<i>o</i>-Xylylene Protecting Group in Carbohydrate Chemistry: Application to the Regioselective Protection of a Single <i>vic</i>-Diol Segment in Cyclodextrins
作者:Patricia Balbuena、Rita Gonçalves-Pereira、José L. Jiménez Blanco、M. Isabel García-Moreno、David Lesur、Carmen Ortiz Mellet、José M. García Fernández
DOI:10.1021/jo302178f
日期:2013.2.15
A systematic study of the suitability of α,α′-dibromo-o-xylene as a reagent for cyclic o-xylylene protection of vic-diols in different monosaccharide substrates is reported. The installation of this protecting group, formally equivalent to a di-O-benzylation reaction, proceeds with good regioselectivity toward 1,2-trans-diequatorial diol systems in pyranose and furanose rings. Initially, the benzyl