tert-Butyl 2-(tert-butyl)-4-hydroxy-7,8-dihydropyrido[4,3-d]pyrimidine-6(5H)-carboxylate

tert-Butyl 2,4-dichloro-5,7-dihydro-6H-pyrrolo[3,4-d]pyrimidine-6-carboxylate

tert-Butyl 3-{[(3-chloro-2-pyrazinyl)amino]methyl}-1-piperidinecarboxylate

tert-Butyl 3-[2-(methylamino)phenyl]propanoate

tert-Butyl 3-(1,3-dioxoisoindolin-2-yl)piperidine-1-carboxylate

tert-Butyl 3-(4-fluorobenzyl)-1-piperazinecarboxylate

tert-Butyl 3-(acetylamino)propylcarbamate

tert-Butyl 3-acetylphenylcarbamate

tert-Butyl 3,4-dimethyl-1-piperazinecarboxylate

tert-Butyl 4-{[3-(4-chlorophenyl)-1,2,4-oxadiazol-5-yl]methyl}-1-piperazinecarboxylate

tert-Butyl 4-[5-(1-methyl-1H-imidazol-2-yl)-4-pyrimidinyl]-1-piperidinecarboxylate

tert-Butyl 4-(2-pyridinylcarbonyl)-1-piperazinecarboxylate

tert-Butyl 4-(4-{[(2-hydroxy-1,1-dimethylethyl)amino]carbonyl}-2-oxo-1-pyrrolidinyl)-1-piperidinecarboxylate

tert-Butyl 4-(9H-purin-6-yl)-1-piperazinecarboxylate

tert-Butyl 4-oxo-2-phenyl-3,5,7,8-tetrahydropyrido[4,3-d]pyrimidine-6(4H)-carboxylate