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Sobornova VV, Belov KV, Krestyaninov MA, Khodov IA. Influence of Solvent Polarity on the Conformer Ratio of Bicalutamide in Saturated Solutions: Insights from NOESY NMR Analysis and Quantum-Chemical Calculations. Int J Mol Sci 2024; 25:8254. [PMID: 39125824 PMCID: PMC11311660 DOI: 10.3390/ijms25158254] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2024] [Revised: 07/25/2024] [Accepted: 07/25/2024] [Indexed: 08/12/2024] Open
Abstract
The study presents a thorough and detailed analysis of bicalutamide's structural and conformational properties. Quantum chemical calculations were employed to explore the conformational properties of the molecule, identifying significant energy differences between conformers. Analysis revealed that hydrogen bonds stabilise the conformers, with notable variations in torsion angles. Conformers were classified into 'closed' and 'open' types based on the relative orientation of the cyclic fragments. NOE spectroscopy in different solvents (CDCl3 and DMSO-d6) was used to study the conformational preferences of the molecule. NOESY experiments provided the predominance of 'closed' conformers in non-polar solvents and a significant presence of 'open' conformers in polar solvents. The proportions of open conformers were 22.7 ± 3.7% in CDCl3 and 59.8 ± 6.2% in DMSO-d6, while closed conformers accounted for 77.3 ± 3.7% and 40.2 ± 6.2%, respectively. This comprehensive study underscores the solvent environment's impact on its structural behaviour. The findings significantly contribute to a deeper understanding of conformational dynamics, stimulating further exploration in drug development.
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Affiliation(s)
| | | | | | - Ilya A. Khodov
- G.A. Krestov Institute of Solution Chemistry, Russian Academy of Sciences, Ivanovo 153045, Russia
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2
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Meenatchi V, Zo SM, Won SY, Nam JW, Cheng L, Han SS. Cuminaldehyde-3-hydroxy-2-napthoichydrazone: Synthesis, effect of solvents, nonlinear optical activity, antioxidant activity, antimicrobial activity, and DFT analysis. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2023; 302:123071. [PMID: 37390714 DOI: 10.1016/j.saa.2023.123071] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/27/2022] [Revised: 04/27/2023] [Accepted: 06/21/2023] [Indexed: 07/02/2023]
Abstract
Hydrazones derived from essential oil components have attracted considerable interest because of their antimicrobial, antioxidant, and nonlinear optical applications. In the present work, a new essential oil component derivative (EOCD), cuminaldehyde-3-hydroxy-2-napthoichydrazone (CHNH), was synthesized. EOCD was characterized by Fourier transform infrared spectroscopy, mass spectrometry, nuclear magnetic resonance (1H and 13C) spectroscopy, elemental analysis, ultraviolet-visible absorption spectroscopy, and field-emission scanning electron microscopy. Thermogravimetric analysis and X-ray diffraction showed a higher stability, phase-pure, and non-existent isomorphic phase transition in EOCD. Solvent studies indicated that the normal emission band was caused by the locally excited state and the large Stokes shifted emission originated because of the twisted intramolecular charge transfer. The EOCD possessed higher direct and indirect band gap energies of 3.05 eV and 2.90 eV respectively, as determined by the Kubelka-Munk algorithm. The outcomes of frontier molecular orbitals, global reactivity descriptors, Mulliken, and molecular electrostatic potential surface by density functional theory calculations revealed high intramolecular charge transfer, good realistic stability, and high reactiveness of EOCD. The hydrazone EOCD exhibited higher hyperpolarizability (18.248 × 10-30 esu) in comparison to urea. Antioxidant test results indicated that EOCD showed significant antioxidant activity (p < 0.05), as determined by the DPPH radical scavenging assay. The newly synthesized EOCD showed no antifungal activity against Aspergillus flavus. Additionally, the EOCD showed good antibacterial activity against Escherichia coli and Bacillus subtilis.
