Classes of substituted 1H-imidazo[4,5-c]quinolines and 1H-imidazo[4,5-c]quinolin-4-amines are disclosed as bronchodilator agents and antiviral agents, respectively. Pharmacological methods of using the compounds as bronchodilators and antiviral agents, pharmaceutical compositions containing the compounds and synthetic intermediates for preparing the compounds are also described.
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