[2-(tert-Butoxycarbonylamino-methyl)-pyrrolidin-1-yl]-acetic acid

[2-(tert-Butoxycarbonyl-methyl-amino)-cyclohexylamino]-acetic acid

[2-(tert-Butoxycarbonyl-ethyl-amino)-cyclohexylamino]-acetic acid

[2-(tert-Butoxycarbonyl-isopropyl-amino)-cyclohexylamino]-acetic acid

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

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

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

[(S)-1-(2-Hydroxy-ethyl)-pyrrolidin-2-ylmethyl]-methyl-carbamic acid benzyl ester

Ethyl-[1-(2-hydroxy-ethyl)-pyrrolidin-3-yl]-carbamic acid benzyl ester

(1R,4R)-Ethyl-[4-(2-hydroxy-ethylamino)-cyclohexyl]-carbamic acid benzyl ester

(1R,4R)-[4-(2-羟基-乙基氨基)-环己基]-异丙基-氨基甲酸苄酯, (1R,4R)-[4-(2-Hydroxy-ethylamino)-cyclohexyl]-isopropyl-carbamic acid benzyl ester