(S)-2-Amino-N-isopropyl-N-(4-nitro-benzyl)-propionamide

[Cyclopropyl-(2-methoxy-benzyl)-amino]-acetic acid

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

2-[Cyclopropyl-(1-phenyl-propyl)-amino]-ethanol

2-{Cyclopropyl-[1-(4-fluoro-phenyl)-ethyl]-amino}-ethanol

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

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

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

(S)-2-Amino-N-cyclopropyl-N-[1-(4-fluoro-phenyl)-ethyl]-propionamide

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

{[1-(4-Fluoro-phenyl)-ethyl]-methyl-amino}-acetic acid