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

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

[Ethyl-(1-methyl-piperidin-4-yl)-amino]-acetic acid

[(4-Dimethylamino-cyclohexyl)-ethyl-amino]-acetic acid

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

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

[Cyclopropyl-(1-methyl-pyrrolidin-3-yl)-amino]-acetic acid

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

((S)-3-Hydroxy-pyrrolidin-1-yl)-acetic acid

(3-Hydroxymethyl-piperidin-1-yl)-acetic acid

(4-Hydroxymethyl-piperidin-1-yl)-acetic acid