The present invention relates to the process for preparing a compound of the formula ##STR1## wherein A is C.sub.1 -C.sub.6 alkyl, an aryl which is mono or disubstituted with F, Cl, Br, OCH.sub.3, C.sub.1 -C.sub.3 alkyl or benzy. In the preferred compound A is CH.sub.3. The 5-lipoxygenase inhibitors that are prepared in accordance with the present invention are selective inhibitors of the action of lipoxygenase enzyme and are useful in the treatment or alleviation of inflammatory diseases, allergy and cardiovascular diseases in mammals.