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Crystallization of Membrane Proteins in Lipidic Mesophases
Published on: March 28, 2011
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Exploring the molecular reorientations in amorphous rosuvastatin calcium
N M Belozerova1, P Bilski1,2, M Jarek3
1Frank Laboratory of Neutron Physics, Joint Institute for Nuclear Research 141980 Dubna Moscow Region Russia.
RSC Advances
|May 6, 2022
Summary
Molecular dynamics in rosuvastatin calcium, a cardiovascular drug, were studied using solid-state NMR. Key findings reveal methyl and isopropyl group reorientations influenced by isomer type and water content.
Area of Science:
- Solid-state chemistry
- Pharmaceutical sciences
- Molecular dynamics
Background:
- Rosuvastatin calcium is a critical medication for cardiovascular disease prevention.
- Understanding its molecular dynamics is crucial for drug stability and efficacy.
Purpose of the Study:
- To investigate the molecular reorientations and internal dynamics of rosuvastatin calcium.
- To correlate molecular mobility with drug isomerism and hydration.
Main Methods:
- Solid-state 1H and 13C Nuclear Magnetic Resonance (NMR) spectroscopy.
- Computational analysis of steric hindrances.
- Variable-temperature relaxation studies.
Main Results:
- Identified reorientational dynamics of methyl and isopropyl groups within rosuvastatin calcium.
- Determined energy barriers for these reorientations.
- Demonstrated dependence of dynamics on E/Z isomerism and water content.
Conclusions:
- Provided a comprehensive understanding of molecular mobility in rosuvastatin calcium.
- Established a link between molecular dynamics, isomerism, and hydration.
- Insights facilitate improved pharmaceutical solid-state characterization.
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