Compounds of formula I ##STR1## and metabolically labile esters and amides thereof, and pharmaceutically acceptable salts thereof, in which R.sup.13, M.sup.2, X.sup.1, Z.sup.1, Z.sup.1a, X.sup.2 and A.sup.1 have the meanings given in the specification. The compounds are useful as inhibitors of the binding of fibrinogen to glycoprotein IIb/IIIa. Novel intermediates are also disclosed.
式I的化合物以及其代谢易变酯和酰胺,以及药学上可接受的盐,其中R.sup.13、M.sup.2、X.sup.1、Z.sup.1、Z.sup.1a、X.sup.2和A.sup.1的含义如规范中所述。该化合物可用作抑制
纤维蛋白原与糖蛋白IIb/IIIa结合的
抑制剂。还公开了新的中间体。