The synthesis of some amidrazones as bioisosteric diazaallyl radicals
is described starting from the reaction mechanism of the lipoxygenases
which postulates the existence of a radical after hydrogen abstractio
n from the arachidonic acid. N1,N3-diaryl-, N1-aryl-N3-alkyl-benzamidr
azones and N1-arylacetamidrazones are strong inhibitors of the soja li
poxygenase.