PROCESS FOR THE PREPARATION OF NOVEL 2'-HALOGENOMETHYLYDENE-, 2'-ETHYLYDENE AND 2'-ETHYNYLCYTIDINE, URIDINE AND GUANOSINE DERIVATIVES

摘要

This invention relates to certain novel 2 min -halomethylidene, 2 min -ethenylidene and 2 min -ethynyl cytidine, uridine and guanosine derivatives, and compositions thereof, which are useful in the treatment of patients afflicted with neoplastic or viral disease states.