摘要描述了三种脱氧-α-d-“吡喃葡萄糖基”磷酸酯和一系列双脱氧单氟-和双脱氧二氟-α-d-吡喃葡萄糖基磷酸酯的合成。测定其酸催化水解的速率常数。已显示糖环中的脱氧可将水解速率提高至先前对一系列苯基脱氧d-“吡喃葡萄糖苷”进行酸催化水解所见的程度[Mega and Matsushima,J. Biochem。东京,94(1983)1637]。这表明这两个反应的过渡态基本相同。通过确定一系列脱氧和脱氧氟取代的6-脱氧-6-氟-α-d-葡萄糖基吡喃糖基磷酸酯的水解速率,可证明对糖环的取代基作用具有可预测的加性,并且本质上主要是电子的,
Total synthesis of 3-deoxy and 3,6-dideoxy-dl-hexoses
作者:Marek Chmielewski
DOI:10.1016/0040-4020(80)80132-3
日期:——
of the double bond in 2 or 7, lactonisation of the resulting aldonic acid esters followed by acetylation and chromatographical separation of γ-lactones, reduction of lactones 16–23 to lactols with disiamylborane, and acetylation of lactols to free sugars. All compounds were obtained as pure diastereomers in racemic form.