Dichloro-substituted imidazole derivatives as antifungal agents
CA 2014202 C · Owner: Sociedad Espanola De Especialidades Farmaco-Terapeuticas S.A. · Inventors: Rovatti, Romeo Andreoli; Mestres, Ricardo Cepero
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Dichloro-substituted 1-(5H-dibenzoa,dcyclohepten-5-yl)-1H-imidazole compounds of formula (I) in, which -X- is either -CH2-CH2- or -CH=CHand their, pharmaceutically acceptable addition salts preferably, the nitric acid ones. Products of formula (I) are prepared from products of formula (VI) where Z represents a leaving group such as halogen, by treatment with an excess of imidazole in dimethylformamide. Products (I) show an antifungal activity comparable -or superior- to antimycotics in the market such as Clo-, trimazole and Bifonazole. (I) (VI)
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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 April 9, 1990 and granted February 4, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 9, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 9, 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
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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.