Acyclovir diester derivatives
CA 2289969 A1 · Owner: Yanachkov, Ivan · Inventors: Glazier, Arnold; Yanachkov, Ivan; Yanachkova, Milka
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Disclosed are novel prodrugs represented by the following structural formula (I). Z is oxygen or sulfur; Y is, together with a hydroxy group acyclovir or , an analog of acyclovir; A is a substituted benzyl group with one or more protected hydroxy or protected amine groups in the ortho or para positions relative to the phosphate ester, which can be converted in vivo to a hydroxy or amino group. Also disclosed is a method of treating a viral infection in an individual or animal. The method comprises administering to the individual or animal a therapeutically effective amount of a prodrug represented by the structural formula shown above.
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 May 15, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 15, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 15, 2020.
- 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.