Pyrimidine derivatives
CA 1339313 C · Owner: Medivir Ab · Inventors: Sahlberg, S. Christer; Gronowitz, Salo; Johansson, K. Nils Gunnar
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Compounds of the formula, (see fig. I) wherein R1 is OH, NH2; R2 is a heteroaromatic or aromatic substituent as defined in claim 1; R3 is H OH, F, OCH3;, R4 is H, F, OH or an ether or ester residue thereof OCH3, CN, C~CH, N3; R5 is OH or an ether or ester residue thereof including mono-, di- and triphosphate esters; (see fig II), (see fig. III), wherein n is 0 or 1 and M is hydrogen or a pharmaceutically acceptable counterion such as sodium, potassium ammonium or, alkylammonium; and pharmaceutically acceptable salts thereof; and pharmaceutical compositions comprising said compounds can be used for therapeutic and/or prophylactic treatment of virus infections such as AIDS. Compounds of the …
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 August 19, 1997. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 19, 2014.
- 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.