4-(Carboxymethyl-ethyl-amino)-piperidine-1-carboxylic acid benzyl ester

(1R,4R)-[(4-Benzyloxycarbonylamino-cyclohexyl)-cyclopropyl-amino]-acetic acid

2-{[(2-Hydroxy-ethyl)-methyl-amino]-methyl}-piperidine-1-carboxylic acid benzyl ester

3-{[Ethyl-(2-hydroxy-ethyl)-amino]-methyl}-pyrrolidine-1-carboxylic acid benzyl ester

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

4-[(2-Hydroxy-ethyl)-isopropyl-amino]-piperidine-1-carboxylic acid benzyl ester

3-[Cyclopropyl-(2-hydroxy-ethyl)-amino]-piperidine-1-carboxylic acid benzyl ester

2-{[(2-Amino-ethyl)-ethyl-amino]-methyl}-pyrrolidine-1-carboxylic acid benzyl ester

(S)-3-[(2-Amino-ethyl)-ethyl-amino]-piperidine-1-carboxylic acid benzyl ester

3-[(2-Amino-ethyl)-isopropyl-amino]-piperidine-1-carboxylic acid benzyl ester

(S)-2-{[(2-Amino-ethyl)-cyclopropyl-amino]-methyl}-pyrrolidine-1-carboxylic acid benzyl ester