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

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

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

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

{(S)-2-[(Isopropyl-methyl-amino)-methyl]-pyrrolidin-1-yl}-acetic acid

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

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

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

4-(2-Hydroxy-ethyl)-2-methyl-piperazine-1-carboxylic acid tert-butyl ester

4-(2-Hydroxy-ethyl)-piperazine-1,2-dicarboxylic acid 1-benzyl ester 2-methyl ester

2-(2,4-Dimethyl-piperazin-1-yl)-ethanol