| abstract |
Ortho-substituted benzoic acid derivatives of the formula I ##STR1## in which R 1 , R 2 and R 3 have the given meanings, and Q is guanidyl, and also their physiologically harmless salts, exhibit antiarrhythmic properties and act as inhibitors of the cellular Na + /H + antiporter. In addition, the compounds of the formula I, in which R 1 to R 3 and also Q have the given meanings, are suitable for use as valuable intermediates for the preparation of medicaments, in particular of inhibitors of the cellular Na + /H + antiporter. |