synthesis and biological evaluation of new tricyclic dihydropyridine based derivatives on potassium channels
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abstract
the present study reports a microwave-assisted method for the synthesis of twelve novel tricyclic 1,4-dihydropyridine derivatives in which dimethyl-substituted cyclohexane and / or tetrahydrothiophene rings are fused to the dhp ring. the structures of the compounds were confirmed by spectral methods and elemental analysis. the potassium channel opening effects of the compounds were determined on rat mesenteric arteries and urinary bladders. the obtained results indicated that some compounds produced mesenteric artery-selective relaxant properties and the effects of these compounds were mediated through atp-sensitive potassium channels. the replacement of the second tetrahydrothiophene ring with dimethyl-substituted cyclohexane ring led to more active compounds. docking studies were carried out to understand the interactions of the compounds with the active site of potassium channel. the unsubstituted nitrogen atom on the 1,4-dihydropyridine ring and one of the sulfonyl oxygens were found to be important for the formation of hydrogen bonds to stabilize the compound in the center of the cavity. the nature and position of phenyl ring substituents were also effective on the activity of the compounds. finally, a theoretical study was established to predict the adme of the most active compounds.
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Journal title:
the iranian journal of pharmaceutical researchجلد ۱۵، شماره ۴، صفحات ۷۶۳-۷۷۵
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