3-amidoindolyl derivatives
CA 2054339 C · Owner: Baron, Bruce M. · Inventors: Baron, Bruce M.; Salituro, Francesco G.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention is directed to a new class of 3amido and 3-sulfamido-indolyl NMDA antagonists of the formula:, (see formula Ia, Ib, Ic), wherein Z is represented by H C1-C4 alkyl, phenyl, substituted phenyl or an alkylphenyl sub-, stituent in which the phenyl ring may be optionally substituted;, R is represented by hydrogen halogen, C1-C4, alkyl. C1-C4 alkoxy, CF3 OCF3, OH, NO2, or, CN;, B is represented by hydrogen C1-C4 alkyl, op-, tionally substituted alkylphenyl or -CH2-, COR2:, X is represented by CO or SO2; and A and R1 are variously defined. These compounds are useful in the treatment of a number of disease states such as epilepsy, neurodegenerative diseases, anxiety and …
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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 28, 1991 and granted December 24, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 28, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 28, 2013.
- 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.