A compound of the formula (I):
wherein
for example, a compound below:
wherein
R1 is CH3, H or Na; and X1—X2—X3 is
or its salt or a hydrate thereof is useful as PGD2 antagonist and can be used as a drug for treating diseases in which mast cell dysfunction is involved, for example, systemic mastocytosis and disorder of systemic mast cell activation, and also tracheal contraction, asthma, allergic rhinitis, allergic conjunctivitis, urticaria, injury due to ischemic reperfusion, and as an anti-inflammatory agent. It is particularly useful in the treatment of nasal occlusion.
化合物的公式(I):其中例如下面的化合物:其中R1为
CH3,H或Na;以及X1—X2—X3或其盐或
水合物作为
PGD2拮抗剂是有用的,可用作用于治疗肥大细胞功能障碍相关疾病的药物,例如全身性肥大细胞增生症和全身性肥大细胞活化障碍,以及气道收缩、哮喘、过敏性鼻炎、过敏性结膜炎、荨麻疹、缺血再灌注损伤和作为抗炎剂。它在治疗鼻塞方面特别有用。