1-[3-(2-Hydroxy-ethoxy)-pyrrolidin-1-yl]-ethanone

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

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

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

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

3-[(Carboxymethyl-methyl-amino)-methyl]-pyrrolidine-1-carboxylic acid benzyl ester

{4-[Cyclopropyl-(2-hydroxy-ethyl)-amino]-cyclohexyl}-carbamic acid benzyl ester

{2-[Cyclopropyl-(2-hydroxy-ethyl)-amino]-cyclohexyl}-carbamic acid benzyl ester

(S)-2-Amino-N-((S)-1-benzyl-piperidin-3-yl)-3,N-dimethyl-butyramide

(S)-2-Amino-N-(1-benzyl-piperidin-4-ylmethyl)-3,N-dimethyl-butyramide

(1R,4R)- [4-(2-Chloro-acetylamino)-cyclohexyl]-ethyl-carbamic acid tert-butyl ester