[(4aR,6S,7R,8S,8aR)-6-bromo-2-methyl-8-[(2S,3R,4S,5S,6R)-3,4,5-triacetyloxy-6-(acetyloxymethyl)oxan-2-yl]oxy-4,4a,6,7,8,8a-hexahydropyrano[3,2-d][1,3]dioxin-7-yl] benzoate 在
四丁基溴化铵 作用下,
以
四氯化碳 为溶剂,
生成 [(4aR,6R,7R,8S,8aR)-6-bromo-2-methyl-8-[(2S,3R,4S,5S,6R)-3,4,5-triacetyloxy-6-(acetyloxymethyl)oxan-2-yl]oxy-4,4a,6,7,8,8a-hexahydropyrano[3,2-d][1,3]dioxin-7-yl] benzoate