Regioselective Control in the Oxidative Cleavage of 4,6-<i>O</i>-Benzylidene Acetals of Glycopyranosides by Dimethyldioxirane
                                
                                    
                                        作者:Arnaud Stévenin、François-Didier Boyer、Jean-Marie Beau                                    
                                    
                                        DOI:10.1021/jo9026098
                                    
                                    
                                        日期:2010.3.5
                                    
                                    The oxidative cleavage of 4,6-O-benzylidene acetals of glycopyranosides using dimethyldioxirane (DMDO) leads to the corresponding hydroxy-benzoates lent yields. With a Proper choice of the neighboring protecting groups, this oxidative fragmentation provides the 6- or 4-hydroxyl derivatives in a highly regioselective manner.