| abstract |
The present invention relates to derivativesof formula (I) wherein (R1)n, R2, R3, R4a, R4b, R5a, R5b and Ar1 are as described in the description, to their preparation, to pharmaceutically acceptable salts thereof, and to their use as pharmaceuticals, to pharmaceutical compositions containing one or more compounds of formula (I), and especially to their use as modulators of the prostaglandin 2 receptors EP2 and/or EP4. |