5-(11-fluoro-6H-pyrido[2',3':5,6][1,3]oxazino[3,4-a]indol-2-yl)-N-methyl-6-(N-methylmethylsulfonamido)-2-(6-oxo-1,6-dihydropyridin-3-yl)benzofuran-3-carboxamide 、
sodium chlorodifluoroacetate 在
氮气 、
二氯甲烷 、
水 、 Brine 、
Sodium sulfate-III 作用下,
以
乙腈 为溶剂,
反应 12.0h,
以to give the product of 2-(6-(difluoromethoxy)pyridin-3-yl)-5-(11-fluoro-6H-pyrido[2′,3′:5,6][1,3]oxazino[3,4-a]indol-2-yl)-N-methyl-6-(N-methylmethylsulfonamido)benzofuran-3-carboxamide and 2-(1-(difluoromethyl)-6-oxo-1,6-dihydropyridin-3-yl)-5-(11-fluoro-6H-pyrido[2′,3′:5,6][1,3]oxazino[3,4-a]indol-2-yl)-N-methyl-6-(N-methylmethylsulfonamido)benzofuran-3-carboxamide的产率得到2-(6-(difluoromethoxy)pyridin-3-yl)-5-(11-fluoro-6H-pyrido[2',3':5,6][1,3]oxazino[3,4-a]indol-2-yl)-N-methyl-6-(N-methylmethylsulfonamido)benzofuran-3-carboxamide