Patent ID: 7687539

Claim:
A method for the treatment of ocular allergy in a mammal, which comprises topically administering to the eye of the mammal a composition comprising a pharmaceutically acceptable carrier and a pharmaceutically effective amount of a compound of formula I: wherein R 1 is C 2 H 5 , CO 2 R, CH 2 OR 4 , or a carboxylate salt of formula CO 2 − R + ; R + is Li + , Na + , K + , or NH 4 + ; R is H, CH 3 , C 2 H 5 , n-C 3 H 7 , or i-C 3 H 7 ; R 4 is H, COCH 3 , or CH 3 ; and R 7 , R 8 , R 9 are independently H, CH 3 , or CH 3 CO; or R 7 and R 8 or R 8 and R 9 together constitute a carbonyl group (C═O), thus forming a cyclic carbonate; or OR 8 R 1 together form a cyclic ester (a lactone); and indicates that the OR 9 substituent can be arranged to afford the R or S absolute configuration: