Iterative α-Glycosylation Strategy for 2-Deoxy- and 2,6-Dideoxysugars: Application to the One-Pot Synthesis of Deoxysugar-Containing Oligosaccharides
作者:Jiun-Han Chen、Jyh-Herng Ruei、Kwok-Kong Tony Mong
DOI:10.1002/ejoc.201400006
日期:2014.3
This paper describes the development of an iterative and α-selective glycosylation method for 2-deoxyglycosyl and 2,6-dideoxythioglycoside donors based on the DMF modulation concept. We used NMR spectroscopy to probe the 2-deoxyglycosyl imidinium intermediate and elucidated the conditions to decrease the formation of glycal and thus to increase the reaction yields. Further elaboration of the glycosylation
本文描述了基于 DMF 调制概念的 2-脱氧糖基和 2,6-二脱氧硫糖苷供体的迭代和 α-选择性糖基化方法的开发。我们使用 NMR 光谱来探测 2-脱氧糖基亚胺鎓中间体,并阐明了减少糖醛形成从而提高反应产率的条件。糖基化方法的进一步阐述为含 2-脱氧和 2,6-双脱氧糖苷的低聚糖的迭代一锅法合成打开了大门。