2'-fluoronucleosides
CA 2322008 C · Owner: The University Of Georgia Research Foundation, Inc. · Inventors: Chu, Chung K.; Choi, Yongseok; Shi, Junxing
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
2'-Fluoronucleoside compounds are disclosed which are useful in the treatment of hepatitis B infection, hepatitis C infection HIV and abnormal cellular , proliferation including tumors and cancer. The compounds have general formulae (I), (II), (III), (IV) wherein Base is a purine or pyrimidine base; R1 is OH, H, OR3, N3, CN, halogen, including F or CF3, lower alkyl, amino, loweralkylamino di(lower)alkylamino, or alkoxy, and base refers to a purine or pyrimidine base; R2 is H, phosphate including monophosphate, diphosphate, triphosphate or a stabilized phosphate prodrug; acyl or other , pharmaceutically acceptable leaving group which when administered in vivo is , capable of providing a …
Read the whole patent
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 25, 1999 and granted June 28, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 25, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 25, 2021.
- 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.