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

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

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

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

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

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

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

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

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

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

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