Peptide derivatives having .beta.-secretase inhibitory activity
CA 2515975 C · Owner: Kiso, Yoshiaki · Inventors: Kiso, Yoshiaki
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Provided are excellent .beta.-secretase inhibitors that is, compounds , represented by the general formula (1) or prodrugs thereof: (see formula 1) , wherein A is amino or protected amino; B1 and B2 are each a single bond alkylene of 1 to 3 carbon atoms, or the like; D is a single bond -NHCO, or , the like; E is -COOH, tetrazole ring or the like; n is an integer of 1 to 3; m , is an integer of 1 to 3; G is hydroxyl a group represented by the general , formula (2) or the like:, (see formula 2) , in which Z is -NH -Asp-Ala-NH-, -Asp-Ala-, -Asp-NH-, or the like; L is a 5-to 10-membered ring optionally containing a heteroatom and/or unsaturated bond; X is -COOH, tetrazole ring or the like; Y …
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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 February 27, 2004 and granted February 5, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 27, 2024.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 27, 2026.
- 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.