PREPARATION OF INTERMEDIATES USEFUL IN THE SYNTHESIS OF 2'-CYANO-2'-DEOXY-N4-PALMITOYL-1-BETA-D-ARABINOFURANOSYLCYTOSINE

摘要

The present invention relates to a process for preparing a compound of formula 682-4, said process comprising the steps of. (i) converting a compound of formula 682-1 into a compound of formula 682-2'; (ii) converting said compound of formula 682-2' into a compound of formula 682-3; and (iii) converting said compound of formula 682-3 into a compound of formula 682-4. Further aspects of the invention relate to the use of the above process in the preparation of 2'-cyano-2'-deoxy-N4 -palmitoyl-1-.beta.-D-arabmofuranosylcytosine, a pyrimidine nucleoside which is therapeutically useful in the treatment and/or prevention of cancer.