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Expired Canadian patentCanada

6,7-dimethoxy-1,2,3,4-tetrahydro-1-isoquinoline- acetamide derivatives and a process for the preparation thereof and pharmaceutical compositions containing same

CA 1100971 A · Owner: Chinoin Gyogyszer-Es Vegyeszeti Termekek Gyara Rt · Inventors: Bernath, Gabor; Koltai, Matyas; Kobor, Jeno

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Abstract From the Canadian patent

The invention discloses novel 6,7-dimethoxy- and diethoxy-1,2,3,4tetrahydro-1-isoquinoline derivatives of the general formulae (I), and, (VIII), wherein R1 is hydrogen or benzyloxy-carbonyl R2 is aryl, substituted aryl or, heteroaryl R4 is methyl or ethyl;, and to a process for the preparation thereof. The invention is also directed to pharmaceutical compositions containing these compounds as active ingredient. The compounds of the present invention are effective antiinflammatory 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 May 12, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 12, 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.
FiledJanuary 11, 1978
GrantedMay 12, 1981
Term endedMay 12, 1998
Patent numberCA 1100971 A
Classification (IPC)C07D217/12

Timeline

Timeline From CIPO dates

1979198119831985198719891991199319951997Application filedJan 11, 1978Patent grantedMay 12, 1981Term endedMay 12, 1998

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