3-aryl oxazolidinone derivatives, a method of preparing them and therapeutic use thereof
CA 2065962 A1 · Owner: Delalande S.A. · Inventors: Koenig, Jean-Jacques; Rovei, Vincenzo; Jarreau, Francois-Xavier
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
42-, Title: "3-aryl oxazolidinone derivatives a method, of preparing them and therapeutic use thereof", Inventors: Francois-Xavier JARREAU Jean-Jacques KOENIG, Vincenzo ROVEI, Applicants: DELALANDE S.A. (sociéhé anorlyme) A B S T R A C T, Derivatives having the formula: (I), where R1 denotes C1-C4 alkyl; X denotes oxygen or methylene; R2 denotes C1-C4 alkyl or CF3; R3 denotes a CH2R4 group in which R4 is (i) a pentagonal or hexagonal aromatic heterocyclic group comprising one or two nitrogen atoms and optionally fused with a benzene ring or (ii) a group having the formula -43-, where n = 0 or 1, and R5 and R6 independently denote C1-C4 alkyl or benzyl, and R5 and R6 also together, with the …
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 April 14, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 14, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 14, 2014.
- 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.