(S)-2-Amino-1-[(R)-3-(benzyl-isopropyl-amino)-pyrrolidin-1-yl]-propan-1-one

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

(1R,4R)-(S)-2-Amino-N-[4-(benzyl-cyclopropyl-amino)-cyclohexyl]-propionamide

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

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

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

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

(1R,4R)-(S)-2-Amino-N-[4-(benzyl-cyclopropyl-amino)-cyclohexyl]-3-methyl-butyramide

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

{3-[(Benzyl-ethyl-amino)-methyl]-piperidin-1-yl}-acetic acid

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