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Expired Canadian patentCanada

Process for the preparation of hmg-coa reductase inhibitors intermediates

CA 1319700 C · Owner: Merck & Co. Inc. · Inventors: Volante, Ralph P.; Shinkai, Ichiro; Lynch, Joseph E.

CIPO record

Overview

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

A novel process for the preparation of an intermediate ester in the synthesis of hypercholesterolemic compounds of the HMG-CoA reductase type of the following general formula (1): (1), involving an enantioselective aldol condensation is disclosed.

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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 June 29, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 29, 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.
FiledJune 25, 1986
GrantedJune 29, 1993
Term endedJune 29, 2010
Patent numberCA 1319700 C
Classification (IPC)C07C69/71 +2 more

Timeline

Timeline From CIPO dates

19871990199319961999200220052008Application filedJune 25, 1986Patent grantedJune 29, 1993Term endedJune 29, 2010

Sources & verification

Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.