A two-step transformation of saturated hydroxysteroids into oxasteroids is described; the reaction involves photo-reaction of the hypoiodites of the hydroxysteroids generated with mercury(II) oxide and iodine to give isomeric formyl esters [e.g., 2 and 3], which are cyclized to oxasteroids [e.g.,4 and 5] with sodium borohydride.
描述了饱和羟基
甾体化合物向甾体酮的二步转化过程;该反应涉及羟基
甾体化合物的次
碘酸盐在氧化
汞(II)和
碘的作用下进行光反应,生成异构的甲酰酯(例如,2和3),这些甲酰酯通过用
硼氢化钠环化形成甾体酮(例如,4和5)。