Process for selectively producing 1-phosphorylated sugar derivative anomer and process for producing a nucleoside
CA 2366513 A1 · Owner: Ito, Kiyoshi · Inventors: Asano, Tamotsu; Nakamura, Takeshi; Umetani, Hideki
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A mixture of 1-phosphorylated sugar derivative anomers is phosphorolyzed and isomerized to thereby crystallize one of the anomers. Thus the equilibrium is , shifted and a desired isomer alone is selectively produced. From the 1phosphorylated sugar derivative thus obtained and a base a nucleoside is , produced at a high stereoselectivity and a high yield under the action of a nucleoside phosphorylase. Thus, a process for anomer-selectively producing a 1phosphorylated sugar derivative and a process for producing a nucleoside are provided.
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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 13, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 13, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 13, 2023.
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Timeline
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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.