Improved Syntheses of Chlorodeoxynucleosides

Abstract
Halodeoxynucleosides are very useful intermediates in the synthesis of nucleoside and nucleotide derivatives. Because the iodides are more reactive,1 the corresponding chlorides have received relatively little attention although 5′-chloro-5′-deoxyadenosine (1) is effective in controlling blood pressure,2 and has been employed in a novel approach to the synthesis of polynucleotides.3 Other halonucleosides have been cited as potentially important antibiotics.1