Article ID Journal Published Year Pages File Type
5227345 Tetrahedron 2007 8 Pages PDF
Abstract

Chemical synthesis of two trisaccharides related to the saponin isolated from Centratherum anthelminticum is reported. Stereoselective, high-yielding glycosylation strategies were developed using H2SO4 immobilized on silica for activation of trichloroacetimidate donors, or in conjunction with N-iodosuccinimide for activation of a thioglycoside. A late stage TEMPO-mediated oxidation was performed for the formation of the required uronic acid moiety.

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Physical Sciences and Engineering Chemistry Organic Chemistry
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