Ring-rearrangement metathesis of substituted dihydropyrans and dihydrofurans
作者:Morgan Donnard、Théophile Tschamber、Didier Le Nouën、Sandy Desrat、Karen Hinsinger、Jacques Eustache
DOI:10.1016/j.tet.2010.11.036
日期:2011.1
The rearrangement of dihydropyrans and dihydrofurans featuring appending olefins has been studied. The rearranged products bear resemblance with polyunsaturated di- and trisaccharides. Examples of functionalization prior to, or following, rearrangement are provided suggesting that the method should be useful for the synthesis of nonclassical saccharides. This work also illustrates the power of cascade
strongly depends on the nature and relative configuration of the substituents in the starting trienic system. In addition, for a productive reaction to be observed, the site of initiation of the metathesis cascade is crucial. The compounds thus obtained may be useful for the synthesis of unusual polydeoxydisaccharides.