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

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

2-[{(1-Acetyl-piperidin-4-yl)methyl}amino]acetic acid

2-[{(1-Acetyl-pyrrolidin-3-yl)methyl}amino]acetic acid

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

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

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

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

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

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

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