Abstract: Heteroarylcarboxamide derivatives of the formula I: ##STR1## wherein A means an alkylene group, X means <NCHPh.sub.2 or <C.dbd.CPh.sub.2 in which Ph means phenyl and .circle.Het means a group of the formulas: ##STR2## in which Y means nitrogen atom or .dbd.CH--, R.sub.1 means hydroxy, a lower alkoxy or mercapto, R.sub.2 means hydrogen atom, a halogen atom, a lower alkyl group, a lower alkoxy group, nitro or cyano, R.sub.3 means a lower alkyl group, provided that R.sub.2 is attached at the 7-position when Y means nitrogen atom, or physiologically acceptable salts thereof, a process for preparing the same and a pharmaceutical composition containing the same as an active ingredient. The compounds of the present invention and salts thereof show an excellent antiallergic activity and thus are useful for the prophylaxis and treatment of allergic diseases.

Abstract: Compounds of the formula: ##STR1## wherein X is alkylene or --(CR.sub.6 .dbd.CR.sub.7).sub.r -- wherein R.sub.6 is H, alkyl or phenyl, R.sub.7 is H, alkyl, cyano or phenyl, and r is 1 or 2; A is alkylene or alkylene interrupted by at least one double bond; R.sub.1 is H, halogen, alkyl, alkoxy, alkylthio, cycloalkyloxy, cycloalkylthio, alkoxycarbonyl, carboxy, phenyl, phenoxy, phenylthio, 3-pyridyloxy or 3-pyridylthio; R.sub.2 is H, hydroxy, alkanoyloxy or alkoxycarbonyloxy, or adjacent R.sub.1 and R.sub.2 may combine to form tetramethylene or --CH.sub.2 OCR.sub.8 R.sub.9 O-- (R.sub.8 and R.sub.9 are alkyl); R.sub.3 is H, alkyl or hydroxyalkyl; R.sub.4 is H or alkyl; R.sub.5 is phenyl, heteroaryl or --(CH.sub.2).sub.m --CHR.sub.10 R.sub.11 (R.sub.10 is H or phenyl, R.sub.11 is phenyl or pyridyl and m is 0 to 2); p is 0 or 1; and q is 2 or 3; the phenyl group or moiety being optionally substituted, and a salt thereof, process for the preparation thereof, and pharmaceutical composition containing the same.