Compounds of formula (I) are agonists of PPARy, useful for the treatment of respiratory disease wherein R1, R2 or R3 each independently represents halo, cyano, nitro, amino, alkyl, haloalkyl, alkoxy, haloalkoxy, carboxylic acid or an ester or amide thereof R4 represents hydrogen or alkyl m, n or p independently represents 0, 1, 2 or 3.
