Imidazole compounds as histamine h3 ligands
CA 2362319 A1 · Owner: Tom, Wing C. · Inventors: Tom, Wing C.; Piwinski, John J.; Vaccaro, Wayne D.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention discloses a compound having general formula depicted in Formula (I), wherein G is a spacer moiety selected from the group consisting of C1-C7 alkyl, C2-C7 alkenyl, C2-C7 alkynyl, C1-C7 alkyl-NHCOand -SO2-, T is a six-, membered ring or a seven-membered ring containing two ring nitrogens and belonging to formula (a), with said T ring being c onnected to said G moiety at either a ring carbon atom of ring T or a ring nitrogen atom of ring T: wherein n is 1 or 2. These compounds have excellent histamine-H3 receptor antagonist activity.
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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 March 6, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 6, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 6, 2022.
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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.