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Çolak N, Savcı A, Turan N, Buldurun K. Preparation, Spectral Characterization and Antioxidant Activities of Aminothiophene-Containing Schiff Base and Co(II) and Pd(II) Complexes. J Biochem Mol Toxicol 2025; 39:e70215. [PMID: 40066706 PMCID: PMC11894587 DOI: 10.1002/jbt.70215] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2024] [Revised: 01/30/2025] [Accepted: 03/02/2025] [Indexed: 03/15/2025]
Abstract
This research focused on synthesizing a Schiff base (L) and its Co(II) and Pd(II) complexes under appropriate conditions to contribute to enhancing antioxidant activity. The ligand was synthesized by reacting methyl 2-amino-4-ethyl-5-methylthiophene-3-carboxylate with 5-bromo-2-hydroxybenzaldehyde. Various analytical techniques were employed to characterize the ligand and its resulting complexes, including microanalysis, 1H and 13C NMR spectroscopy, FTIR, electronic spectra, mass spectrometry, magnetic susceptibility, molar conductance, and thermo-gravimetric analysis. Electronic spectra and magnetic moment values were used to confirm the geometric structures of the synthesized compounds. Thermo-gravimetric analyses (TGA-DTA) were conducted to evaluate the thermal stability of the complexes. The Pd(II) complex was found to have a square planar structure, while a tetrahedral structure was suggested for the Co(II) complex. The results from the elemental analysis were consistent with both the ligand and metal complexes, showing good agreement between calculated and experimental values. The in vitro antioxidant activities of the newly synthesized compounds were examined using different antioxidant methods. Experiment results exhibited that the Pd(II) complex had better activities than the Schiff base and Co(II) complex. According to ABTS experimental results, Pd(II) complex (IC50:1.25) showed similar activity to the standards. In contrast, CUPRAC results revealed that Pd(II) complex (7.55 µg TE/mL) showed better activity than the standards. The results indicate that Pd(II) complex has strong potential as effective antioxidants, making them valuable for food and medicine applications.
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Affiliation(s)
- Naki Çolak
- Department of Chemistry, Faculty of Arts and SciencesHitit UniversityÇorumTurkey
| | - Ahmet Savcı
- Department of Molecular Biology and Genetics, Faculty of Art and ScienceMus Alparslan UniversityMusTurkey
| | - Nevin Turan
- Department of Chemistry, Faculty of Arts and SciencesMus Alparslan UniversityMusTurkey
| | - Kenan Buldurun
- Department of Medical Services and Techniques, Health Services Vocational SchoolMus Alparslan UniversityMusTurkey
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Barakat KM, Adel Elsayed S, Yılmaz M, Abdel-Latif E, Etman HA, Hamed MA, El Nemr A. Design, Synthesis and Antibacterial Assessment of Active (4-Arylazo-3-Methyl-2-Thienyl) 4-Antipyrine Ketones. Chem Biodivers 2024; 21:e202400894. [PMID: 38787357 DOI: 10.1002/cbdv.202400894] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2024] [Accepted: 05/24/2024] [Indexed: 05/25/2024]
Abstract
The chemicals formed from antipyrines are flexible organic building blocks that are employed in the development of pharmaceuticals. By diazotizing (4-arylazo-3-hydroxy-2-thienyl) 4-antipyrine ketones 1a, 1b and 1c and (4-arylazo-3-methyl-2-thienyl) 4-antipyrine ketones (2a, 2b and 2c) further replaced with six other coupling components, a broad spectrum of hybrid molecules have been created. Mass spectra, NMR, FTIR, and elemental analyses have all been used to confirm the structures of the synthesised compounds. The antimicrobial screening was investigated by agar well diffusion and diluting the broth technique against both Gram-negative and positive-tested bacterial strains. (3-methyl-5-(phenylamino)-4-(4-tolylazo)-2-thienyl) 4-antipyrine ketone (2a) was found to be superior to Ciprofloxacin against test strains: Acinetobacter sp (34.33±1.15 mm), Listeria monocytogenes (29.33±1.15 mm) and Streptococcus sp. (19.33±1.15 mm). Also, good to moderate activities were expressed as minimum inhibitory concentration (MIC) and minimum bacterial concentration (MBC) which were recorded at 9±1 to 59.67±4.51 μg/mL and 16±4 to >512 μg/mL, respectively, using compounds 2a, 2b, and 2c. MBC/MIC ratio showed, that only, 2a and 2b have a bactericidal effect but other antipyrines with bacteriostatic strength. To conclude, it was suggested that the use of these novel synthesized (4-arylazo-3-methyl-2-thienyl) 4-antipyrine ketone derivatives molecules as a new chemical class of antimicrobial agents to perform new drug discovery in pharmaceutical preparations and medicinal research.
