Patent ID: 7528252

Claim:
A compound of the formula wherein: X is CH; R 1 is C 1 -C 6 linear or branched saturated or unsaturated alkyl; R2 is hydrogen or C1-C6 alkyl R 3 is NH 2 , NHR 4 R 4 is C 1 -C 6 alkyl or C 1 -C 6 hydroxyalkyl, C 1 -C 3 alkoxyalkyl, amino(C 1 -C 6 )alkyl, where the amino group is optionally substituted with one or two C 1 -C 3 alkyl groups, being said alkyl groups linear or branched saturated or unsaturated, C 6 -C 14 aryl or C 6 -C 14 aryl(C 1 -C 6 )alkyl, with the aryl group optionally substituted by one or more substituents, either the same or different, selected from the group consisting by halogen, hydroxy, C 1 -C 6 alkoxy linear or branched saturated or unsaturated, amino, mono- or di-substituted with C 1 -C 6 alkyl linear or branched saturated or unsaturated; and pharmaceutically acceptable salts thereof.