3-[[1-[3-[(1S)-1-(2,2-difluoro-1,3-benzodioxol-5-yl)ethoxy]-4-fluoro-phenyl]-3-(trifluoromethyl)-4,5,6,7-tetrahydroindazol-7-yl]oxy]-N-hydroxy-bicyclo[1.1.1]pentane-1-carboxamidine 、
N,N'-羰基二咪唑 在
methanesulfenyl fluoride 作用下,
以
乙酸乙酯 为溶剂,
以44.9 %的产率得到3-[3-[[(7S)-1-[3-[(1S)-1-(2,2-difluoro-1,3-benzodioxol-5-yl)ethoxy]-4-fluoro-phenyl]-3-(trifluoromethyl)-4,5,6,7-tetrahydroindazol-7-yl]oxy]-1-bicyclo[1.1.1]pentanyl]-2H-1,2,4-oxadiazol-5-one