Purine derivatives
CA 1075237 A · Owner: Wellcome Foundation Limited (The) · Inventors: Schaeffer, Howard J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention relates to compounds of formula (I): (I), wherein R is hydroxy, amino or halogen R1 is hydrogen, or -C.R2 where R2 is hydrogen straight or branched chain, alkyl group containing 1 to 8 carbon atoms or aryl group containing 6 or 10 carbon atoms, and n is an integer from 2 to 10. Provided are pharmaceutical compositions comprising a compound of formula (I) together with an acceptable carrier therefor, and the use of the compounds in medicine. Also provided are mcthods for the synthesis of the novel compounds. Compounds of formula (I) have good antiviral activity against several types of virus, in particular those in the Herpes family, and vaccinia.
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
- Granted April 8, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 8, 1997.
- 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.