Certain oxopyrolo-pyrrole derivatives having thrombin inhibiting activity

摘要

Compounds of the formula wherein R1 is lower-alkyl, cycloalkyl or phenyl, R2 is H, OH or C(O)O-A, wherein A is lower-alkyl, cycloalkyl or phenyl, and R3, R4 and R5 are either methyl or R3 is H and R4 and R5 taken together are trimethylene as well as hydrates or solvates and physiologically usable salts thereof can be used for the production of medicaments for the treatment or prophylaxis of illnesses which are caused by thrombin-induced platelet aggregation or fibrinogen clotting in blood plasma.