Synthesis of phenyl alanine derivatives
CA 1231719 A · Owner: Alkaloida Vegyeszet Gyar · Inventors: Korodi, Ferenc; Csorvassy, Istvan; Sandor, Jozsef
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to a large scale process for the preparation of 3-phenyl alanine derivatives of the general formula, (I) wherein, R stands for hydrogen or C1-4 alkyl R2 stands for hydrogen or CO-R4 - wherein R4 stands for C1-4 alkyl, aralkyl or aryl R5 stands for hydrogen or -CO-R4- wherein R4 is as given above.
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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 January 19, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 19, 2005.
- 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.