Boehringer Mannheim Gmbh

Epis S.a.

Bernd Hagenbruch

Johannes Pill

Ernst-Christian Witte

Karlheinz Stegmeier

Jacob Bar-Tana

Hans P Wolff

Hermann Eggerer

Karlheinz Stegmeir

Tran G Nguyen

##STR1## .alpha., .omega.-dicarboxylic acids having the general formula (I') in which: R.sub.1 and R.sub.2, which may be different or the same, represent a lower alkyl group which can be substituted by hydroxy, lower alkoxy, halogen or phenyl, the phenyl being capable of substitution one or several times by hydroxy, lower alkoxy, lower alkyl or halogen; a lower alkenyl or alkinyl group; a C.sub.3 -C.sub.7 -cyclo-alkyl group or a phenyl group possibly substituted by hydroxy, halogen, lower alkyl or lower alkoxy, and X and Y, which may be different or the same, represent hydrogen, lower alkyl, lower alkoxy, hydroxy, cyano, halogen, carboxyl, lower alkoxycarbonyl or carbamoyl, and Q represents non-ramified, saturated or unsaturated alkyl chain with 8-14 C atoms, which can be substituted, interrupted by hetero-atoms, and form part of a cyclic system, as well as their carboxylic acid derivatives in vivo, provided that when Q represents an unramified, saturated alkyl chain with 8-14 C atoms, and R.sub.1 and R.sub.2 represent methyl and Y represents hydrogen, X may not represent hydrogen, ethoxy-carbonyl, bromine, cyano or methyl, and if R.sub.1 and R.sub.2 represent methyl and X and Y hydrogen, then Q may not represent any formula (II) group. Process for their preparation and medicines containing these compounds, which have an anti-diabetic action and lower the level of lipids.

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

The present invention is concerned with new carboxylic acid derivatives, with processes for the preparation thereof and with pharmaceutical compositions for lipid depression and thrombocyte aggregation, containing them, and to methods for treating infirmaties caused by excess lipids or thrombocyte aggregation. The new carboxylic acid derivatives according to the present invention are compounds of the general formula: ##STR1## wherein A is a valency bond or a lower alkylene chain, B is a valency bond or a saturated or unsaturated lower alkylene chain, R is hydrogen, an alkyl group which can be substituted by hydroxyl, carboxyl, sulphonic acid or optionally substituted phenoxy group, or R is an aralkyl radical, the aryl moiety of which can be substituted and the alkyl moiety of which is optionally unsaturated and can contain up to 4 carbon atoms, or R is a phenacyl radical, the phenyl moiety optionally substituted, or R is an acyl radical derived from aliphatic, araliphatic or aromatic carboxylic or sulphonic acid, or R is an aryl radical optionally substituted with the proviso that when A is a valency bond, R cannot be hydrogen, methyl, ethyl, hydroxyethyl, benzyl or phenyl, and the physiologically acceptable salts, esters and amides thereof.

Piperazine-substituted aryl and aralkyl carboxylic acids useful for

The present invention provides carboxylic acid derivatives of the general formula: ##STR1## wherein R is a hydrogen atom, alkyl, a metal cation or an ammonium or alkylammonium ion, R.sub.1 is a hydrogen atom, a hydroxyl group or an alkyl, O-alkyl,O-benzyl or O-acyl radical, R.sub.2 is a hydrogen atom or an alkyl, aryl or aralkyl radical, n is 0, 1 or 2 and R.sub.3 is an acyl radical, this radical being

Carboxylic acid derivatives, processes for the preparation thereof and

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Lampertheim, Germany

Bernd Hagenbruch