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Expired Canadian patentCanada

Optically active 2-chloro-12-(3-dimethylamino-2- methylpropyl)-12h-dibenzo ¬d,g ¬1,3,6 dioxazocines and a process for the preparation thereof

CA 1291133 C · Owner: Gigler, Gabor · Inventors: Gigler, Gabor; Rozsa, Laszlo; Petocz, Lujza

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Abstract From the Canadian patent

OPTICALLY ACTIVE 2-CHLORO-12-(3-DIMETHYLAMIMO-2-METHYL- PROPYL)-12H-DIBENZOd,g1,3,6DIOXAZOCINES AND A PROCESS FOR THE PREPARATION THEREOF, A b s t r a c t The invention relates to optically active 2- -chloro-12-(3-dimethylamino-2-methylprcpyl)-12H-dibenzo- d,g 1,3 9 6dioxazocines of the formula (I), and pharmaceutically acceptable acid addition salts thereof. The enantiomers are especialiy active against Parkinson's disease. The optically active enantlomers are prepared by a) resolving the racemic 2-chloro-12-(3-dimethylamino-2-methylprcpyl)-12H-dibenzod,g1,3,6 dioxazocine with an optically active organic acid and separating the enantiomers; or b) dissolving the racemic …

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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 22, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 22, 2008.
  • 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 19, 1986
GrantedOctober 22, 1991
Term endedOctober 22, 2008
Patent numberCA 1291133 C
Classification (IPC)C07D273/01 +2 more

Timeline

Timeline From CIPO dates

19871990199319961999200220052008Application filedDec 19, 1986Patent grantedOct 22, 1991Term endedOct 22, 2008

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