A. Andreani et al., SYNTHESIS AND CARDIOTONIC ACTIVITY OF ARYL-SUBSTITUTED OR PYRIDYL-SUBSTITUTED FUSED IMIDAZOLES, European journal of medicinal chemistry, 29(5), 1994, pp. 339-342
The syntheses of 4 different fused imidazoles bearing a 2,5-dimethoxyp
henyl group or a pyridyl group are reported. All the heterocycles, exc
ept 2a, display positive inotropic activity. Some are approximately eq
uipotent with sulmazole, and the imidazo[2,1-b]benzothiazole that bear
s a 4-pyridyl group is the most active of whole series.