Piperidine compounds and their preparation and use
Patent 5041455 Issued on August 20, 1991. Estimated Expiration Date: 
February 20, 2010. 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.
February 20, 2010. 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 ReferencesLipophillically-substituted piperidine oxadiazolyl compounds and their use in stimulating cognitive functions 1,2,3-Triazole and tetrazole substituted piperidine or tetrahydropyridine compounds useful as acetylcholine agonists Lipophilically-substituted piperidine oxadiazolyl compounds and their use in stimulating cognitive functions (II) Patent #: 4933353 InventorsAssigneeApplicationNo. 482272 filed on 02/20/1990US Classes:514/342, Ring sulfur in the additional hetero ring514/236.2, Three or more ring hetero atoms in the additional hetero ring514/318, The additional ring is a six-membered hetero ring consisting of one nitrogen and five carbon atoms514/340, Ring nitrogen in the additional hetero ring (e.g., oxazole, etc.)544/124, Six-membered ring consisting of one nitrogen and five carbons (e.g., pyridine, etc.)546/193, Pyridine ring or partially hydrogenated pyridine ring546/268.7, Thiadiazoles (including hydrogenated)546/269.4Oxadiazole ring bonded directly to the six-membered hetero ringExaminersPrimary: Fan, Jane T.Attorney, Agent or FirmForeign Patent References
International ClassC07D 417/04Foreign Application Priority Data1989-02-22 DKAbstractThe present invention relates to therapeutically active piperidine compounds, a method of preparing the same and to pharmaceutical compositions comprising the compounds. The novel compounds are useful as stimulants of the cognitive function of the forebrain and hippocampus of mammals and especially in the treatment of Alzheimer's disease, severe painful conditions and glaucoma.Field of SearchPyridine ring or partially hydrogenated pyridine ringSix-membered ring consisting of one nitrogen and five carbons (e.g., pyridine, etc.) Ring nitrogen in the additional hetero ring (e.g., oxazole, etc.) Ring sulfur in the additional hetero ring The additional ring is a six-membered hetero ring consisting of one nitrogen and five carbon atoms |
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