A computational study of intramolecular hydrogen bonds breaking/formation: impact on the structural flexibility of the ranitidine molecule

Verfasser / Beitragende:
[Mariana Kozlowska, Jakub Goclon, Pawel Rodziewicz]
Ort, Verlag, Jahr:
2015
Enthalten in:
Journal of Molecular Modeling, 21/4(2015-04-01), 1-11
Format:
Artikel (online)
ID: 605512744
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024 7 0 |a 10.1007/s00894-015-2591-7  |2 doi 
035 |a (NATIONALLICENCE)springer-10.1007/s00894-015-2591-7 
245 0 2 |a A computational study of intramolecular hydrogen bonds breaking/formation: impact on the structural flexibility of the ranitidine molecule  |h [Elektronische Daten]  |c [Mariana Kozlowska, Jakub Goclon, Pawel Rodziewicz] 
520 3 |a Ranitidine is a histamine H2-receptor antagonist that reduces gastric acid secretion. We studied the flexibility of the ranitidine molecule with the special focus on the network of diverse intramolecular hydrogen bonds: N-H ⋯O, N-H ⋯N, C-H ⋯O, C-H ⋯N and N-H ⋯S. We performed static density functional theory calculations of global and local minima and analyzed their stability at finite temperature in the Car-Parrinello molecular dynamics simulations. We observed intramolecular H-bonds breaking/formation crucial for the structural rearrangements leading to the folding process. The lifetimes of the closed structures of ranitidine were also estimated. The existence of hydrogen bonds and their strength were confirmed on the basis of topological parameters in the bond critical points utilizing Quantum Theory of Atoms in Molecules. 
540 |a Springer-Verlag Berlin Heidelberg, 2015 
690 7 |a Ranitidine  |2 nationallicence 
690 7 |a Intramolecular hydrogen bonds  |2 nationallicence 
690 7 |a AIM analysis  |2 nationallicence 
690 7 |a Car-Parrinello molecular dynamics  |2 nationallicence 
690 7 |a Structural flexibility  |2 nationallicence 
700 1 |a Kozlowska  |D Mariana  |u Institute of Chemistry, University of Bialystok, Hurtowa 1, 15-399, Bialystok, Poland  |4 aut 
700 1 |a Goclon  |D Jakub  |u Interdisciplinary Center for Molecular Materials (ICMM), and Computer-Chemistry-Center (CCC), Friedrich-Alexander-University Erlangen-Nürnberg, Nägelsbachstr. 25, 91052, Erlangen, Germany  |4 aut 
700 1 |a Rodziewicz  |D Pawel  |u Institute of Chemistry, University of Bialystok, Hurtowa 1, 15-399, Bialystok, Poland  |4 aut 
773 0 |t Journal of Molecular Modeling  |d Springer Berlin Heidelberg  |g 21/4(2015-04-01), 1-11  |x 1610-2940  |q 21:4<1  |1 2015  |2 21  |o 894 
856 4 0 |u https://doi.org/10.1007/s00894-015-2591-7  |q text/html  |z Onlinezugriff via DOI 
898 |a BK010053  |b XK010053  |c XK010000 
900 7 |a Metadata rights reserved  |b Springer special CC-BY-NC licence  |2 nationallicence 
908 |D 1  |a research-article  |2 jats 
949 |B NATIONALLICENCE  |F NATIONALLICENCE  |b NL-springer 
950 |B NATIONALLICENCE  |P 856  |E 40  |u https://doi.org/10.1007/s00894-015-2591-7  |q text/html  |z Onlinezugriff via DOI 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Kozlowska  |D Mariana  |u Institute of Chemistry, University of Bialystok, Hurtowa 1, 15-399, Bialystok, Poland  |4 aut 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Goclon  |D Jakub  |u Interdisciplinary Center for Molecular Materials (ICMM), and Computer-Chemistry-Center (CCC), Friedrich-Alexander-University Erlangen-Nürnberg, Nägelsbachstr. 25, 91052, Erlangen, Germany  |4 aut 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Rodziewicz  |D Pawel  |u Institute of Chemistry, University of Bialystok, Hurtowa 1, 15-399, Bialystok, Poland  |4 aut 
950 |B NATIONALLICENCE  |P 773  |E 0-  |t Journal of Molecular Modeling  |d Springer Berlin Heidelberg  |g 21/4(2015-04-01), 1-11  |x 1610-2940  |q 21:4<1  |1 2015  |2 21  |o 894