2-Amino-N-ethyl-N-(4-nitro-benzyl)-acetamide

(S)-2-Amino-N-ethyl-N-(3-methoxy-benzyl)-propionamide

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

(S)-2-Amino-N-cyclopropyl-N-(3-trifluoromethyl-benzyl)-propionamide

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

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

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

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

[(2,3-Dichloro-benzyl)-methyl-amino]-acetic acid

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

[(2-Bromo-benzyl)-isopropyl-amino]-acetic acid