4,5,6,7-tetrahydroindazole derivatives as antitumor agents
CA 2372429 A1 · Owner: Varasi, Mario · Inventors: Isacchi, Antonella; Pevarello, Paolo; Varasi, Mario
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Compounds which are 4,5,6,7-tetrahydroindazole derivative formula (I) wherein , the dotted line (x) represents a single or double bond; n is 0 or 1; R1 R2 , and R3 have the meanings reported in the description; Ra R'a, Rb, R'b, Rc, R'c have the meanings reported in the description also comprising that Ra and , Rb together and/or Ra and Rc together form a N-alkyl-piperydinyl ring with 1 to 6 carbon atoms in the alkyl chain or a phenyl ring; or pharmaceutically acceptable salts thereof, are useful for treating cell proliferative disorders and Alzheimer's disease.
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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 May 4, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 4, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 4, 2022.
- 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.