Biphenyl 5,5'-bis-alkanoic acid derivatives, their production and use thereof.

摘要

A compound of formula (I): <CHEM> in which R is C1-12 alkyl; <CHEM> lower alkyl wherein X1 and X2, which may be the same or different, are each hydrogen or a halogen; cyclohexylmethyl; cyclohexyl; tetrahydro-2H-pyran-1-yl-methyl; carboxy-lower alkyl or chloro-lower alkyl and each n, which may be the same or different, is 2 or 3, or a physiologically acceptable salt thereof.