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Expired Canadian patentCanada

Alkylamides of carboxyalkanoyl peptides

CA 1238902 A · Owner: Spofa, Spojene Podniky Pro Zdravotnickou Vyrobu · Inventors: Kasafirek, Evzen; Slaby, Jan; Fric, Premysl

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Abstract From the Canadian patent

The invention is related to alkylamides of carboxyalkanoyl peptides, novel compounds with notable inhibition of elastase, of general formula wherein R is alkyl having 1 to 5 carbon atoms or aralkyl namely phenylethyl, A is a residue of peptidically bound proline or alanine, B is straight bond or a residue of peptidically bound proline or alanine, and X is a methylene chain having 1 to 3 carbon atoms or the -CH=CHgroup. The invention is related to a process for producing the novel compounds mentioned as well. The results of pharmacologic testing of these compounds allow to expect the possibility of their pharmacotherapeutic application.

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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 July 5, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 5, 2005.
  • 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 5, 1982
GrantedJuly 5, 1988
Term endedJuly 5, 2005
Patent numberCA 1238902 A
Classification (IPC)C07K5/04 +2 more

Timeline

Timeline From CIPO dates

19831986198919921995199820012004Application filedAug 5, 1982Patent grantedJuly 5, 1988Term endedJuly 5, 2005

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