CHROMENE DERIVATIVE, PROCESS FOR PREPARING THE SAME AND ANTIALLERGIC AGENT CONTAINING THE SAME

摘要

A chromene derivative having the general formula (I): (I) wherein n is 1 to 5 and 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.