Patent ID: 8394802

Claim:
A compound of formula (I) wherein: R1 is —NR a R b or —OR a and R2 is —NH 2 , —NHCOR c , —NHCONHR c , —NHSO 2 R c , —C≡CR d or R d wherein R a , R b , R c and R d , 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, cycloalkyl C 1 -C 6 alkyl, heterocyclyl, heterocyclyl C 1 -C 6 alkyl, aryl, aryl C 1 -C 6 alkyl, heteroaryl and heteroaryl C 1 -C 6 alkyl, or R a and R b , taken together with the nitrogen atom to which they are bonded, 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; said 3 to 7 membered heterocyclyl or heteroaryl can be optionally substituted by C 1 -C 6 alkyl, heteroaryl, aminocarbonyl, C 2 -C 6 alkenyl, heterocyclyl, alkylsulfonyl or aryl; wherein R a is optionally substituted by halogen, C 1 -C 6 alkyl, C 3 -C 6 cycloalkyl, heterocyclyl, aryl, heteroaryl, amino, dialkylamino, hydroxyl or alkoxy; R b is optionally substituted by halogen, C 1 -C 6 alkyl, C 3 -C 6 cycloalkyl, heterocyclyl, aryl, heteroaryl, amino, dialkylamino, hydroxyl or alkoxy; R c is optionally substituted by halogen, oxo groups (═O), cyano, C 1 -C 6 alkyl, C 3 -C 6 cycloalkyl, heterocyclyl, aryl, heteroaryl, dialkylamino or alkoxy; and R d is optionally substituted by halogen, nitro, carboxy, cyano, C 1 -C 6 alkyl, polyfluorinated alkyl, C 3 -C 6 cycloalkyl, aryl, heteroaryl, amino, dialkylamino, hydroxyl, alkoxy, polyfluorinated alkoxy, carbonyl, alkylcarbonyl, alkoxycarbonyl or alkylthio; and pharmaceutically acceptable salts thereof.