(1-Benzyl-piperidin-4-ylmethoxy)-acetic acid

((S)-1-Acetyl-pyrrolidin-2-ylmethoxy)-acetic acid

(1-Methyl-pyrrolidin-3-yloxy)-acetic acid

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

(3-Oxo-pyrrolidin-1-yl)-acetic acid

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

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

(2-Iodomethyl-pyrrolidin-1-yl)-acetic acid

(4-Iodo-cyclohexylamino)-acetic acid

[4-(Toluene-4-sulfonyloxy)-piperidin-1-yl]-acetic acid