C-4 carbonate taxanes
CA 2399116 A1 · Owner: Kadow, John F. · Inventors: Zoeckler, Mary Edson; Tarrant, James G.; Xue, Qiufen May
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention concerns novel taxane derivatives their use as , antitumor agents, and pharmaceutical formulations. The invention claims compounds of formula (I) and the use of compounds of formula (I) or pharmaceutical salts thereof as oral drugs for the treatment of human or veterinary disease, in which: R is phenyl isopropyl, or tert butyl; R1 is -, C(O)RZ in which RZ is (CH3)3CO- (CH3)3CCH2-, CH3(CH2)3O-, cyclobutyl-, cyclohexyloxy or (2-furyl); R2 is CH3C(O)O-.
Read the whole patent
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 November 16, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 16, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 16, 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.