(4-Benzyloxycarbonylamino-cyclohexylamino)-acetic acid

(1R,4R)-(4-Benzyloxycarbonylamino-cyclohexylamino)-acetic acid

(S)-3-(Carboxymethyl-ethyl-amino)-piperidine-1-carboxylic acid benzyl ester

(R)-3-(Carboxymethyl-isopropyl-amino)-pyrrolidine-1-carboxylic acid benzyl ester

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

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

(R)-3-[(2-Hydroxy-ethyl)-methyl-amino]-piperidine-1-carboxylic acid benzyl ester

3-{[(2-Hydroxy-ethyl)-methyl-amino]-methyl}-piperidine-1-carboxylic acid benzyl ester

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

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

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

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

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

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

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