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Affiliation(s)
- Venkatasamy Meenatchi
- School of Chemical Engineering, Yeungnam University, Gyeongsan-si, Gyeongsangbuk-do 38541, Republic of Korea.
| | - Sun Mi Zo
- School of Chemical Engineering, Yeungnam University, Gyeongsan-si, Gyeongsangbuk-do 38541, Republic of Korea.
| | - So Yeon Won
- School of Chemical Engineering, Yeungnam University, Gyeongsan-si, Gyeongsangbuk-do 38541, Republic of Korea.
| | - Joo-Won Nam
- College of Pharmacy, Yeungnam University, Gyeongsan-si, Gyeongsangbuk-do 38541, Republic of Korea.
| | - Liang Cheng
- School of Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, China.
| | - Sung Soo Han
- School of Chemical Engineering, Yeungnam University, Gyeongsan-si, Gyeongsangbuk-do 38541, Republic of Korea.
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3
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Zavalishin MN, Gamov GA, Kiselev AN, Aleksandriiskii VV, Medvedeva AS. Vitamin B 6-based fluorescence chemosensor for selective detection of F - ions: design, synthesis, and characterization. Photochem Photobiol Sci 2023; 22:2483-2497. [PMID: 37747667 DOI: 10.1007/s43630-023-00463-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2023] [Accepted: 07/18/2023] [Indexed: 09/26/2023]
Abstract
The present paper reports on the synthesis and characterization of a new chemosensor for fluoride ions, a hydrazone derived from pyridoxal 5'-phosphate and benzothiazole. The structure of the chemosensor was confirmed using 1H and 13C NMR, FT-IR and mass spectroscopy. The conformational diversity of the chemosensor influencing the sensor activity was studied by the quantum chemistry methods on the B3LYP/6-311++G(d, p) (H, C, N, O, P, S) level, and the optimal structure of the chemosensor was chosen. The selective capability of detecting F- in the aqueous solution, which also contains Cl-, Br-, I-, NCS-, ClO4-, HSO4-, and NO3- was demonstrated. The detection limit (LOD) for fluoride ions was 0.22 µM as determined by the 3σ method. The turn-on effect in the presence of fluoride ions is based on the deprotonation of the chemosensor and its subsequent aggregation in DMSO. In addition, the chemosensor was used for the detection and estimation of F- in real samples using fluorescence spectroscopy.
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Affiliation(s)
- M N Zavalishin
- Research Institute of Thermodynamics and Kinetics of Chemical Processes, Ivanovo State University of Chemistry and Technology, Sheremetevskii Pr. 7, 153000, Ivanovo, Russia.
| | - G A Gamov
- Research Institute of Thermodynamics and Kinetics of Chemical Processes, Ivanovo State University of Chemistry and Technology, Sheremetevskii Pr. 7, 153000, Ivanovo, Russia
| | - A N Kiselev
- Research Institute of Thermodynamics and Kinetics of Chemical Processes, Ivanovo State University of Chemistry and Technology, Sheremetevskii Pr. 7, 153000, Ivanovo, Russia
| | - V V Aleksandriiskii
- Research Institute of Thermodynamics and Kinetics of Chemical Processes, Ivanovo State University of Chemistry and Technology, Sheremetevskii Pr. 7, 153000, Ivanovo, Russia
| | - A S Medvedeva
- Research Institute of Thermodynamics and Kinetics of Chemical Processes, Ivanovo State University of Chemistry and Technology, Sheremetevskii Pr. 7, 153000, Ivanovo, Russia
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Khodov IA, Belov KV, Krestyaninov MA, Dyshin AA, Kiselev MG. Investigation of the Spatial Structure of Flufenamic Acid in Supercritical Carbon Dioxide Media via 2D NOESY. MATERIALS (BASEL, SWITZERLAND) 2023; 16:ma16041524. [PMID: 36837153 PMCID: PMC9961892 DOI: 10.3390/ma16041524] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/22/2022] [Revised: 01/17/2023] [Accepted: 02/09/2023] [Indexed: 05/13/2023]
Abstract
The search for new forms of already known drug compounds is an urgent problem of high relevance as more potent drugs with fewer side effects are needed. The trifluoromethyl group in flufenamic acid renders its chemical structure differently from other fenamates. This modification is responsible for a large number of conformational polymorphs. Therefore, flufenamic acid is a promising structural modification of well-known drug molecules. An effective approach in this field is micronization, employing "green" supercritical fluid technologies. This research raises some key questions to be answered on how to control polymorphic forms during the micronization of drug compounds. The results presented in this work demonstrate the ability of two-dimensional nuclear Overhauser effect spectroscopy to determine conformational preferences of small molecular weight drug compounds in solutions and fluids, which can be used to predict the polymorphic form during the micronization. Quantitative analysis was carried out to identify the conformational preferences of flufenamic acid molecules in dimethyl sulfoxide-d6 medium at 25 °C and 0.1 MPa, and in mixed solvent medium containing supercritical carbon dioxide at 45 °C and 9 MPa. The data presented allows predictions of the flufenamic acid conformational preferences of poorly soluble drug compounds to obtain new micronized forms.
