Pyrazolo [4, 3-d]pyrimidines, process for their preparation...

C - Chemistry – Metallurgy – 07 – D

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

Patent

CA 2524344

The invention relates to 3-, 7-disubstituted pyrazolo[4,3-d]pyrimidines represented by the general formula I (I), and pharmaceutically acceptable salts thereof, wherein R3 is selected from the group consisting of alkyl, cycloalkyl, , cycloalkyl alkyl, cycloheteroalkyl alkyl, cycloheteroalkyl, aryl, heterocycle, heteroaryl, arylalkyl, heteroarylalkyl, and heteroalkyl, wherein each of the groups may optionally be substituted, R7 is selected from the group consisting of halogen, hydroxyl, hydroxylamino, amino, carboxyl, cyano, nitro, amido, sulfo, sulfamido, carbamino, unsubstituted or substituted alkyl, substituted or unsubstituted cycloalkyl, substituted or unsubstituted arylalkyl, substituted or unsubstituted heteroalkyl, substituted or unsubstituted heteroarylakyl, substituted or unsubstituted cycloalkyl alkyl, substituted or unsubstituted cycloheteroalkyl alkyl; R7'-X- wherein X is an - NH-, -N(alkyl)-, -0- or -S- moiety and R7' is selected from the group consisting of H, alkyl, cycloalkyl, aryl, alkylcycloalkyl, arylalkyl, heterocycle, heterocyclealkyl, substituted alkyl, substituted cycloalkyl, substituted aryl, substituted arylalkyl, substituted heterocycle, substituted heteroaryl, substituted heteroarylalkyl, substituted heteroalkyl, substituted cycloalkyl alkyl and substituted cycloheteroalkyl alkyl, wherein the groups are preferably substituted by more than one halogen, hydroxyl, amino, mercapto, carboxyl, cyano, nitro, amido, sulfo, sulfamido, carbamino, alkyl, alkoxy, and substituted alkyl group.

L'invention concerne des pyrazolo[4,3-d]pyrimidines 3-, 7-disubstituées de formule générale (I), et des sels de celles-ci acceptables sur le plan pharmaceutique, dans laquelle R3 est sélectionné dans le groupe comprenant alkyle, cycloalkyle, cycloalkyle alkyle, cyclohétéroalkyle alkyle, cyclohétéroalkyle, aryle, hétérocycle, hétéroaryle, arylalkyle, hétéroarylalkyle, et hétéroalkyle, chaque groupe pouvant éventuellement être substitué; R7 est sélectionné dans le groupe comprenant halogène, hydroxyle, hydroxylamino, amino, carboxyle, cyano, nitro, amido, sulfo, sulfamido, carbamino, alkyle non substitué ou substitué, cycloalkyle non substitué ou substitué, arylalkyle non substitué ou substitué, hétéroalkyle non substitué ou substitué, hétéroarylakyle non substitué ou substitué, cycloalkyle alkyle non substitué ou substitué, cyclohétéroalkyle alkyle non substitué ou substitué; R7'-X- dans lequel X est un fragment -NH-, -N(alkyle)-, -O- ou -S- et R7' est sélectionné dans le groupe comprenant H, alkyle, cycloalkyle, aryle, alkylcycloalkyle, arylalkyle, hétérocycle, hétérocyclealkyle, alkyle substitué, cycloalkyle substitué, aryle substitué, arylalkyle substitué, hétérocycle substitué, hétéroaryle substitué, hétéroarylalkyle substitué, hétéroalkyle substitué, cycloalkyle alkyle substitué et cyclohétéroalkyle alkyle substitué, les groupes étant de préférence substitués par plus d'un groupe halogène, hydroxyle, amino, mercapto, carboxyle, cyano, nitro, amido, sulfo, sulfamido, carbamino, alkyle, alcoxy, et alkyle substitué.

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