Pyrido-pyrido-pyrrolo pyrrolo-indole and pyrido-pyrrolo pyrrolo carbazole derivatives, method for the production thereof and pharmaceutical compositions containing said derivatives
CA 2452192 A1 · Owner: Pfeiffer, Bruno · Inventors: Merour, Jean-Yves; Hickman, John; Routier, Sylvain
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Compounds of formula (I) wherein: W¿I? and W¿2? represent with the carbon atoms to which they are bound a phenyl group or a pyridinyl group, and at least one of the groups W¿1? or W¿2? represent a pyridinyl group; R¿1? and R¿2? each represent a group of formula U-V as defined in the description X and X¿1? each represent a hydrogen atom a hydroxy, alkoxy, mercapto or alkylthio group; Y and Y¿1? each represent a hydrogen atom; or X and Y X¿1? and Y¿1? represent, together with the carbon atom that they include a carbonyl or thiocarbonyl group; R¿4? and R¿5? are as defined in the description; Q¿1? Q¿2? represent a hydrogen atom, or Q¿1? and Q¿2? together with the carbon atoms that they include …
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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 June 28, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 28, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 28, 2024.
- 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.