Use of carbocyclically and heterocyclically anellated dihydropyridines in the preparation of cardioprotective agents and new heterocyclically and carbocyclically anellated dihydropyridines, processes for preparing them and intermediate stages for the preparation thereof

摘要

The carbocyclic and heterocyclic fused dihydropyridines have the formula IMAGE and their tautomeric forms have the formula II IMAGE in which A represents the fused ring systems IMAGE and X represents OR1, NHR2 or NR3R4.