4-Hydroxytetrahydropyran-2-ones and the corresponding dihydroxycarboxylic acid derivatives, salts and esters, process for their preparation, their use as pharmaceuticals, and pharmaceutical preparations and precursors. Compounds of the formula I ##STR1## and the corresponding open-chain dihydroxycarboxylic acids of the formula II ##STR2## in which X, Y, R.sup.1, R.sup.2, R.sup.3, R.sup.4 and R.sup.5 have the meanings indicated, and also their pharmacologically tolerable salts with bases and their pharmacologically tolerable esters, processes for the preparation of these compounds, their use as pharmaceuticals and pharmaceutical preparations are described. In addition, compounds of the formula III ##STR3## in which R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5, X and Y have the meanings indicated are described.
4-羟基
四氢吡喃-2-
酮及其对应的二羟基
羧酸衍
生物、盐和
酯,其制备方法,作为药物的用途,以及药物制剂和前体。公式I的化合物##
STR1##以及公式II的对应的开链二羟基
羧酸##
STR2##其中X、Y、R.sup.1、R.sup.2、R.sup.3、R.sup.4和R.sup.5具有指示的含义,以及它们与碱形成的药理学可耐受的盐和药理学可耐受的
酯,这些化合物的制备方法,它们作为药物的用途以及药物制剂均已描述。此外,公式III的化合物##
STR3##其中R.sup.1、R.sup.2、R.sup.3、R.sup.4、R.sup.5、X和Y具有指示的含义。