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Meenatchi V, Cheng L, Soo Han S. Twisted intramolecular charge transfer, nonlinear optical, antibacterial activity, and DFT analysis of ultrasound processed (E)-N'-(4-isopropylbenzylidene)nicotinohydrazide. J Mol Liq 2023. [DOI: 10.1016/j.molliq.2023.121489] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/19/2023]
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6
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Conformational Screening of Arbidol Solvates: Investigation via 2D NOESY. Pharmaceutics 2023; 15:pharmaceutics15010226. [PMID: 36678855 PMCID: PMC9865235 DOI: 10.3390/pharmaceutics15010226] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2022] [Revised: 12/31/2022] [Accepted: 01/07/2023] [Indexed: 01/12/2023] Open
Abstract
Understanding of the nucleation process's fundamental principles in saturated solutions is an urgent task. To do this task, it is necessary to control the formation of polymorphic forms of biologically active compounds. In certain cases, a compound can exist in a single polymorphic form, but have several solvates which can appear in different crystal forms, depending on the medium and conditions of formation, and show different pharmaceutical activity. In the present paper, we report on the analysis of Arbidol conformational preferences in two solvents of different polarities-deuterated chloroform and dimethyl sulfoxide-at 25 °C, using the 2D NOESY method. The Arbidol molecule has various solvate forms depending on the molecular conformation. The method based on the nuclear Overhauser effect spectroscopy was shown to be efficient in the analysis of complex heterocyclic compounds possessing conformation-dependent pseudo-polymorphism. It is one of the types of polymorphism observed in compounds forming crystal solvates. Combined use of NMR methods and X-ray data allowed determining of conformer populations of Arbidol in CDCl3 and DMSO-d6 which were found to be 8/92% and 37/63%, respectively. The preferred conformation in solution is the same that appears in stable crystal solvates of Arbidol.
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Acylhydrazones and Their Biological Activity: A Review. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27248719. [PMID: 36557851 PMCID: PMC9783609 DOI: 10.3390/molecules27248719] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/16/2022] [Revised: 12/02/2022] [Accepted: 12/07/2022] [Indexed: 12/13/2022]
Abstract
Due to the structure of acylhydrazones both by the pharmacophore -CO-NH-N= group and by the different substituents present in the molecules of compounds of this class, various pharmacological activities were reported, including antitumor, antimicrobial, antiviral, antiparasitic, anti-inflammatory, immunomodulatory, antiedematous, antiglaucomatous, antidiabetic, antioxidant, and actions on the central nervous system and on the cardiovascular system. This fragment is found in the structure of several drugs used in the therapy of some diseases that are at the top of public health problems, like microbial infections and cardiovascular diseases. Moreover, the acylhydrazone moiety is present in the structure of some compounds with possible applications in the treatment of other different pathologies, such as schizophrenia, Parkinson's disease, Alzheimer's disease, and Huntington's disease. Considering these aspects, we consider that a study of the literature data regarding the structural and biological properties of these compounds is useful.
