Patent ID: 7935706

Claim:
A compound represented by the formula (I): wherein Z is N; A 1 is A 2 is an aromatic hydrocarbon cyclic group which is optionally substituted, or an aromatic heterocyclic group which is optionally substituted; R 2 is independently hydrogen, hydroxy or lower alkyl; R a , R b , R c and R d are each independently hydrogen or lower alkyl and, when there are a plurality of R a s or a plurality of R b s, they may be different from each other; w is 2; t is 1; X is: —NR 5 CO(CR 3 R 4 )n-, —NR 5 COCO(CR 3 R 4 )n-, or —NR 5 (CR 3 R 4 )mCO—, m is an integer of 1 to 4; n is an integer of 0 to 4; R 3 and R 4 are each independently hydrogen, halogen, hydroxy, optionally substituted lower alkyl, or optionally substituted lower alkoxy, and when there are a plurality of R 3 s and R 4 s, respectively, they may be different from each other; R 5 is independently hydrogen or lower alkyl, or a pharmaceutically acceptable salt thereof.