(S)-2-Amino-1-((R)-3-dimethylamino-pyrrolidin-1-yl)-propan-1-one

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

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

(S)-2-Amino-1-(3-dimethylaminomethyl-piperidin-1-yl)-3-methyl-butan-1-one

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

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

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

((R)-3-Dimethylamino-pyrrolidin-1-yl)-acetic acid

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

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

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