Approaches to representative examples of 3'-isomeric dideoxynucleosides with 2'(S),3'(R) and 2'(R),3'(S) absolute stereochemistry have been developed. These are among the first cases of isomeric dideoxynucleosides with the base moiety at the 3'-position. The chemistry developed has generality and can be applied to the synthesis of other related isomeric nucleosides.
Approaches to representative examples of 3'-isomeric dideoxynucleosides with 2'(S),3'(R) and 2'(R),3'(S) absolute stereochemistry have been developed. These are among the first cases of isomeric dideoxynucleosides with the base moiety at the 3'-position. The chemistry developed has generality and can be applied to the synthesis of other related isomeric nucleosides.