Sun W, Tian G, Ding M, Zou X, Hu J, Yin J. Chemical Synthesis of the Trisaccharide Repeating Unit of the O-Antigen of
Fusobacterium nucleatum ATCC 51191.
Org Lett 2024;
26:321-326. [PMID:
38147353 DOI:
10.1021/acs.orglett.3c03981]
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Abstract
Herein, the trisaccharide repeating unit of Fusobacterium nucleatum ssp. animalis ATCC 51191, which is used to develop oncomicrobial vaccines, was efficiently synthesized for the first time. The synthetic approach featured the following: (i) construction of the 1,2-cis-glycosidic linkage using the large steric hindrance of a phthalimide group at C4 of fucosamine; (ii) synthesis of the trisaccharide via a linear [2 + 1] glycosylation strategy; and (iii) installation of l-alanine using hexafluorophosphate azabenzotriazole tetramethyl uronium as a promoter.
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