4,3-d]pyrimidine](http://zinc12.docking.org/img/rings/426787.gif)
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![5-(7,8-dihydro-5H-pyrido[4,3-d]pyrimidin-6-ylmethyl)-3-(3-thienyl)-1,2,4-oxadiazole](http://zinc12.docking.org/img/rings/423635.gif)
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![5-[1-(5,6,7,8-tetrahydropyrido[4,3-d]pyrimidin-4-yl)-3-piperidyl]-1,2,4-oxadiazole](http://zinc12.docking.org/img/rings/429290.gif)
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![3-(7,8-dihydro-5H-pyrido[4,3-d]pyrimidin-6-ylmethyl)-5-(2-thienyl)isoxazole](http://zinc12.docking.org/img/rings/439392.gif)
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![4-(7,8-dihydro-5H-pyrido[4,3-d]pyrimidin-6-ylmethyl)-2-(2-thienyl)oxazole](http://zinc12.docking.org/img/rings/410872.gif)
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![4-(4-pyrrol-1-ylpiperidino)-5,6,7,8-tetrahydropyrido[4,3-d]pyrimidine](http://zinc12.docking.org/img/rings/410510.gif)
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![4-[2-(2-pyridyl)pyrrolidino]-5,6,7,8-tetrahydropyrido[4,3-d]pyrimidine](http://zinc12.docking.org/img/rings/412610.gif)
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![4-(3-phenylpyrrolidino)-5,6,7,8-tetrahydropyrido[4,3-d]pyrimidine](http://zinc12.docking.org/img/rings/413577.gif)
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![Cyclopropyl-(2-phenyl-7,8-dihydro-5H-pyrido[4,3-d]pyrimidin-6-yl)methanone](http://zinc12.docking.org/img/rings/367657.gif)
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![4-[6-(1H-tetrazol-5-ylmethyl)-7,8-dihydro-5H-pyrido[4,3-d]pyrimidin-4-yl]morpholine](http://zinc12.docking.org/img/rings/423555.gif)
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![4-[6-(1,2,4-oxadiazol-3-ylmethyl)-7,8-dihydro-5H-pyrido[4,3-d]pyrimidin-4-yl]morpholine](http://zinc12.docking.org/img/rings/410415.gif)
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![4-[6-(1,2,4-oxadiazol-5-ylmethyl)-7,8-dihydro-5H-pyrido[4,3-d]pyrimidin-4-yl]morpholine](http://zinc12.docking.org/img/rings/410406.gif)
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![4-[6-(1,3,4-oxadiazol-2-ylmethyl)-7,8-dihydro-5H-pyrido[4,3-d]pyrimidin-4-yl]morpholine](http://zinc12.docking.org/img/rings/413581.gif)
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![2-[4-(5,6,7,8-tetrahydropyrido[4,3-d]pyrimidin-4-yl)-1,4-diazepan-1-yl]thiazole](http://zinc12.docking.org/img/rings/413595.gif)
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![2-[4-(5,6,7,8-tetrahydropyrido[4,3-d]pyrimidin-4-yloxy)phenyl]-1,3,4-oxadiazole](http://zinc12.docking.org/img/rings/426682.gif)
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![4-[6-(4-pyrimidyl)-7,8-dihydro-5H-pyrido[4,3-d]pyrimidin-4-yl]morpholine](http://zinc12.docking.org/img/rings/413557.gif)
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![4-[6-(isoxazol-3-ylmethyl)-7,8-dihydro-5H-pyrido[4,3-d]pyrimidin-4-yl]morpholine](http://zinc12.docking.org/img/rings/413599.gif)
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![4-[6-(isoxazol-4-ylmethyl)-7,8-dihydro-5H-pyrido[4,3-d]pyrimidin-4-yl]morpholine](http://zinc12.docking.org/img/rings/413945.gif)
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![4-[6-(isoxazol-5-ylmethyl)-7,8-dihydro-5H-pyrido[4,3-d]pyrimidin-4-yl]morpholine](http://zinc12.docking.org/img/rings/410482.gif)
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![4-[[4-(5,6,7,8-tetrahydropyrido[4,3-d]pyrimidin-4-yl)piperazino]methyl]thiazole](http://zinc12.docking.org/img/rings/413455.gif)
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![6-[(1-phenyltetrazol-5-yl)methyl]-7,8-dihydro-5H-pyrido[4,3-d]pyrimidine](http://zinc12.docking.org/img/rings/426795.gif)
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![[5-(2-furyl)isoxazol-3-yl]methyl-(5,6,7,8-tetrahydropyrido[4,3-d]pyrimidin-4-yl)amine](http://zinc12.docking.org/img/rings/410514.gif)
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![4-[4-(2-pyridyl)piperazino]-5,6,7,8-tetrahydropyrido[4,3-d]pyrimidine](http://zinc12.docking.org/img/rings/397749.gif)
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![4-[4-(2-thenyl)piperazino]-5,6,7,8-tetrahydropyrido[4,3-d]pyrimidine](http://zinc12.docking.org/img/rings/421727.gif)
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![4-[6-(2-pyridyl)-7,8-dihydro-5H-pyrido[4,3-d]pyrimidin-4-yl]morpholine](http://zinc12.docking.org/img/rings/410311.gif)
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![5-(7,8-dihydro-5H-pyrido[4,3-d]pyrimidin-6-ylmethyl)-3-phenyl-1,2,4-oxadiazole](http://zinc12.docking.org/img/rings/423640.gif)
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![6-[(2-phenyltriazol-4-yl)methyl]-7,8-dihydro-5H-pyrido[4,3-d]pyrimidine](http://zinc12.docking.org/img/rings/287631.gif)
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![N-[1-(5,6,7,8-tetrahydropyrido[4,3-d]pyrimidin-4-yl)-4-piperidyl]cyclopropanecarboxamide](http://zinc12.docking.org/img/rings/414241.gif)
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![2-phenyl-4-(5,6,7,8-tetrahydropyrido[4,3-d]pyrimidin-4-yl)morpholine](http://zinc12.docking.org/img/rings/397332.gif)
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![4-(7,8-dihydro-5H-pyrido[4,3-d]pyrimidin-6-ylmethyl)-2-phenyl-oxazole](http://zinc12.docking.org/img/rings/409806.gif)
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![6-benzyl-2-pyrrolidino-7,8-dihydro-5H-pyrido[4,3-d]pyrimidine](http://zinc12.docking.org/img/rings/172720.gif)
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![4-[6-(2-pyrazol-1-ylethyl)-7,8-dihydro-5H-pyrido[4,3-d]pyrimidin-4-yl]morpholine](http://zinc12.docking.org/img/rings/424024.gif)
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