(S)-2-Amino-N-((S)-1-benzyl-pyrrolidin-3-yl)-N-isopropyl-propionamide

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

(1-Acetyl-pyrrolidin-3-ylamino)-acetic acid

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

(1-Acetyl-piperidin-4-ylamino)-acetic acid

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

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

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

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

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

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