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Expired Canadian patentCanada

Aromatic and heterocyclic carboxamide derivatives as antineoplastic agents

CA 1328871 C · Owner: Fliri, Anton Franz Josef · Inventors: Fliri, Anton Franz Josef; Schnur, Rodney Caughren

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Abstract From the Canadian patent

Acyl derivatives of 2-aminobenzothiazole and alkylated analogs of the formula:, ---I, ---II, ---III or, ---IV, (wherein X is alkyl, hydrogen alkoxy, alkylthio, alkylsulfinyl, alkylsulfonyl nitro, trifluoromethyl, carbamyl, N,N-dialkylcarbamyl phenyl, fluorophenyl, methoxy-, phenyl hydroxyphenyl, cyano, cyclohexyl or hydroxyalkyl;, Y is hydrogen, alkyl, alkoxy, F or C1; W is hydrogen, alkoxy, cyano, F, C1 or Br; X and Y together may form a benzo or tetrahydrobenzo ring;, Z is hydrogen, F, C1, Br or alkyl; R is a substituent of the formula:, -(Q)-(CH2)pNR4R5 where n is an integer of 0 to 2;, m is an integer of 0 to 1; R3, R4 and R5 are each hydrgoen alkyl; Q is CH2, O, NR4 or S;, p is an …

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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 26, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 26, 2011.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMay 23, 1989
GrantedApril 26, 1994
Term endedApril 26, 2011
Patent numberCA 1328871 C
Classification (IPC)C07D277/82 +2 more

Timeline

Timeline From CIPO dates

19901993199619992002200520082011Application filedMay 23, 1989Patent grantedApril 26, 1994Term endedApril 26, 2011

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