| abstract |
A pyrrole derivative having excellent anti-microbial activities is disclosed. This compound is represented by the following formula (I): ##STR1## wherein X 1 and X 2 are the same or different and mean individually a halogen atom, R 1 denotes an alkyl, cycloalkyl, haloalkyl, alkenyl, substituted or unsubstituted phenyl, substituted or unsubstituted aralkyl group or a group --COR 3 in which R 3 is an alkyl group having at least five carbon atoms or a cycloalkyl, haloalkyl, alkenyl, substituted or unsubstituted phenyl, substituted or unsubstituted aralkyl, or heterocyclic group, and R 2 stands for a hydrogen or halogen atom or an alkyl group, with a proviso that R 1 is other than a hydrogen atom or methyl group when X 1 , X 2 and R 2 are each a bromine atom. |