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US 4,061,632 AGranted
3,11-Dihydro-6H-pyrazolo[1,5-a]pyrazolo[4 ',3':5,6]-pyrido[4,3-d]pyrimidin-6-one derivatives
AssigneeE. R. Squibb & Sons, Inc.
InventorsTheodor Denzel, Hans Hoehn
Life of this patent
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Abstract
New 3,11-dihydro-6H-pyrazolo[1,5-a]pyrazolo[4',3':5,6]pyrido[4,3-d]pyrimidin-6 -one derivatives have the general formula ##STR1## The compounds are useful as anti-inflammatory agents.
Claims10
A compound of the formula ##STR31## wherein R.sup.1 and R.sup.3 each is hydrogen, lower alkyl, phenyl, or phenyl-lower alkylene;
- R.sup.2, R.sup.4 and R.sup.6 each is hydrogen or lower alkyl;
- ##STR32## is piperidino, morpholino, thiamorpholino or piperazino;
- and physiologically acceptable acid addition salts thereof.
Dependencies are inferred from the claim text.