The invention is concerned with novel heterocyclyl substituted 1-alkoxy
acetic acid derivatives of formula (I) ##STR00001## wherein R.sup.1 to
R.sup.6 and A are as defined in the description and in the claims, as
well as physiologically acceptable salts thereof. These compounds inhibit
the formation of coagulation factors Xa, IXa and thrombin induced by
factor VIIa and tissue factor and can be used as medicaments.