Echinocandin derivatives, preparation method and application as anti-fungal agents
CA 2311295 A1 · Owner: Hoechst Marion Roussel · Inventors: Courtin, Olivier; Markus, Astrid; Fauveau, Patrick
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention concerns compounds of formula (I) in which: either R1 and R2 = H OH, alkyl optionally substituted, or NR1 forms with the carbon bearing NR1R2 a double bond and R2 is Xra X being O, NH or N-alkyl and Ra being H alkyl optionally substituted; R = a chain containing up to 10 carbon atoms optionally comprising one or several heteroatoms one or several heterocycles; T = H, CH¿2? CH¿2?CONH¿2?, CH¿2?C?N, (CH¿2?)2NH¿2?; Y = H OH, halogen; W = H, OH; Z = H OR CH¿3?. Said products have antifungal properties.
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 December 9, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 9, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 9, 2020.
- 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.