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

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

[(2-Benzyloxycarbonylamino-cyclohexyl)-methyl-amino]-acetic acid

2-{[(2-Amino-ethyl)-methyl-amino]-methyl}-pyrrolidine-1-carboxylic acid benzyl ester

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

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

(S)-2-Amino-N-((S)-1-benzyl-pyrrolidin-3-yl)-N-ethyl-3-methyl-butyramide

(S)-2-Amino-N-((R)-1-benzyl-piperidin-3-yl)-N-ethyl-3-methyl-butyramide

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

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

[1-(2-Amino-ethyl)-pyrrolidin-3-ylmethyl]-cyclopropyl-carbamic acid benzyl ester