Synthesis of Some 2′,3′-Didehydro-2′,3′-dideoxynucleosides and 2′,3′- dideoxynucleosides

Abstract

2′,3′-Didehydro-2′,3′-dideoxyformycin A (4), 2′,3′-dideoxyformycin A (11), 2′,3′-dideoxytubercidin (12) and 2′,3′-dideoxy-3-deazaadenosine (19) were synthesised via a free radical β-elimination of bromo and phenoxythiocarbonyl groups or by deoxygenation of appropriate 2′ and 3′-deoxy counterparts.