A compound of formula (I), or a pharmaceutically acceptable salt thereof ** (See formula) ** in which, R1 is hydrogen, C1-C6 alkyl optionally substituted with hydroxy； R2 is hydrogen or halogen； R3 is hydrogen or halogen； R4 is hydrogen； R5 is hydrogen or halogen； or R4 and R5 are linked together and represent a bond, -CH2-, -CH2-CH2-, - CH>； = CH-, -CH>； = CH-CH2-； -CH2- CH>； = CH-； or -CH2-CH2-CH2-； R6 and R7 can be independently of each other H, C1-C6 alkyl optionally substituted with hydroxyl, C3-C6 cycloalkyl optionally substituted with halogen or hydroxy, or halogen； R8, R9, R, R ', R10 and R11 can be independently of each other H or C1-C6 alkyl optionally substituted with C1-C6 alkoxy； or any two of R8, R9, R, R ', R10 and R11 together with the carbon atom to which they are attached can form a saturated 3-6 membered carbocyclic ring； R12 is hydrogen or C1-C6 alkyl optionally substituted with halogen or C1-C6 alkoxy； or R12 and any one of R8, R9, R, R ', R10 or R11 together with the atoms to which they are attached can form a 4, 5, 6 or 7 membered azacyclic ring, said ring may optionally be substituted with halogen , cyano, hydroxy, C1-C6 alkyl, or C1-C6 alkoxy； n is 0 or 1； and R13 is C2-C6 alkenyl optionally substituted with C1-C6 alkyl, C1-C6 alkoxy or N, N-di-C1-C6 alkylamino； C2-6 alkynyl optionally substituted with C1-C6 alkyl or C1-C6 alkoxy； or C2-C6 alkylenyl oxide optionally substituted with C1-C6 alkyl.Un compuesto de fórmula (I), o una sal farmacéuticamente aceptable del mismo **(Ver fórmula)** en el que, R1 es hidrógeno, alquilo C1-C6 opcionalmente sustituido con hidroxi； R2 es hidrógeno o halógeno； R3 es hidrógeno o halógeno； R4 es hidrógeno； R5 es hidrógeno o halógeno； o R4 y R5 están unidos entre sí y representan un enlace, -CH2-, -CH2-CH2-, - CH>；=CH-, -CH>；=CH-CH2-； -CH2- CH>；=CH-； o -CH2-CH2-CH2-； R6 y R7 pueden ser independientemente el uno del otro H, alquilo C1-C6 opcionalmente sustituido con hidroxilo, cicloalquilo C3-C6 opci
