Antitumor agent, novel 3(2H)-pyridazinone derivatives and their preparation
申请人:TAKEDA CHEMICAL INDUSTRIES, LTD.
公开号:EP0665223A1
公开(公告)日:1995-08-02
Anti-tomor agents comprising novel 3(2H)-pyridazinone derivatives or salts thereof and methods of producing the same are disclosed. Also disclosed is a method for treating or preventing tumors by administering to a mammal a therapeutically effective amount of 4,5-di substituted 3(2H)-pyridazinones and salts thereof.