EP0782569A1 — Racemisation and asymmetric transformation processes used in the manufacture of levobupivacaine and analogues thereof
Assigned to Darwin Discovery Ltd · Expires 1997-07-09 · 29y expired
What this patent protects
A process for the racemisation of an optically-enriched piperidine-2-carboxanilide compound, comprises heating the compound in the presence of an alkanoic or arylalkanoic acid. A process for the asymmetric transformation of such a compound comprises heating the compound in the pr…
USPTO Abstract
A process for the racemisation of an optically-enriched piperidine-2-carboxanilide compound, comprises heating the compound in the presence of an alkanoic or arylalkanoic acid. A process for the asymmetric transformation of such a compound comprises heating the compound in the presence of an acid as defined above, a chiral acid resolving agent and an inert cosolvent.
Drugs covered by this patent
Bibliographic data sourced from FDA Orange Book + USPTO public records. Plain-English summary generated by AI grounded in source text. Patent term extensions (PTR, SPC, pediatric) may shift the effective expiry. Not legal advice.
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