Process for the preparation of 1-(2-tetrahydrofuryl)- 5-fluorouracil
CA 1114376 A · Owner: Mitsui Toatsu Kagaku Kabushiki Kaisha (Mitsui Toatsu Chem. Inc.) · Inventors: Yokoyama, Tatsuro; Kojima, Atsushi; Kohno, Yoshitsugu
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the Disclosure:, A process for efficiently preparing 1-(2-tetrahydrofuryl)- 5-fluorouracil useful as an antitumor agent or an antiviral agent which comprises reacting 5-fluorouracil with 2,3-dihydrofuran. This reaction proceeds advantageously in the presence of a reacti accelerator such as a Lewis acid in a polar solvent such as pyridine.
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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
- Granted December 15, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 15, 1998.
- 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
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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.