15534-92-6

Pharmaceutical compositions acting on the metabolism which contain as active substance bis(4-hydroxy-phenyl)alkanoic acids corresponding to the formulae I and II STR1 wherein R1 and R2 wich may be identical or different, each stands for a hydrogen or halogen atom or an alkyl group having 1 to 4 carbon atoms, R3 stands for a hydrogen atom or an alkyl group having 1 to 3 carbon atoms, R4 stands for hydroxy, alkoxy having 1 to 18 carbon atoms, phenyl-alkoxy having 1 to 4 alkyl carbon atoms, cycloalkoxy having 5 to 8 carbon atoms or a group of the formula STR2 in which Z and Z', which may be identical or different, each stands for hydrogen, alkyl of 1 to 18 carbon atoms, phenyl or cycloalkyl of 5 to 8 carbon atoms, or both together with the nitrogen atom may form a heterocyclic ring, R6 stands for an alkylene radical having 2 to 12 atoms and n stands for zero or an integer of 1 to 6, and process for preparing them.