Compounds
CA 2087651 A1 · Owner: Pettersen, Erik Olai · Inventors: Oftebro, Reidar; Dornish, John Michael; Larsen, Rolf Olaf
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
New compounds of formula I:, (I) wherein, Y may be CN or , wherein A may be H D, alkyl with 1-4, carbon atoms, OR wherein R is H or alkyl with 1-4 carbon atoms, or-NR1R2 or-CR1R2R3 wherein R1, R2 and R3 are the same or different and are H or alkyl with 1-4 carbon atoms; Z is H, D, Y or alkyl with 1-4 C-atoms halogen, nitro, amino, monoalkyl amino or dialkyl amino wherein the alkyl groups have 1-4 C atoms, or-OR wherein R may be H or alkyl with 1-4 C-atoms, or-CR4R5R6 wherein R4 R5 and R6 may be the same or different and may be H or F;, and pharmaceutically acceptable salts thereof. are useful as anti-cancer agents or as intermediates for preparing anti-cancer agents.
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 January 20, 1993. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 20, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 20, 2015.
- 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.