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

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

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

2-Amino-N-[4-(benzyl-isopropyl-amino)-cyclohexyl]-acetamide

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

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

(S)-2-Amino-1-[4-(benzyl-cyclopropyl-amino)-piperidin-1-yl]-3-methyl-butan-1-one

{2-[(2-Amino-acetyl)-isopropyl-amino]-cyclohexyl}-carbamic acid tert-butyl ester

4-[(2-Amino-acetyl)-cyclopropyl-amino]-piperidine-1-carboxylic acid tert-butyl ester

(S)-3-((S)-2-Amino-propionylamino)-piperidine-1-carboxylic acid tert-butyl ester

3-[((S)-2-Amino-propionyl)-methyl-amino]-pyrrolidine-1-carboxylic acid tert-butyl ester