STEREOSELECTIVITY IN THE FORMATION OF UNSATURATED WITTIG PRODUCTS AND STEREOSPECIFICITY IN THEIR ELECTROPHILE INDUCED CYCLIZATION TO C-GLYCOSIDES.

Article abstract of DOI:10.1016/0040-4020(89)80054-7

The stereoselective synthesis of E and Z unsaturated Wittig products derivated from 2,3-O-isopropylidene-5-O-trityl-D-ribofuranose (3) and 2,3:5,6-di-O-isopropylidene-D-mannofuranose (4) was described, as well as their stereospecific cyclization induced b