R-(r*r*)1-2-(4-fluorophenyl).beta.-.delta.-dihydroxy-5- (1-methylethyl-3-phenyl-4-(phenylamino) carbonyl-1h-pyrrole-1-heptanoic acid, its lactone form and salts thereof
CA 2021546 C · Owner: Roth, Bruce David · Inventors: Roth, Bruce David
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
R-(R*,R*)-2-(4-fluorophenyl)-.beta..delta.-dihydroxy-5-((1methylethyl)-3-phenyl-4-(phenylamino)-carbonyl-1Hpyrrole-1-heptanoic acid (formula I) or ( 2 R - t r a n s ) - 5 - ( 4 - f l u o r o p h e n y l ) - 2-(1-methylethyl-N,4-diphenyl-1-2-(tetrahydro-4-hydroxy- 6-oxo-2H-pyran-2-yl)ethyl-1H-pyrrole-3-carboxamide (formula II) and pharmaceutically acceptable salts thereof are useful for lowering cholesterol levels in mammals including humans. The chemical structures of these compounds are depicted as follows:, formula I formula II
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 July 19, 1990 and granted April 29, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 19, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 19, 2012.
- 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.