Purine derivative
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United States of America Patent
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Feb 22, 2000
Grant Date -
N/A
app pub date -
Mar 3, 1998
filing date -
Jul 3, 1996
priority date (Note) -
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Abstract
This invention relates to novel purine derivatives of formula (I): ##STR1## where R.sup.2 and R.sup.9 are hydrocarbon groups, R.sup.6 is an amino group and R.sup.8 is a hydroxyl, or acyloxy group. These purine derivatives are effective at promoting secretion of interferon in patients, and can be used to treat diseases against which interferon is effective.
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