ETHERS AND THIOETHERS HAVING THERAPEUTICAL ACTIVITY, THEIR PREPARATION AND PHARMACEUTICAL COMPOSITIONS CONTAINING SAME

摘要

Compounds of formula I wherein Ar is an optionally substituted phenyl ring; B is a single bond, a group -(CH2OCH2)n being n = 1 or 2, a a 2,4-disubstituted-1,3-dioxolane ring or a 2,4-disubstituted-1,3-thioxolane ring, R is a single bond, an optionally substituted methylene or ethylene group and T is 2-, 3- or 4-pyridyl, an optionally salified or esterified carboxy group or a carboxyamide group. Said compounds are useful in treatment of respiratory diseases.