Quinolinone derivative and anti-allergic agent with said quinolinone derivative as the active ingredient
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United States of America Patent
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Sep 5, 2000
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app pub date -
Dec 30, 1998
filing date -
Jan 17, 1996
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Abstract
The present invention offers 7-aminoquinolinone derivatives, physiologically acceptable salts thereof, anti-allergic agents having as an active ingredient a 7-aminoquinolinone derivative or physiologically acceptable salt thereof, and 7-nitroquinolinone derivatives, wherein the 7-aminoquinolinone derivative is expressed by the following general formula (I): ##STR1## wherein R.sub.1 is a hydrogen atom or an alkyl group; R.sub.2 and R.sub.3 are mutually different groups, each of which is selected from among hydrogen atoms, acyl groups, alkyl groups or alkenyl groups; and R.sub.4 and R.sub.5 are mutually different or identical groups, each of which is selected from among hydrogen atoms, acyl groups, alkyl groups, alkenyl groups or aralkyl groups; and physiologically acceptable salts thereof.
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