Peptidyl diflurodiol renin inhibitors
CA 2024698 A1 · Owner: Sham, Hing L. · Inventors: Rosenberg, Saul H.; Sham, Hing L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A renin inhibiting compound of the formula: wherein A is a functional group;, W is (1) C(O)-, (2) -CH(OH)- or, (3) -N(R2)- wherein R2 is hydrogen or loweralkyl; U is, (1) -C(O)-, (2) -CH2- or, (3) -N(R2)- wherein R2 is hydrogen or lower alkyl, with the proviso that when W is -CH(OH)then U is -CH2- and with the proviso that U is -C(O)- or -CH2- when W is -N(R2)-;, V is (1) -CH-, (2) -C(OH)- or, (3) -C(halogen)- with the proviso that V is -CHwhen U is -N(R2)-;, Q is -CH(R1)- or -C(=CHR1a)- wherein R1 is (1) loweralkyl, (2) cycloalkylalkyl, (3) arylalkyl (4) (heterocyclic)alkyl, (5) 1-benzyloxyethyl (6) phenoxy, (7) thiophenoxy or, (8) anilino provided that B is -CH2- or -CH(OH)-, or A is …
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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
- Filed September 5, 1990. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended September 5, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 5, 2012.
- 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
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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.