[(2-tert-Butoxycarbonylamino-cyclohexyl)-ethyl-amino]-acetic acid

3-[(Carboxymethyl-isopropyl-amino)-methyl]-piperidine-1-carboxylic acid tert-butyl ester

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

3-(2-Chloro-acetylamino)-pyrrolidine-1-carboxylic acid tert-butyl ester

3-(2-Chloro-acetylamino)-piperidine-1-carboxylic acid tert-butyl ester

4-(2-Chloro-acetylamino)-piperidine-1-carboxylic acid tert-butyl ester

3-{[(2-Chloro-acetyl)-methyl-amino]-methyl}-pyrrolidine-1-carboxylic acid tert-butyl ester

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

4-[(2-Chloro-acetyl)-ethyl-amino]-piperidine-1-carboxylic acid tert-butyl ester

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

{2-[(2-Chloro-acetyl)-isopropyl-amino]-cyclohexyl}-carbamic acid tert-butyl ester

3-{[(2-Chloro-acetyl)-cyclopropyl-amino]-methyl}-pyrrolidine-1-carboxylic acid tert-butyl ester

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

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

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