(2R,4aR,6S,7R,8R,8aS)-2-naphthalen-2-yl-6-phenyl-4,4a,6,7,8,8a-hexahydropyrano[3,2-d][1,3]dioxine-7,8-diol 、
碘甲烷 在
sodium hydride 作用下,
以
DMF (N,N-dimethyl-formamide) 为溶剂,
反应 15.5h,
以93%的产率得到(2R,4aR,6S,7S,8R,8aR)-7,8-Dimethoxy-2-naphthalen-2-yl-6-phenyl-hexahydro-pyrano[3,2-d][1,3]dioxine