3-cyclopentyl-2-[6-oxo-4-(2-trifluoromethyl-phenoxy)-6H-pyridazin-1-yl]-propionic acid   、                                                                                      
1-甲基-5-(三氟甲基)吡唑-3-胺                                                                                                                                                                                                                                                                                                          以afforded 3-cyclopentyl-N-(1-methyl-5-trifluoromethyl-1H-pyrazol-3-yl)-2-[6-oxo-4-(2-trifluoromethyl-phenoxy)-6H-pyridazin-1-yl]-propionamide as a yellow solid (35.3 mg, 10%)的产率得到3-cyclopentyl-N-(1-methyl-5-trifluoromethyl-1H-pyrazol-3-yl)-2-[6-oxo-4-(2-trifluoromethyl-phenoxy)-6H-pyridazin-1-yl]-propionamide