2-amino-bicyclo3.1.0hexane-2,6-dicarboxylic acid derivatives and a process for preparation thereof
CA 2281272 C · Owner: F. Hoffmann-La Roche Ag · Inventors: Stadler, Heinz; Woltering, Thomas Johannes; Mutel, Vincent
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 the compound of formulae (see formula I-A)(see formula I-B)(see formula I-C) and to a novel process for the manufacture of compounds of the general formula (see formula I) , wherein, T is tritium; R1 is hydroxy, lower alkoxy, lower alkenyloxy benzyloxy, hydrogen, deuterium , or , tritium; R11 is hydrogen, deuterium or optionally tritium hydroxy or amino and , R2 is hydrogen or optionally tritium or R1 and R2 form a bond. Compounds of general formula I are ligands for the metabotropic glutamate receptors of group II.
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 August 31, 1999 and granted January 4, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 31, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 31, 2021.
- 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.