The creating a pharmaceutical composition comprising as an active ingredient the compound and azaindole derivatives having DP receptor antagonist activity and provide allergy agent. The general formula (I): (Wherein ring A is an aromatic carbon ring, and the like nitrogen-containing non-aromatic heterocyclic ring of 3 to 8-membered ring B formula: 4 -X 1 = X 2 -X 3 = X - expression: -C and independently represent a hydrogen atom, R 1, R 2, R 3, R 4, R 5 is a halogen atom or the like (R 1) = C (R 2) -C (R 3) = N- equal R R 9 is carboxy, etc. M sulfonyl such as C1-C6 alkyloxy such as 6 may be substituted R 7 are independently each a halogen atom or the like substituted alkyl such as R 8 may be substituted Y is a single bond or the like compound represented by 0, etc.) q, L 1, L 2, and an alkylene such as a single bond, a hetero atom may have an intervening 1-2 pieces L 3 n is 0, etc. hydrate or their salts, its pharmaceutically acceptable.DP受容体アンタゴニスト活性を有するアザインドール誘導体及び該化合物を有効成分として含有する医薬組成物を創製し、アレルギー性疾患治療剤を提供する。一般式(I):(式中、環Aは芳香族炭素環等;環Bは3~8員の含窒素非芳香族複素環等;式:-X1=X2-X3=X4-は式:-C(R1)=C(R2)-C(R3)=N-等;R1、R2、R3、R4、及びR5はそれぞれ独立して、水素原子、ハロゲン原子等;R6は置換されていてもよいC1-C6アルキルオキシ等;R7はそれぞれ独立して、ハロゲン原子等;R8は置換されていてもよいアルキル等;R9はカルボキシ等;Mはスルホニル等;Yは単結合等;L1、L2、及びL3は単結合、ヘテロ原子が1~2個介在していてもよいアルキレン等;nは0等;qは0等)で示される化合物、その製薬上許容される塩、又はそれらの水和物。
