Processes and intermediates in the synthesis of 5-(3-exo-bicyclo2.2.1hept-2-yloxy-4-methoxyphenyl)-3,4,5,6-tetrahydropyrimidin-2(1h)-one
CA 2196309 C · Owner: Murtiashaw, Charles W. · Inventors: Lacour, Thomas G.; Murtiashaw, Charles W.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Disclosed are novel processes for preparing the pharmaceutically active compound 5-(3-(2S)-exobicyclo 2.2.1 kept-2-yloxy-4-methoxyphenyl)-3 4, 5, 6-, tetrahydropyrimidin-2(1H)-one of the formula: (see formula I), and its corresponding 2R enantiomer and for preparing certain intermediates used in the synthesis of these compounds. Also disclosed are novel intermediates used in the synthesis of such pharmaceutically active compounds and other novel compounds that are related to such intermediates.
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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 May 4, 1995 and granted October 16, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 4, 2015.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 4, 2017.
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Timeline
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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.