(4r,5s,6s,7r)-hexahydro-1- 5-(3-aminoinazole)methyl -3-butyl-5,6-dihydroxy-4,7-bis phaenylmethyl -2h-1,3-diazepin-2-one, its preparation and its use as hiv protease inhibitor
CA 2270963 A1 · Owner: Du Pont Pharmaceuticals Company · Inventors: Lam, Patrick Yuk-Sun; Rodgers, James David
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to compounds of formula (I) or pharmaceutically acceptable salt forms or prodrugs thereof which are useful as inhibitors of , HIV protease and to pharmaceutical compositions and diagnostic kits comprising the same, and methods of using the same for treating viral infection or as an assay standard or reagent.
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 November 4, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 4, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 4, 2019.
- 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.