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Synlett 1998; 1998(1): 84-86
DOI: 10.1055/s-1998-1575
DOI: 10.1055/s-1998-1575
letter
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Mild but Efficient Methods for Stereoselective Glycosylation with Thioglycosides: Activation by [N-Phenylselenophthalimide-Mg(ClO4)2] and [PhIO-Mg(ClO4)2]
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Publikationsverlauf
Publikationsdatum:
31. Dezember 2000 (online)
Combinations of N-phenylselenophthalimide (N-PSP) or iodosobenzene (PhIO) with Mg(ClO4)2 effectively promote glycosylation with thioglycosides under mild conditions. A 2,2,2-trichloroethoxycarbonyl group or trityl protecting group at the 6-position increased α-selectivity on glycosylation with 2-O-benzylated donors.
glycosylation - thioglycoside - N-phenylselenophthalimide - iodosobenzene