(S)-2-Amino-N-[4-(benzyl-ethyl-amino)-cyclohexyl]-propionamide

(S)-2-Amino-N-[4-(benzyl-isopropyl-amino)-cyclohexyl]-propionamide

(S)-2-Amino-1-{2-[(benzyl-cyclopropyl-amino)-methyl]-pyrrolidin-1-yl}-propan-1-one

(S)-2-Amino-1-{2-[(benzyl-methyl-amino)-methyl]-pyrrolidin-1-yl}-3-methyl-butan-1-one

(S)-2-Amino-1-[(S)-3-(benzyl-ethyl-amino)-pyrrolidin-1-yl]-3-methyl-butan-1-one

(S)-2-Amino-N-[4-(benzyl-ethyl-amino)-cyclohexyl]-3-methyl-butyramide

(S)-2-Amino-1-[(R)-3-(benzyl-isopropyl-amino)-piperidin-1-yl]-3-methyl-butan-1-one

[(S)-3-(Benzyl-methyl-amino)-pyrrolidin-1-yl]-acetic acid

[(R)-3-(Benzyl-methyl-amino)-piperidin-1-yl]-acetic acid

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

[4-(Benzyl-ethyl-amino)-cyclohexylamino]-acetic acid