The present invention relates to two novel pyrrole derivatives [3-Phenyl-4-(phenylcarbamoyl)-2-(4-fluorophenyl)-5-(1-methylethyl)-pyrrole-1-yl]methyl(diphenyl)phosphine oxide and Diethyl [3-Phenyl-4-(phenylcarbamoyl)-2-(4-fluorophenyl)-5-(1-methylethyl)-pyrrole-1-yl]methylphosphonate. These pyrrole derivatives can be used as intermediates for the synthesis of the anticholesterol drug atorvastatin.