Anxiolytic agents with reduced sedative and ataxic effects
CA 2480869 A1 · Owner: Wisys Technology Foundation, Inc. · Inventors: Han, Dongmei; Huang, Qi; Cook, James M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Orally active benzodiazepine derivatives and their salts are disclosed. These compounds and their salts have anxiolytic and anticonvulsant activity with reduced sedative/hypnotic/muscle relaxant/ataxic effects. Compounds of e.g. the following formula (I) are disclosed wherein Y and Z are taken together , with the two intervening carbon atoms to form a ring selected from phenyl and thienyl, which ring is substituted at the C(7) position with at least the substituent -C.ident.C-R where R is H, Si (CH3)3 t-butyl, isopropyl, methyl, or cyclopropyl; R1 is one of H CH3, C2H4N (C2H5)2, CH2CF3, CH2CCH, or an alkyl cyclopropyl; R2is a substituted or unsubstituted at least partially …
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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 28, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 28, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 28, 2025.
- 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.