| abstract |
The present invention provides a novel bicyclic or tricyclic heterocyclic compound represented by formula (I) or a pharmacologically acceptable salt thereof. In formula (I), ring A is an aromatic group that may be substituted, one of X1 and X2 is a carbon atom, the other is a nitrogen atom, X3 is a nitrogen atom or CR2 , and X4 is a nitrogen atom Or CR 3 , X 5 is a sulfur atom or -CH=CH-, Z 1 is an oxygen atom, -C(R 6 )(R 7 )-, -NH-, -C(R 6 )(R 7 )-NH ‑, ‑NH‑C(R 6 )(R 7 )‑, ‑C(R 6 )(R 7 )‑O‑, ‑O‑C(R 6 )(R 7 )‑, or single bond, Z 2 And one of Z3 is CH, and the other is a nitrogen atom, or both Z2 and Z3 are nitrogen atoms, and other symbols are as defined in the description. |