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Expired Canadian patentCanada

Quinolyloxazole-2-ones useful as proteinkinase c inhibitors

CA 2000804 C · Owner: Cheng, Hsien Chang · Inventors: Dage, Richard Cyrus; Claxton, George Philip; Robinson, Phillip James

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Abstract From the Canadian patent

This invention relates to novel quinolyloxazole-2-ones of the formula:, (see fig. I), wherein R and R1 are each independently selected from the group consisting of hydrogen, C1-C6 alkyl, and C1-C3 alkylphenyl wherein the phenyl ring is optionally substituted with one two or three of the substituents selected from the group consisting of fluorine, chlorine, bromine C1-C4 alkyl, and, C1-C4 alkoxy; and R2 is a 2- 3-, or 4-quinolyl group, optionally, substituted with one two or three of the substituents, selected from the group consisting of fluorine chlorine, bromine, C1-C4 alkyl, C1-C4 alkoxy nitro and trifluoromethyl, or R2 is a 5- 6-, 7-, or 8-quinolyl group;, which are useful as protein …

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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 16, 1989 and granted April 6, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 16, 2009.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 16, 2011.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledOctober 16, 1989
GrantedApril 6, 1999
Term endedOctober 16, 2009
Patent numberCA 2000804 C
Classification (IPC)C07D215/14 +2 more

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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.