The invention relates to compounds of the formula I ##STR1##

in which R¹, R², R³, R⁴ and X have the meaning indicated in the text. The compounds act as inhibitors of factors Xa and VIIa and can therefore be employed for the control and prevention of thromboembolic conditions such as thrombosis, myocardial infarct, arteriosclerosis, inflammation, apoplexy, angina pectoris, restenosis after angioplasty and intermittent claudication.