Bicyclic and tricyclic heteroaromatic compounds
CA 2388593 A1 · Owner: Hutchison, Alan · Inventors: Hutchison, Alan; Albaugh, Pamela; Shaw, Kenneth
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Disclosed are compounds of formula (I) and the pharmaceutically acceptable salts thereof, wherein W, Q, X, X1, Y and Z are as defined herein. These compounds bind with high selectivity and/or high affinity to the benzodiazepine site of GABAA receptors and re therefore useful in the treatment of central nervous system (CNS) diseases and as probes for the localization of GABAA receptors in tissue samples. Also disclosed are intermediates useful in the preparation of these compounds.
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 November 10, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 10, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 10, 2022.
- 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.