The invention relates to novel, pharmaceutically active benz[e]indene derivatives, a process for the preparation thereof, pharmaceutical compositions comprising the same, further to the use of the said benz[e]indene derivatives in the treatment of certain diseases and in the preparation of pharmaceutical compositions suitable for the treatment of said diseases.The new benz[e]indene derivatives according to the invention correspond to the general formula ##STR1## wherein A represents a group of the formula alk-NR.sup.1 R.sup.2, wherein alk represents a C.sub.2-7 alkylene group optionally carrying a hydroxy substituent,R.sup.1 and R.sup.2 are independently hydrogen, C.sub.1-7 alkyl, C.sub.2-7 alkenyl, C.sub.2-7 alkynyl, mono(C.sub.1-7)alkylamino(C.sub.1-7)alkyl, di(C.sub.1-7)alkylamino(C.sub.1-7)alkyl or C.sub.3-7 cycloalkyl; orR.sup.1 and R.sup.2 together with the nitrogen atom to which they are attached form a 4 to 7 membered ring, optionally comprising an oxygen atom or a further nitrogen atom, which latter may carry a phenyl, benzyl, pyridyl, pyrimidinyl or C.sub.1-3 alkyl substituent which substituents may, in turn, bear a hydroxy or methoxy group or a halogen atom or a halophenyl group; orR.sup.1 and R.sup.2 together with the nitrogen atom to which they are attached form a phthalimido group; orA represents pyrimidino, 2,3-epoxypropyl or a group of the formula --C(O)NHR.sup.3, whereinR.sup.3 stands for C.sub.1-7 alkyl, C.sub.2-7 alkenyl or C.sub.3-8 cycloalkyl; andR denotes hydrogen or C.sub.1-7 alkyl,stereoisomers and optically active isomers and the possible mixtures thereof, further acid addition salts and quaternary ammonium derivatives of these compounds.