2-Amino-1-[4-(benzyl-isopropyl-amino)-piperidin-1-yl]-ethanone

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

(S)-2-Amino-1-{4-[(benzyl-isopropyl-amino)-methyl]-piperidin-1-yl}-propan-1-one

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

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

(S)-2-Amino-1-{4-[(benzyl-methyl-amino)-methyl]-piperidin-1-yl}-3-methyl-butan-1-one

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

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

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

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

[4-(Benzyl-ethyl-amino)-piperidin-1-yl]-acetic acid