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

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

(1R,4R)-[4-((S)-2-Amino-3-methyl-butyrylamino)-cyclohexyl]-cyclopropyl-carbamic acid benzyl ester

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

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

[4-(Benzyloxycarbonyl-methyl-amino)-cyclohexylamino]-acetic acid

{3-[(Benzyloxycarbonyl-ethyl-amino)-methyl]-pyrrolidin-1-yl}-acetic acid

{(S)-2-[(Benzyloxycarbonyl-isopropyl-amino)-methyl]-pyrrolidin-1-yl}-acetic acid

{3-[(Benzyloxycarbonyl-isopropyl-amino)-methyl]-pyrrolidin-1-yl}-acetic acid

[(R)-3-(Benzyloxycarbonyl-cyclopropyl-amino)-pyrrolidin-1-yl]-acetic acid

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

2-{3-[(Benzyl-methyl-amino)-methyl]-pyrrolidin-1-yl}-ethanol

2-[4-(Benzyl-methyl-amino)-piperidin-1-yl]-ethanol

2-[3-(Benzyl-ethyl-amino)-piperidin-1-yl]-ethanol

2-{4-[(Benzyl-ethyl-amino)-methyl]-piperidin-1-yl}-ethanol