3-Alkylxanthines, composition and methods for the treatment of chronic obstructive-airway disease and cardiac disease
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United States of America Patent
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Feb 17, 1987
Issued Date -
N/A
app pub date -
Jul 25, 1984
filing date -
Oct 20, 1978
priority date (Note) -
Expired
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Abstract
Compounds having activity against chronic obstructive airway disease or cardiac disease, characterized by the formula ##STR1## wherein R.sup.1 is n-propyl, n-butyl, isobutyl, n-pentyl, 2-methylbutyl, 3-methylbutyl, 2,2-dimethylpropyl, cyclopropyl, cyclobutyl, cyclopentyl or cyclohexylmethyl, and R.sup.2 is hydrogen or methyl, provided that R.sup.2 is methyl when R.sup.1 is n-propyl, n-butyl or isobutyl, or a physiologically acceptable salt thereof.
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