Calcium channel antagonists discovered by a multidisciplinary approach

Area of Science:

• Medicinal Chemistry
• Pharmacology
• Spectroscopy

Background:

• L-type calcium channels (LTCCs) are crucial drug targets.
• Developing novel calcium entry blockers (CEBs) with diverse structures is a key pharmaceutical goal.
• Understanding ligand-channel interactions requires precise stereochemical determination.

Purpose of the Study:

• To discover novel, structurally diverse L-type calcium entry blockers (CEBs).
• To determine the absolute configuration and stereospecificity of a CEB using vibrational circular dichroism (VCD) spectroscopy.
• To identify novel chemotypes for CEBs through in silico screening and in vitro validation.

Main Methods:

• Multidisciplinary approach combining spectroscopy, computational screening, and biological assays.
• Absolute configuration determination using vibrational circular dichroism (VCD) spectroscopy.
• In silico virtual screening of 340,000 compounds followed by in vitro testing of 20 prioritized hits.

Main Results:

• Discovery of novel, structurally diverse L-type calcium entry blockers (CEBs).
• Assignment of stereospecificity for ligand-channel interactions via VCD spectroscopy.
• Identification of several promising CEB hit compounds from virtual screening and in vitro assays.

Conclusions:

• The study successfully identified novel CEB chemotypes with potential therapeutic applications.
• VCD spectroscopy is a valuable tool for assigning stereochemistry in drug discovery.
• Integrated computational and experimental approaches accelerate the discovery of novel drug candidates.