Ortho fused cycloalkano-4-quinolone-3-carboxylic acid derivatives

Claim 1

A cycloalkano-quinolone compound having the formula: ##SPC8## wherein one of R 1 and R 2 represents a member selected from the group consisting of hydrogen, halogen, nitro, amino and lower alkanoyl amino, and the other of R 1 and R 2 taken together with R 3 forms an alkylene bridge containing 3 to 5 carbon atoms, X is hydrogen or lower alkyl of up to 6 carbon atoms, which may be substituted by a member of the group consisting of halogen, hydroxyl, lower alkanoyloxy, lower alkoxy, phenoxy, benzyloxy, mercapto, lower alkylmercapto, lower carbocyclic arylsulfonyloxy, and lower alkylsulfonyloxy, or X is unsubstituted lower alkenyl including alkadienyl, or lower alkynyl, and Y is a member selected from the group consisting of hydroxyl and lower alkoxy; and the non-toxic salts thereof.