2-Amino-N-(2-oxo-2-pyrazin-2-yl-ethyl)-acetamide

(S)-2-Amino-N-isopropyl-N-(3-methylsulfanyl-pyrazin-2-ylmethyl)-propionamide

(S)-2-Amino-N-(3-methoxy-pyrazin-2-ylmethyl)-3-methyl-butyramide

(S)-2-Amino-N-(1-pyrazin-2-yl-ethyl)-propionamide

(S)-2-Amino-3,N-dimethyl-N-(1-pyrazin-2-yl-ethyl)-butyramide

(S)-2-Amino-N-(6-chloro-pyridazin-3-ylmethyl)-propionamide

[Isopropyl-(3-methoxy-pyrazin-2-ylmethyl)-amino]-acetic acid

[(3-Chloro-pyrazin-2-ylmethyl)-cyclopropyl-amino]-acetic acid

[(6-Chloro-pyridazin-3-ylmethyl)-cyclopropyl-amino]-acetic acid

2-[Cyclopropyl-(2-hydroxy-ethyl)-amino]-1-furan-2-yl-ethanone

2-[(2-Hydroxy-ethyl)-isopropyl-amino]-1-thiazol-2-yl-ethanone