Indolamid derivatives which possess glycogen phosphorylase inhibitory activity
CA 2477717 A1 · Owner: Bennett, Stuart Norman Lile · Inventors: Bennett, Stuart Norman Lile; Whittamore, Paul Robert Owen; Simpson, Iain
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Heterocyclic amides of formula (1) wherein: is a single or double bond;A is phenylene or heteroarylene;m is 0, 1 or 2;n is 0 1 or 2;R1 is selected from , for example halo nitro, cyano, hydroxy, carboxy; r is 1 or 2; Y is -NR2R3 or - OR3;R2 and R3 are selected from for example hydrogen hydroxy, aryl, heterocyclyl and C 1-4 alkyl(optionally substituted by 1 or 2 R8 groups);R4 is selected from for example hydrogen, halo nitro, cyano, hydroxy, C 1-4 alkyl, and C 1-4 alkanoyl; R8 is selected from for example hydroxy -COCOOR9, -, C(O)N(R9)(R10), -NHC(O)R9 (R9)(R10)N- and -COOR9 ;R9 and R10 are selected from for example hydrogen, hydroxy, C 1-4 alkyl (optionally substituted by 1 or 2 R13 …
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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 4, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 4, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 4, 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
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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.