3-cyclopentyl-2-[6-oxo-4-(4-trifluoromethyl-phenoxy)-6H-pyridazin-1-yl]-propionic acid 、
1-(3-aminopyrazol-1-yl)-2-methyl-propan-2-ol 以afforded 3-cyclopentyl-N-[1-(2-hydroxy-2-methyl-propyl)-1H-pyrazol-3-yl]-2-[6-oxo-4-(4-trifluoromethyl-phenoxy)-6H-pyridazin-1-yl]-propionamide as a yellow solid (23.1 mg, 9%)的产率得到3-cyclopentyl-N-[1-(2-hydroxy-2-methyl-propyl)-1H-pyrazol-3-yl]-2-[6-oxo-4-(4-trifluoromethyl-phenoxy)-6H-pyridazin-1-yl]-propionamide