3,3,3-triarylalkyl-4-phenylalkyl-4-hydroxy piperidines and related compounds
CA 1105466 A · Owner: Searle (G. D.) & Co. · Inventors: Adelstein, Gilbert W.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention encompasses compounds of the formula, and the pharmaceutically acceptable acid addition salts thereof wherein R represents hydrogen, alkanoyl having 1 to 7 carbon atoms, or lower alkyl having 1 to 7 carbon atoms; X and Y represent alkylene having 1 to 3. carbon atoms and Ar, Ar', and Ar" represent phenyl halosubstituted, phenyl, lower alkyl substituted phenyl wherein the lower alkyl contains 1 to 4 carbon atoms; and Ar"' represents phenyl, pyridyl, lower alkyl substituted phenyl wherein the lower alkyl contains 1 to 4 carbon atoms or halosubstituted phenyl. Compounds of the present invention are prepared by reaction of triarylalkanoyl halide with appropriately …
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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 July 21, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 21, 1998.
- 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.