、
(2,5-Dioxopyrrolidin-1-yl) (1,1,1-trifluoro-2-methylpropan-2-yl) carbonate 在
三乙胺 作用下,
以
二氯甲烷 为溶剂,
以35.7%的产率得到1,1,1-trifluoro-2-methylpropan-2-yl (2R,6S,13aS,14aR,16aS,Z)-5'-methyl-14a-(1-methylcyclopropylsulfonylcarbamoyl)-5,16-dioxo-1',2',3,5,6,7,8,9,10,11,13a,14,14a,15,16,16a-hexadecahydro-1H-spiro[cyclopropa[e]pyrrolo[1,2-a][1,4]diazacyclopentadecine-2,3'-pyrano[2,3-c]quinoline]-6-ylcarbamate