This invention relates to compounds of the formula I:
wherein one of R
6
, R
7
and R
8
is
and R
1
to R
15
and n are as defined in the description, and all enantiomers and pharmaceutically acceptable salts and/or esters thereof. The invention further relates to pharmaceutical compositions containing such compounds, to a process for their preparation and to their use for the treatment and/or prevention of diseases which are modulated by PPAR δ and/or PPARα agonists.