3-demethylmevalonic acid derivatives, a process for their preparation, pharmaceutical products based on these compounds, their use and intermediates
CA 1314873 C · Owner: Bartmann, Wilhelm · Inventors: Bartmann, Wilhelm; Beck, Gerhard; Granzer, Ernold
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the disclosure, 3-Demethylmevalonic acid derivatives a process for their, preparation, pharmaceutical products based on these compounds, their use and intermediates, 3-Demethylmevalonic acid derivatives of the formula I (.delta.lactone) and II (corresponding dihydroxy carboxylic acid derivative), in which A-B, Z, R1, R2, R3 and R4 have the indicated meanings, a process for the preparation of these compounds their use as medicaments, and pharmaceutical products are described. In addition, new intermediates for the preparation of the compounds of the formula I and formula II are described.
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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
- Granted March 23, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 23, 2010.
- 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.