6,7-dihydro-5h-pyrazolo1,2-apyrazol-1-ones which control inflammatory cytokines
CA 2461073 A1 · Owner: Djung, Jane Far-Jine · Inventors: De, Biswanath; Laufersweiler, Matthew John; Clark, Michael Phillip
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to compound which are capable of preventing the extracellular release of inflammatory cytokines said compounds, including all , enantiomeric and diasteriomeric forms and pharmaceutically acceptable salts thereof, have the formula (I): wherein R comprises ethers or amines; R1 is: a) substituted or unsubstituted aryl; or b) substituted or unsubstituted heteroaryl; each R2 unit is independently selected from the group consisting of: a) hydrogen; b) -(CH2)jO(CH2)nR8; c) -(CH2)jNR9aR9b; d) -(CH2)jCO2R10; e) - (CH2)jOCO2R10 f) -(CH2)jCON(R10)2 g) -(CH2)jOCON(R10)2; h) two R2 units can be taken together to form a carbonyl unit; i) and mixtures thereof; R8 R9a, …
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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 September 20, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended September 20, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 20, 2024.
- 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.