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Synergistic glycosylation strategy employing a nucleophilic modulation strategy (TMSI and Ph3PO) in combination with the O-6-Lev remote anchimeric assistance. A) General glycosylation mechanism. B) Synthesis of linear α(1–6)-glucan 11mer and 30mer. C) AGA of starch and glycogen oligo- and polysaccharides. The AGA cycle includes coupling (NIS/TfOH), capping (Ac2O), Fmoc deprotection (Et3N), and Lev deprotection (hydrazine).
