7-(substituted)cycloalkylamino-1-(substituted)-6-fluoro-1, 4-dihydro-4-oxo-3-quinolinecarboxylic acids
CA 2028869 A1 · Owner: American Cyanamid Company · Inventors: Bitha, Panayota; Lin, Yang-I
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
7-(SUBSTITUTED)CYCLOALKYLAMINO-1-, (SUBSTITUTED)-6-FLUORO-1.4-DIHYDRO-4- OXO-3-QUINOLINECARBOXYLIC ACIDS, ABSTRACT Novel antibacterial compounds of the formula: in which R1 is alkyl (C1-C4), cycloalkyl (C3-C6) alkoxy (C1-C4), alkylamino (C1-C3), vinyl phenyl, benzyl, -CH2CH2F or mono or polysubstituted phenyl (wherein the substituent is halogen, CF3 or OCH2F); n is an integer of from 1 to 4; and R2 is cis or trans hydroxy, amino, mono or disubstituted alkyl (C1-C3) amino and the pharmacologically accepted salts thereof are described.
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed October 30, 1990. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 30, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 30, 2012.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
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Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.