HYDROXYTETRAHYDROPYRAN-2-ONES THE CORRESPONDING DIHYDROXY-CARBOXYLIC ACID DERIVATIVES,SALTS AND ESTERS,PROCESSES OF PREPARATION,PHARMACEUTICAL COMPOSITIONS AND NOVEL PHENOLS AND THIOPHENOLS

摘要

Compounds of the general formula I and the corresponding open-chain dihydroxy carboxylic acids of the formula II in which X, Y and Z have the stated meanings, and their pharmacologically tolerated salts with bases and their pharmacologically tolerated esters, process for preparing this compound, its use as pharmaceutical and pharmaceutical products are described. Also described are phenols and thiophenols of the formula III in which X, Y and Z have the stated meanings.