Direct Synthesis of Glycans Containing Challenging ManNAcA Residues
作者:Catherine Alex、Alexei V. Demchenko
DOI:10.1021/acs.joc.1c02351
日期:2022.1.7
A method for direct, highly stereoselective synthesis of glycans containing β-linked d-mannosaminuronic acid (ManNAcA) residues is reported herein, among which is the capsular polysaccharide of Staphylococcus aureus type 8. Previous chemical syntheses of this glycan relied on indirect methods comprising glucosylation followed by a multistep epimerization and oxidation sequence. The high β-stereocontrol
Synthesis of oligosaccharide fragments of capsular polysaccharide <i>Staphylococcus aureus</i> type 8
作者:Satsawat Visansirikul、Stephen A. Kolodziej、Alexei V. Demchenko
DOI:10.1080/07328303.2020.1821042
日期:2020.9.1
To enhance our understanding of the activation and conjugation processes, reported herein is the synthesis of oligosaccharides comprising two sequential repeating units of capsular polysaccharideS. aureusserotype 8 (CP8). As in our previous syntheses of staphylococcal oligosaccharides, the potential propagation positions are blocked with methyl groups. While protein conjugates of carbohydrate antigens based on the structure of theS. aureuscapsular serotypes have the potential to contribute to aS. aureusvaccine, despite promising preclinical data, efficacy has not been detected in human populations thus far.