Disclosed is a compound of Formula I: ##STR1## or a pharmaceutically acceptable salt or solvate thereof, wherein: R is selected from the group consisting of: H, Cl, Br, F, and I; T represents C or N with the dotted line attached to T representing a double bond when T is C and being absent when T is N; and X represents O or S with the proviso that T is N when X is O.Also disclosed is a pharmaceutical composition comprising a compound of Formula I and a pharmaceutically acceptable carrier.Further disclosed is a method of treating asthma, allergy and/or inflammation comprising administering to a mammal in need of such treatment an anti-asthmatic, anti-allergic and/or an anti-inflammatory, respectively, effective amount of a compound of Formula I.