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Belov KV, Batista de Carvalho LAE, Dyshin AA, Kiselev MG, Sobornova VV, Khodov IA. Conformational Analysis of Mefenamic Acid in scCO2-DMSO by the 2D NOESY Method. RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY B 2022. [DOI: 10.1134/s1990793122070028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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Meenatchi V, Soo Han S. Synthesis, conformational study and DFT analysis of novel nonlinear optically active 2r,6c-diaryl-3t-methylpiperidin-4-one N-(2′-furoyl)hydrazones. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2022.133997] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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10
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Khodov I, Belov K, Dyshin A, Krestyaninov M, Kiselev M. Pressure effect on lidocaine conformational equilibria in scCO2: A study by 2D NOESY. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.120525] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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11
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Gamov G, Kiselev A, Zavalishin M, Yarullin D. Formation and hydrolysis of pyridoxal-5’-phosphate hydrazones and Schiff bases: Prediction of equilibrium and rate constants. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.120961] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/05/2022]
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12
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Zavalishin M, Gamov G, Pimenov O, Pogonin A, Aleksandriiskii V, Usoltsev S, Marfin Y. Pyridoxal 5′-phosphate 2-methyl-3-furoylhydrazone as a selective sensor for Zn2+ ions in water and drug samples. J Photochem Photobiol A Chem 2022. [DOI: 10.1016/j.jphotochem.2022.114112] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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13
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Belov KV, Batista de Carvalho LAE, Dyshin AA, Efimov SV, Khodov IA. The Role of Hidden Conformers in Determination of Conformational Preferences of Mefenamic Acid by NOESY Spectroscopy. Pharmaceutics 2022; 14:2276. [PMID: 36365095 PMCID: PMC9696638 DOI: 10.3390/pharmaceutics14112276] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2022] [Revised: 10/20/2022] [Accepted: 10/21/2022] [Indexed: 12/25/2023] Open
Abstract
Mefenamic acid has been used as a non-steroidal anti-inflammatory drug for a long time. However, its practical use is quite limited due to a number of side effects on the intestinal organs. Conformational polymorphism provides mefenamic acid with unique properties regarding possible modifications obtained during the micronization process, which can improve pharmacokinetics and minimize side effects. Micronization can be performed by decompression of supercritical fluids; methods such as rapid expansion of the supercritical solution have proven their efficiency. However, this group of methods is poorly applicable for compounds with low solubility, and the modification of the method using a pharmaceutically suitable co-solvent may be useful. In our case, addition of only 2 mol% dimethyl sulfoxide increased the solubility remarkably. Information on the conformational state may be critically important for carrying out micronization. In this work, structural analysis and estimate of conformational preferences of mefenamic acid in dimethyl sulfoxide-d6 (at 25 °C and 0.1 MPa) and in a mixed solvent supercritical carbon dioxide + dimethyl sulfoxide-d6 (45 °C, 9 MPa) were performed based on nuclear Overhauser effect spectroscopy. Results show changes in the conformation fractions depending on the medium used. The importance of allowing for hidden conformers in estimating the conformational state was demonstrated in the analysis. Obtained results may be useful for improving micronization parameters.
