1,4-Dihydro-quinoline-3-carboxylic acid derivatives, process for their preparation and compositions containing them
Patent 4292317 Issued on September 29, 1981. Estimated Expiration Date: 
September 29, 1998. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
September 29, 1998. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesPiperazine derivatives Piperazinyl derivatives of quinoline carboxylic acids Patent #: 4146719 InventorAssigneeApplicationNo. 05/942635 filed on 09/15/1978US Classes:514/253.08, Having -C(=X)-, wherein X is chalcogen, bonded directly to carbon of the hetero ring of the quinoline ring system544/128, Quinoline or isoquinoline (including hydrogenated)544/363, Quinoline or isoquinoline (including hydrogenated)546/156Having -C(=X)-, wherein X is chalcogen, bonded directly to the six-membered hetero ringExaminersPrimary: Coughlan, Paul M. Jr.Attorney, Agent or FirmInternational ClassesC07D 215/00 (20060101)C07D 215/56 (20060101) Foreign Application Priority Data1977-09-20 GBAbstractNew 7-dialkylamino-1-substituted-6-halogeno-4-oxo-1,4-dihydroquinoline-3 carboxylic acids of the formula: ##STR1## wherein the R1 substituent is methyl, ethyl, vinyl or allyl and non-toxic pharmaceutically acceptable acid addition salts thereof. These compounds are useful as antibacterial agents. Also disclosed are processes for preparing the compounds. |
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