[Synthesis of N-(2-carboxy-thieno(2,3-b)pyridin-3-yl)-amidines by the reaction with 4-oxo-4H-pyrido(3',2':4,5)-thieno(3,2-d)-1,3-oxazines with secondary cycloaliphatic amines].

4-Oxo-4H-pyrido[3',2':4,5]thieno[3,2-d]1,3-oxazines react with secondary cycloaliphatic amines to give besides the expected bisamides the amine salts of N-(2-carboxy-thieno[2,3-b]pyridine-3-yl)amidines. These compounds showed inhibitory activity against different lipoxygenases, but a small chemical stability.