The present invention relates to fused pyrrole compounds of the formula 1. ##STR1##

in which at least one of the radicals R1, R2, R3 is 4-sulphur-substituted phenyl. These compounds are in particular pyrrolizines, indolizines and heteroanalogues having selective inhibitory action on isoenzyme-2 of prostaglandin H synthase (COX-2). The invention also relates to pharmaceutical compositions which contain these compounds; and the use of these compounds for the treatment of disorders of the rheumatic type.