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Affiliation(s)
- Konstantin V. Belov
- Krestov Institute of Solution Chemistry, Russian Academy of Sciences, 153045 Ivanovo, Russia
| | | | - Alexey A. Dyshin
- Krestov Institute of Solution Chemistry, Russian Academy of Sciences, 153045 Ivanovo, Russia
| | - Sergey V. Efimov
- Institute of Physics, Kazan Federal University, 420008 Kazan, Russia
| | - Ilya A. Khodov
- Krestov Institute of Solution Chemistry, Russian Academy of Sciences, 153045 Ivanovo, Russia
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Khodov IA, Belov KV, Krestyaninov MA, Kiselev MG. Conformational Equilibria of a Thiadiazole Derivative in Solvents of Different Polarities: an NMR Study. RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A 2022. [DOI: 10.1134/s0036024422040148] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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15
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Synthesis, spectroscopic characterization, optical, second harmonic generation and DFT analysis of 4-isopropylbenzaldehyde derived hydrazone. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2021.132068] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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16
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Belov KV, Dyshin AA, Kiselev MG, Krestyaninov MA, Sobornova VV, Khodov IA. Determination of the Spatial Structure of Lidocaine in SC-CO2 by the 2D NOESY Method. RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY B 2022. [DOI: 10.1134/s1990793121080145] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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17
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Meenatchi V, Siva S, Cheng L. Synthesis, crystal growth, spectroscopic characterization, Hirshfeld surface analysis and DFT investigations of novel nonlinear optically active 4-benzoylpyridine-derived hydrazone. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2021.130858] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
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18
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Spatial structure and conformations of hydrazones derived from pyridoxal 5′-phosphate and 2-, 3-pyridinecarbohydrazide in the light of NMR study and quantum chemical calculations. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.117372] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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19
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Gamov G, Murekhina A, Aleksandriiskii V. Dephosphorylation of pyridoxal 5′‐phosphate‐derived Schiff bases in the presence of bovine alkaline phosphatase. INT J CHEM KINET 2021. [DOI: 10.1002/kin.21541] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- George Gamov
- Research Institute of Thermodynamics and Kinetics of Chemical Processes Ivanovo State University of Chemistry and Technology Ivanovo Russia
| | - Anastasia Murekhina
- Research Institute of Thermodynamics and Kinetics of Chemical Processes Ivanovo State University of Chemistry and Technology Ivanovo Russia
| | - Viktor Aleksandriiskii
- Research Institute of Thermodynamics and Kinetics of Chemical Processes Ivanovo State University of Chemistry and Technology Ivanovo Russia
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Exposing Hidden Conformations of Carbamazepine Appearing Due to Interaction With the Solid Phase by 2D 1H- 15N HMBC NMR Spectroscopy. J Pharm Sci 2021; 110:1533-1539. [PMID: 33421434 DOI: 10.1016/j.xphs.2021.01.001] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2020] [Revised: 12/22/2020] [Accepted: 01/03/2021] [Indexed: 11/20/2022]
Abstract
Two-dimensional 1H-15N HMBC NMR spectra of the well-known anticonvulsant carbamazepine dissolved in different organic solvents, recorded on an NMR spectrometer prove the existence of hidden conformers in saturated solutions. Obtained conformer distribution arises due to the presence of the solid phase in saturated solution. A weak influence of ring currents was revealed for different molecular conformations of carbamazepine dissolved in a saturated solution, which provides a simple approach to discovering hidden conformations. Hidden conformers were found in three different solvents: dimethyl sulfoxide, chloroform, and dichloromethane.
