Cyclic urea derivatives, pharmaceutical compositions containing these compounds and processes for preparing them
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United States of America Patent
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Dec 22, 1998
Issued Date -
N/A
app pub date -
May 1, 1997
filing date -
Mar 11, 1992
priority date (Note) -
Expired
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Abstract
The invention relates to cyclic urea derivatives of general formula ##STR1## wherein R.sub.a, R.sub.b, X and Y are as defined herein, pharmaceutical compositions containing the derivatives and processes for preparing them.
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