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Peddiahgari Vasu GR, Motakatla Venkata KR, Kakarla RR, Ranganath KVS, Aminabhavi TM. Recent advances in sustainable N-heterocyclic carbene-Pd(II)-pyridine (PEPPSI) catalysts: A review. ENVIRONMENTAL RESEARCH 2023; 225:115515. [PMID: 36842701 DOI: 10.1016/j.envres.2023.115515] [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: 12/31/2022] [Revised: 02/11/2023] [Accepted: 02/15/2023] [Indexed: 06/18/2023]
Abstract
Various catalysts in homogeneous or heterogeneous catalysis deploy unconventional reaction pathways by lowering the activation energy (AE) barrier, controlling the selectivity, and creating environmental impact, thereby bringing about economic viability. Hence, the study of these methodologies is of immense interest. To develop a new chemistry, there is much scope for the invention of brilliant candidates that could effectively catalyze diverse reaction methodologies. The palladium-catalyzed reactions motivate interesting applications on various organic transformations under mild reaction conditions. Although phosphorous designed ligands or catalysts have been used, despite their expensiveness, sensitivity and other properties, there is the necessity of developing even better cross-coupling ligands or catalysts such as N-heterocyclic carbene (NHC)-based palladium complexes. These palladium-NHCs (Pd-NHC) are novel and universal nucleophilic entities that have come into light as the most successful class of catalysts in organometallic chemistry. In the same class, a specific category of palladium-NHCs such as palladium-pyridine enhanced pre-catalyst preparation by the stabilization initiation (palladium-PEPPSI) complexes, are emerging as versatile alternatives to phosphine containing palladium complexes for various cross-coupling reactions due to their excellent catalytic activity. Further to mention that NHCs are recently extensively used as ancillary ligands in organometallic chemistry, which includes industrial-related catalytic transformations due to strong σ-donors to metal centres. Apart from this, many NHC-metal complexes are the fascinating consideration in material science as probable metallo-pharmaceuticals. The current review offers a brief exploration of palladium-PEPPSI complexes over the past few years. Further, the synthesis of a variety of these types of catalysts, their applications in Suzuki-Miyaura, Buchwald-Hartwig, Sonogashira, Negishi couplings direct C2-arylation, O-C(O) cleavage, α-arylation/alkylation of carbonyl compounds and trans-amidation reactions via cross-coupling methodologies, which are covered. Additionally, reported recent developments on reusable heterogeneous PdPEPPSI complexes and their catalytic applications are being covered. Finally, the chiral Pd complexes and their asymmetric transformations are discussed.
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Affiliation(s)
| | | | - Raghava Reddy Kakarla
- School Chemical Biomolecular Engineering, The University of Sydney, Sydney, NSW, 2006, Australia.
| | | | - Tejraj M Aminabhavi
- Center for Energy and Environment, School of Advanced Sciences, KLE Technological University, Hubballi, 580031, Karnataka, India; Karnatak University, Dharwad, 58003, India; University Center for Research & Development (UCRO), Chandigarh University, Gharuan, Mohali, 140413, Punjab, India.