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21
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Khodov I, Dyshin A, Efimov S, Ivlev D, Kiselev M. High-pressure NMR spectroscopy in studies of the conformational composition of small molecules in supercritical carbon dioxide. J Mol Liq 2020. [DOI: 10.1016/j.molliq.2020.113113] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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22
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Arango AM, Wist J, Ellena J, D'Vries R, Chaur MN. Multiple Reversible Dynamics of Pyrimidine Based Acylhydrazones. European J Org Chem 2020. [DOI: 10.1002/ejoc.202000553] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Alejandra M. Arango
- Departamento de Química; Facultad de Ciencias Naturales y Exactas; Universidad del Valle; A.A 25360 Cali Colombia
| | - Julien Wist
- Departamento de Química; Facultad de Ciencias Naturales y Exactas; Universidad del Valle; A.A 25360 Cali Colombia
| | - Javier Ellena
- Instituto de Física de São Carlos; Universidade de São Paulo; CEP 13566-590 São Carlos Brasil
| | - Richard D'Vries
- Facultad de Ciencias Básicas; Universidad Santiago de Cali; Cali Colombia
| | - Manuel N. Chaur
- Departamento de Química; Facultad de Ciencias Naturales y Exactas; Universidad del Valle; A.A 25360 Cali Colombia
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Gamov GA, Meshkov AN, Zavalishin MN, Petrova MV, Khokhlova AY, Gashnikova AV, Sharnin VA. Binding of pyridoxal, pyridoxal 5'-phosphate and derived hydrazones to bovine serum albumin in aqueous solution. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2020; 233:118165. [PMID: 32120288 DOI: 10.1016/j.saa.2020.118165] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/18/2019] [Revised: 02/10/2020] [Accepted: 02/16/2020] [Indexed: 06/10/2023]
Abstract
In the present paper, the kinetics of a reaction between bovine serum albumin (BSA) and pyridoxal, pyridoxal 5'-phosphate was studied, apparent rate constant of product formation and dissociation as well as binding constants were determined. Pyridoxal 5'-phosphate hydrazones of isonicotinic, picolinic, 2-furoic, thiophene-2-carboxylic, pyrazinoic acids binding to BSA was studied by spectrofluorimetry, stability constants of the associates were calculated from experimental data using maximal likelihood approach. The changes in the secondary structure of BSA induced by hydrazones addition were studied by IR spectroscopy. New freely available software for curve fitting was developed as a part of the software kit designed for the solution chemistry and used for a specific problem of this study, IR spectra processing.
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Affiliation(s)
- G A Gamov
- Research Institute of Thermodynamics and Kinetics of Chemical Processes, Ivanovo State University of Chemistry and Technology, 153000 Ivanovo, Sheremetevskii pr. 7, Russia.
| | | | - M N Zavalishin
- Research Institute of Thermodynamics and Kinetics of Chemical Processes, Ivanovo State University of Chemistry and Technology, 153000 Ivanovo, Sheremetevskii pr. 7, Russia
| | - M V Petrova
- Research Institute of Thermodynamics and Kinetics of Chemical Processes, Ivanovo State University of Chemistry and Technology, 153000 Ivanovo, Sheremetevskii pr. 7, Russia
| | - A Yu Khokhlova
- Research Institute of Thermodynamics and Kinetics of Chemical Processes, Ivanovo State University of Chemistry and Technology, 153000 Ivanovo, Sheremetevskii pr. 7, Russia
| | - A V Gashnikova
- Research Institute of Thermodynamics and Kinetics of Chemical Processes, Ivanovo State University of Chemistry and Technology, 153000 Ivanovo, Sheremetevskii pr. 7, Russia
| | - V A Sharnin
- Research Institute of Thermodynamics and Kinetics of Chemical Processes, Ivanovo State University of Chemistry and Technology, 153000 Ivanovo, Sheremetevskii pr. 7, Russia
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Gamov G, Meshkov A, Zavalishin M, Khokhlova AY, Gashnikova A, Aleksandriiskii V, Sharnin V. Protonation of hydrazones derived from pyridoxal 5′-phosphate: Thermodynamic and structural elucidation. J Mol Liq 2020. [DOI: 10.1016/j.molliq.2020.112822] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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25
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Zavalishin MN, Gamov GA, Khokhlova AY, Gashnikova AV, Sharnin VA. Stability of Co(III), Ni(II), and Cu(II) Complexes with 2-Furan- and 2-Thiophenecarboxyhydrazones of Pyridoxal 5-Phosphate in Neutral Aqueous Solutions. RUSS J INORG CHEM+ 2020. [DOI: 10.1134/s0036023620010209] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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26
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Nikitina LE, Pavelyev RS, Startseva VA, Kiselev SV, Galiullina LF, Aganova OV, Timerova AF, Boichuk SV, Azizova ZR, Klochkov VV, Huster D, Khodov IA, Scheidt HA. Structural details on the interaction of biologically active sulfur-containing monoterpenoids with lipid membranes. J Mol Liq 2020. [DOI: 10.1016/j.molliq.2019.112366] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
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