Patent ID: 8557845

Claim:
A compound represented by formula (Ib) wherein R is a group —COR a , —CONHR a or —CONR a R b wherein R a and R b are, each independently, hydrogen or an optionally substituted group selected from straight or branched C 1 -C 6 alkyl, C 3 -C 6 cycloalkyl, aryl, arylalkyl, heterocyclyl or heterocyclylalkyl or; together with the nitrogen atom to which they are bonded, R a and R b may form an optionally substituted 5 or 6 membered heterocycle optionally containing one additional heteroatom or heteroatomic group selected among N, NH, O or S; R 1 is wherein, the formula (IIa), the cycle represents a 5 to 7 membered heterocyclic ring wherein X, directly linked to the rest of the molecule, represents a carbon or nitrogen atom; Y is a carbon, nitrogen, oxygen or sulfur atom or it is an NH group, provided that at least one of X and Y is other than a carbon atom; R c is, independently from each other and in any one of the free positions of the heterocyclic ring of formula (IIa), a halogen atom or hydroxy group or it is an optionally substituted group selected from straight or branched C 1 -C 6 alkyl, C 3 -C 6 cycloalkyl, aryl, arylalkyl, heterocyclyl, heterocyclylalkyl, amino, aminocarbonyl, carboxy, oxo (═O), alkoxycarbonyl, alkylcarbonyl or arylcarbonyl; and n is 0 or an integer from 1 to 4; or a pharmaceutically acceptable salt thereof.