4-indole derivatives as serotonin agonists and antagonists
CA 2194984 C · Owner: Macor, John Eugene · Inventors: Macor, John Eugene
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to compounds of formula (I) wherein X is oxygen or (Ia); R1 is a group of formula (II, III IV or V); the compounds of formula , (I) and the pharmaceutically acceptable salts thereof are useful psychotherapeutics and are potent serotonin (5-HT1) agonists and antagonists and may be used in the treatment of depression anxiety, eating disorders, obesity, drug abuse cluster headache, migraine, chronic paroxysmal hemicrania and headache associated with vascular disorders pain, and other disorders , arising from insufficient or deficient serotonergic neurotransmission. The compounds can also be used as centrally acting antihypertensives and vasodilators.
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 8, 1995 and granted July 2, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 8, 2015.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 8, 2017.
- 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.