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US 4,381,303 AGranted
1,4,9,10-Tetrahydro-pyrazolo [4,3-]pyrido[-3,2-b][1,4]diazepin-10-ones
AssigneeDr. Karl Thomae GmbH
InventorsGunther Schmidt, Wolfhard Engel, Wolfgang Eberlein, Gunter Trummlitz, Gunther Engelhardt
Life of this patent
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Abstract
This invention is directed to the compounds of the formula ##STR1## wherein R.sub.1 is hydrogen or an alkyl of from 1 to 6 carbon atoms; R.sub.2 is an alkyl of from 1 to 3 carbon atoms; R.sub.3 is hydrogen or an alkyl of from 1 to 3 carbon atoms; and R.sub.4 is hydrogen or an alkyl of from 1 to 4 carbon atoms. These compounds are useful in pharmaceutical compositions which serve as analgesics, antiphlogistics and antipyretics.
Claims30
A compound of the formula ##STR7## wherein R.sub.1 is hydrogen or an alkyl of from 1 to 6 carbon atoms;
- R.sub.2 is an alkyl of from 1 to 3 carbon atoms;
- R.sub.3 is hydrogen or an alkyl of from 1 to 3 carbon atoms;
- and
- R.sub.4 is hydrogen or an alkyl of from 1 to 4 carbon atoms.
1 more element
Dependencies are inferred from the claim text.