A novel pyrrolopyridine derivative which is a compound represented by the formula ##STR00001## wherein Ring A represents an optionally substituted pyridine ring; X represents an electron-attracting group; Y represents an optionally substituted divalent C.sub.1-6 chain hydrocarbon group; R.sup.1 represents an optionally substituted hydrocarbon group; and R.sup.2 and R.sup.3 each independently represents hydrogen, an optionally substituted hydrocarbon group or an optionally-substituted heterocyclic group, or R.sup.2 and R.sup.3 may form an optionally substituted ring in cooperation with the adjacent nitrogen atom, or a salt of the compound. The pyrrolopyridine derivative has vanilloid receptor agonist activity and is useful as medicines such as a preventive/therapeutic agent and analgesic for overactive bladder.