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Expired Canadian patentCanada

Pyrrolo ¬1,2-b ¬1,2,5 triazepines, a process and intermediates for their preparation and their use as medicaments

CA 1262904 C · Owner: Effland, Richard C. · Inventors: Effland, Richard C.; Klein, Joseph T.; Hamer, R. Richard L.

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Abstract From the Canadian patent

The invention relates to compounds having the general formula II, (II), where R is hydrogen, loweralkyl loweralkylaminoloweralkyl or, diloweralkylaminloweralkyl X is hydrogen, halogen, lower alkyl, triflouromethyl or nitro; Y is hydrogen halogen or loweralkyl;, and R1 is hydrogen , or, and processes for preparing the compounds. Many of the compounds of the formula II are useful as intermediates for synthesizing compounds of the formula I (I), where R, X and Y are defined above. Compounds of the formulae I and II are useful as analgesic, anxiolytic and/or anticonvulsant agents. The invention also relates to compounds of the formula III, III, wherein X and Y are as defined above and …

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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 November 14, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 14, 2006.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJune 28, 1985
GrantedNovember 14, 1989
Term endedNovember 14, 2006
Patent numberCA 1262904 C
Classification (IPC)C07D207/50 +2 more

Timeline

Timeline From CIPO dates

1986198919921995199820012004Application filedJune 28, 1985Patent grantedNov 14, 1989Term endedNov 14, 2006

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