(S)-2-Amino-N-(1-benzyl-piperidin-3-yl)-N-cyclopropyl-propionamide

[(1-Acetyl-pyrrolidin-2-ylmethyl)-amino]-acetic acid

[((S)-1-Acetyl-piperidin-3-yl)-methyl-amino]-acetic acid

[(1-Acetyl-pyrrolidin-3-yl)-ethyl-amino]-acetic acid

[(4-Acetylamino-cyclohexyl)-ethyl-amino]-acetic acid

[((R)-1-Acetyl-pyrrolidin-3-yl)-cyclopropyl-amino]-acetic acid

(1R,4R)-[(4-Acetylamino-cyclohexyl)-isopropyl-amino]-acetic acid

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

1-{4-[(2-Hydroxy-ethylamino)-methyl]-piperidin-1-yl}-ethanone

1-((S)-2-{[(2-Hydroxy-ethyl)-methyl-amino]-methyl}-pyrrolidin-1-yl)-ethanone

1-{(S)-3-[Ethyl-(2-hydroxy-ethyl)-amino]-pyrrolidin-1-yl}-ethanone