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Gök Y, Taslimi P, Şen B, Bal S, Aktaş A, Aygün M, Sadeghi M, Gülçin İ. Design, Synthesis, Characterization, Crystal Structure, In silico Studies, and Inhibitory Properties of the PEPPSI Type Pd(II)NHC Complexes Bearing Chloro/Fluorobenzyl Group. Bioorg Chem 2023; 135:106513. [PMID: 37030104 DOI: 10.1016/j.bioorg.2023.106513] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2023] [Revised: 02/26/2023] [Accepted: 03/29/2023] [Indexed: 04/03/2023]
Abstract
This work contains synthesis, characterization, crystal structure, and biological activity of a new series of the PEPPSI type Pd(II)NHC complexes [(NHC)Pd(II)(3-Cl-py)]. NMR, FTIR, and elemental analysis techniques were used to characterize all (NHC)Pd(II)(3-Cl-py) complexes. Also, molecular and crystal structures of complex 1c were established by single-crystal X-ray diffraction. Regarding the X-ray studies, the palladium(II) atom has a slightly distorted square-planar coordination environment. Additionally, the enzyme inhibitory effect of new (NHC)Pd(II)(3-Cl-py) complexes (1a-1g) was studied. They exhibited highly potent inhibition effect on acetylcholinesterase (AChE), butyrylcholinesterase (BChE) and carbonic anhydrases (hCAs) (Ki values are in the range of 0.08 ± 0.01 to 0.65 ± 0.06 µM, 10.43 ± 0.98 to 22.48 ± 2.01 µM, 6.58 ± 0.30 to 10.88 ± 1.01 µM and 6.34 ± 0.37 to 9.02 ± 0.72 µM for AChE, BChE, hCA I, and hCA II, respectively). Based on the molecular docking, among the seven synthesized complexes, 1c, 1b, 1e, and 1a significantly inhibited AChE, BChE, hCA I, and hCA II enzymes, respectively. The findings highpoint that (NHC)Pd(II)(3-Cl-py) complexes can be considered as possible inhibitors via metabolic enzyme inhibition.
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Behçet A, Taslimi P, Gök Y, Aktaş A, Taskin‐Tok T, Gülçin İ. New PEPPSI‐Pd‐NHC complexes bearing 4‐hydroxyphenylethyl group: Synthesis, characterization, molecular docking, and bioactivity properties. Arch Pharm (Weinheim) 2022; 355:e2200276. [DOI: 10.1002/ardp.202200276] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2022] [Revised: 07/28/2022] [Accepted: 07/30/2022] [Indexed: 11/10/2022]
Affiliation(s)
- Ayten Behçet
- Department of Chemistry, Faculty of Science and Arts Inonu University Malatya Türkiye
| | - Parham Taslimi
- Department of Biotechnology, Faculty of Science Bartin University Bartin Türkiye
| | - Yetkin Gök
- Department of Chemistry, Faculty of Science and Arts Inonu University Malatya Türkiye
| | - Aydın Aktaş
- Vocational School of Health Service Inonu University Malatya Türkiye
| | - Tugba Taskin‐Tok
- Department of Chemistry, Faculty of Arts and Sciences Gaziantep University Gaziantep Türkiye
- Department of Bioinformatics and Computational Biology, Institute of Health Sciences Gaziantep University Gaziantep Türkiye
| | - İlhami Gülçin
- Department of Chemistry, Faculty of Science Atatürk University Erzurum Türkiye
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Çağlılar T, Behçet A, Celepci DB, Aktaş A, Gök Y, Aygün M. Benzimidazole-functionalized PEPPSI type Pd(II)NHC complexes bearing nitrophenylethyl and hidroxyphenylethyl group: Synthesis, characterization, crystal structure and it's catalytic activity on direct arylation reaction. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2021.131137] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Hamdi N, Slimani I, Mansour L, Alresheedi F, Özdemir I, Gürbüz N. Rhodium(I) complexes with N-heterocyclic carbene ligands: synthesis, biological properties and catalytic activity in the hydrosilylation of aromatic ketones. J COORD CHEM 2021. [DOI: 10.1080/00958972.2021.1992400] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Naceur Hamdi
- Department of Chemistry, College of Sciences and Arts at Ar Rass, Qassim University, Ar Rass, Saudi Arabia
- Research Laboratory of Environmental Sciences and Technologies (LR16ES09), Higher Institute of Environmental Sciences and Technology, University of Carthage, Amilcar, Tunisia
| | - Ichraf Slimani
- Research Laboratory of Environmental Sciences and Technologies (LR16ES09), Higher Institute of Environmental Sciences and Technology, University of Carthage, Amilcar, Tunisia
