.alpha., .omega.-dicarboxylic acids and medicaments which contain these compounds

An .alpha.,.omega.-dicarboxylic acid compound of formula I' ##STR10## in which R.sub.1 and R.sub.2, which can be the same or different, signify a C.sub.1 -C.sub.6 lower alkyl group, which is unsubstituted or is substituted by hydroxyl, C.sub.1 -C.sub.6 lower alkoxy, halogen, phenyl or phenyl substituted one or more times by hydroxyl, C.sub.1 -C.sub.6 lower alkoxy, C.sub.1 -C.sub.6 lower alkyl or halogen, a C.sub.2 -C.sub.6 lower alkenyl or C.sub.2 -C.sub.6 alkynyl group;

• a C.sub.3 -C.sub.7 cycloalkyl group, a phenyl group, or a phenyl group substituted by hydroxyl, halogen, C.sub.1 -C.sub.6 lower alkyl or C.sub.1 -C.sub.6 lower alkoxy,
• X and Y, which can be the same or different, signify hydrogen, C.sub.1 -C.sub.6 lower alkyl, C.sub.1 -C.sub.6 lower alkoxy, hydroxyl, cyano, halogen, carboxyl, C.sub.1 -C.sub.6 lower alkoxycarbonyl or carbamoyl, and
• Q represents a --(CH.sub.2).sub.n --cyclohexylidene--(CH.sub.2).sub.n --, a --(CH.sub.2).sub.m --phenylene--(CH.sub.2).sub.m --, a --CH.sub.2 --CH.dbd.CH--phenylene--CH.dbd.CH--CH.sub.2 -- or a --CH.sub.2 --CH.dbd.CH--CH.sub.2 --phenylene--CH.sub.2 --CH.dbd.CH--CH.sub.2 --group, n is 2, 3 or 4 and m is 3 or 4,
• or an in vivo hydrolysable carboxylic acid derivative thereof.