Substituted pyrazolopyrimidines, a process for their...

C - Chemistry – Metallurgy – 07 – D

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C07D 487/04 (2006.01) A61K 31/519 (2006.01) C07D 519/00 (2006.01)

Patent

CA 2659871

Substituted pyrazolopyrimidine derivatives of formula (I) wherein Y1, Y2, Y3, Y4 represent N or C-, whereby at least two of the groups Y1 to Y4 denote a carbon atom, R1 represents chloro or bromo, R2 to R7 represent e.g. hydrogen, methyl or ethyl; and R10 and R11 independent ly represent e.g. hydrogen or C1-C6alkyl, are potent mGluR5 modulators and are useful for the prevention of acute and chronic neurological disorders.

Cette invention concerne des dérivés de pyrazolopyrimidines substituées représentés par la formule (I), dans cette formule, Y1, Y2, Y3, Y4 représentent N ou C-, au moins deux des groupes Y1 à Y4 présentent un atome de carbone, R1 représente chloro ou bromo, R2 à R7 représentent, par exemple, hydrogène, méthyle ou éthyle; et R10 et R11 indépendament l'un de l'autre représentent, par exemple, hydrogène ou alkyle C1-C6, lesquels dérivés sont des modulateurs mGluR5 puissants et sont utiles pour prévenir des troubles neurologiques sévères et chroniques.

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