Heterocycle-substituted benzenemethanamine derivatives
CA 2125675 A1 · Owner: Janssen Pharmaceutica Naamloze Vennootschap · Inventors: Janssen, Paul Adriaan Jan; Verdonck, Marc Gustaaf Celine; Bosmans, Jean-Paul Rene Marie Andre
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention is concerned with antiretroviral (e.g. anti-HIV-1) compounds having formula (I) wherein R1 and R2 each , independently are halo or methyl; R3 is hydrogen halo, nitro, or trifluoromethyl; R4 is trifuloromethyl or methylcarbonyl; or a radical -C(=X)-NR5R6 wherein X is 0 or S and R5 and R6, each independently are hydrogen or C1-4alkyl; or a radical -Alk-R7, wherein Alk is C1-4alkanediyl; and R7 is hydrogen or hydroxy; Het is a heterocycle radical of formulae (a); (b); (c); (d) or (e). Pharmaceutical compositions containing said compounds of formula (I) and processes of preparing said compounds and compositions.
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 December 22, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 22, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 22, 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.