Pyrrolo3,2-cquinoline derivatives containing haloalkoxy group and pharmaceutically acceptable salts thereof
CA 2268166 C · Owner: Choi, Joong-Kwon · Inventors: Yum, Eul-Kyun; Yoo, Yea-Kang; Kang, Seung-Kyu
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to a novel pyrrolo3,2-cquinoline derivatives containing haloalkoxy group, represented by Formula (I) their pharmaceutically acceptable salts; process for preparation thereof; and pharmaceutical composition thereof for treating gastric ulcer. In said Formula R1 is haloatkoxy group of C1-C6 including trifluoromethoxy difluoromethoxy and trifluoroethoxy group. R2 and R3 which are, the same or different, are each hydrogen halogen hydroxy, benzyloxy, alkyl , group of C1-C6 alkoxy group of C1-C6. A is -CH2-CH2- or -CH=CH-, and R4 is hydrogen, halogen amino alkylamino group of C1-C6 and , NH(CH2)n OH in which n is 1-6. Pyrrolo3,2-cquinoline derivatives having …
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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 January 8, 1998 and granted May 6, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 8, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 8, 2020.
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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.