Dimethylformamide: An Unusual Glycosylation Modulator

A simple solution: When N,N-dimethylformamide was used to direct the stereochemical course of glycosylation reactions, 1,2-cis glycosylation products were formed with excellent selectivity. A straightforward highly α-stereoselective glycosylation involving preactivation (see scheme) should find broad application and be especially useful for sequential glycosylation reactions to form oligosaccharides. LG=leaving group. Detailed facts of importance to specialist readers are published as "Supporting Information". Such documents are peer-reviewed, but not copy-edited or typeset. They are made available as submitted by the authors. Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.