| abstract |
A compound useful as a preventive or therapeutic agent for sexual-hormone-dependent diseases, etc. It is a fused heterocyclic derivative represented by the following general formula (I). In the formula (I), ring A is a five-membered cyclic unsaturated hydrocarbon or five-membered heteroaryl; RA is halogeno, alkyl, alkenyl, alkynyl, carboxy, alkoxy, carbamoyl, alkylcarbamoyl, etc.; ring B is aryl or heteroaryl; RB is halogeno, alkyl, carboxy, alkoxy, carbamoyl, alkylcarbamoyl, etc.; E1 and E2 each is oxygen, etc.; U is a single bond or alkylene; and X is, e.g., a group represented by Y, -SO2-Y, -O-(alkylene)-Y-, or -O-Z (wherein Y is Z, amino, etc. and Z is cycloalkyl, heterocycloalkyl, aryl, heteroaryl, etc.). |