Benzoic acid (3aS,4R,5S,8S,8aR)-8-hydroxy-5-methoxy-2,2-dimethyl-hexahydro-[1,3]dioxolo[4,5-d]oxepin-4-yl ester 在
sodium methylate 作用下,
以
甲醇 为溶剂,
反应 6.0h,
以96.5%的产率得到(3aR,4R,5S,8S,8aR)-5-Methoxy-2,2-dimethyl-hexahydro-[1,3]dioxolo[4,5-d]oxepine-4,8-diol