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US 4,066,645 AGranted
Derivatives of pyrazolo [1,5-a]pyrido[3,4-e]pyrimidine
AssigneeE. R. Squibb & Sons, Inc.
InventorsTheodor Denzel, Hans Hoehn
Life of this patent
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Abstract
New derivatives of pyrazolo[1,5-a]pyrido[3,4-e]-pyrimidine have the general formulas ##STR1## The compounds are useful as anti-inflammatory agents.
Claims23
A compound having the formula ##STR17## wherein R.sup.1 is hydrogen, halogen, hydroxy, lower alkylthio or lower alkoxy;
- R.sup.2 and R.sup.3 each is hydrogen or lower alkyl;
- and
- R.sup.4 is lower alkoxy, lower alkylthio, amino, lower alkylamino or di(lower alkyl)amino.
A compound having the formula ##STR18## wherein R.sup.1 is hydrogen, halogen, hydroxy or lower alkylthio;
- R.sup.2 is lower alkyl;
- and
- R.sup.3 is hydrogen or lower alkyl.
A compound having the formula ##STR19## wherein R.sup.1 is hydrogen or halogen;
- R.sup.2 is lower alkyl;
- and
- R.sup.4 is lower alkoxy, lower alkylthio, amino, lower alkylamino or di(lower)alkyl amino.
Dependencies are inferred from the claim text.