Carbapenem antibacterial compounds, compositions containing such compounds and methods of treatment
CA 2264147 A1 · Owner: Ratcliffe, Ronald W. · Inventors: Blizzard, Timothy A.; Ratcliffe, Ronald W.; Wilkening, Robert R.
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 carbapenem antibacterial agents in which the carbapenem nucleus is substituted at the 2-position with a sulfonamide containing ring system linked to the carbapenem nucleus through a CH2 group. The compounds are represented by formula (I) including pharmaceutically acceptable salts thereof, wherein: R1 represents H or methyl; CO2M represents a carboxylic acid, a carboxylate anion a pharmaceutically acceptable ester , group or a carboxylic acid protected by a protecting group; P represents hydrogen, hydroxyl, F or hydroxyl protected by a hydroxyl-protecting group; X1 and X2 represent hydrogen or X1 and X2 taken together represent a carbonyl group; and …
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 September 8, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended September 8, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 8, 2019.
- 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.