(R)-tert-Butyl 1-(4-fluorobenzoyl)pyrrolidin-3-ylcarbamate

tert-Butyl 1-(2-nitrobenzoyl)piperidin-4-ylcarbamate

tert-Butyl 1-(4-nitrobenzoyl)piperidin-4-ylcarbamate

tert-Butyl 1-(3,4-difluorobenzyl)piperidin-4-ylcarbamate

tert-Butyl 1-(3-fluoro-2-methylbenzyl)piperidin-4-ylcarbamate

tert-Butyl 1-(2,5-difluorobenzyl)piperidin-4-ylcarbamate

tert-Butyl 1-(3-methylbutanoyl)piperidin-4-ylcarbamate

3-[4-(tert-Butoxycarbonylamino)piperidine-1-carbonyl]benzoic acid

2-(4-Aminopiperidin-1-yl)-1-phenylethanone dihydrochloride

tert-Butyl 1-(dimethylcarbamoyl)piperidin-4-ylcarbamate

Methyl 3-[4-(tert-butoxycarbonylamino)piperidin-1-yl]methylbenzoate