![3-cyclopropylspiro[1H-quinazoline-2,4'-piperidine]-4-one](http://zinc12.docking.org/img/rings/348858.gif)
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![1'-(cyclopropanecarbonyl)spiro[1,3-dihydroquinazoline-2,4'-piperidine]-4-one](http://zinc12.docking.org/img/rings/431065.gif)
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![1'-cyclopentylspiro[1,3-dihydroquinazoline-2,4'-piperidine]-4-one](http://zinc12.docking.org/img/rings/451426.gif)
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![1'-(2-pyridyl)spiro[1,3-dihydroquinazoline-2,4'-piperidine]-4-one](http://zinc12.docking.org/img/rings/273187.gif)
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![3-(2-furfuryl)spiro[1H-quinazoline-2,4'-piperidine]-4-one](http://zinc12.docking.org/img/rings/348916.gif)
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![3-(tetrahydrofurfuryl)spiro[1H-quinazoline-2,4'-piperidine]-4-one](http://zinc12.docking.org/img/rings/348936.gif)
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![1'-cyclohexylspiro[1,3-dihydroquinazoline-2,4'-piperidine]-4-one](http://zinc12.docking.org/img/rings/349109.gif)
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![1'-phenylspiro[1,3-dihydroquinazoline-2,4'-piperidine]-4-one](http://zinc12.docking.org/img/rings/348800.gif)
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![3-phenylspiro[1H-quinazoline-2,4'-piperidine]-4-one](http://zinc12.docking.org/img/rings/124336.gif)
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![1'-(2-furoyl)spiro[1,3-dihydroquinazoline-2,4'-piperidine]-4-one](http://zinc12.docking.org/img/rings/348822.gif)
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![1'-(3-furoyl)spiro[1,3-dihydroquinazoline-2,4'-piperidine]-4-one](http://zinc12.docking.org/img/rings/273184.gif)
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![1'-(2-pyridylmethyl)spiro[1,3-dihydroquinazoline-2,4'-piperidine]-4-one](http://zinc12.docking.org/img/rings/273180.gif)
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![1'-(4-pyridylmethyl)spiro[1,3-dihydroquinazoline-2,4'-piperidine]-4-one](http://zinc12.docking.org/img/rings/348824.gif)
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![1'-benzylspiro[1,3-dihydroquinazoline-2,4'-piperidine]-4-one](http://zinc12.docking.org/img/rings/265526.gif)
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![3-benzylspiro[1H-quinazoline-2,4'-piperidine]-4-one](http://zinc12.docking.org/img/rings/585639.gif)
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![1'-pyrazinoylspiro[1,3-dihydroquinazoline-2,4'-piperidine]-4-one](http://zinc12.docking.org/img/rings/172773.gif)
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![1'-benzoylspiro[1,3-dihydroquinazoline-2,4'-piperidine]-4-one](http://zinc12.docking.org/img/rings/487341.gif)
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![1'-phenethylspiro[1,3-dihydroquinazoline-2,4'-piperidine]-4-one](http://zinc12.docking.org/img/rings/273189.gif)
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![4-keto-N-phenyl-spiro[1,3-dihydroquinazoline-2,4'-piperidine]-1'-carboxamide](http://zinc12.docking.org/img/rings/564586.gif)
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![1'-(2-phenylacetyl)spiro[1,3-dihydroquinazoline-2,4'-piperidine]-4-one](http://zinc12.docking.org/img/rings/172724.gif)
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![4-keto-N-phenethyl-spiro[1,3-dihydroquinazoline-2,4'-piperidine]-1'-carboxamide](http://zinc12.docking.org/img/rings/564591.gif)
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![3-(2,3-dihydro-1,4-benzodioxin-6-yl)spiro[1H-quinazoline-2,4'-piperidine]-4-one](http://zinc12.docking.org/img/rings/265517.gif)
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![3-piperonylspiro[1H-quinazoline-2,4'-piperidine]-4-one](http://zinc12.docking.org/img/rings/585659.gif)
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![1'-piperonyloylspiro[1,3-dihydroquinazoline-2,4'-piperidine]-4-one](http://zinc12.docking.org/img/rings/564558.gif)