| | - Lamjed Mansour
- Zoology Department, College of Science, King Saud University, Riyadh, Saudi Arabia
| | - Faisal Alresheedi
- Department of Physics, College of Science, Qassim University, Buraidah, Saudi Arabia
| | - Ismail Özdemir
- Catalysis Research and Application Center, İnönü University, Malatya, Turkey
- Faculty of Science and Art, Department of Chemistry, İnönü University, Malatya, Turkey
| | - Nevin Gürbüz
- Catalysis Research and Application Center, İnönü University, Malatya, Turkey
- Faculty of Science and Art, Department of Chemistry, İnönü University, Malatya, Turkey
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Highly efficient aqueous-phase Sonogashira coupling catalyzed by Pd-PEEPSI/PPh3 under aerobic condition. J CHEM SCI 2021. [DOI: 10.1007/s12039-021-01950-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
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Zhou Z, Xie Q, Li J, Yuan Y, Liu Y, Liu Y, Lu D, Xie Y. Glucopyranoside-Functionalized NHCs-Pd(II)-PEPPSI Complexes: Anomeric Isomerism Controlled and Catalytic Activity in Aqueous Suzuki Reaction. Catal Letters 2021. [DOI: 10.1007/s10562-021-03654-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Bal S, Demirci Ö, Şen B, Taslimi P, Aktaş A, Gök Y, Aygün M, Gülçin İ. PEPPSI type Pd(II)NHC complexes bearing chloro-/fluorobenzyl group: Synthesis, characterization, crystal structures, α-glycosidase and acetylcholinesterase inhibitory properties. Polyhedron 2021. [DOI: 10.1016/j.poly.2021.115060] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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Daşgın S, Gök Y, Barut Celepci D, Taslimi P, İzmirli M, Aktaş A, Gülçin İ. Synthesis, characterization, crystal structure and bioactivity properties of the benzimidazole-functionalized PEPPSI type of Pd(II)NHC complexes. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2020.129442] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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Yılmaz Ü, Küçükbay H. Effects of new NHC derivatives as ligands in the Suzuki–Miyaura reaction. SYNTHETIC COMMUN 2021. [DOI: 10.1080/00397911.2021.1873382] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- Ülkü Yılmaz
- Department of Engineering Basic Sciences, Faculty of Engineering and Natural Sciences, Malatya Turgut Özal University, Malatya, Turkey
| | - Hasan Küçükbay
- Department of Chemistry, Faculty of Science and Arts, İnönü University, Malatya, Turkey
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Bal S, Demirci Ö, Şen B, Taslimi P, Aktaş A, Gök Y, Aygün M, Gülçin İ. Synthesis, characterization, crystal structure, α-glycosidase, and acetylcholinesterase inhibitory properties of 1,3-disubstituted benzimidazolium salts. Arch Pharm (Weinheim) 2021; 354:e2000422. [PMID: 33427318 DOI: 10.1002/ardp.202000422] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2020] [Revised: 12/10/2020] [Accepted: 12/11/2020] [Indexed: 10/22/2022]
Abstract
Chloro-/fluorobenzyl-substituted benzimidazolium salts were synthesized from the reaction of 4-fluorobenzyl/2-chloro-4-fluorobenzyl-substituted benzimidazole and chlorinated aromatic hydrocarbons. They were characterized using various spectroscopic techniques (Fourier-transform infrared and nuclear magnetic resonance) and elemental analysis. In addition, the crystal structures of the complexes 1a -d and 2b were determined by single-crystal X-ray diffraction methods. These compounds were crystallized in the triclinic crystal system with a P-1 space group. The crystal packing of all complexes is dominated by O-H⋯Cl hydrogen bonds, which link the water molecules and chloride anions, forming a chloride-water tetrameric cluster. These synthesized salts were found to be effective inhibitors for α-glycosidase and acetylcholinesterase (AChE), with Ki values ranging from 45.77 ± 6.83 to 102.61 ± 11.56 µM for α-glycosidase and 0.94 ± 0.14 to 10.24 ± 1.58 µM for AChE. AChE converts acetylcholine into choline and acetic acid, thus causing the return of a cholinergic neuron to its resting state. Discovering AChE and α-glycosidase inhibitors is one of the important ways to develop new drugs for the treatment of Alzheimer's disease and diabetes.
