PROCESS FOR THE DIASTEREOSELECTIVE SYNTHESIS OF NUCLEOSIDE ANALOGUES.

摘要

A diastereoselective process for the preparation of compounds of formula (I), wherein W is S, S=O, SO2, or O; X is S, S=O, SO2, or O; R1 is hydrogen or acyl, and R2 is a purine or pyrimidine base or an analogue or derivative thereof, is described.