tert-Butyl [1-(3-chloro-2-pyrazinyl)-4-piperidinyl]methylcarbamate

tert-Butyl 1-(methoxyacetyl)-4-piperidinylcarbamate

tert-Butyl 1,2,4,5-tetrahydro-3H-3-benzazepine-3-carboxylate

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

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

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

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

tert-Butyl 3-[6-(2-methylphenyl)-2-pyridinyl]-1-pyrrolidinecarboxylate

tert-Butyl 3-(2-chlorophenyl)-3-hydroxypiperidine-1-carboxylate

tert-Butyl 3-(4-hydroxyphenyl)-2-phenyl-2,4,5,7-tetrahydro-6H-pyrazolo[3,4-c]pyridine-6-carboxylate

tert-Butyl 3-(aminomethyl)-3-[(tert-butoxycarbonyl)amino]-1-pyrrolidinecarboxylate

tert-Butyl 3-amino-2,6-dihydropyrrolo[3,4-c]pyrazole-5(4H)-carboxylate

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

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

tert-Butyl 4-[5-cyano-2-(ethylamino)-4-pyrimidinyl]-1-piperidinecarboxylate