tert-butyl (4-((1R,4R,5R)-5-((tert-butoxycarbonyl)amino)-2-azabicyclo[2.2.1]heptan-2-yl)-2-((2-((R)-1-((diisopropoxyphosphoryl)oxy)ethyl)pyrimidin-5-yl)oxy)-5,6-difluoro-9H-pyrimido[4,5-b]indol-8-yl)(methyl)carbamate 在
氮气 、
三氟乙酸 、 crude product 、 H+ 作用下,
以
三氟乙酸 为溶剂,
反应 16.0h,
以to give (R)-1-(5-((4-((1R,4R, S5R)-5-amino-2-azabicyclo[2.2.1]heptan-2-yl)-5,6-difluoro-8-(methylamino)-9H-pyrimido[4,5-b]indol-2-yl)oxy)pyrimidin-2-yl)ethyl dihydrogen phosphate 3 (0.112 g, 0.200 mmol, 71%) as white solid (LC/MS (ESI, M+H+)=563)的产率得到(R)-1-(5-((4-((1R,4R,5R)-5-amino-2-azabicyclo[2.2.1]heptan-2-yl)-5,6-difluoro-8-(methylamino)-9H-pyrimido[4,5-b]indol-2-yl)oxy)pyrimidin-2-yl)ethyl dihydrogen phosphate