[1-((S)-2-Amino-3-methyl-butyryl)-piperidin-4-ylmethyl]-isopropyl-carbamic acid tert-butyl ester

{2-[(tert-Butoxycarbonyl-ethyl-amino)-methyl]-pyrrolidin-1-yl}-acetic acid

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

(1R,4R)-[4-(tert-Butoxycarbonyl-isopropyl-amino)-cyclohexylamino]-acetic acid

[(S)-3-(tert-Butoxycarbonyl-cyclopropyl-amino)-piperidin-1-yl]-acetic acid

{4-[(tert-Butoxycarbonyl-cyclopropyl-amino)-methyl]-piperidin-1-yl}-acetic acid

[1-(2-Hydroxy-ethyl)-pyrrolidin-3-yl]-methyl-carbamic acid benzyl ester

[(R)-1-(2-Hydroxy-ethyl)-piperidin-3-yl]-methyl-carbamic acid benzyl ester

Ethyl-[(S)-1-(2-hydroxy-ethyl)-pyrrolidin-2-ylmethyl]-carbamic acid benzyl ester

Ethyl-[2-(2-hydroxy-ethylamino)-cyclohexyl]-carbamic acid benzyl ester

[1-(2-Hydroxy-ethyl)-piperidin-2-ylmethyl]-isopropyl-carbamic acid benzyl ester