Abstract Irradiation of hydroxyalkyl glucosides in the presence of mercury(II) oxide and iodine gave glucosidic C-1-spiroorthoesters. Where the starting glycoside had CH2OH, the cyclization was regio- and stereo-specific by α-attack. The C-1-spiroorthoesters were readily available in a “one-pot synthesis” starting from glucosyl halides.
摘要在氧化
汞(II)和
碘的存在下照射羟烷基
葡糖苷可得到
葡糖苷化的C-1-螺原酸酯。在起始糖苷具有CH2OH的情况下,环化通过α攻击具有区域和立体特异性。C-1-螺原酸酯可容易地以“一锅合成”的形式从
葡糖基卤化物获得。