2-(2-Amino-ethylsulfanylmethyl)-pyrrolidine-1-carboxylic acid benzyl ester

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

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

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

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

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

[4-(2-Chloro-acetylamino)-cyclohexyl]-carbamic acid tert-butyl ester

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

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

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

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