Substituted thienylethylamines and process for their production
CA 2000399 C · Owner: Mcgarrity, John · Inventors: Warm, Aleksander; Mcgarrity, John
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Novel substituted thienylethylamines of the formula: (IV), wherein R is benzyl, which is ring-substituted by at least one halogen atom, and R1 is lower alkyl, phenyl or substituted phenyl are disclosed. The compounds (IV) are starting products for the production of antithrombolytically effective pharmaceutical agents. A process is also disclosed for the production of the compounds (IV) from substituted enthanolamines by their reaction with a strong base further, reaction of the resultant aziridines with 2-thienyllithium and, conversion of the resultant thienylethylamines with a compound of formula RX, wherein R is as defined above and X is halogen.
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 October 10, 1989 and granted March 25, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 10, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 10, 2011.
- 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.