Abstract: The present invention provides pyruvic acid oximes of the general formula: ##STR1## wherein R is a hydrogen atom, a C.sub.3 -C.sub.8 cycloalkyl, C.sub.1 -C.sub.6 alkoxy, cinnamyloxy, phenylamino, phenyl-N-alkylamino or phenylthio radical or an aryl or aryloxy radical, the aryl moiety of which can be substituted one or more times by C.sub.1 -C.sub.6 alkyl, C.sub.1 -C.sub.6 alkoxy, halogen, hydroxyl, trifluoromethyl, amino, acetylamino, nitrile, nitro or methylenedioxy, A is a straight-chained or branched, saturated or unsaturated aliphatic hydrocarbon chain containing up to 10 carbon atoms, which can be substituted one or more times by halogen or hydroxyl, and R.sub.1 is a C.sub.1 -C.sub.8 alkyl radical, which can be substituted one or more times by halogen, hydroxyl, nitrile, phenyl or carboxyl, or is a nitrile or formyl group, with the proviso that when R--A-- is a methyl or ethyl radical, R.sub.1 is not a methyl radical or a nitrile group and when R--A-- is a benzyl radical, R.sub.

Abstract: A pyruvic acid hydrazone derivative of the formula: ##STR1## wherein R is an aryl radical optionally substituted by lower alkyl or is an aliphatic hydrocarbon radical which can be substituted by a lower alkoxy, a cycloalkyl or an optionally substituted aryl radical,A is an alkylene radical containing 2 to 8 carbon atoms, with at least 2 carbon atoms between B and the nitrogen atom, andB is an oxygen or sulphur atom;or a physiologically acceptable salt, ester or amide thereof which possesses hypoglycaemic activity.

Abstract: Phenylacetic acid derivatives of the formula ##STR1## wherein A is an aryl radical optionally substituted by halogen, trifluoromethyl, alkyl, alkoxy, alkenyloxy, alkoxyalkoxy, alkyl-substituted amino or aryloxy, or a heterocyclic ring system optionally substituted by halogen, alkyl or alkoxy,Y is a valency bond or an optionally branched alkylene radical containing up to 3 carbon atoms, andR.sub.1 and R.sub.2 each independently is hydrogen or a lower alkyl radical,or a physiologically compatible salt or ester thereof, exhibit marked hypoglycaemic and hypolipidaemic activity.

Abstract: Phenylacetic acid derivatives of the formula ##STR1## wherein A is an aryl radical optionally substituted by halogen, trifluoromethyl, alkyl, alkoxy, alkenyloxy, alkoxyalkoxy, alkyl-substituted amino or aryloxy, or a heterocyclic ring system optionally substituted by halogen, alkyl or alkoxy,Y is a valency bond or an optionally branched alkylene radical containing up to 3 carbon atoms, andR.sub.1 and R.sub.2 each independently is hydrogen or a lower alkyl radical,or a physiologically compatible salt or ester thereof, exhibit marked hypoglycaemic and hypolipidaemic activity.

Abstract: A 2-hydrazono-propionic acid derivative of the formula ##STR1## wherein R.sub.1 and R.sub.2, each independently is hydrogen, halogen, trifluoromethyl, alkyl, hydroxyl, acyloxy or alkoxy or together are methylenedioxy, andX is an aliphatic hydrocarbon radical containing 2-4 carbon atoms and is optionally substituted by an alkyl radical in the .beta.- or .gamma.-position to the nitrogen atom,Or a physiologically compatible salt, ester or amide thereof, which exhibit hypoglycaemically activity.

Abstract: An N-substituted carboxylic acid amide of the formula ##STR1## wherein A is a valency bond or an oxygen or sulphur atom or a methylene, ethylene, vinylene, ethyleneoxa or ethylenethia radical,V is a trivalent hydrocarbon radical containing up to 4 carbon atoms,R.sub.1 and R.sub.2 each independently is hydrogen, a halogen atom, a hydroxyl group or an alkyl or alkoxy radical,R.sub.3 is hydrogen, a hydroxyl group or an alkoxy radical,Y is an alkylene radical containing up to 3 carbon atoms,X is a valency bond or a divalent aliphatic hydrocarbon radical containing up to 6 carbon atoms, andD is a hydroxymethyl, formyl, free or esterified carboxyl or an N-substituted carbamoyl radical, or a physiologically compatible salt thereof, characterized by hypoglycaemic and hypolipidaemic activity.