Oxazol/thiazolderivataktivatorer af HPPAR-alfa-receptoren

A compound of formula (I) and pharmaceutically acceptable salts, solvates and hydrolysable esters thereof Wherein X1 represents O or S; R1 and R2 are independently H or C1-3 alkyl or R1 and R2 which are bonded to the same carbon atom may together with the carbon atom to which they are bonded form a 3-5 membered cycloalkyl ring; R3 and R4 independently represent H, halogen, -CH3 and -OCH3; R5 represents H or C1-6 alkyl X2 represents NH, NCH3 or O; One of Y and Z is N, and the other is O or S; R6 represents phenyl or pyridyl (wherein the N is in position 2 or 3) and is optionally substituted by one or more halogen, CF3, C1-6 straight or branched alkyl (optionally substituted by halogen), with the provision that when R6 is pyridyl, the N is unsubstituted.