This invention is directed to compounds of the formula (I):
wherein one of R
6
, R
7
, R
8
and R
9
is
and X, R
1
to R
12
, m, n and o are as defined in the description, and pharmaceutically acceptable salts and/or esters thereof. The invention is also directed 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 PPARδ and/or PPARα agonists.