| abstract |
Compounds of the formula (A), and pharmaceutically acceptable salts and prodrugs thereof, wherein X1, Ar, X, Y?1, R1, R2, R3, R5¿ and n are defined below, which are inhibitors of the production of leukotrienes and/or blockers of leukotriene receptors, methods for preparing said compounds and intermediates useful in the preparation thereof, pharmaceutical compositions thereof methods of treatment therewith. The compounds of the above formula are useful in the prevention or treatment of asthma, arthritis, psoriasis, ulcers, myocardial infarction and related diseases in mammals. |