Antihypertensive effects of some new nitroxyalkyl 1,4-dihydropyridine derivatives in rat model of two-kidney, one-clip hypertension

Dihydropyridine calcium channel blockers consist one of the widely-used groups of drugs for the management of hypertension. In this study, antihypertensive effects of 5 newly synthesized derivatives of DHP was examined the in rat model of two-kidney, one-clip renal hypertension. The results showed that those compounds containing two nitroxy groups had less decreasing effect on MAP (Men Arterial Pressure) compared to those having one nitroxy group in 5 position. On the other hand, conformational analysis indicated that in two compounds with two chains (A and E), a great steric hindrance existed; therefore, steric hindrance is the most important factor for interaction of compounds with their receptors.