A chromene derivative having the general formula (I):
wherein n is 1 to 5 and -O-(CH2)n-CO2H group is attached to 5-position, 6-position, 7-position or 8-position, or salts thereof, a process for preparing the same and antiallergic agents containing the same.
The compounds of the present invention inhibit the immunological release of chemical mediators such as SRS-A and histamine from mast cell and have an excellent effect in preventing and treating the various allergic diseases such as allergic asthma, allergic dermatitis, allergic nasitis, hives, allergic enteritis and allergic conjunctivitis, especially allergic asthma.
一种具有通式(I)的色
烯衍
生物:
其中 n 为 1 至 5,-O-(
CH2)n-CO2H 基团连接在 5-位、6-位、7-位或 8-位上,或其盐类,以及制备方法和含有这些衍
生物的抗过敏制剂。
本发明的化合物可抑制肥大细胞释放 SRS-A 和
组胺等
化学介质的免疫性释放,对预防和治疗过敏性哮喘、过敏性皮炎、过敏性鼻炎、荨麻疹、过敏性肠炎和过敏性结膜炎等各种过敏性疾病,尤其是过敏性哮喘有很好的效果。