(1R,4R)-{4-[Ethyl-(2-hydroxy-ethyl)-amino]-cyclohexyl}-carbamic acid benzyl ester

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

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

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

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

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

(S)-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]-methyl}-pyrrolidine-1-carboxylic acid benzyl ester

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

{2-[(2-Amino-ethyl)-isopropyl-amino]-cyclohexyl}-carbamic acid benzyl ester