(3R,3'S)-5,7'-dichloro-6'-fluoro-3'-methyl-2',3',4',9'-tetrahydrospiro[indoline-3,1'-pyrido[3,4-b]indol]-2-one ((1S,4R)-7,7-dimethyl-2-oxobicyclo[2.2.1]heptan-1-yl)methanesulfonate 在
sodium carbonate 作用下,
以
乙醇 、
水 为溶剂,
以91.2%的产率得到(1'R,3'S)-5,7'-二氯-6'-氟-2',3',4',9'-四氢-3'-甲基螺[3H-吲哚-3,1'-[1H]吡啶并[3,4-b]吲哚]-2(1H)-酮