[(2S,3aS,6S,6aR)-2-phenyl-6-(2,2,2-trichloroethanimidoyl)oxy-6,6a-dihydro-4H-furo[3,4-d][1,3]dioxol-3a-yl]methyl benzoate 、 methyl 2-[4-[[(2R,4aR,6S,7R,8R,8aR)-8-[[4-(4,4,5,5,6,6,7,7,8,8,9,9,10,10,11,11,11-heptadecafluoroundecyl)phenyl]carbamoyloxy]-7-hydroxy-2-phenyl-4,4a,6,7,8,8a-hexahydropyrano[3,2-d][1,3]dioxin-6-yl]oxy]phenyl]acetate 在
三氟甲磺酸三甲基硅酯 作用下,
以
二氯甲烷 为溶剂,
以97%的产率得到[(2S,3aS,6S,6aR)-6-[[(2R,4aR,6S,7R,8S,8aR)-8-[[4-(4,4,5,5,6,6,7,7,8,8,9,9,10,10,11,11,11-heptadecafluoroundecyl)phenyl]carbamoyloxy]-6-[4-(2-methoxy-2-oxoethyl)phenoxy]-2-phenyl-4,4a,6,7,8,8a-hexahydropyrano[3,2-d][1,3]dioxin-7-yl]oxy]-2-phenyl-6,6a-dihydro-4H-furo[3,4-d][1,3]dioxol-3a-yl]methyl benzoate