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Total Synthesis of the Complete Protective Antigen of Vibrio cholerae O139
被引:10
|作者:
Soliman, Sameh E.
[1
,2
]
Kovac, Pavol
[1
]
机构:
[1] NIDDK, LBC, Sect Carbohydrates, NIH, Bethesda, MD 20892 USA
[2] Univ Alexandria, Dept Chem, Fac Sci, Alexandria 21321, Egypt
基金:
美国国家卫生研究院;
关键词:
glycosylation;
oligosaccharides;
O-specific antigens;
pathogenic bacteria;
stereoselectivity;
STRUCTURAL-ANALYSIS;
CONJUGATION-READY;
O-PS;
LIPOPOLYSACCHARIDE;
OLIGOSACCHARIDES;
FRAGMENTS;
IMMUNITY;
D O I:
10.1002/anie.201606116
中图分类号:
O6 [化学];
学科分类号:
0703 ;
摘要:
The first chemical synthesis of the complete protective O-antigen of a human-disease-causing pathogenic bacterium is described. The synthesis involved a protecting-group strategy that facilitated the regioselectivity of the key transformations, stereoselective glycosylation reactions, and enabled the one-step global deprotection of the completely assembled, fully protected, phosphorylated hexasaccharide by hydrogenation/hydrogenolysis. The final amino-group-functionalized, linker-equipped antigen was obtained in a form ready for conjugation to suitable carriers, for example, proteins, to yield immunogens.
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页码:12850 / 12853
页数:4
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