(S)-tert-Butyl 1-isobutylpyrrolidin-3-ylcarbamate

(R)-tert-Butyl 1-(cyclohexylmethyl)pyrrolidin-3-ylcarbamate

(R)-tert-Butyl 1-(2-fluorobenzyl)pyrrolidin-3-ylcarbamate

(S)-tert-Butyl 1-(cyclopropanecarbonyl)pyrrolidin-3-ylcarbamate

(R)-tert-Butyl 1-(cyclopropanecarbonyl)pyrrolidin-3-ylcarbamate

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

1-(Piperidin-4-yl)piperidin-2-one hydrochloride

tert-Butyl 1-picolinoylpiperidin-4-ylcarbamate

(4-Aminopiperidin-1-yl)(2-nitrophenyl)methanone hydrochloride

(4-Aminopiperidin-1-yl)(3-nitrophenyl)methanone hydrochloride

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