Synthesis, calcium-channel blocking activity, and conformational analysis of some novel 1,4-dihydropyridines: application of PM3 and DFT computational methods
calcium-channel blocking evaluation and conformationalanalysis using semi-empirical (PM3) and density functional theory (DFT) as computational methods. All molecules had a boat-like 1,4-dihydropyridine ring in both the methods. In PM3 method almost 54% of the molecules were deviated from planarity, but in DFT method all the molecules had perfect flattened-boat conformation. Using both the methods, the C-4