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

((R)-1-Acetyl-piperidin-3-ylamino)-acetic acid

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

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

[(1-Acetyl-piperidin-4-ylmethyl)-methyl-amino]-acetic acid

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

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

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

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

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

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