3,8-Dialkylxanthines
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United States of America Patent
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Oct 8, 1985
Issued Date -
N/A
app pub date -
Aug 16, 1983
filing date -
Apr 18, 1980
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The invention refers to compounds having activity against chronic obstructive airway disease or cardiovascular disease, characterized by the formula ##STR1## wherein R.sup.1 is ethyl, n-propyl, n-butyl, isobutyl, n-pentyl, 2-methylbutyl, 3-methylbutyl, 2,2-dimethylpropyl, cyclopropyl, cyclobutyl, cyclopentyl or cyclohexylmethyl, and R.sup.2 is methyl, ethyl, n-propyl, isopropyl, cyclopropyl, n-butyl, isobutyl, tert. butyl, or cyclobutyl provided that R.sup.1 is ethyl when R.sup.2 is methyl, or a physiologically acceptable salt thereof. The invention also refers to processes for the preparation of these compounds, a pharmaceutical preparation containing one of the compounds and a method for the treatment of chronic obstructive airway disease and cardiovascular disease.
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