abstract |
A compound represented by formula (I): or its pharmaceutically acceptable salt, wherein a group represented by formula: is a group represented by formula: or; R1 is each independently halogen, hydroxy, cyano or the like; m is 0, 1, 2, 3 or 4; R2 is a hydrogen atom, halogen, cyano, substituted or unsubstituted alkyl or the like; R<SP>3a</SP>, R<SP>3b</SP>, R<SP>3c</SP> and R<SP>3d</SP> are each independently hydrogen atom, halogen or the like, with the proviso that R<SP>3a</SP>, R<SP>3b</SP>, R<SP>3c</SP> and R<SP>3d</SP> are not simultaneously hydrogen atom; ring C is represented as follows: or X is CH or N; Y is CH or N; R4 is each independently halogen, hydroxy, cyano or the like; p is 0 or 1; q is 0, 1, 2, 3 or 4; R5 is CR<SP>5C</SP> or N; R6 is CR<SP>6C</SP> or N; R7 is CR<SP>7C</SP> or N; R8 is CR<SP>8C</SP> or N; R9 is CR<SP>9C</SP> or N; with the proviso that R5, R6, R7, R8 and R9 are not simultaneously N; R<SP>5C</SP>, R<SP>6C</SP>, R<SP>7C</SP>, R<SP>8C</SP> and R<SP>9C</SP> are each independently hydrogen atom or the like. |