Piperazine derivatives, medicaments comprising these compounds, their use and processes for their preparation
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United States of America Patent
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Jul 13, 1999
Grant Date -
N/A
app pub date -
Dec 21, 1995
filing date -
Dec 23, 1994
priority date (Note) -
Expired
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Abstract
The present invention relates to piperazine derivatives of the general formula ##STR1## in which R.sub.a, Y.sub.1 to Y.sub.3 and E are defined herein, tautomers thereof, stereoisomers thereof, including their mixtures, and salts thereof, and in particular physiologically tolerated salts thereof with inorganic or organic acids or bases. These compounds have valuable pharmacological properties, such as aggregation-inhibiting activity. This invention also relates to medicaments comprising these compounds and to processes for the preparation of these compounds.
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