2-[(Carboxymethyl-methyl-amino)-methyl]-pyrrolidine-1-carboxylic acid tert-butyl ester

(1R,4R)-[(4-tert-Butoxycarbonylamino-cyclohexyl)-methyl-amino]-acetic acid

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

3-(Carboxymethyl-ethyl-amino)-piperidine-1-carboxylic acid tert-butyl ester

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

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

[(4-tert-Butoxycarbonylamino-cyclohexyl)-isopropyl-amino]-acetic acid

3-[(Carboxymethyl-cyclopropyl-amino)-methyl]-pyrrolidine-1-carboxylic acid tert-butyl ester

[(4-tert-Butoxycarbonylamino-cyclohexyl)-cyclopropyl-amino]-acetic acid

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

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

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

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

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

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