125734-87-4Relevant academic research and scientific papers
Calcium entry blockers and activators: Conformational and structural determinants of dihydropyrimidine calcium channel modulators
Rovnyak,Kimball,Beyer,Cucinotta,DiMarco,Gougoutas,Hedberg,Malley,McCarthy,Zhang,Moreland
, p. 119 - 129 (2007/10/02)
Dihydropyrimidines 4, 6, and 15, uniquely designed to unambiguously establish structural and conformational determinants for DHP receptor occupation and for modulation of calcium channel function, were prepared and examined for calcium channel modulation.
Dihydropyrimidine calcium channel blockers: 2-Heterosubstituted 4-aryl-1,4-dihydro-6-methyl-5-pyrimidinecarboxylic acid esters as potent mimics of dihydropyridines
Atwal,Rovnyak,Schwartz,Moreland,Hedberg,Gougoutas,Malley,Floyd
, p. 1510 - 1515 (2007/10/02)
2-Heterosubstituted-4-aryl-1,4-dihydro-6-methyl-5- pyrimidinecarboxylic acid esters 8, which lack the potential C(s) symmetry of dihydropyridine calcium channel blockers, were prepared and evaluated for biological activity. Biological assays using potassium-depolarized rabbit aorta and radioligand binding techniques showed that some of these compounds are potent mimics of dihydropyridine calcium channel blockers. The combination of a branched ester (e.g. isopropyl, sec-butyl) and an alkylthio group (e.g. SMe) was found to be optimal for biological activity. When compared directly with similarly substituted 2-heteroalkyldihydropyridines 9, dihydropyrimidines 8 were found to be 30-fold less active. The solid-state structure of dihydropyrimidine analogue 8g shows that these compounds can adopt a molecular conformation which is similar to the reported conformation of dihydropyridine calcium channel blockers.
