(S)-2-Amino-N-isopropyl-N-(3-nitro-benzyl)-propionamide

(S)-2-Amino-N-(2-bromo-benzyl)-3,N-dimethyl-butyramide

(S)-2-Amino-N-ethyl-3-methyl-N-(4-nitro-benzyl)-butyramide

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

(3-Nitro-benzylamino)-acetic acid

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

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

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

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

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

2-Amino-N-[1-(4-fluoro-phenyl)-ethyl]-N-methyl-acetamide