1
|
Yadav T, Vishwkarma A, Mandal M, Karmakar I, Pathak A, Brahmachari G, Tripathi P, Maddheshiya A, Yadav N, Mahapatra C. Molecular modeling, vibrational dynamics and NBO analysis of a synthetic bio-relevant warfarin analog. J Mol Struct 2023. [DOI: 10.1016/j.molstruc.2023.135347] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/14/2023]
|
2
|
Kumar A, Singh P, Kumar R, Yadav P, Jaiswal A, Kumar Tewari A. An Experimental and Theoretical Study of the Conformational Stability of Triazinone Fleximers: Quantitative Analysis for Intermolecular Interactions. ChemistrySelect 2023. [DOI: 10.1002/slct.202203862] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- Akhilesh Kumar
- Department of Chemistry (Center of Advanced Studies) Institute of Science Banaras Hindu University Varanasi 221005
| | - Praveen Singh
- Department of Chemistry Dayanand Vedic College Orai Jaluan 285001
| | - Ranjeet Kumar
- Department of Chemistry C. M. P. Degree College Prayagraj 211002 India
| | - Priyanka Yadav
- Department of Chemistry (Center of Advanced Studies) Institute of Science Banaras Hindu University Varanasi 221005
| | - Amit Jaiswal
- Department of Chemistry C. M. P. Degree College Prayagraj 211002 India
| | - Ashish Kumar Tewari
- Department of Chemistry (Center of Advanced Studies) Institute of Science Banaras Hindu University Varanasi 221005
| |
Collapse
|
3
|
Rao PVR, Srishailam K, Reddy BV, Rao GR. Theoretical (DFT) and experimental (FT-IR & FT Raman) approach to investigate the molecular geometry and vibrational properties of 2,5- and 2,6-dihydroxytoluenes. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2021.130617] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
|
4
|
Yadav T, Brahmachari G, Karmakar I, Yadav P, Prasad A, Pathak A, Agarwal A, Kumar R, Mukherjee V, Pandey G, Bento R, Yadav N. Conformational and vibrational spectroscopic investigation of N-n‑butyl, S-2-nitro-1-(p-tolyl)ethyl dithiocarbamate – a bio-relevant sulfur molecule. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2021.130450] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
|
5
|
Structural confirmation of biorelevant molecule N-iso-butyl, S-2-nitro-1-phenylethyl dithiocarbamate in gas phase and effect of fluorination. Chem Phys Lett 2021. [DOI: 10.1016/j.cplett.2020.138124] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
|
6
|
Dimić D, Milanović Ž, Jovanović G, Sretenović D, Milenković D, Marković Z, Dimitrić Marković J. Comparative antiradical activity and molecular Docking/Dynamics analysis of octopamine and norepinephrine: the role of OH groups. Comput Biol Chem 2019; 84:107170. [PMID: 31810852 DOI: 10.1016/j.compbiolchem.2019.107170] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2019] [Revised: 11/15/2019] [Accepted: 11/18/2019] [Indexed: 12/20/2022]
Abstract
Octopamine is a neurotransmitter in invertebrates and a phenol analog of norepinephrine. The crystallographic and spectral (UV-visUV, and NMR) characteristics of octopamine were investigated experimentally and theoretically by applying appropriate level of theory, B3LYP-D3BJ/6-311++G(d,p), which reproduced well the experimental bond lengths and angles. The intramolecular interactions governing the stability of conformers were described by NBO and QTAIM analyses. The antiradical potencies of octopamine and norepinephrine towards DPPH and ABTS+ were examined with special emphasis on the preferred mechanism and effect of catechol moiety. Several techniques were used to distinguish Hydrogen Atom Transfer (HAT) and Proton Coupled Electron Transfer (PCET) mechanisms for reaction with DPPH. The calculated rate constants of the reactions with both radicals showed that Sequential Proton Loss Electron Transfer (SPLET) mechanism was dominant both thermodynamically and kinetically, with values of thermodynamic functions and rate constants clearly proving the importance of the second hydroxyl group in structure. The Molecular Docking and afterward Molecular Dynamics calculations of formed complexes between octopamine/norepinephrine with β1- and β2- adrenergic receptors examined in details the interactions that lead to the formation of stable complexes. The number of strong interactions of amino acids with norepinephrine was higher, but the absence of hydroxyl group in octopamine did not lead to a significant change in the type of interactions and stability. The formed complexes showed higher flexibility of amino acids, similar compactness of structure as proteins and increased interatomic distances of the backbone when compared to pure proteins.
Collapse
Affiliation(s)
- Dušan Dimić
- Faculty of Physical Chemistry, University of Belgrade, 12-16 Studentski trg, 11000, Belgrade, Republic of Serbia
| | - Žiko Milanović
- Bioengineering Research and Development Center, Prvoslava Stojanovića 6, 34000, Kragujevac, Republic of Serbia
| | - Goran Jovanović
- Faculty of Physical Chemistry, University of Belgrade, 12-16 Studentski trg, 11000, Belgrade, Republic of Serbia
| | - Dragana Sretenović
- Faculty of Physical Chemistry, University of Belgrade, 12-16 Studentski trg, 11000, Belgrade, Republic of Serbia
| | - Dejan Milenković
- Bioengineering Research and Development Center, Prvoslava Stojanovića 6, 34000, Kragujevac, Republic of Serbia; Institute for Information Technologies, Department of Science, University of Kragujevac, Republic of Serbia
| | - Zoran Marković
- Institute for Information Technologies, Department of Science, University of Kragujevac, Republic of Serbia; Department of Chemical-Technological Sciences, State University of Novi Pazar, Vuka Karadžića bb, 36300, Novi Pazar, Republic of Serbia
| | - Jasmina Dimitrić Marković
- Faculty of Physical Chemistry, University of Belgrade, 12-16 Studentski trg, 11000, Belgrade, Republic of Serbia.
| |
Collapse
|