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A Route to Polyprenol Pyrophosphate-Based Probes of O- Polysaccharide Biosynthesis in Klebsiella pneumoniae O2a
Download2019-01-27
Ryan P. Sweeney, Todd L. Lowary
An approach for the assembly of polyprenol pyrophosphate-based probes of O-polysaccharide biosynthesis in Klebsiella pneumoniae serotype O2a is described. This convergent route features high yielding, diastereoselective glycosylations and the late stage installation of the polyprenol...
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Synthesis of the Campylobacter jejuni 81-176 strain capsular polysaccharide repeating unit reveals the absolute configuration of its O-methyl phosphoramidate motif
Download2019-01-30
V. Narasimharao Thota, Michael J. Ferguson, Ryan P. Sweeney, Todd L. Lowary
The O-methyl phosphoramidate (MeOPN) motif is a non-stoichiometric modification of capsular polysaccharides (CPS) in ~70% of all Campylobacter jejuni strains. Infections by C. jejuni lead to food-borne illnesses and the CPS they produce are key virulence factors. The MeOPN phosphorus atom in...