[1-((S)-2-Amino-3-methyl-butyryl)-pyrrolidin-2-ylmethyl]-carbamic acid benzyl ester

[1-((S)-2-Amino-3-methyl-butyryl)-piperidin-3-yl]-carbamic acid benzyl ester

[(S)-1-((S)-2-Amino-3-methyl-butyryl)-pyrrolidin-3-yl]-methyl-carbamic acid benzyl ester

[(S)-1-((S)-2-Amino-3-methyl-butyryl)-pyrrolidin-2-ylmethyl]-ethyl-carbamic acid benzyl ester

[(S)-1-((S)-2-Amino-3-methyl-butyryl)-piperidin-3-yl]-ethyl-carbamic acid benzyl ester

[1-((S)-2-Amino-3-methyl-butyryl)-piperidin-4-ylmethyl]-ethyl-carbamic acid benzyl ester

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

[1-((S)-2-Amino-3-methyl-butyryl)-piperidin-2-ylmethyl]-cyclopropyl-carbamic acid benzyl ester

[1-((S)-2-Amino-3-methyl-butyryl)-piperidin-4-ylmethyl]-cyclopropyl-carbamic acid benzyl ester

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

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

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

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

[(S)-3-(Benzyloxycarbonyl-isopropyl-amino)-pyrrolidin-1-yl]-acetic acid

[4-(Benzyloxycarbonyl-isopropyl-amino)-piperidin-1-yl]-acetic acid