Tricyclic and tetracyclic derivatives of benzodiazepine, pyridodiazepine, and pyrimidodiazepine fused with 1,4-dihydropyridine derivatives are disclosed. The present derivatives can be obtained from derivatives containing a dihydropyridine ring reacting with compounds of the ortho-phenyldiamine, ortho-diaminopyridine, and ortho-diaminopyrimidine type, as well as some subsequent transformations and, tricyclic and tetracyclic derivatives can be obtained with a diazepine or diazepinone nucleus fused to a 1,4-dihydropyridine nucleus, having a substituted or unsubstituted ring of benzene, pyridine or pyrimidine. The present derivatives exhibit vascular and central nervous system therapeutic activity.
