Substituted acyl dertivatives of 1,2,3,4-tetrahydroisquinoline-3-carboxylic acids
CA 1341330 C · Owner: Warner-Lambert Company · Inventors: Klutchko, Sylvester; Hoefle, Milton L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Substituted acyl derivatives of 1,2,3,4-tetrahydroisoquinoline-3-carboxylic acids and the pharmaceutically acceptable salts thereof are produced by coupling a suitably substituted 1,2,3,4-tetrahydroisoquinoline with a suitably substituted amino acid and when desired hydrolysing or removing protecting groups of the resulting product. The compounds of the invention, their salts and.pharmaceutical compositions thereof are useful as antihypertensive agents.
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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
- Granted January 1, 2002. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 1, 2019.
- 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.