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US 4,377,579 AGranted
N-(Tetrazol-5-yl)phenazine-1-carboxamides
AssigneeMinnesota Mining and Manufacturing Company
InventorEdward H. Erickson
Life of this patent
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Abstract
Amides obtained by reaction of aminotetrazole and certain optionally substituted phenazinecarboxylic acids are potent anti-allergic agents.
Claims13
Compounds of the formula:
- ##STR17## wherein R is a hydrogen atom or a C.sub.1 -C.sub.4 alkyl group, X is a hydrogen atom, halogen atom, or a methoxy or methyl group, and Y is a hydrogen atom, halogen atom, or a methoxy or ethoxy group.
Dependencies are inferred from the claim text.