Processes and intermediates useful in preparing .beta.3-adrenergic receptor agonists
CA 2471646 A1 · Owner: Wong, John Wing · Inventors: Dugger, Robert Wayne; Tao, Yong; Chambers, Robert James
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention provides processes useful in the preparation of certain .beta.3-adrenergic receptor agonists of structural formula (I) the pharmaceutically acceptable salts thereof and the hydrates of said , pharmaceutically acceptable salts wherein HET is as described herein. The invention further provides intermediates useful in the preparation of such agonists, and processes useful in the production of such intermediates.
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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 February 17, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 17, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 17, 2025.
- 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
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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.