Esters of 5-aminolevulinic acid as photosensitizing agents in photochemotherapy
CA 2416307 C · Owner: Klaveness, Jo · Inventors: Nilsen, Nils Olav; Godal, Aslak; Klaveness, Jo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention provides compounds for use in photochemotherapy or diagnosis said , compounds being branched alkyl esters or substituted alkyl esters of 5aminolevulinic acid, or derivatives or pharmaceutically acceptable salts thereof. In particular the invention , provides compounds of formula (I): R2 2N-CH2COCH2-CH2CO-OR1 (wherein R1 represents an , a C1 or C2 alkyl group substituted by one or more aryl groups or monocyclic 5- 7 membered , heteroaromatic groups, wherein the aryl and the heteroaromatic groups are optionally , substituted; and R2 represents a hydrogen atom; and pharmaceutically acceptable salts thereof , for use in diagnosis and photochemotherapy of disorders of …
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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.
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- Filed July 25, 2001 and granted January 22, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 25, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 25, 2023.
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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.