5-h-pyrrolo3,2-dpyrimidine inhibitors of nucleoside phosphorylases and nucleosidases
CA 2496698 C · Owner: Furneaux, Richard Hurbert · Inventors: Schramm, Vern L.; Furneaux, Richard Hurbert; Tyler, Peter Charles
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to compounds of the general formula (I): (see formula I) , wherein:, V is selected from CH2 and NH and W is selected from NR1 and NR2; , or V is selected from NR1 and NR2 and W is selected from CH2 and , NH;, X is selected from CH2 and CHOH in the R or S-configuration; Y is selected from hydrogen, halogen and hydroxy except where V is , selected from NH, NR1 and NR2 then Y is hydrogen; Z is selected from hydrogen, halogen, hydroxy SQ, OQ and Q, where , Q is an alkyl, aralkyl or aryl group; R1 is a radical of the formula (II), (see formula II) R2 is a radical of the formula (III), (see formula III) A is selected from N, CH and CR, where R is selected from …
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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 August 21, 2003 and granted January 24, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 21, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 21, 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
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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.