A compound of Formula (I) or a pharmaceutically acceptable salt thereof: wherein: R1 is selected from the group consisting of hydrogen, halo, alkyl, cycloalkyl, heteroalicyclic, hydroxy, alkoxy, -C (O) R7, - NR8R9, - (CH2) nR10 and -C (O) NR11R12； R2 is selected from the group consisting of hydrogen, halo, alkyl, haloalkyl, hydroxy, alkoxy, haloalkoxy, nitro, cyano, -NR8R9, -NR8C (O) R9, -C (O) R7, -C (O) NR11R1 ； -S (O) 2NR8R9 and -SO2R13R3 is selected from the group consisting of hydrogen, halo, alkyl, haloalkyl, hydroxy, alkoxy, -C (O) R7, - NR8R9, -NR8S (O) 2R9, -S (O ) 2NR8R9, -NR8C (O) R9, -NR8C (O) OR9 and -SO2R13； R4 is selected from the group consisting of hydrogen, halo, alkyl, hydroxy, alkoxy and -NR8R9； R5 is selected from the group consisting of hydrogen, alkyl and -C (O) R14； R6 is selected from the group consisting of hydroxy, alkoxy, aryloxy, -N (R15) (CH2) rR16, -NR8R9 and -N (R17) -CH (R18) - CR19 (OH) -CH (R20) Z； R7 is selected from the group consisting of hydrogen, hydroxy, alkoxy and aryloxy； each of R8 and R9 is independently selected from the group consisting of hydrogen, alkyl, cycloalkyl, aryl and heteroaryl； or R8 and R9 together with the atoms to which they are attached can form a heterocyclic ring； R10 is selected from the group consisting of hydroxy, -C (O) R7, -NR8R9 and -C (O) NR8R9； each of R11 and R12 is independently selected from the group consisting of hydrogen, alkyl and aryl； or R11 and R12 together with the nitrogen atom to which they are attached can form a heterocyclic ring； R13 is selected from the group consisting of alkyl, aryl, arylalkyl, heteroaryl and heteroarylalkyl； R14 is selected from the group consisting of hydroxy, alkoxy, aryloxy and -NR8R9； R15 is selected from the group consisting of hydrogen and alkyl；Un compuesto de Fórmula (I) o una sal farmacéuticamente aceptable del mismo: en la que: R1 se selecciona entre el grupo que consiste en hidrógeno, halo, alquilo, cicloalquilo, heteroalicíclico, hidroxi, alcoxi,
