This invention is concerned with compounds of the formula (I), wherein one ofR6, R7 and R8 is (II), and R1 to R15 and n are as defined in the description,and all enantiomers and pharmaceutically acceptable salts and/or estersthereof. The invention further relates to pharmaceutical compositionscontaining such compounds, to a process for their preparation and to their usefor the treatment and/or prevention of diseases which are modulated byPPAR.delta. and/or PPAR.alpha. agonists.