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

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

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

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

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

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

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

1-{4-[Ethyl-(2-hydroxy-ethyl)-amino]-piperidin-1-yl}-ethanone

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

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

(1R,4R)-N-{4-[Cyclopropyl-(2-hydroxy-ethyl)-amino]-cyclohexyl}-acetamide