Substituted aryl boronic acids, their preparation and their...

Details Substituted aryl boronic acids, their preparation and their... Substituted aryl boronic acids, their preparation and their...

C - Chemistry, Metallurgy

07

F

C07F 5/02 (2006.01) C07C 217/20 (2006.01) C07D 205/04 (2006.01) C07D 207/04 (2006.01) C07D 211/14 (2006.01) C07D 241/04 (2006.01)

Patent

CA 2491029

The invention relates to processes for preparing a compound of the formula (V) and alkyl boronic esters thereof wherein R1 is attached at the 2 or 3 position of the benzene ring, R2 is attached at the 5 or 6 position and R1, R2 and G are as defined herein. Said compound is a key synthetic intermediate in the preparation of 2-amino-6-(substituted-4phenoxy)-substituted-pyridines useful as nitric oxide synthase (NOS) inhibitors in a mammal.

L'invention concerne des procédés de préparation d'un composé représenté par la formule (V) et d'esters alkyles boroniques de ce composé. Dans cette formule R?1¿ est relié à la position 2 ou 3 du noyau de benzène, R?2¿ à la position 5 ou 6 et R?1¿, R?2¿ et G sont comme définis dans le descriptif. Ledit composé est un intermédiaire synthétique clé dans la préparation de pyridines substituées 2-amino-6-(substitué-4phénoxy) qui sont utiles en tant qu'inhibiteurs de la synthase d'oxyde nitrique (NOS) chez un mammifère.

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