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Expired Canadian patentCanada

1,4-disubstituted piperidinyl compounds, pharmaceutical compositions thereof, and their methods of preparation

CA 1322007 C · Owner: Merrell Dow Pharmaceuticals Inc. · Inventors: Dage, Richard C.; Li, Tung; Miller, Francis P.

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Abstract From the Canadian patent

The present invention pertains to a new class of compounds which can be characterized as 1,4-disubstituted piperidinyl compounds of the formula:, wherein Y is H CO(CH2)nCH3, or SO2(CH2)nCH3 in which n is an integer from 0 to 3; X is CO, CHOH, or C=N-O- A, wherein A is hydrogen or a C1-4 alkyl; R is either selected from the group consisting of halogens, lower alkyl groups, lower alkoxy groups and hydrogen or R is a divalent substituent and is a 3,4-methylenedioxy or a 3,4-ethylenedioxy substituent; and m is an integer from 1 to 5; or a pharmaceutically acceptable acid addition salt thereof. These compounds are useful as antiarrhythmics, analgesics, and serotonin 5HT2 antagonists.

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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 September 7, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 7, 2010.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledDecember 16, 1988
GrantedSeptember 7, 1993
Term endedSeptember 7, 2010
Patent numberCA 1322007 C
Classification (IPC)C07D211/18 +2 more

Timeline

Timeline From CIPO dates

19891992199519982001200420072010Application filedDec 16, 1988Patent grantedSep 7, 1993Term endedSep 7, 2010

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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.