(S)-2-Amino-1-(4-dimethylamino-piperidin-1-yl)-3-methyl-butan-1-one

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

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

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

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

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

(4-Dimethylaminomethyl-piperidin-1-yl)-acetic acid

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

{4-[(Isopropyl-methyl-amino)-methyl]-piperidin-1-yl}-acetic acid

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

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