Compounds of formula (I):wherein:m and n represent 1 or 2,A represents a pyrrolyl group,X represents a C(O), S(O) or SO2 group,R1 and R2 represent an alkyl groupor, together with the nitrogen atom carrying them, form a heterocyclic group,R3 and R4, together with the atoms carrying them, form a heterocyclic group,R5 represents a hydrogen atom or an alkyl group,R6 represents a hydrogen atom or a halogen atom.Medicinal products containing the same which are useful in treating cancer.
