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。