(S)-2-Amino-N-(3-cyano-benzyl)-N-isopropyl-3-methyl-butyramide

(S)-2-Amino-N-cyclopropyl-3-methyl-N-(3-nitro-benzyl)-butyramide

[Ethyl-(3-nitro-benzyl)-amino]-acetic acid

[Isopropyl-(4-nitro-benzyl)-amino]-acetic acid

[(3-Cyano-benzyl)-cyclopropyl-amino]-acetic acid

2-Amino-N-[1-(3-chloro-phenyl)-ethyl]-acetamide

2-{[1-(4-Fluoro-phenyl)-ethyl]-isopropyl-amino}-ethanol

N*1*-[1-(3-Chloro-phenyl)-ethyl]-N*1*-cyclopropyl-ethane-1,2-diamine

(S)-2-Amino-N-isopropyl-N-(1-phenyl-propyl)-propionamide

[Cyclopropyl-(1-phenyl-propyl)-amino]-acetic acid

{Cyclopropyl-[1-(4-fluoro-phenyl)-ethyl]-amino}-acetic acid