Here we review the equatorial β-directing effects of electron-withdrawing protecting groups at remote positions of mannopyranosyl donors, mannuronate donors, rhamnopyranosyl donors, and 2,6- dideoxyglucopyranosyl donors. We discuss the equatorial α-directing effect of an electron-withdrawing group at the N-5 position of sialyl donors. The proposed mechanism and origin of some of the equatorial β-directing effects are described. We also review the effects of potentially participating, electron-withdrawing protecting groups at remote positions of glycopyranosyl and glycofuranosyl donors on the glycosylation stereochemistries. Further, we present substantial evidence in favor of the remote participation by the electron-withdrawing protecting groups and also include reports that are opposed to remote participation. © 2011 Springer-Verlag Berlin Heidelberg.
CITATION STYLE
Kim, K. S., & Suk, D. H. (2011). Effect of electron-withdrawing protecting groups at remote positions of donors on glycosylation stereochemistry. Topics in Current Chemistry. https://doi.org/10.1007/128_2010_107
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