{4-[(2-Amino-acetyl)-ethyl-amino]-cyclohexyl}-carbamic acid tert-butylester

[1-(2-Chloro-acetyl)-piperidin-2-ylmethyl]-ethyl-carbamic acid tert-butyl ester

[(S)-1-(2-Chloro-acetyl)-piperidin-3-yl]-isopropyl-carbamic acid tert-butyl ester

[(S)-1-(2-Amino-ethyl)-pyrrolidin-3-yl]-cyclopropyl-carbamic acid benzyl ester

[1-(2-Chloro-acetyl)-pyrrolidin-3-yl]-carbamic acid benzyl ester

[1-(2-Amino-ethyl)-piperidin-2-ylmethyl]-cyclopropyl-carbamic acid benzyl ester

2-Amino-1-[(S)-3-(benzyl-cyclopropyl-amino)-piperidin-1-yl]-ethanone

2-Amino-1-{3-[(benzyl-cyclopropyl-amino)-methyl]-piperidin-1-yl}-ethanone

(1R,4R)-(S)-2-Amino-N-[4-(benzyl-isopropyl-amino)-cyclohexyl]-3-methyl-butyramide

(S)-2-Amino-1-[(S)-3-(benzyl-cyclopropyl-amino)-piperidin-1-yl]-3-methyl-butan-1-one

3-{[(2-Amino-acetyl)-isopropyl-amino]-methyl}-pyrrolidine-1-carboxylic acid tert-butyl ester