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

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

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

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

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

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

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

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

4-(2-Hydroxy-ethyl)-piperazine-1-carboxylic acid benzyl ester

4-(2-Amino-ethyl)-[1,4]diazepane-1-carboxylic acid tert-butyl ester

4-(2-Chloro-acetyl)-[1,4]diazepane-1-carboxylic acid tert-butyl ester