5-(ethyl-isobutyryl-amino)-4'-methyl-biphenyl-3-carboxylic acid 、
1-(吡嗪-2-基)乙胺 以to give 5-(ethyl-isobutyryl-amino)-4′-methyl-biphenyl-3-carboxylic acid (1-pyrazin-2-yl-ethyl)-amide, MS (M+H)=431的产率得到5-(ethyl-isobutyryl-amino)-4'-methyl-biphenyl-3-carboxylic acid (1-pyrazin-2-yl-ethyl)-amide