This invention relates to compounds of Formula (I) wherein one of R5, R6 andR7 is (Formula II), and X1, X2, Y1 to Y4, R1 to R13 and m and n are as definedin the description, and to all enantiomers and pharmaceutically acceptablesalts and/or esters thereof The invention further relates to pharmaceuticalcompositions containing such compounds, to a process for their preparation andto their use for the treatment and/or prevention of diseases which aremodulated by PPAR.delta. and/or PPAR.alpha. agonists.