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Affiliation(s)
- Khouloud M Barakat
- National Institute of Oceanography and Fisheries (NIOF), Kayet Bey, Elanfoushy, Alexandria, Egypt
| | - Shymaa Adel Elsayed
- National Institute of Oceanography and Fisheries (NIOF), Kayet Bey, Elanfoushy, Alexandria, Egypt
| | - Murat Yılmaz
- Osmaniye Korkut Ata University, Bahçe Vocational School, Department of Chemistry and Chemical Processing Technologies, Osmaniye, 80000, Türkiye
| | - Ehab Abdel-Latif
- Department of Chemistry, Faculty of Science, Mansoura University, ET, 35516, Mansoura, Egypt
| | - Hassan Ali Etman
- Department of Chemistry, Faculty of Science, Mansoura University, ET, 35516, Mansoura, Egypt
| | - Mohamed A Hamed
- National Institute of Oceanography and Fisheries (NIOF), Kayet Bey, Elanfoushy, Alexandria, Egypt
| | - Ahmed El Nemr
- National Institute of Oceanography and Fisheries (NIOF), Kayet Bey, Elanfoushy, Alexandria, Egypt
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Alka, Gautam S, Kumar R, Singh P, Gandhi N, Jain P. Pharmacological aspects of Co(II), Ni(II) and Cu(II) schiff base complexes: An insight. RESULTS IN CHEMISTRY 2023. [DOI: 10.1016/j.rechem.2023.100849] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/16/2023] Open
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Alanazi RLB, Zaki M, Bawazir WA. Synthesis and characterization of the new ligand, 1,2,4-triazino[5,6-b]indol-3-ylimino methyl naphthalene-2-ol and its Ni(II) and Cu(II) complexes: comparative studies of their in vitro DNA and HSA Binding. Biometals 2022; 35:1199-1223. [PMID: 36074281 DOI: 10.1007/s10534-022-00437-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2021] [Accepted: 08/16/2022] [Indexed: 12/14/2022]
Abstract
A new ligand 1,2,4-triazino[5,6-b]indol-3-ylimino methyl naphthalene-2-ol (HL) was derived from 5H-[1,2,4]triazino[5,6-b]indol-3-amine and 2-hydroxy-1-naphthaldehyde. The metal complexes of the type [Ni(L)(Bipy)]1/2SO4 (1), [Cu(L)(Bipy)(H2O)2]1/2SO4 (2), [Ni(L)(Phen)]1/2SO4 (3) and [Cu(L)(Phen)(H2O)2]1/2SO4 (4) were synthesized. The ligand (HL) and complexes 1-4 were thoroughly characterized by elemental analysis and spectroscopic methods (FT-IR, ToF-MS, 1H NMR, 13C NMR), molar conductance and magnetic moment determination. The Ni(II) complexes 1 and 3 adopt the square planar geometry and Cu(II) complexes 2 and 4 acquire distorted octahedral arrangement. In vitro DNA binding behavior of ligand (HL) and metal complexes 1-4 was explored by fluorescence spectral and ethidium bromide studies. The outcomes reveal that the complexes interact with DNA via non-covalent groove binding and electrostatic interactions. The higher binding constant (K) values of 4.35 × 104 and 9.12 × 104 M-1 for complexes 2 and 4 indicate stronger binding ability with DNA. Moreover, in vitro human serum albumin (HSA) binding experiment with HL and complexes 1-4 reveals conformational modulations in the Trp-214 microenvironments in the subdomain IIA pocket.
