Patent ID: 8207165

Claim:
A compound of formula (I) wherein R is selected from the group consisting of —R a , —COR a , —CONR a R b , —SO 2 R a and —COOR a , and R1 is a group —NR c R d or —OR c , wherein R a , R b , R c and R d , the same or different, are each independently hydrogen or a group optionally further substituted, selected from straight or branched C 1 -C 6 alkyl, C 2 -C 6 alkenyl or C 2 -C 6 alkynyl, C 3 -C 6 cycloalkyl or cycloalkyl C 1 -C 6 alkyl, heterocyclyl or heterocyclyl C 1 -C 6 alkyl, aryl or aryl C 1 -C 6 alkyl, heteroaryl or heteroaryl C 1 -C 6 alkyl or, taken together with the nitrogen atom to which they are bonded, either R a and R b as well as R c and R d may form an optionally substituted 3 to 7 membered heterocyclyl or heteroaryl, optionally containing one additional heteroatom or heteroatomic group selected from S, O, N or NH, and pharmaceutically acceptable salts thereof.