Non-nucleoside reverse transcriptase inhibitors
CA 2501924 A1 · Owner: Antonov, Dmitry · Inventors: Lindstroem, Stefan; Sund, Christian; Antonov, Dmitry
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A compound of the formula (Y): where; R1 is O S; R2 is a nitrogen-containing , heterocycle; R3 is H Cl-C3 alkyl; X is -(CR8R8')n-D-(CR8R8')m-; D is a bond -, NR9-, -O-, -S-, -S(=O)- or -S(=O)2-; n and m are independently 0 1 or 2, R8 , and R8' are independently H C1-C3 alkyl, haloC1-C3alkyl, hydroxy, or R8 and R8' together with their adjacent C atom is -C(=O)-; R9 is independently H C1-, C3 alkyl; E is CH2-, -CHOH-, -C(=O)- -NR9-, -O-, -S-, -S(=O)2-; n and m are independently 0, 1 or 2; p and q are independently 0 1 or 2, where p+q <= 2; , R10 is an optionally substituted carbocycle or heterocycle; R11 is independently H, C1-C3 alkyl, halo substituted Cl-C3alkyl hydroxy; have , utility …
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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 September 5, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended September 5, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 5, 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.