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Expired Canadian patentCanada

Anthracycline derivatives and processes for the production thereof

CA 1295326 C · Owner: Umezawa, Sumio · Inventors: Fukatsu, Shunzo; Umezawa, Hamao; Tsuchiya, Tsutomo

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Abstract From the Canadian patent

New anthracycline derivatives and processes for the production thereof, ABSTRACT OF THE DISCLOSURE As the new compounds are now provided 14-0-alkanoic acid esters of 7-0-(2,6-dideoxy-2-fluoro-.alpha.-L-talopyranosyl) adriamycinone, which are useful as antitumor agent and which are improved in their solubility in water and antitumor activity, as compared to 7-0-(2,6-dideoxy-2fluoro-.alpha.-L-talopyranosyl)adriamycinone. Pharmaceutical antitumor composition comprising the new compound as above, and also processes of producing the same compound are provided, too.

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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 February 4, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 4, 2009.
  • 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 2, 1987
GrantedFebruary 4, 1992
Term endedFebruary 4, 2009
Patent numberCA 1295326 C
Classification (IPC)C07H15/25 +1 more

Timeline

Timeline From CIPO dates

19881991199419972000200320062009Application filedDec 2, 1987Patent grantedFeb 4, 1992Term endedFeb 4, 2009

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