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

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

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

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

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

{4-[(2-Amino-ethyl)-ethyl-amino]-cyclohexyl}-carbamic acid benzyl ester

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

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

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

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

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