New process for the preparation of eletriptan

Details New process for the preparation of eletriptan New process for the preparation of eletriptan

C - Chemistry, Metallurgy

07

D

C07D 403/06 (2006.01) A61K 31/40 (2006.01) A61K 31/404 (2006.01)

Patent

CA 2432138

The present invention is concerned with an improved process for the preparation of the anti-migraine drug, (R)-5-(2-benzenesulphonylethyl)-3-N-methylpyrrolidin- 2-ylmethyl)-1H-indole (eletriptan), available commercially as the hydrobromide salt: (see formula I) and with an intermediate and dimer-free products obtained thereby.

La présente invention concerne un procédé amélioré permettant de préparer un antimigraineux, représenté par la formule: (R)-5-(2-benzènesulphonyléthyl)-3-N-méthylpyrrolidine-2-ylméthyl)-1H-indole (eletriptan), disponible dans le commerce en tant que sel bromhydrate. La présente invention concerne également des produits intermédiaires et exempts de dimère obtenus par ce procédé.

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