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Expired Canadian patentCanada

Aristeromycin/adenosine derivatives

CA 1315779 C · Owner: Prakash, Nellikunja J. · Inventors: Jarvi, Esa T.; Mccarthy, James R.; Prakash, Nellikunja J.

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Abstract From the Canadian patent

This invention relates to an aristeromycin/adenosine derivative of the formula, wherein, V is oxy or methylene X1 and X2 are each independently hydrogen or halogen with the proviso that at least one of X1 and X2 is always a halogen atom, A1 and A2 are each independently hydrogen halogen, or hydroxy with the provisos that where A1 is hydroxy, A2 is hydrogen, and that where A2 is hydroxy, A1 is hydrogen, Y1 is nitrogen a CH group, a CCl group, a CBr group, or a CNH2 group Y2 and Y3 are each independently nitrogen or a CH group, Q is NH2, NHOH, NHCH3, or hydrogen and, Z is hydrogen, halogen, or NH2;, or a pharmaceutically acceptable salt thereof which are, useful in inhibiting AdoMet-dependent …

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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 April 6, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 6, 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.
FiledAugust 22, 1988
GrantedApril 6, 1993
Term endedApril 6, 2010
Patent numberCA 1315779 C
Classification (IPC)C07D473/00 +2 more

Timeline

Timeline From CIPO dates

19891992199519982001200420072010Application filedAug 22, 1988Patent grantedApril 6, 1993Term endedApril 6, 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.