Process for the preparation of cpla2 inhibitors
CA 2528174 C · Owner: Raveendranath, Panolil · Inventors: Wu, Yanzhong; Raveendranath, Panolil
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process for making a compound of formula (I) in which process the compound HC.ident.C-(CH2)n-NH2 is reacted with the compound R1-SO2Cl to produce an intermediate compound, which intermediate compound is then reacted with the compound of formula (II) to produce the compound of formula (I). The terms R1 R2, R3, R4 and n have the definitions set forth in the claims. The compounds of formula (I) are useful in the preparation of indole derivatives of formula (V) which are cPLA2 inhibitors.
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 July 19, 2004 and granted March 13, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 19, 2024.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 19, 2026.
- 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.