New Method for the Preparation of Some 2′- and 3′-Trifluoromethyl-2′,3′-dideoxyuridine Derivatives
作者:Pawel J Serafinowski、Catherine A Brown
DOI:10.1016/s0040-4020(99)01007-8
日期:2000.1
corresponding 2′- and 3′-difluoromethylene derivatives3 and 11. Attempted removal of the 3′- and 2′-O-trimethylsilylethoxymethyl (SEM) groups from compounds 3 and 11, with tetrabutylammonium fluoride in tetrahydrofuran (THF), resulted in fluorination at the unsaturated difluoromethylene carbon with loss of the SEM group and formation of hitherto unreported 2′,3′-didehydro-2′,3′-dideoxy-5′-O-dimeth