3,9-diazabicyclo (3.3.1) nonan-7-yl derivatives, process and intermediates for their preparation and pharmaceutical compositions containing them
CA 2092431 C · Owner: Beecham Group P.L.C. · Inventors: King, Francis D.; Gregory, Julian A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Compounds of formula (I) wherein X is a phenyl group or a monocyclic 5 or 6 membered heteroaryl group, either of which group is optionally fused to a saturated or unsaturated 5-7 membered carbocyclic or heterocyclic ring; A is linking moiety; Z is C1-6 alkyl, C3-8 cycloalkyl, C3-8 cycloalkyl C1-4 alkyl phenyl, naphthyl, phenyl C1-4 alkyl or naphthyl C1-4 alkyl wherein a phenyl or naphthyl moiety is optionally substituted by one or more of halo C1-, 6 alkoxy or C1-6 alkyl; R is hydrogen or methyl having 5-HT3 receptor antagonist activity.
Read the whole patent
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
- Filed September 23, 1991 and granted December 10, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 23, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 23, 2013.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.