Journal
ORGANIC & BIOMOLECULAR CHEMISTRY
Volume 7, Issue 7, Pages 1471-1481Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/b819452a
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- Direccion General de Investigacion Cientifica y Tecnica [BQU 2002-03734]
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The assistance of neighboring protecting groups with different orientations in 1,2-diol acceptors and the reactivity of both reaction partners, the donor and the acceptor, have been evaluated as factors that determine the regioselectivity of glycosylation reactions. It has been established, by experimental and theoretical studies, that the regioselectivity for the glycosylation of a given OH group can be considerably increased by the presence of groups able to form a hydrogen bond with that OH group. Moreover higher regioselectivities are observed when armed donor/activated acceptor combinations are avoided.
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