Quinazoline derivatives
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United States of America Patent
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Sep 7, 1999
Issued Date -
N/A
app pub date -
Jun 3, 1998
filing date -
Aug 26, 1994
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Expired
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Abstract
Disclosed are quinazoline derivatives represented by formula (I): wherein R.sup.1 represents hydrogen, lower alkyl, alkenyl, or aralkyl; R.sup.2, R.sup.3, R.sup.4, and R.sup.5 represent hydrogen, lower alkyl, lower alkoxy, lower alkanoyl, or the like; R.sup.6, R.sup.7, R.sup.8, and R.sup.9 represent hydrogen, lower alkyl, lower alkoxy, aralkyloxy, or the like, or any adjoining two of them are combined to form methylenedioxy or the like; R.sup.10 represents hydrogen, lower alkyl, or the like; R.sup.11 and R.sup.12 represent hydrogen, lower alkyl, cycloalkyl, phenyl, or aralkyl, or R.sup.11 and R.sup.12 are combined together with N to form a heterocyclic group; and n represents 0, 1 or 2, and pharmaceutically acceptable salts thereof. These compounds have adenosine uptake inhibitory activity and are useful for the protection of myocardium and for the prevention or treatment of renal diseases such as nephritis and diabetic nephropathy.
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