A SIMPLIFIED PROCEDURE FOR THE PREPARATION OF DARUNAVIR

The present invention relates to an improved process for preparing [(1S,2R)-3-[[(4-aminophenyl)-sulfonyl](2-methylpropyl)amino]-2-hydroxy-1-(phenylmethyl)-propyl]-carbamic acid (3R,3aS,6aR)-hexahydrofuro[2,3-b]furan-3-yl ester which compound is also known under its INN as darunavir by reacting carbo...

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Bibliographische Detailangaben
Hauptverfasser: ROBINSON, SHANE BARRY, STAPPERS, ALFRED ELISABETH, LANG, YOLANDE LYDIA
Format: Patent
Sprache:eng ; fre
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Zusammenfassung:The present invention relates to an improved process for preparing [(1S,2R)-3-[[(4-aminophenyl)-sulfonyl](2-methylpropyl)amino]-2-hydroxy-1-(phenylmethyl)-propyl]-carbamic acid (3R,3aS,6aR)-hexahydrofuro[2,3-b]furan-3-yl ester which compound is also known under its INN as darunavir by reacting carbonic acid 2,5-dioxo-1-pyrrolidinyl [(3R,3aS,6aR)-hexahydrofuro[2,3-b]furan-3-yl]ester with 4-amino-N-[(2R,3S)-3-amino-2-hydroxy-4-phenylbutyl]-N-(2-methylpropyl)-benzenesulfonamide in ethanol as solvent. Furthermore said process allows for darunavir to be isolated immediately in its ethanolate form, i.e. darunavir monoethanolate, which is the marketed form of darunavir under the tradename Prezista. La présente invention concerne un procédé amélioré de préparation de [(1S,2R)-3-[[(4-aminophényl)-sulfonyl](2-méthylpropyl)amino]-2-hydroxy-1-(phénylméthyl)-propyl]-carbamic acid (3R,3aS,6aR)-hexahydrofuro[2,3-b]furan-3-yl ester de tel composé est aussi connu sous son INN en tant que darunavir en faisant réagir de l'acide carbonique 2,5-dioxo-1-pyrrolidinyl [(3R,3aS,6aR)-hexahydrofuro[2,3-b]furan-3-yl]ester avec 4-amino-N-[(2R,3S)-3-amino-2-hydroxy-4-phenylbutyl]-N-(2-méthylpropyl)-benzènesulfonamide dans de l'éthanol en tant que solvant. En outre, ledit procédé permet d'isoler immédiatement le darunavir sous sa forme éthanolate, c'est-à-dire le darunavir monoéthanolate, qui est la forme commercialisée de darunavir sous le nom commercial Prezista.