Convergent synthesis of a pentasaccharide repeating unit corresponding to the cell wall O-antigen of Salmonella enterica O44
摘要:
A convergent synthetic strategy has been developed for the synthesis of a pentasaccharide fragment corresponding to the O-antigen of Salmonella enterica 044 strain. An intermediate tetrasaccharide derivative was prepared by a [2+2] block glycosylation of two disaccharide derivatives. The p-methoxybenzyl (PMB) group has been used as the in situ temporary protecting group minimizing the number of functional group manipulation steps. The application of the armed-disarmed glycosylation concept reduced the number of steps in the synthetic strategy. The glycosylation steps were highly stereoselective and high yielding. (C) 2013 Elsevier Ltd. All rights reserved.
Syntheses of
<i>Salmonella</i>
Paratyphi A Associated Oligosaccharide Antigens and Development towards Anti‐Paratyphoid Fever Vaccines
作者:Debashis Dhara、Scott M. Baliban、Chang‐Xin Huo、Zahra Rashidijahanabad、Khandra T. Sears、Setare Tahmasebi Nick、Anup Kumar Misra、Sharon M. Tennant、Xuefei Huang
DOI:10.1002/chem.202002401
日期:2020.12.4
With the emergence of multidrug resistant Salmonella strains, the development of anti‐Salmonella vaccines is an important task. Currently there are no approved vaccines against Salmonella Paratyphi A, the leading cause of paratyphoid fever. To fill this gap, oligosaccharides corresponding to the O‐polysacchariderepeatingunitsfrom the surface of Salmonella Paratyphi A have been synthesized through