Heterocyclically substituted methoxyphenyl derivatives with an oxo group, processes for preparation thereof and use thereof as medicamentsThe invention relates to heterocyclically substituted methoxyphenyl derivatives with an oxo group, and to physiologically compatible salts thereof.The invention relates to compounds of the formula Iin which R1, R2, R3, R4, R10, X, n, B1, B2, B3 and B4 are each defined as specified, and to the physiologically compatible salts thereof. The compounds are suitable, for example, for treatment of diabetes.