Antiallergic pyrimido[1,2-a]quinoxalin-2-carboxylic acid derivat

Drug – bio-affecting and body treating compositions – Designated organic active ingredient containing – Heterocyclic carbon compounds containing a hetero ring...

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544250, A61K 31505, C07D48704

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active

045101434

ABSTRACT:
Novel pyrimidines of the formula ##STR1## wherein R.sub.1 is selected from the group consisting of --OH, cation of metals and organic bases, alkoxy of 1 to 5 carbon atoms, hydrazino and 1H-tetrazol-5-yl-amino, A is selected from the group consisting of ##STR2## R.sub.2 is selected from the group consisting of hydrogen and alkyl of 1 to 5 carbon atoms and R.sub.3 and R.sub.4 are individually selected from the group consisting of hydrogen, halogen and alkyl and alkoxy of 1 to 5 carbon atoms with the proviso that when R.sub.1 is alkoxy of 1 to 5 carbon atoms, R.sub.2 is not hydrogen and their non-toxic, pharmaceutically acceptable acid addition salts having anti-allergic properties.

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