2',3'-dideoxy-4'-thioribonucleosides as antiviral agents
CA 2080916 A1 · Owner: Secrist, John A. Iii · Inventors: Montgomery, John A.; Secrist, John A. Iii
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
2080916 9116333 PCTABS00007, 2',3'-dideoxy-4'-thioribonucleosides useful as antiviral agents in the treatment and prevention of AIDS are disclosed. In accordance with one aspect of the invention there are provided compounds of formula (I), where X = H, N3 or F, and B is a member selected from the group consisting of pyrimidine 5-azapyrimidine, 6-azapyrimidine, 3-deazapyrimidine purine, 3-deazapurine, 7-deazapurine, 8-azapurine and 2-azapurine bases. The intermediate 1-0-acetyl-5-0-t-butyldiphenylsilyl-4-thio-2,3-dideoxyribofuranose useful in the production of certain of the, 2',3'-dideoxy-4'-thioribonucleosides is also disclosed.
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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 April 19, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 19, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 19, 2013.
- 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.