、
4,5-二氯-2-(四氢-吡喃-2-基)-2H-吡嗪-3-酮 、
2,3-乙二氧基酚 、
methyl 2-bromo-3-cyclohexylpropanoate 以afforded 3-cyclohexyl-2-[4-(2,3-dihydro-benzo[1,4]dioxin-5-yloxy)-6-oxo-6H-pyridazin-1-yl]-propionic acid (30 mg, 89% for the final step) which的产率得到3-cyclohexyl-2-[4-(2,3-dihydro-benzo[1,4]dioxin-5-yloxy)-6-oxo-6H-pyridazin-1-yl]-propionic acid