Novel 6 or 7 substituted analogues of swainsonine, processes for their preparation and their use as therapeutic agents
CA 2268114 A1 · Owner: Shah, Rajan · Inventors: Shah, Rajan; Pearson, William; Tropper, Francois D.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to 6 or 7 substituted swainsonine analogues. In formula (I): (a) R1, R3 and R5 are the same or different and represent hydrogen alkyl, or aryl; (b) R2, R4 and R6 represent hydroxyl or alkoxy; and one of Y and Y'represents hydroxyl, alkyl, cycloalkyl alkenyl, alkynyl, unsaturated , monocyclic hydrocarbon aryl, alkoxy, or aryloxy, and the other of Y and Y' represents hydrogen, and Z and Z' represent hydrogen; or one of Z and Z' , represents alkyl, cycloalkyl alkenyl, alkynyl, unsaturated monocyclic hydrocarbon, aryl, alkoxy, or aryloxy and the other of Z and Z' represents hydrogen, and Y and Y' represent hydrogen and their use in stimulating the , immune system …
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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 October 3, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 3, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 3, 2019.
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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.