Mannich bases obtained by aminoalkylation of 3H-pyrrolo [3, 2-f] quinoline were designed and prepared as potential vasorelaxing agents. Compounds Ia–Va were characterised by IR, 1H-NMR, mass spectral data and elemental analysis; IIb, c–Vb, c were also confirmed by 1H-NMR spectra of reaction mixtures. To estimate their vascular activity, prototypes 1-(N, N- dimethylaminomethyl)-(Ia) and 1-(4-phenyl-piperazin-1-ylmethyl)-(IVa) 3H-pyrrolo [3, 2-f] ...