| abstract |
The invention concerns compounds of formula (I), in which A is an alkylene rest with 1 to 3 carbon atoms or a -CH=CH- group; B is an oxygen atom or a valency bond; m is a whole number from 0 to 5; n is 0 or 1; X is a valency bond, an oxygen atom or a sulphur atom; Y is a valency bond or a phenylene rest optionally substituted by one or more C1?-C6? alkyl, C1?-C6? alkoxy, halogen, hydroxy or aminocarbonyl; Z is hydrogen, halogen, a C1?-C6? alkyl or cyano; R is a CN, COOH, COO(C1?-C6? alkyl), CONH-tetrazolyl, CON(OH)(C1?-C6? alkyl) or 5-(1H)-tetrazolyl group and if Y is a phenylene rest, R may also be hydrogen; with the exception of the compound 4-[2-(4)-pyridinovinyl]-carboxymethoxybenzene. The invention also concerns physiologically tolerable salts of these compounds, methods of preparing them and drugs containing the compounds for the treatment of allergies. |