作者:Ian Birtwistle、Peter Maddocks、John M. O'Callaghan、John Warren
DOI:10.1081/scc-100108233
日期:2001.1.1
The products obtained by titanium tetrachloride mediated dithioacetalization of four pentofuranoside derivatives were converted to thiofuranose sugars, either by direct cyclization via the unstable triflate intermediate, or by treatment of the derived mesylate. A facile inversion of a D-ribose dibenzyl dithioacetal 9 to an L-lyxose dibenzyl dithioacetal 12 via hydrolysis of the Mitsunobu derived formate
通过四氯化钛介导的四种呋喃戊糖苷衍生物的二硫代缩醛化获得的产物通过不稳定的三氟甲磺酸酯中间体直接环化或通过处理衍生的甲磺酸酯转化为硫代呋喃糖。还描述了通过水解 Mitsunobu 衍生的甲酸酯中间体,将 D-核糖二苄基二硫缩醛 9 轻松转化为 L-来苏糖二苄基二硫缩醛 12。