PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 17595142-4 2007 These reactions at the C-4 position are nontrivial in comparison with similar reactions at the C-5 position of pyrimidine nucleosides, with hydrolysis of the arylsulfonate precursor being a competing reaction in some cases. Pyrimidine Nucleosides 111-133 complement C4A (Rodgers blood group) Homo sapiens 23-26 17595142-9 2007 The study represents the first successful synthesis of C-4 aryl pyrimidinone nucleoside analogues by cross-coupling of arylboronic acids with an arylsulfonate derived from a pyrimidine nucleoside, as well as antiviral testing of this new class of compounds. Pyrimidine Nucleosides 174-195 complement C4A (Rodgers blood group) Homo sapiens 55-58