(2'R,3R,4'S)-6-chloro-4'-[5-chloro-2-(2-methanesulfonylamino-1,1-dimethyl-2-oxo-ethoxy)-phenyl]-2'-(5-fluoro-2-methyl-phenyl) spiro[3H-indole-3,3'-piperidine]-2,6'(1H)-dione 、
乙酸酐 在
4-二甲氨基吡啶 盐酸 、
Sodium sulfate-III 、 crude product 、
乙醚 作用下,
以
二氯甲烷 为溶剂,
反应 1.0h,
以to give the title compound (200 mg)的产率得到(2'R,3R,4'S)-1-acetyl-6-chloro-4'-[5-chloro-2-(2-methanesulfonylamino-1,1-dimethyl-2-oxo-ethoxy)-phenyl]-2'-(5-fluoro-2-methyl-phenyl) spiro[3H-indole-3,3'-piperidine]-2,6'(1H)-dione