Four-component one-pot synthesis of a branched manno-pentasaccharide: tert-butyldiphenylsilyl ether as an in situ removable carbohydrate-protecting group
2011
Sarkar, Swarbhanu | Dutta, Samrat | Das, Gora | Sen, Asish Kumar
A branched mannose-pentasaccharide was synthesized in a convergent one-pot sequence involving chemo- and regioselective glycosylations of suitable acceptors and in situ removal of tert-butyldiphenylsilyl group. The process demonstrated that a combination of TMSOTf and TfOH can be used as an effective reagent for the fast and selective in situ de-protection of tert-butyldiphenylsilyl group, and also serve as part of the promoter system for the subsequent glycosylation reaction.
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