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Affiliation(s)
- Reem L B Alanazi
- Department of Chemistry, King Abdulaziz University, P.O. Box 80203, Jeddah, Saudi Arabia
| | - Mehvash Zaki
- Department of Chemistry, King Abdulaziz University, P.O. Box 80203, Jeddah, Saudi Arabia.
| | - Wafa A Bawazir
- Department of Chemistry, King Abdulaziz University, P.O. Box 80203, Jeddah, Saudi Arabia
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Newly synthesized lanthanides complexes of ferrocene-based Schiff base with high biological activities and improved molecular docking data. J Organomet Chem 2022. [DOI: 10.1016/j.jorganchem.2022.122450] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Jain S, Rana M, Sultana R, Mehandi R, Rahisuddin. Schiff Base Metal Complexes as Antimicrobial and Anticancer Agents. Polycycl Aromat Compd 2022. [DOI: 10.1080/10406638.2022.2117210] [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]
Affiliation(s)
- Shruti Jain
- Department of Chemistry, Jamia Millia Islamia, New Delhi, India
| | - Manish Rana
- Department of Chemistry, Jamia Millia Islamia, New Delhi, India
| | - Razia Sultana
- Department of Chemistry, Jamia Millia Islamia, New Delhi, India
| | - Rabiya Mehandi
- Department of Chemistry, Jamia Millia Islamia, New Delhi, India
| | - Rahisuddin
- Department of Chemistry, Jamia Millia Islamia, New Delhi, India
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Singh K, Siwach P. Synthesis, spectroscopic, theoretical and biological evaluation of novel Schiff base complexes of divalent transition metals. Appl Organomet Chem 2021. [DOI: 10.1002/aoc.6553] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Kiran Singh
- Department of Chemistry Kurukshetra University Kurukshetra India
| | - Preeti Siwach
- Department of Chemistry Kurukshetra University Kurukshetra India
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Al Mamari HH, Al Kiumi D, Al Rashdi T, Al Quraini H, Al Rashdi M, Al Sheraiqi S, Al Harmali S, Al Lamki M, Al Sheidi A, Al Zadjali A. Ru‐Catalyzed C(sp
2
)−H Bond Arylation of Benzamides Bearing a Novel 4‐Aminoantipyrine as a Directing Group. European J Org Chem 2021. [DOI: 10.1002/ejoc.202100513] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Hamad H. Al Mamari
- Department of Chemistry, College of Science Sultan Qaboos University PO Box 36, Al Khoudh 123 Muscat Sultanate of Oman
| | - Diana Al Kiumi
- Department of Chemistry, College of Science Sultan Qaboos University PO Box 36, Al Khoudh 123 Muscat Sultanate of Oman
| | - Tamadher Al Rashdi
- Department of Chemistry, College of Science Sultan Qaboos University PO Box 36, Al Khoudh 123 Muscat Sultanate of Oman
| | - Huda Al Quraini
- Department of Chemistry, College of Science Sultan Qaboos University PO Box 36, Al Khoudh 123 Muscat Sultanate of Oman
| | - Malak Al Rashdi
- Department of Chemistry, College of Science Sultan Qaboos University PO Box 36, Al Khoudh 123 Muscat Sultanate of Oman
| | - Sumayya Al Sheraiqi
- Department of Chemistry, College of Science Sultan Qaboos University PO Box 36, Al Khoudh 123 Muscat Sultanate of Oman
| | - Sara Al Harmali
- Department of Chemistry, College of Science Sultan Qaboos University PO Box 36, Al Khoudh 123 Muscat Sultanate of Oman
| | - Mohammed Al Lamki
- Department of Chemistry, College of Science Sultan Qaboos University PO Box 36, Al Khoudh 123 Muscat Sultanate of Oman
| | - Ahmed Al Sheidi
- Department of Chemistry, College of Science Sultan Qaboos University PO Box 36, Al Khoudh 123 Muscat Sultanate of Oman
| | - Asma Al Zadjali
- Department of Chemistry, College of Science Sultan Qaboos University PO Box 36, Al Khoudh 123 Muscat Sultanate of Oman
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