(R)-3-(Carboxymethyl-cyclopropyl-amino)-pyrrolidine-1-carboxylic acid tert-butyl ester

2-{[(2-Chloro-acetyl)-cyclopropyl-amino]-methyl}-pyrrolidine-1-carboxylic acid tert-butyl ester

4-{[(2-Chloro-acetyl)-cyclopropyl-amino]-methyl}-piperidine-1-carboxylic acid tert-butyl este

(S)-3-(2-Chloro-acetylamino)-pyrrolidine-1-carboxylic acid benzyl ester

(R)-3-(2-Chloro-acetylamino)-pyrrolidine-1-carboxylic acid benzyl ester

2-[(2-Chloro-acetylamino)-methyl]-piperidine-1-carboxylic acid benzyl ester

(1R,4R)-[4-(2-Chloro-acetylamino)-cyclohexyl]-carbamic acid benzyl ester

(R)-3-[(2-Chloro-acetyl)-methyl-amino]-piperidine-1-carboxylic acid benzyl ester

(R)-3-[(2-Chloro-acetyl)-ethyl-amino]-pyrrolidine-1-carboxylic acid benzyl ester

(S)-3-[(2-Chloro-acetyl)-ethyl-amino]-pyrrolidine-1-carboxylic acid benzyl ester

2-[(2-Chloro-acetyl)-ethyl-amino]-cyclohexyl}-carbamic acid benzyl ester