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

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

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

(S)-2-Amino-N-(4-cyano-benzyl)-N-isopropyl-3-methyl-butyramide

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

(2-Fluoro-benzylamino)-acetic acid

(4-Bromo-benzylamino)-acetic acid

[(2-Chloro-benzyl)-methyl-amino]-acetic acid

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

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

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