、
4,5-二氯-2-(四氢-吡喃-2-基)-2H-吡嗪-3-酮 、
萘酚 、
Alpha-溴-环戊烷丙酸甲酯 以afforded 3-cyclopentyl-2-[4-(naphthalen-1-yloxy)-6-oxo-6H-pyridazin-1-yl]-propionic acid (9.1 g, 80%) as a solid的产率得到3-cyclopentyl-2-[4-(naphthalen-1-yloxy)-6-oxo-6H-pyridazin-1-yl]-propionic acid