8-(benzyloxy)-5-[(1R)-2-({2-[4-(2,2-difluoro-2-phenylethoxy)-phenyl]ethyl}amino)-1-hydroxyethyl]quinolin-2(1H)-one 在
钯 silica gel 、 Dichloromethane methanol ammonium hydroxide 作用下,
以gave the title compound (1.05 g, 89%) as a yellow solid的产率得到5-[(1R)-2-({2-[4-(2,2-difluoro-2-phenylethoxy)phenyl]ethyl}amino)-1-hydroxyethyl]-8-hydroxyquinolin-2(1H)-one