PYRIDONE-CARBOXYLIC ACID DERIVATIVES, PROCESSES FOR THE PREPARATION THEREOF AND ANTI-TUMOR AGENTS CONTAINING THE PYRIDONE-CARBOXYLIC ACID DERIVATIVES

摘要

This invention relates to pyridone-carboxylicacid derivatives of the following formula or saltsthereof :whereinR1 is a hydrogen atom, a halogen atom, etc.,R2 is a carboxyl group etc.,R3 is a hydrogen atom etc.,A is a nitrogen atom or CH,m is 1 or 2, aidY is an eliminable group or a group having thefollowing formula:whereinR4 is a hydrogen atom or a lower alkylgroup,Z is a hydrogen atom, a lower alkylgroup, etc.,R5 is a hydrogen atom, a lower alkylgroup, etc.,n is 0 or 1, andp is 1, 2, 3 or 4and to processes for the preparation of these compounds,and further to anti-tumor agents which contain the abovecompounds as effective ingredients.