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Affiliation(s)
- Selma Bal
- Department of Chemistry, Faculty of Science and Arts, University of Kahramanmaraş Sütçü Imam, Kahramanmaraş, Turkey
| | - Özlem Demirci
- Department of Chemistry, Faculty of Science and Arts, Inonu University, Malatya, Turkey
| | - Betül Şen
- Department of Physics, Faculty of Science, Dokuz Eylül University, İzmir, Turkey
| | - Parham Taslimi
- Department of Biotechnology, Faculty of Science, Bartin University, Bartin, Turkey
| | - Aydın Aktaş
- Department of Chemistry, Faculty of Science and Arts, Inonu University, Malatya, Turkey.,Vocational School of Health Service, Faculty of Science, Inonu University, Malatya, Turkey
| | - Yetkin Gök
- Department of Chemistry, Faculty of Science and Arts, Inonu University, Malatya, Turkey
| | - Muhittin Aygün
- Department of Physics, Faculty of Science, Dokuz Eylül University, İzmir, Turkey
| | - İlhami Gülçin
- Department of Chemistry, Faculty of Science, Atatürk University, Erzurum, Turkey
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Synthesis, characterization and bioactivities of dative donor ligand N-heterocyclic carbene (NHC) precursors and their Ag(I)NHC coordination compounds. Polyhedron 2021. [DOI: 10.1016/j.poly.2020.114866] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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13
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Behçet A, Aktaş A, Gök Y, Kaya R, Taslimi P, Gülçin İ. Novel silver(I)
N
‐heterocyclic
carbene complexes bearing 2‐(4‐hydroxyphenyl)ethyl group: Synthesis, characterization, and enzyme inhibition properties. J Heterocycl Chem 2020. [DOI: 10.1002/jhet.4199] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Ayten Behçet
- Department of Chemistry, Faculty of Arts and Sciences Inönü University Malatya Turkey
| | - Aydın Aktaş
- Department of Chemistry, Faculty of Arts and Sciences Inönü University Malatya Turkey
- Vocational School of Health Service Inonu University Malatya Turkey
| | - Yetkin Gök
- Department of Chemistry, Faculty of Arts and Sciences Inönü University Malatya Turkey
| | - Rüya Kaya
- Central Research and Application Laboratory Ağri İbrahim Çeçen University Agri Turkey
- Department of Chemistry, Faculty of Sciences Atatürk University Erzurum Turkey
| | - Parham Taslimi
- Department of Biotechnology, Faculty of Science Bartin University Bartin Turkey
| | - İlhami Gülçin
- Department of Chemistry, Faculty of Sciences Atatürk University Erzurum Turkey
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Hexagonal Boron Nitride Supported N-Heterocyclic Carbene-Palladium(II): A New, Efficient and Recyclable Heterogeneous Catalyst for Suzuki–Miyaura Cross-Coupling Reaction. Catal Letters 2020. [DOI: 10.1007/s10562-020-03401-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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15
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Türker F, Bereket İ, Barut Celepci D, Aktaş A, Gök Y. New Pd-PEPPSI complexes bearing meta-cyanobenzyl-Substituted NHC: Synthesis, characterization, crystal structure and catalytic activity in direct C–H arylation of (Hetero)arenes with aryl bromides. J Mol Struct 2020. [DOI: 10.1016/j.molstruc.2019.127608] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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Şahin N, Gürbüz N, Karabıyık H, Karabıyık H, Özdemir İ. Arylation of heterocyclic compounds by benzimidazole-based N-heterocyclic carbene-palladium(II) complexes. J Organomet Chem 2020. [DOI: 10.1016/j.jorganchem.2019.121076] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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17
