We have explored the possibility of using 1,3-diiodo-5,5-dimethylhydantoin (DIDMH) as an alternative to N-iodosuccinimide (NIS) for activation of glycosyl donors of the thioglycoside type in various glycosylation reactions. DIDMH was found to match NIS when it comes to the capability to activate thioglycosides and provide glycosylation products in good yields. Notably, with the two equivalents of reactive
我们已经探索了在各种糖基化反应中使用1,3-二
碘-5,5-二甲基乙内酰
脲(DI
DMH)替代N-
碘琥珀
酰亚胺(NIS)来活化
硫代糖苷类型糖基供体的可能性。在激活
硫糖苷和提供高收率糖基化产物的能力方面,发现DI
DMH与NIS相匹配。值得注意的是,每个DI
DMH分子具有两个当量的反应性
碘鎓离子,因此只需添加较少的质量即可使该活化剂在经济上成为NIS的替代原子。此外,发现DI
DMH可以在储存数周后保持稳定,并且价格与NIS相当。掌握了这些知识后,我们因此鼓励
糖类社区考虑使用DI
DMH在糖基化反应中激活
硫糖苷。