A Concise and Convenient Synthesis of <scp>dl</scp>-<i>proto</i>-Quercitol and <scp>dl</scp>-<i>gala</i>-Quercitol <i>via</i> Ene Reaction of Singlet Oxygen Combined with [2 + 4] Cycloaddition to Cyclohexadiene
作者:Emine Salamci、Hasan Seçen、Yasar Sütbeyaz、Metin Balci
DOI:10.1021/jo962092+
日期:1997.4.1
hydroxyl group and KMnO(4) oxidation of the double bond gave proto-quercitol 10b. Application of the same reaction sequences to 4 resulted in the formation of gala-quercitol 14. Quercitols were easily obtained by ammonolysis of acetate derivatives in MeOH. The outcome of dihydroxylation reactions were supported by conformational analysis.
1,4-环己二烯的光氧合以88∶12的比例提供氢过氧内过氧化物3和4。用LiAlH(4)或硫脲还原3,然后将羟基乙酰化,将KMnO(4)双键氧化,得到原槲皮醇10b。将相同的反应序列应用于4将导致生成Gal-quercitol14。可通过将乙酸酯衍生物在MeOH中氨解来轻松获得Quercitols。构象分析支持了二羟基化反应的结果。