| abstract |
(57) [Summary] [Object] To provide a novel fused pyridazine compound useful as a medicine and a pharmaceutically acceptable salt thereof. [Structure] General formula (I) (In the formula, ring C is an aromatic group 5 which may have a hetero atom. -6 means a 6-membered ring. n means an integer of 1-4. R 1 is a hydrogen atom, a halogen atom or the like. A Means a hydrogen atom, a halogen atom and the like. X is the formula − It means a group represented by N = or the like. Y means a group represented by the formula -CO- and the like. ] The fused pyridazine compound shown by these, or its pharmacologically acceptable salt. |