Quinolopyran-4-one-2-carboxylic acid derivatives and salts there

Details Quinolopyran-4-one-2-carboxylic acid derivatives and salts there Quinolopyran-4-one-2-carboxylic acid derivatives and salts there

1976-07-29

1978-04-25

Daus, Donald G.

Drug, bio-affecting and body treating compositions

Antigen, epitope, or other immunospecific immunoeffector

Bacterium or component thereof or substance produced by said...

260287CF, A61K 3147, C07D49104

Patent

active

040863492

ABSTRACT:
Quinolopyran-4-one-2-carboxylic acid derivatives and salts thereof are provided as novel compounds and as medicines for treatment of allergic asthma, each of the derivatives being represented by the general formula ##STR1## wherein X designates a member selected from the group consisting of alkyl groups having 1 to 5 carbon atoms, alkoxy groups having 1 to 5 carbon atoms, halogen atoms, aryl-substituted alkoxy groups having 7 to 10 total carbon atoms, alkoxycarbonyl groups having 2 to 6 total carbon atoms, and aryl groups having 6 to 10 carbon atoms, and n is any one of the integers 1 through 4, X being the same group or different groups in the case where n is at least 2.

REFERENCES:
patent: 3629290 (1971-12-01), Cairns et al.
patent: 4010270 (1977-03-01), Hess et al.

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