(2-Acetylamino-cyclohexylamino)-acetic acid

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

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

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

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

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

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

(1R,4R)-N-[4-(2-Hydroxy-ethylamino)-cyclohexyl]-acetamide

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

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

1-{3-[(2-Hydroxy-ethyl)-isopropyl-amino]-piperidin-1-yl}-ethanone