Process for the enantioselective preparation of pregabalin

C - Chemistry – Metallurgy – 07 – D

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C07D 317/20 (2006.01) C07C 227/16 (2006.01) C07C 227/18 (2006.01) C07C 229/08 (2006.01) C07C 229/14 (2006.01) C07D 207/267 (2006.01) C07D 207/27 (2006.01) C07D 207/273 (2006.01) C07D 491/056 (2006.01)

Patent

CA 2693843

The invention provides a new enantioselective process for the preparation of (S) -pregabalin, or a pharmaceutical acceptable addition acid salt comprising: acid hydrolysis of the dioxolan ring of a chiral compound of general formula (I) to obtain compound of general formula (II); oxidation of compound (II) to obtain a compound of general formula (III) and transforming compound (III) into compound of general formula (IV); subjecting compound (IV) to basic hydrolysis to obtain a compound of general formula (V) which is reduced to obtain enantiomerically pure S-pregabalin. The invention also provides new chiral intermediates involved in the process.

L'invention porte sur un nouveau procédé énantiosélectif pour la préparation de la (S)-prégabaline, ou sur un sel d'addition avec les acides pharmaceutiquement acceptable, comprenant les opérations consistant à effectuer une hydrolyse acide du cycle dioxolane d'un composé chiral de la formule générale (I) pour obtenir un composé de la formule générale (II) ; effectuer une oxydation du composé (II) pour obtenir un composé de formule générale (III), et transformer le composé (III) en un composé de la formule générale (IV) ; soumettre le composé (IV) à une hydrolyse basique pour obtenir un composé de la formule générale (V) qui est réduit pour obtenir de la S-prégabaline énantiomériquement pure. L'invention porte également sur de nouveaux intermédiaires chiraux mis en jeu dans le procédé.

LandOfFree

Say what you really think

Search LandOfFree.com for Canadian inventors and patents. Rate them and share your experience with other people.

Rating

Process for the enantioselective preparation of pregabalin does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process for the enantioselective preparation of pregabalin, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for the enantioselective preparation of pregabalin will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFCA-PAI-O-1446266

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.