2-(tert-butyl) 3a-methyl (1R,3aS,4S,7S,7aR)-2,3,3a,4,7,7a-hexahydro-6,7-dimethyl-1-<<(4-methylphenyl)sulfonyloxy>methyl>-3-oxo-4-<(propanoyloxy)methyl>-1H-isoindole-2,3a-dicarboxylate 在
三氟乙酸 作用下,
以
二氯甲烷 为溶剂,
反应 0.5h,
以96%的产率得到methyl (1R,3aS,4S,7S,7aR)-2,3,3a,4,7,7a-hexahydro-6,7-dimethyl-1-<<(4-methylphenyl)sulfonyloxy>methyl>-3-oxo-4-<(propanoyloxy)methyl>-1H-isoindole-3a-carboxylate