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

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

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

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

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

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

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

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

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

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

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