2-Amino-N-cyclopropyl-N-(3-methylsulfanyl-pyrazin-2-ylmethyl)-acetamide

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

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

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

(S)-2-Amino-N-isopropyl-N-(2-oxo-2-pyrazin-2-yl-ethyl)-propionamide

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

(S)-2-Amino-N-isopropyl-N-(6-methoxy-pyridazin-3-ylmethyl)-3-methyl-butyramide

[Methyl-(1-pyrazin-2-yl-ethyl)-amino]-acetic acid

[Cyclopropyl-(2-oxo-2-pyrazin-2-yl-ethyl)-amino]-acetic acid

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

2-(2-Hydroxy-ethylamino)-1-thiazol-2-yl-ethanone