| abstract |
A compound of formula (I):n or a salt thereof,n in which Y is a group -O(CH 2 ) m CH, -(CH 2 ) m CH, or -CH=C where m is an integer of from 1 to 5, n is an integer of from 4 to 12, each of R 1 and R 2 , which may be the same or different represents hydrogen or C 1-6 alkyl, X represents a double or triple bond, and each of A and B represents hydrogen when X is a double bond, or both A and B are absent when X is a triple bond, is useful in treating allergic diseases. |