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![1'-(4,5,6,7-tetrahydrobenzothiophene-3-carbonyl)spiro[1,3-dihydroquinazoline-2,4'-piperidine]-4-one](http://zinc12.docking.org/img/rings/172728.gif)
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![1'-cinchoninoylspiro[1,3-dihydroquinazoline-2,4'-piperidine]-4-one](http://zinc12.docking.org/img/rings/49735.gif)
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![1'-[3-(benzotriazol-1-yl)propanoyl]spiro[1,3-dihydroquinazoline-2,4'-piperidine]-4-one](http://zinc12.docking.org/img/rings/51504.gif)
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![1'-(cyclopropanecarbonyl)-3-cyclopropyl-spiro[1H-quinazoline-2,4'-piperidine]-4-one](http://zinc12.docking.org/img/rings/477462.gif)
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![1'-cyclohexyl-3-cyclopropyl-spiro[1H-quinazoline-2,4'-piperidine]-4-one](http://zinc12.docking.org/img/rings/350109.gif)
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![3-cyclopropyl-1'-phenyl-spiro[1H-quinazoline-2,4'-piperidine]-4-one](http://zinc12.docking.org/img/rings/348857.gif)
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![3-cyclopropyl-1'-(2-furoyl)spiro[1H-quinazoline-2,4'-piperidine]-4-one](http://zinc12.docking.org/img/rings/348864.gif)
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![3-cyclopropyl-1'-(4-pyridylmethyl)spiro[1H-quinazoline-2,4'-piperidine]-4-one](http://zinc12.docking.org/img/rings/348867.gif)
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![1'-benzyl-3-cyclopropyl-spiro[1H-quinazoline-2,4'-piperidine]-4-one](http://zinc12.docking.org/img/rings/265538.gif)
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![1'-(1-phenylcyclopropanecarbonyl)spiro[1,3-dihydroquinazoline-2,4'-piperidine]-4-one](http://zinc12.docking.org/img/rings/172727.gif)
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![1'-benzoyl-3-cyclopropyl-spiro[1H-quinazoline-2,4'-piperidine]-4-one](http://zinc12.docking.org/img/rings/487343.gif)
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![1'-cyclohexyl-3-(2-furfuryl)spiro[1H-quinazoline-2,4'-piperidine]-4-one](http://zinc12.docking.org/img/rings/605725.gif)
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![1'-cyclohexyl-3-(tetrahydrofurfuryl)spiro[1H-quinazoline-2,4'-piperidine]-4-one](http://zinc12.docking.org/img/rings/605752.gif)
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![1'-(2-furoyl)-3-(tetrahydrofurfuryl)spiro[1H-quinazoline-2,4'-piperidine]-4-one](http://zinc12.docking.org/img/rings/348943.gif)
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![3-(2-furfuryl)-1'-(2-furoyl)spiro[1H-quinazoline-2,4'-piperidine]-4-one](http://zinc12.docking.org/img/rings/348913.gif)
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![1'-(2-furoyl)-3-phenyl-spiro[1H-quinazoline-2,4'-piperidine]-4-one](http://zinc12.docking.org/img/rings/348803.gif)
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![1'-(4-pyridylmethyl)-3-(tetrahydrofurfuryl)spiro[1H-quinazoline-2,4'-piperidine]-4-one](http://zinc12.docking.org/img/rings/348933.gif)
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![3-(2-furfuryl)-1'-(4-pyridylmethyl)spiro[1H-quinazoline-2,4'-piperidine]-4-one](http://zinc12.docking.org/img/rings/348918.gif)
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![1'-(1-phenylcyclopentanecarbonyl)spiro[1,3-dihydroquinazoline-2,4'-piperidine]-4-one](http://zinc12.docking.org/img/rings/172723.gif)
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![3-phenyl-1'-(4-pyridylmethyl)spiro[1H-quinazoline-2,4'-piperidine]-4-one](http://zinc12.docking.org/img/rings/348804.gif)
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![1-[2-(4-phenylpiperazino)ethyl]spiro[3H-quinazoline-2,4'-piperidine]-4-one](http://zinc12.docking.org/img/rings/197395.gif)
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