A method for treating a virus infection in a Newborn infant comprising a respiratory cell fusion virus infection and a method for treating a virus comprising administering a substituted thieno [3,2-d] pyrimidine, furo [3,2-d] Pyrrolo [3,2-d] pyrimidine compounds as well as substituted thieno [3,2-d] pyrimidines, furo [3,2-d] pyrimidines and pyrrolo [3,2- Methods and intermediates for the synthesis of compounds are provided herein. (I)
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