reaction for accessing 3-nitro-pyranoside, 3-nitro-septanoside or 4-nitro-septanoside derivatives, by reaction of the anion of nitromethane with glycoside dialdehydes is demonstrated. Initially, the feasibility of using unprotected glucoside dialdehydes was probed for the synthesis of the septanoside products, but this afforded pyranoside rather than septanoside targets. Subsequent studies utilised protected
通过
硝基甲烷的阴离子与糖苷二醛的反应,证明了硝基羟醛反应用于获得
3-硝基
吡喃糖苷,
3-硝基-庚糖苷或4-硝基-庚糖苷衍
生物的效用。最初,探索了使用未保护的
葡糖苷二醛来合成番石榴糖苷产品的可行性,但是这提供了
吡喃糖苷而不是番石榴糖苷靶标。随后的研究在该方法中利用了受保护的糖苷二醛,从而可以高收率地进入一系列
3-硝基或4-硝基-庚糖苷。NMR光谱分析允许确定由此提供的每种产物的立体
化学。