Bromodimethylsulfonium bromide/silver triflate-promoted glycosylations using glycosyl allenoates as donors
作者:Yongzhen Zhang、Peng Wang、Ni Song、Ming Li
DOI:10.1016/j.carres.2013.08.005
日期:2013.11
A series of novel glycosyl allenoates were prepared by condensions of hemiacetals with 3,3-dimethyl-4, 5-allenoic acid. Their glycosylations with various alcohols under the promotion of bromodimethylsulfonium bromide/silver triflate smoothly proceeded to produce disaccharides. Studies reveal that allenic group is crucial for the efficient glylcosylation of glycosyl allenoate. (C) 2013 Elsevier Ltd. All rights reserved.