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Expired Canadian patentCanada

Process for preparing new n.sub.1-acyl-3-amino-1,2,3, 4-tetrahydroquinoline compounds

CA 1195331 A · Owner: Simes Societa Italiana Medicinali E Sintetici S.P.A. · Inventors: Mussini, Emilio; Vecchietti, Vittorio; Ferrari, Giorgio

CIPO record

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Abstract From the Canadian patent

This invention relates to new tetrahydroquinoline compounds of the general formula (I): (I), wherein R1 is selected from the group comprising a straight or branched chain alkyl having from 1 to 20 carbon atoms, cycloalkyl having from 3 to 6 carbon atoms, phenyl, phenyl substituted by halogen atom, phenyl C1-6 alkyl, phenyl C1-6 alkenyl, pyridyl, and pyridyl substituted by one or two halogen atoms;, R2 and R3 are the same or different and each is selected from the group comprising hydrogen atom, hydroxy and alkoxy having from 1 to 6 carbon atoms, provided that at least one of R2 or R3 is different from hydrogen;, R4, R5 R6 and R7 are the same or different and each is selected from the group …

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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 October 15, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 15, 2002.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJuly 27, 1982
GrantedOctober 15, 1985
Term endedOctober 15, 2002
Patent numberCA 1195331 A
Classification (IPC)C07D215/38 +2 more

Timeline

Timeline From CIPO dates

1983198519871989199119931995199719992001Application filedJuly 27, 1982Patent grantedOct 15, 1985Term endedOct 15, 2002

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