Tricyclic compounds having activity as ras-fpt inhibitors
CA 2267800 C · Owner: Kelly, Joseph M. · Inventors: Kelly, Joseph M.; Weinstein, Jay; Rosenblum, Stuart
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Compounds of formula (I), wherein: X1 is hydrogen halogen, CF3, nitro, NH2 or lower alkyl; each X2 is independently selected from the group consisting of hydrogen, halogen, lower alkoxy and lower alkyl; n is 1 or 2; Y is selected from the group consisting of S(O)p O, and, NR5, wherein p is 0, 1 or 2, and R5 is hydrogen alkyl, aryl, cycloalkyl, loweralkoxycarbonyl aminocarbonyl or acyl; R1 and R2, which may be the same or different, are selected from the group consisting of hydrogen and lower alkyl groups, or taken together can form an oxygen atom when Y is NR5; A(See Formula I) is C=, CH- or N-; R is -CZ-Y1-Y2-R3 wherein: Z is, O, =CH-CN, or =N-CN; one of Y1 and Y2 is a bond -CO-, O, S, or, …
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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 October 7, 1997 and granted December 23, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 7, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 7, 2019.
- 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.