Anthracene derivatives for use as anticancer agent or dye
CA 2172958 A1 · Owner: Napier University Ventures Limited · Inventors: Mincher, David John
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A compound having structural formula (I) where R1 and R2 are independently , hydrogen or hydroxyl R2 and R3 are independently oxo or hydrogen one of R5 , and R6 is A-B and the other is hydrogen hydroxyl, or a group A, wherein the , or each A is independently a spacer group providing -NH- or -CO- in the bond with B (if present), at least one A group does not provide the residue of an .alpha.-amino acid adjacent the anthraquinone nucleus and the A of any A-B moiety is joined to the anthraquinone nucleus via an -NH- bond and the or or , each B is a peptide group; or a physiologically acceptable derivative thereof. The compounds are useful as dyes or anti-tumour compounds. The compounds are …
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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 30, 1994. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended September 30, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 30, 2016.
- 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.