N-((2S)-1-((2-(3,5-difluoro-4-hydroxyphenyl)-1,3-benzoxazol-6-yl)oxy)propan-2-yl)acetamide 、
2,2,2-三氟乙基三氟甲烷磺酸酯 以in the same manner as in Example 5, the title compound was obtained的产率得到N-((2S)-1-((2-(3,5-difluoro-4-(2,2,2-trifluoroethoxy)phenyl)-1,3-benzoxazol-6-yl)oxy)propan-2-yl)acetamide