2-Chloro-N-methyl-N-pyrazin-2-ylmethyl-acetamide

(S)-2-Amino-3,N-dimethyl-N-pyrazin-2-ylmethyl-butyramide

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

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

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

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

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

(S)-2-Amino-N-isopropyl-3-methyl-N-(2-oxo-2-pyrazin-2-yl-ethyl)-butyramide

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

(S)-2-Amino-N-(6-methoxy-pyridazin-3-ylmethyl)-3,N-dimethyl-butyramide

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