(3aR,4R,6R,6aS)-tert-butyl 4-[(tert-butyldimethylsilyloxy)methyl]-6-[(R)-3-hydroxybutyl]-2,2-dimethyldihydro-3aH-[1,3]dioxolo[4,5-c]pyrrole-5(4H)-carboxylate 在
对甲酚 、 zinc dibromide 作用下,
以
二氯甲烷 为溶剂,
反应 20.0h,
以80%的产率得到(R)-4-{(3aS,4R,6R,6aR)-6-[(tert-butyldimethylsilyloxy)methyl]-2,2-dimethyltetrahydro-3aH-[1,3]dioxolo[4,5-c]pyrrol-4-yl}butan-2-ol