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Huseynzada A, Aghayev M, Hajiyeva S, Israyilova A, Sayin K, Gasimov E, Rzayev F, Hasanova U, Eyvazova G, Abbasov V, Gakhramanova Z, Huseynova S, Huseynova P, Huseynova L, Salimova N. Synthesis, nanostructuring and in silico studies of a new imine bond containing a macroheterocycle as a promising PBP-2a non-β-lactam inhibitor. J Mater Chem B 2023; 11:8271-8280. [PMID: 37581615 DOI: 10.1039/d3tb00602f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/16/2023]
Abstract
This study is devoted to the synthesis of a 40-membered macroheterocycle with its further nanostructuring by magnetite nanoparticles. The mentioned macroheterocycle was synthesized by the [2+2] cyclocondensation of the oxygen-containing diamine with an aromatic dialdehyde in a non-catalytic medium and with no work-up procedure. The structure of the obtained macroheterocycle was studied by 1H and 13C nuclear magnetic resonance spectroscopy and matrix-assisted laser desorption/ionization-time of flight mass spectrometry. Furthermore, the nanosupramolecular complex of macroheterocycles with magnetite nanoparticles was obtained and investigated by Fourier-transform infrared and ultraviolet-visible spectroscopy methods. Shifts in the infrared spectra of the nanosupramolecular complex indicate the interaction through metal-aromatic ring non-covalent bonding. The shift is also observed for the C-O-C stretching band of ether bonds. The loading rate of macroheterocycles on magnetite nanoparticles was 18.6%. The morphology of the ensemble was studied by transmission electron microscopy, which confirmed the synthesis of nanospherical particles with a diameter range of 10-20 nm. Powder X-ray diffraction analysis showed patterns of cubic Fe3O4 nanoparticles with a crystallite size equal to 9.1 nm. The macroheterocycle and its nanosupramolecular complex were tested against Klebsiella pneumoniae, Pseudomonas aeruginosa and Staphylococcus aureus. The results have shown that the created complex has shown 64 times better activity against Staphylococcus aureus in comparison with the individual macroheterocycle and 32 times better activity in comparison with the pristine antibiotic Ampicillin as a control. In addition, computational analysis of the macroheterocycle was performed at the B3LYP/6-31G level in water. Molecular docking analyses for the macroheterocycle revealed Penicillin-binding protein PBP2a (5M18) from the transpeptidase family as a target protein in Staphylococcus aureus.
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Affiliation(s)
- Alakbar Huseynzada
- ICRL, Baku State University, Z. Khalilov 23, Baku, AZ 1148, Azerbaijan
- GPOGC SRI, Azerbaijan State Oil and Industry University, Baku, AZ 1010, Azerbaijan.
- Chemistry Department, Azerbaijan Engineers Union, Bashir Safaroglu 118, Baku, AZ 1009, Azerbaijan
- ICESCO Biomedical Materials Department, Baku State University, Z. Khalilov 23, Baku, AZ 1148, Azerbaijan
| | - Mirjavid Aghayev
- Department of Pharmaceutical Sciences, Northeast Ohio Medical University, 4209 St, OH-44, Rootstown, OH 44272, USA
| | - Sarvinaz Hajiyeva
- ICRL, Baku State University, Z. Khalilov 23, Baku, AZ 1148, Azerbaijan
- Physics Department, Kent State University, 800 E. Summit St., Kent, OH 44242, USA
| | - Aygun Israyilova
- Laboratory of Microbiology and Virology, Baku State University, Z. Khalilov 23, Baku, AZ 1148, Azerbaijan
- GPOGC SRI, Azerbaijan State Oil and Industry University, Baku, AZ 1010, Azerbaijan.
