Synthesis of (r) and (s)-aminocarnitine and derivatives thereof from d-and l-aspartic acid
CA 2512679 A1 · Owner: Dell'Uomo, Natalina · Inventors: Tinti, Maria Ornella; Dell'Uomo, Natalina; Giannessi, Fabio
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process is described for the preparation of R or S aminocarnitine R or S , phosphonium aminocarnitine and R and S 3,4 diaminobutanoic acid and their , derivatives with the above formula (I) where Y is as described in the , attached description starting from aspartic acid with the same configuration as the desired compounds. This process is advantageous from the industrial point of view in terms of the type of reactants used the reduced volumes of , solvents and the possibility of avoiding purification of the intermediate products.
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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 December 19, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 19, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 19, 2025.
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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.