PYRIDAZINONE DERIVATIVES USED FOR THE TREATMENT OF PAIN

摘要

A pyridazinone derivative compound shown by the following formula (I): where in R1 is selected from hydrogen, etc.; R2 is selected from substituted or unsubstituted aryl, etc.; R3 is hydrogen, etc.;p is 0, 1 or 2; R4 and R5 are each hydrogen, etc.; R6 and R7 are taken together to form a group of the formula: wherein R8 is hydrogen; X is selected from oxygen, etc; R10 is selected from hydrogen, etc.; R11 is selected from hydrogen, etc.; R12 is selected from hydrogen, etc.; R13 is selected from hydrogen, etc.; R14 is selected from hydrogen, etc.; m and n are each 0, 1, or 2, or a pharmaceutically acceptable salt thereof, which is useful as a medicament.