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

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

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

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

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

(1R,4R)-{4-[(2-Amino-acetyl)-isopropyl-amino]-cyclohexyl}-carbamic acid tert-butyl ester

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

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

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

[2-((S)-2-Amino-propionylamino)-cyclohexyl]-carbamic acid tert-butyl ester

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

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

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

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

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