Antagonists having a substituted phenyl phenol or a substituted phenolic biphenyl structure, and various derivatives thereof, are specific leukotriene antagonists. Their structures, use and synthesis are disclosed. Also, pharmaceutical formulations are disclosed for use in applications treating diseases or conditions characterized by excessive release of leukotriene B.sub.4, one of the metabolites of arachidonic acid. The primary LTB.sub.4 antagonistic structures are represented as: ##STR1##