Anion-exchange resin Amberlite IRA-410 was found to be an effective and selective reagent for the nucleophilic displacement of primary tosyloxy (mesyloxy) groups in 3,5-disulfonates of xylofuranose derivatives I and III, as well as in 3,5,6-trisulfontes and 3,6-ditosyl derivatives of glucofuranose V, VII and IX. In all examined cases only the primary sulfonyloxy groups were replaced with chloride anions, whereupon the corresponding terminal chlorodeoxy derivatives were obtained in good yields.
发现阴离子交换树脂Amberlite IRA-410是一种有效且选择性的试剂,可用于3,5-二糖基衍生物I和III以及葡萄糖呋喃糖的3,5,6-三磺酸盐和3,6-二甲磺酸盐衍生物V、VII和IX中的原始tosyloxy(mesyloxy)基的亲核取代。在所有检查的情况下,只有原始磺酰氧基被氯离子取代,因此得到了相应的端基氯脱氧衍生物,收率良好。