| abstract |
A coumpound of formula (I):n or a salt, ester or amide thereof, in wich Y is a group -O(CH 2 )m-, -(CH 2 )m- or -CH=CH-,where m is an integer of from 1 to 5 n is an integer of from 4 to 14 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 the treatment of allergic diseases. |