Abstract
Calcium is a ubiquitous second messenger. Calcium entry into the cytosol is mediated by multiple types of calcium channels each with a distinct physiological role. There exist five different types of voltage-dependent Ca2+ channel. The calcium ion channel blocking agents are a chemically, pharmacologically, and therapeutically heterogeneous group of drugs. Most calcium channel blockers decrease the force of contraction of the myocardium resulting in a decrease in blood pressure. Representative classes include: (a) dihydropyridines and (b) nondihydropyridines. Structure–activity relationship studies and the structural features that are characterized as prerequisite for the calcium ion channel-blocking activity indicate that the presence of a C-4 phenyl group is a preferential requirement to optimize the biological activity. Steric hindrance is shown to be significant. No relationship of activity is indicated with electronic or lipophilic properties.
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Abbreviations
- DHPs:
-
Dihydropyridines
- HVA:
-
High-voltage-activated
- LCC:
-
L-type Ca2+ ion channels
- LSSVM:
-
Least squares support vector machine
- QSAR:
-
Quantitative SAR structure–activity relationships
- QTMS:
-
Quantum topological molecular similarity
- SAR:
-
Structure–activity relationships
- VDCCs:
-
Voltage-dependent calcium channels
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Hadjipavlou-Litina, D. (2011). Calcium Ion Channels and Their Blockers. In: Gupta, S. (eds) Ion Channels and Their Inhibitors. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-19922-6_9
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