(R)-tert-Butyl 1-cyclopentylpyrrolidin-3-ylcarbamate

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

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

tert-Butyl 1-(3,3-dimethyl-2-oxobutyl)piperidin-4-ylcarbamate

1-(2,4,6-Trifluorobenzyl)piperidin-4-amine dihydrochloride

1-[3-Fluoro-4-(trifluoromethyl)benzyl]piperidin-4-amine dihydrochloride

tert-Butyl 1-(2-fluoro-5-methoxybenzyl)piperidin-4-ylcarbamate

tert-Butyl 1-[3-fluoro-5-(trifluoromethyl)benzyl]piperidin-4-ylcarbamate

1-(2-Chlorobenzyl)piperidin-4-amine dihydrochloride

tert-Butyl 1-[2-(methylamino)-2-oxoethyl]piperidin-4-ylcarbamate

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