Process for the preparation of clausenamide
CA 1280427 C · Owner: Hartwig, Wolfgang · Inventors: Hartwig, Wolfgang
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A new synthetic route to clausenamide having the formula, has been found. It has been found that a compound of the formula, can be oxidized to provide the stereochemically correctly configured product, clausenamide. A number of new compounds useful in the total synthesis of clausenamide have also been found. These compounds have the general formula wherein R is ?-C6H5, CHO, ?-C6H5 and CH20. Clausenamide shows an antiamnesic action and an action affording protection from cerebral hypoxia in animal experiments.
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
- Granted February 19, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 19, 2008.
- 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.