2-pyridyl and 2-pyrimidyl cycloalkylene amide compounds as nr2b receptor antagonists
CA 2510322 A1 · Owner: Shimokawa, Hirohisa · Inventors: Shimokawa, Hirohisa; Nakamura, Hiroshi; Kawai, Makoto
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention provides a compound of the Formula (I) wherein R1 represents , Formula (II), wherein R5 represents a hydroxy group or the like; R6 represents a hydrogen atom or the like. Z represents a carbon or a nitrogen atom: R2 represents a hydrogen atom or the like: R3 represents a hydrogen or the like: A represents a cycloalkylene or the like: X represents a covalent bond or the like: R4 represents an aryl or the like. These compounds are useful for the treatment of disease conditions caused by overactivation of NMDA NR2B receptor such as pain, or the like in mammals. This invention also provides a pharmaceutical composition comprising the above compound.
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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 December 5, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 5, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 5, 2025.
- 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
Timeline From CIPO dates
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.