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Dihydroxypyridopyrazine-1,6-dione compounds useful as hiv integrase inhibitors

CA 2498111 A1 · Owner: Zhuang, Linghang · Inventors: Zhuang, Linghang; Fisher, Thorsten E.; Williams, Peter D.

CIPO record

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Abstract From the Canadian patent

8,9-Dihydroxydihydropyridopyrazine-1,6-diones and 8,9-dihydroxypyridopyrazine- 1,6-diones are inhibitors of HIV integrase and inhibitors of HIV replication. In one embodiment, the pyridopyrazinediones are of Formula (I): (I),wherein R1, R2, R3, R4 and R5 are defined herein. The compounds are useful in the prevention and treatment of infection by HIV and in the prevention delay in , the onset, and treatment of AIDS. The compounds are employed against HIV infection and AIDS as compounds per se or in the form of pharmaceutically acceptable salts. The compounds and their salts can be employed as ingredients in pharmaceutical compositions, optionally in combination with other antivirals, …

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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 10, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended September 10, 2023.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 10, 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.
FiledSeptember 10, 2003
GrantedNo grant recorded
Term endedSeptember 10, 2023
Patent numberCA 2498111 A1
Classification (IPC)C07D471/14 +2 more

Timeline

Timeline From CIPO dates

2004200620082010201220142016201820202022Application filedSep 10, 2003Term endedSep 10, 2023

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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.