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.
A series of fluorinated pyridazinone derivatives with IC50 values ranging from 8 to 4000 nM for the mitochondrial complex 1 (MC1) have been prepared. Structure-activityrelationship (SAR) assessment indicated preference of the fluorine label to be incorporated on an alkyl side chain rather than directly on the pyridazinone moiety. Tissue distribution studies of a series of analogues ([18F] 22-28) in