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New (NHC)Pd(II)(PPh3) complexes: synthesis, characterization, crystal structure and its application on Sonogashira and Mizoroki–Heck cross-coupling reactions. CHEMICAL PAPERS 2020. [DOI: 10.1007/s11696-019-00859-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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18
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Türker F, Gürses C, Barut Celepci D, Aktaş A, Ateş B, Gök Y. New morpholine‐liganded palladium(II)
N
‐heterocyclic carbene complexes: Synthesis, characterization, crystal structure, and DNA‐binding studies. Arch Pharm (Weinheim) 2019; 352:e1900187. [DOI: 10.1002/ardp.201900187] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2019] [Revised: 08/30/2019] [Accepted: 09/07/2019] [Indexed: 12/20/2022]
Affiliation(s)
- Ferhat Türker
- Department of Chemistry, Faculty of Scienceİnönü University Malatya Turkey
| | - Canbolat Gürses
- Department of Molecular Biology and Genetics, Faculty of Scienceİnönü University Malatya Turkey
| | - Duygu Barut Celepci
- Department of Physics, Faculty of ScienceDokuz Eylül University Buca Izmir Turkey
| | - Aydın Aktaş
- Department of Chemistry, Faculty of Scienceİnönü University Malatya Turkey
| | - Burhan Ateş
- Department of Chemistry, Faculty of Scienceİnönü University Malatya Turkey
| | - Yetkin Gök
- Department of Chemistry, Faculty of Scienceİnönü University Malatya Turkey
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Novel 2-aminopyridine liganded Pd(II) N-heterocyclic carbene complexes: Synthesis, characterization, crystal structure and bioactivity properties. Bioorg Chem 2019; 91:103134. [PMID: 31374523 DOI: 10.1016/j.bioorg.2019.103134] [Citation(s) in RCA: 115] [Impact Index Per Article: 23.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2019] [Revised: 07/16/2019] [Accepted: 07/18/2019] [Indexed: 11/20/2022]
Abstract
In this work, the synthesis, crystal structure, characterization, and enzyme inhibition effects of the novel a series of 2-aminopyridine liganded Pd(II) N-heterocyclic carbene (NHC) complexes were examined. These complexes of the Pd-based were synthesized from PEPPSI complexes and 2-aminopyridine. The novel complexes were characterized by using 13C NMR, 1H NMR, elemental analysis, and FTIR spectroscopy techniques. Also, crystal structures of the two compounds were recorded by using single-crystal X-ray diffraction assay. Also, these complexes were tested toward some metabolic enzymes like α-glycosidase, aldose reductase, butyrylcholinesterase, acetylcholinesterase enzymes, and carbonic anhydrase I, and II isoforms. The novel 2-aminopyridine liganded (NHC)PdI2(2-aminopyridine) complexes (1a-i) showed Ki values of in range of 5.78 ± 0.33-22.51 ± 8.59 nM against hCA I, 13.77 ± 2.21-30.81 ± 4.87 nM against hCA II, 0.44 ± 0.08-1.87 ± 0.11 nM against AChE and 3.25 ± 0.34-12.89 ± 4.77 nM against BChE. Additionally, we studied the inhibition effect of these derivatives on aldose reductase and α-glycosidase enzymes. For these compounds, compound 1d showed maximum inhibition effect against AR with a Ki value of 360.37 ± 55.82 nM. Finally, all compounds were tested for the inhibition of α-glycosidase enzyme, which recorded efficient inhibition profiles with Ki values in the range of 4.44 ± 0.65-12.67 ± 2.50 nM against α-glycosidase.
