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| - Chemical Synthesis of Cyclodextrins by Using IntramolecularGlycosylation
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| - An efficient synthesis of cyclodextrins (CDs) by using the intramolecular glycosylation isdemonstrated. α-CD, an α(1→4)linked hexaglucoside, was prepared via a block condensation ofthree maltose units. A modified key maltose intermediate as a precursor to both glycosyl donorand acceptor components was prepared in 6 steps starting from maltose. All the glycosylation forchain elongation and cyclization of saccharides was carried out after tethering the donor to theacceptor by the phthaloyl bridge to give the desired saccharides in good yields with completeα-selectivity. δ-CD composed of 9 glucose units was synthesized by the same manner from threemaltotriose units.
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