tert-Butyl [1-(4-quinazolinyl)-4-piperidinyl]methylcarbamate

tert-Butyl 1-pyrazolidinecarboxylate

tert-Butyl 2-(3-thienyl)-1-pyrrolidinecarboxylate

tert-Butyl 2-hydroxy-2-(4-pyridinyl)ethylcarbamate

tert-Butyl 3-[(2-pyrimidinyloxy)methyl]-1-pyrrolidinecarboxylate

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

tert-Butyl 3-(2-pyrimidinyloxy)-1-azetidinecarboxylate

tert-Butyl 3-(5,6,7,8-tetrahydroimidazo[1,2-a]pyrazin-3-yl)propanoate

tert-Butyl 3-(neopentylamino)propanoate

tert-Butyl 4-[(2E)-3-(dimethylamino)-2-propenoyl]-1-piperidinecarboxylate

tert-Butyl 4-[4-(4-cyanobenzoyl)-1-piperazinyl]-1-piperidinecarboxylate

tert-Butyl 4-(2-hydroxy-3-methoxypropyl)-1-piperazinecarboxylate

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

tert-Butyl 4-aminospiro[chroman-2,4′-piperidine]-1′-carboxylate

tert-Butyl 5-chloro-3,4-dihydro[2,6]naphthyridine-2(1H)-carboxylate