7,8 and 9-substituted tetracycline compounds
CA 2415086 A1 · Owner: Trustees Of Tufts College · Inventors: Nelson, Mark L.; Koza, Darrell
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
7,8 and 9-substituted tetracyline compounds of the formula (I) wherein: R?4¿ and R?4'¿ are each methyl; R?5¿ is hydrogen or hydroxyl; R?6¿ and R?6'¿ are each independently hydrogen methyl, or hydroxyl; R?7¿ is hydrogen, lower alkenyl lower alkynyl, phenyl, halophenyl, acyl phenylalkynyl, heteroaryl, or dimethylamino; and R?8¿ is hydrogen phenyl, nitrophenyl, halo, or lower alkynyl; and R?9¿ is hydrogen amino, acetamide, or lower alkynyl; and provided that at least one of R?7¿ R?8¿, or R?9¿ is not hydrogen, methods of treating tretracycline responsive states and pharmaceutical compositions containing the 7 8 and 9-substituted tetracycline compounds are described.
Read the whole patent
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 29, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 29, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 29, 2023.
- 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.