(3aR,7R,7aR)-2-(Benzyl-methyl-amino)-7-tert-butyl-4-[1-cyano-2,2-dimethyl-prop-(E)-ylidene]-6-oxo-3a,6,7,7a-tetrahydro-4H-pyrano[4,3-d]oxazole-7-carbonitrile 以
甲醇 为溶剂,
反应 5.0h,
以1%的产率得到(3aS,7R,7aS)-2-(Benzyl-methyl-amino)-7-tert-butyl-4-[1-cyano-2,2-dimethyl-prop-(E)-ylidene]-6-oxo-3a,6,7,7a-tetrahydro-4H-pyrano[4,3-d]oxazole-7-carbonitrile