8, 9-FUSED DHYDRO-BETA-CARBORIC ACID DERIVATIVE, 8, 9-FUSED 3, 4-BETA-CARBORIC ACID DERIVATIVE, PHARMACOLOGICALLY ACCEPTABLE SALTS THEREOF, PHARMACEUTICAL COMPOSITION, CLOT DISSOLVING OR PREVENTING METHOD AND PRODUCTION OF CARBORIC ACID DERIVATIVE

摘要

The invention relates to a group of new 8,9-annelated- beta -carbolines and 8,9-annelated-3,4-dihydro- beta -carbolines having interesting fibrinolytic properties. In particular the compounds can be used as orally active fibrinolytics. The compounds have the general formulae 1 and 2 CHEM wherein R2 + R3 together with the carbon atom and the nitrogen atom to which they are bound and the intermediate carbon atom constitute a heterocyclic group consisting of 5-10 ring atoms.