Tropolone derivatives, processes for the preparation thereof and the use thereof as anti-tumor agents

摘要

New tropolone derivatives of the general formula: <IMAGE> wherein R1 represents H or an alkyl group, R2 represents an alkyl, aryl, aralkyl or heterocyclic group and R3 represents an alkoxyl, aryl or heterocyclic group or a group of the formula: <IMAGE> or R2 and R3 may form together a part of a heterocyclic group, their metal complex salts, processes for the preparation thereof and the use thereof as anti-tumor agents.