Certain pyridyl, thienyl or furyl propenoic acids or esters having anti-inflammatory anti-allergic properties

Abstract

Compounds of formula (I): ##STR1## in which R.sub.1 is hydrogen or C.sub.1-6 alkyl; R.sub.2 is hydrogen or a group --CO.sub.2 R.sub.3 where R.sub.3 is hydrogen or C.sub.1-6 alkyl; n is an integer of from 2 to 12; X represents a double or triple bond, and each of A and B represents hydrogen when X is a double bond, or both A and B are absent when X is a triple bond; and ##STR2## represents an aromatic heterocyclic ring, are disclosed as inhibitors of 5-lipoxygenase.

Dependencies are inferred from the claim text.