1-carba (dethia) cephalosporin 3-triflate ester antibiotics
CA 1305964 C · Owner: Sjogren, Eric Brian · Inventors: Evans, David Albert; Sjogren, Eric Brian
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
7.beta.-Acylamino-3-trifluoromethylsulfonyloxy-1carba-3-cephem-4-carboxylic acid antibiotic compounds esters and salts thereof, and the corresponding 7-amino and protected 7-amino 1-carbacephalosporins are provided. The 3-trifluoromethylsulfonyloxy-substituted 1-carbacephalosporins also are useful in a process for preparing 3-halo-1-carbacephalosporins which comprises displacing the 3-trifluoromethylsulfonyloxy ester group with halide ion in an aprotic polar solvent. These antibiotic compounds are useful in the treatment of infectious diseases in man and animals and the 1carbacephalosporin compounds particularly have enhanced potency against infectious and resistant microorganisms.
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
- Granted August 4, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 4, 2009.
- 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.