- Research Institute of Crop Husbandry, Ministry of Agriculture, Baku, AZ 1098, Azerbaijan
- ICESCO Biomedical Materials Department, Baku State University, Z. Khalilov 23, Baku, AZ 1148, Azerbaijan
| | - Koray Sayin
- Chemistry Department, Faculty of Science, Sivas Cumhuriyet University, Sivas, 58140, Turkey
| | - Eldar Gasimov
- Department of Cytology, Embryology and Histology, Azerbaijan Medical University, 163 A Samad Vurgun, Baku AZ1078, Azerbaijan
| | - Fuad Rzayev
- Laboratory of Electron Microscopy of the SRC, Azerbaijan Medical University, 163 A Samad Vurgun, Baku AZ1078, Azerbaijan
| | - Ulviyya Hasanova
- ICRL, Baku State University, Z. Khalilov 23, Baku, AZ 1148, Azerbaijan
- GPOGC SRI, Azerbaijan State Oil and Industry University, Baku, AZ 1010, Azerbaijan.
- ICESCO Biomedical Materials Department, Baku State University, Z. Khalilov 23, Baku, AZ 1148, Azerbaijan
| | - Goncha Eyvazova
- Nanoresearch Center, Baku State University, Z. Khalilov 23, Baku, AZ 1148, Azerbaijan
| | - Vagif Abbasov
- Institute of Petrochemical Processes, K. Avenue 30, Baku, AZ 1005, Azerbaijan
| | - Zarema Gakhramanova
- GPOGC SRI, Azerbaijan State Oil and Industry University, Baku, AZ 1010, Azerbaijan.
| | - Sanam Huseynova
- Department of Molecular Biology and Biotechnology, Baku State University, Z. Khalilov 23, Baku, AZ 1148, Azerbaijan
| | - Parvana Huseynova
- Chemistry Department, Ganja State University, H. Aliyev 429, Ganja, AZ 2001, Azerbaijan
| | - Lala Huseynova
- Industrial Safety and Labor Protection Department, Azerbaijan State Oil and Industry University, Baku, AZ 1010, Azerbaijan
| | - Nigar Salimova
- Petrochemical Technology and Industrial Ecology Department, Azerbaijan State Oil and Industry University, Baku, AZ 1010, Azerbaijan
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Murphy RB, Staton J, Rawal A, Darwish TA. The effect of deuteration on the keto-enol equilibrium and photostability of the sunscreen agent avobenzone. Photochem Photobiol Sci 2020; 19:1410-1422. [PMID: 32966538 DOI: 10.1039/d0pp00265h] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The remarkable properties of deuterium have led to many exciting and favourable results in enhancing material properties, for applications in the physical, medical, and biological sciences. Deuterated isotopologues of avobenzone, a sunscreen active ingredient, were synthesised to examine for any changes to the equilibrium between the diketone and enol isomers, as well as their UV photostability and photoprotective properties. Prior to UV irradiation, deuteration of the diketone methylene/enol moiety (i.e. avobenzone-d2) led to an increase in the % diketone compared to non-deuterated, determined by 1H NMR experiments in CDCl3 and C6D12. This can be rationalised from two angles; mechanistically by a deuterium kinetic isotope effect for the CH vs. CD abstraction step during tautomerisation from the diketone to the enol, and a weaker chelating hydrogen bond for the enol when deuterated allowing increased equilibration to the diketone. Avobenzone-d2 was further examined by solid state 13C NMR. The higher % diketone for avobenzone-d2 was postulated to favour increased photodegradation by a non-reversible pathway. This was investigated by UV irradiation of the avobenzone isotopologues in C6D12, both in real time in situ within the NMR by fibre optic cable as well as ex situ using sunlight. An increase in the relative amount of photoproducts for avobenzone-d2 compared to non-deuterated was observed by 1H NMR upon UV irradiation ex situ. Overall, the study demonstrates that deuteration can be applied to alter complex equilibria, and has potential to be manifested as changes to the properties and behaviour of materials.
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Affiliation(s)
- Rhys B Murphy
- Australian Nuclear Science and Technology Organisation, Locked Bag 2001, Kirrawee DC, NSW 2232, Australia.
| | - John Staton
- Eurofins Dermatest, 20 King Street, Rockdale, New South Wales 2216, Australia
| | - Aditya Rawal
- Nuclear Magnetic Resonance Facility, Mark Wainwright Analytical Centre, University of New South Wales, Sydney, Australia
| | - Tamim A Darwish
- Australian Nuclear Science and Technology Organisation, Locked Bag 2001, Kirrawee DC, NSW 2232, Australia.
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