The invention relates to racemic or optically active 1,3,4-benzotriazepin-5(4H)-one derivatives, a process for the preparation thereof, pharmaceutical compositions comprising the same, to the use of the said compounds for the treatment of diseases and for the preparation of pharmaceutical compositions containing the said compounds as active agent.The new compounds according to the invention correspond to the general formula (I), ##STR1## wherein R.sup.1 represents hydrogen or straight or branched chain C.sub.1-4 alkyl optionally carrying a pyridyl or a phenyl substituent;R.sup.2 stands for cyanoimino;R.sup.3 denotes hydrogen or straight or branched chain C.sub.1-4 alkyl;R.sup.4 stands for C.sub.1-4 alkyl; andthe dotted line does not represent a valency bond; orR.sup.2 stands for a group of the formula R.sup.9 R.sup.10 N, whereinR.sup.9 and R.sup.10 are independently hydrogen or straight or branched chain C.sub.1-10 alkyl, orR.sup.9 R.sup.10 N together form a 5- to 7-membered heterocyclic group; orR.sup.9 R.sup.10 N together form a group of the formula N.dbd.C(NR.sup.12 R.sup.13)NH.sub.2, wherein R.sup.12 and R.sup.13 are independently hydrogen or straight or branched chain C.sub.1-10 alkyl, orNR.sup.12 R.sup.13 together form a 5- to 7-membered heterocyclic group;R.sup.4 stands for C.sub.1-4 alkyl; andthe dotted line represents a valency bond, consequently substituent R.sup.1 is missing;with the proviso that if R.sup.9 and R.sup.10 are the same, they are other than hydrogen.The 1,3,4-benzotriazepin-5(4H)-one derivatives of the general formula (I) affect the circulatory system and possess antianginal, antihypertensive and peripheral vasodilating effects.