Method of treating bronchoconstriction with 1,3-unsymmetrical straight chain alkyl-substituted 8-phenylxanthines

摘要

1,3-Alkyl substituted-8-phenylxanthines in which the straight chain alkyl substituents are different and pharmaceutically acceptable salts of such compounds are disclosed. Preferred compounds have 1-n-propyl-3-methyl and 1-methyl-3-n-propyl substituents. The compounds are potent bronchodilators.