The present invention relates to compounds of the general formula (I): ##STR00001## wherein A, B, C and D each independently are a methine group or a nitrogen atom, said methine group optionally having a substituent(s) with at least one of them meaning the methine group; E means a group represented by the following formulae (E1): ##STR00002## R.sup.1 means a lower alkyl group or an aryl group optionally having a substituent(s) or means a lower alkylene group linked to arbitrary, linkable position(s) of E, and others. The compounds of the present invention are useful as an agent for the treatment of a variety of diseases related to NPY.