2-[4-(2,6-difluoro-phenoxy)-6-oxo-6H-pyridazin-1-yl]-4-ethyl-hexanoic acid   、                                                                                      
1-(3-aminopyrazol-1-yl)-2-methyl-propan-2-ol                                                                                                                                                                                                                                                                                                          以afforded 2-[4-(2,6-difluoro-phenoxy)-6-oxo-6H-pyridazin-1-yl]-4-ethyl-hexanoic acid [1-(2-hydroxy-2-methyl-propyl)-1H-pyrazol-3-yl]-amide as an off-white solid (50 mg, 31%)的产率得到2-[4-(2,6-difluoro-phenoxy)-6-oxo-6H-pyridazin-1-yl]-4-ethyl-hexanoic acid [1-(2-hydroxy-2-methyl-propyl)-1H-pyrazol-3-yl]-amide