Benzopyran compounds, pharmaceutical compositions containing them and methods of use

Claim 1

Benzopyranyl ether compound of the formula ##STR5## wherein A is alkylene or 2 to 4 carbons; and R is hydrogen or acyl selected from the group consisting of substituted or unsubstituted alkanoyl radicals containing up to 5 carbon atoms, wherein the substituents are selected from fluorine, chlorine, bromine, phenyl or naphthyl; substituted or unsubstituted lower alkenoyl radicals containing 3 to 6 carbon atoms, wherein the substituents are selected from substituted or unsubstituted phenyl wherein the substituents are selected from hydroxyl, halogen, alkyl containing up to 6 carbon atoms and alkoxy containing up to 6 carbon atoms unsubstituted or substituted benzoyl, or naphthoyl wherein the substituents are fluorine, chlorine, bromine, hydroxyl, lower alkyl, lower alkoxy, lower alkoxycarbonyl, lower alkanoyloxy, carboxyl, nitro, amino, lower alkanoylamino, nitrile, trifluoromethyl, carbamoyl, lower alkylthio, lower alkylsulphinyl, lower alkylsulphonyl, lower alkanoyl, benzoyl, hydroxy lower alkyl or lower alkoxy lower alkyl; furancarbonyl, thiophenecarbonyl, pyridinecarbonyl, tetrahydrofuran-carbonyl, tetrahydrothiophene-carbonyl or C 3 -C 7 cycloalkylcarbonyl; or benzene-sulphonyl or methane sulphonyl, and salts thereof with pharmacologically acceptable acids.