FUSED PYRIDAZINE DERIVATIVE COMPOUNDS AND DRUGS CONTAINING THE COMPOUNDS AS THE ACTIVE INGREDIENT.

摘要

Fused pyridazine derivatives represented by the following general formula (I) (wherein each symbol is as defined in the description) and pharmaceutically acceptable salts thereof: (I) Because of inhibiting poly(ADP-ribose)polymerase, the compounds represented by the general formula (I) are useful as preventives and/or remedies for various ischemic diseases (in brain, cord, heart, digestive tract, skeletal muscle, retina, etc.), inflammatory diseases (inflammatory bowel disease, multiple cerebrosclerosis, arthritis, etc.), neurodegenerative diseases (extrapyramidal disorder, AlzheimeraC¦s disease, muscular dystrophy, lumbar spinal canal stenosis, etc.), diabetes, shock, head trauma, renal failure, hyperalgesia, etc. Moreover, these compounds are useful as agents against retroviruses (HIV, etc.) and sensitizers and immunosuppressants in treating cancer.