Bis-(1h-indol-3-yl)-maleinimide derivatives and their use as pharmaceuticals
CA 2015996 C · Owner: Barth, Hubert · Inventors: Barth, Hubert; Betche, Hans-Jurgen; Schachtele, Christoph
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention provides bis-(1H-indol-3-yl)maleinimide derivatives and the pharmacologically acceptable salts thereof, processes for the preparation of these compounds and pharmaceutical compositions containing them for the treatment of heart and blood vessel diseases such as, thromboses, arteriosclerosis, hypertension of inflammatory processes, allergies, cancer and certain degenerative damages of the central nervous system, as well as of diseases of the immune system and viral diseases. The maleinimide derivatives of the invention are of formula I, and an example is the compound in which R1 is methyl and R2 R4, R5, R8 and R9 are each hydrogen.
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 May 3, 1990 and granted August 28, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 3, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 3, 2012.
- 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.