title: Halo sugar nucleosides. IV. Synthesis of some 4',5'-unsaturated pyrimidine nucleosides.
mesh_terms: D003837:Deoxy Sugars; D006219:Halogens; D009682:Magnetic Resonance Spectroscopy; D008722:Methods; D011741:Pyrimidine Nucleosides / Q000138:chemical synthesis*
chemical_list: D003837:Deoxy Sugars; D006219:Halogens; D011741:Pyrimidine Nucleosides