N-Benzoylureidocinnamic acid derivatives, processes for preparing them and their use The invention relates to N-benzoylureidocinnamic acid derivatives and to their physiologically tolerated salts and physiologically functional derivatives. The invention thus relates to compounds of formula I, ##STR1##

in which the radicals have the given meanings, and to their physiologically tolerated salts and processes for preparing them. The compounds are, for example, suitable for use as antidiabetic agents.