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

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

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

(S)-2-Amino-N-(4-bromo-benzyl)-3,N-dimethyl-butyramide

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

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

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

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

[Methyl-(4-methylsulfanyl-benzyl)-amino]-acetic acid

[(4-Cyano-benzyl)-isopropyl-amino]-acetic acid

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