Piperidine compounds and their preparation and use
Patent 5043345 Issued on August 27, 1991. Estimated Expiration Date: 
August 31, 2009. 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.
August 31, 2009. 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 ReferencesPhysiologically active 1,2,4,-oxa- and thiadiazoles Patent #: 4952587 InventorsAssigneeApplicationNo. 401370 filed on 08/31/1989US Classes:514/342, Ring sulfur in the additional hetero ring514/340, Ring nitrogen in the additional hetero ring (e.g., oxazole, etc.)546/268.7, 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 ClassesC07D 417/04A61K 031/44 Foreign 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. |
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