2'-methylidenepyrimidine nucleoside compounds, their use and method for production thereof
CA 1319685 C · Owner: Matsuda, Akira · Inventors: Yamagami, Keiji; Matsuda, Akira; Ueda, Tohru
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
27103-38, ABSTRACT, 2'-Methylidenepyrimidine nucleoside compounds of the general formula:, (wherein Rl is amino or hydroxyl group; R2 is a halogen or a lower alkyl when Rl is amino or R2 is an alkyl having 2 to 4 carbon atoms, an alkynyl having 2 to 4 carbon atoms or a haloalkyl when Rl is hydroxyl group; and R3 is hydrogen or a phosphoric acid residue), or salts thereof which exhibit noticeable antitumor activities and are useful as anticancer agents.
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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 June 29, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 29, 2010.
- 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.