There are provided inter alia compounds of formula (I) wherein R
1
, R
2
, R
3
, R
4a
and R
4b
are as defined in the specification and their use in therapy, especially in the treatment of bacterial (e.g. pneumococcal) infections.
There are provided inter alia novel N-phenyl substituted pyrrole derivativesand theiruse in therapy, especially in the treatment of bacterial (e.g. pneumococcal) infections.