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

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

(1R,4R)-2-Amino-N-[4-(benzyl-isopropyl-amino)-cyclohexyl]-acetamide

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

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

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

(R)-3-[(2-Amino-acetyl)-cyclopropyl-amino]-pyrrolidine-1-carboxylic acid tert-butyl ester

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

4-((S)-2-Amino-propionylamino)-piperidine-1-carboxylic acid tert-butylester

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

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