isolated products. Thus, cholesterol gave 4-oxa-A-homocholest-5-en-3-ol and its acetate in a 53% yield. The products differ considerably from those reported by us after the photolysis of the hypoiodites by using mercury(II) oxide and iodine as the reagents for generating the hypoiodites; they also differ from those in the oxidation of the steroidal alcohols with lead tetraacetate alone. The photolysis
人们发现,在
苯中原位生成的甾体环状高
烯丙醇(如
胆固醇)和环状醇(如 5α-androstan-17β-ol)的次
碘酸盐的光解通常会导致前所未有的形成相应的乳醇
乙酸酯的产率高达 66%。在大多数情况下,乳醇
乙酸酯在分离过程中很容易
水解成乳醇,而乳醇是分离的产物。因此,
胆固醇以 53% 的产率得到 4-oxa-A-homocholest-5-en-3-ol 及其
醋酸盐。产物与我们报道的以
氧化
汞和
碘为试剂产生次
碘酸盐光解次
碘酸盐后的产物有很大差异;它们也与单独用四
乙酸铅氧化
甾醇的不同。