Methods for the preparation of...

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C - Chemistry, Metallurgy

07

C

C07C 303/38 (2006.01) C07C 311/18 (2006.01)

Patent

CA 2682616

A process for the preparation of N-isobutyl-N-(2-hydroxy-3-amino-4-phenylbutyl)-p-nitrobenzenesulfonylamide derivatives (I) in which a 1-benzyl-2-hydroxy-3-isobutylamine derivative (II) is reacted with a p-nitrophenylsulfonyl halide (III) in a solvent comprising a secondary or tertiary alcohol.

L'invention concerne un procédé pour la préparation de dérivés de N-isobutyl-N-(2-hydroxy-3-amino-4-phénylbutyl)-p-nitrobenzènesulfonylamide (I) consistant à faire réagir un dérivé de 1-benzyl-2-hydroxy-3-isobutylamine (II) avec un halogénure de nitrophénylsulfonyle (III) dans un solvant comprenant un alcool secondaire ou tertiaire.

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