3-cyclopentyl-2-[6-oxo-4-(2-trifluoromethyl-phenoxy)-6H-pyridazin-1-yl]-propionic acid 、
3-氨基-1-甲基吡唑-5-羧酸甲酯 以afforded 5-{3-cyclopentyl-2-[6-oxo-4-(2-trifluoromethyl-phenoxy)-6H-pyridazin-1-yl]-propionylamino}-2-methyl-2H-pyrazole-3-carboxylic acid methyl ester as a white solid (22.1 mg, 17%)的产率得到5-{3-cyclopentyl-2-[6-oxo-4-(2-trifluoromethyl-phenoxy)-6H-pyridazin-1-yl]-propionylamino}-2-methyl-2H-pyrazole-3-carboxylic acid methyl ester