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

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

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

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

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

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

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

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

4-[(Carboxymethyl-cyclopropyl-amino)-methyl]-piperidine-1-carboxylic acid tert-butyl ester

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

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

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

(1R,4R)-{4-[(2-Chloro-acetyl)-ethyl-amino]-cyclohexyl}-carbamic acid tert-butyl ester

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

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