Polymer-Supported Synthesis of a Branched Trisaccharide of the Type IA Group B Streptococcus Capsular Polysaccharide: 3-Iodo-4-methoxybenzyl as a New O-Protecting Group
作者:Seema Mehta、Dennis M. Whitfield
DOI:10.1016/s0040-4020(00)00612-8
日期:2000.8
independently synthesized and used to introduce this new protectinggroup. The levulinoyl and the IPMB protectinggroups have been used in an orthogonal manner to create 3,4-branching on a galactopyranosyl residue. Due to the enhanced acid stability of the IPMB group over the PMB group, the former group was critical to the success of the synthesis. The final trisaccharide and its intermediates were cleaved