Reagent Controlled β-Specific Dehydrative Glycosylation Reactions with 2-Deoxy-Sugars
作者:John Paul Issa、Dina Lloyd、Emily Steliotes、Clay S. Bennett
DOI:10.1021/ol4018547
日期:2013.8.16
2-deoxy-sugar hemiacetals for glycosylation presumably by converting them into glycosyl sulfonates in situ. By matching the leaving group ability of the sulfonate with the reactivity of the donor, it is possible to obtain β-specific glycosylation reactions. The reaction serves as proof of the principle that, by choosing promoters that can modulate the reactivity of active intermediates, it is possible to place
N-磺酰基咪唑可能通过将它们原位转化为糖基磺酸盐而活化2-脱氧糖半缩醛以进行糖基化。通过使磺酸盐的离去基团能力与供体的反应性匹配,可以获得β特异性糖基化反应。该反应证明了原理,即通过选择可以调节活性中间体反应性的启动子,可以将糖基化反应完全置于试剂的控制之下。