The use of iodobenzene diacetate and iodine under photolytic conditions provides and efficient method for the oxidative cyclization of spiroacetals bearing an hydroxyalkyl side chain to bis-spiroacetals. An overview is provided of the use of this reaction for the synthesis of several bis-spiroacetal containing natural products such as the polyether antibiotics salinomycin and CP44,161 and the shellfish toxins, the spirolides.
在光解条件下使用二
乙酸碘苯和
碘,为带有羟基烷基侧链的螺烷基
乙醛氧化环化成双螺烷基
乙醛提供了一种有效的方法。本文概述了利用该反应合成多种含双螺
乙醛的
天然产物的情况,如聚醚抗生素
盐霉素和 CP44,161 以及贝类毒素
螺旋藻毒素。