title: Stereospecific synthesis of thymidine cyclic 3',5'-(Sp)-and (Rp)-phosphorothioates.
mesh_terms: D009712:Nucleotides, Cyclic / Q000138:chemical synthesis*; D013873:Thionucleotides / Q000138:chemical synthesis*; D013942:Thymine Nucleotides / Q000138:chemical synthesis*
chemical_list: D009712:Nucleotides, Cyclic; D013873:Thionucleotides; D013942:Thymine Nucleotides