Formation of Glycosyl Trichloroacetamides from Trichloroacetimidate Donors Occurs through an Intermolecular Aglycon Transfer Reaction
作者:Koen N. A. van de Vrande、Dmitri V. Filippov、Jeroen D. C. Codée
DOI:10.1021/acs.orglett.3c02196
日期:2023.8.25
corresponding anomeric trichloroacetamides, we have used a combination of 13C- and 15N-labeled glycosyl trichloroacetimidate donors in a series of crossover experiments. These unambiguously show that trichloroacetamides are formed via an intermolecular aglycon transfer mechanism. This insight enables the design of more effective glycosylation protocols, preventing the formation of dead-end side products
为了探讨常用的三氯乙酰亚胺酯糖基供体重排成相应的异头三氯乙酰胺的反应机制,我们在一系列交叉实验中使用了13 C 和15 N 标记的糖基三氯乙酰亚胺酯供体的组合。这些明确表明三氯乙酰胺是通过分子间苷元转移机制形成的。这种见解使得能够设计更有效的糖基化方案,防止死端副产物的形成。