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Erdemir F, Barut Celepci D, Aktaş A, Gök Y. 2‐hydroxyethyl‐substituted (NHC)PdI
2
(pyridine) (Pd‐PEPPSI) Complexes: Synthesis, Characterization and the Catalytic Activity in the Sonogashira Cross‐coupling Reaction. ChemistrySelect 2019. [DOI: 10.1002/slct.201901033] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Fatoş Erdemir
- İnönü UniversityFaculty of ScienceDepartment of Chemistry 44280, Malatya Turkey
| | - Duygu Barut Celepci
- Dokuz Eylül UniversityFaculty of Science, Department of Physics, 35160-Buca, İzmir Turkey
| | - Aydın Aktaş
- İnönü UniversityFaculty of ScienceDepartment of Chemistry 44280, Malatya Turkey
| | - Yetkin Gök
- İnönü UniversityFaculty of ScienceDepartment of Chemistry 44280, Malatya Turkey
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Aktaş A, Noma SAA, Celepci DB, Erdemir F, Gök Y, Ateş B. New 2-hydroxyethyl substituted N-Heterocyclic carbene precursors: Synthesis, characterization, crystal structure and inhibitory properties against carbonic anhydrase and xanthine oxidase. J Mol Struct 2019. [DOI: 10.1016/j.molstruc.2019.02.063] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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Novel morpholine liganded Pd-based N-heterocyclic carbene complexes: Synthesis, characterization, crystal structure, antidiabetic and anticholinergic properties. Polyhedron 2019. [DOI: 10.1016/j.poly.2018.11.048] [Citation(s) in RCA: 59] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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23
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Aktaş A, Erdemir F, Barut Celepci D, Gök Y, Aygün M. Mixed phosphine/N-heterocyclic carbene–palladium complexes: synthesis, characterization, crystal structure and application in the Sonogashira reaction in aqueous media. TRANSIT METAL CHEM 2018. [DOI: 10.1007/s11243-018-0286-5] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Ding F, Li Y, Yan P, Deng Y, Wang D, Zhang Y, Dragutan I, Dragutan V, Wang K. Efficient Suzuki⁻Miyaura C-C Cross-Couplings Induced by Novel Heterodinuclear Pd-bpydc-Ln Scaffolds. Molecules 2018; 23:E2435. [PMID: 30249066 PMCID: PMC6222659 DOI: 10.3390/molecules23102435] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2018] [Revised: 09/16/2018] [Accepted: 09/20/2018] [Indexed: 11/16/2022] Open
Abstract
An easy access to a series of previously unreported heterodinuclear Pd-Ln compounds, Pd-bpydc-La, Pd-bpydc-Ce and Pd-bpydc-Nd (bpydc = 2,2'-bipyridine-5,5'-dicarboxylate) has been developed. The Pd-Ln hybrid networks were effectively applied as catalysts in Suzuki⁻Miyaura C-C cross-coupling reactions of 4-bromoanisole and 4-bromobenzonitrile with phenylboronic acid, under mild conditions. A systematic investigation revealed Pd-bpydc-Nd as the most active catalyst. In all cases, reaction yields varied with the base, catalyst loading and substantially augmented with temperature (from 30 to 60 °C). Substituent effects were operative when changing from 4-bromoanisole to 4-bromobenzonitrile. The key role played by the lanthanides, aromatic substrate and base, in modulating the Pd-catalytic cycle has been highlighted. Importantly, the new catalysts proved to be stable in air and vs. functionalities and are quite efficient in Suzuki⁻Miyaura carbon-carbon bond formation conducted in protic solvents.
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Affiliation(s)
- Fu Ding
- Faculty of Chemical Engineering, Shenyang University of Chemical Technology, Shenyang 110142, China.
| | - Yanli Li
- Faculty of Chemical Engineering, Shenyang University of Chemical Technology, Shenyang 110142, China.
| | - Pingxuan Yan
- Faculty of Chemical Engineering, Shenyang University of Chemical Technology, Shenyang 110142, China.
| | - Yan Deng
- Faculty of Chemical Engineering, Shenyang University of Chemical Technology, Shenyang 110142, China.
| | - Dongping Wang
- Faculty of Chemical Engineering, Shenyang University of Chemical Technology, Shenyang 110142, China.
| | - Yajing Zhang
- Faculty of Chemical Engineering, Shenyang University of Chemical Technology, Shenyang 110142, China.
| | - Ileana Dragutan
- Institute of Organic Chemistry, Romanian Academy, Spl. Independentei 202B, 060023 Bucharest, P.O.Box 35-108, Romania.
| | - Valerian Dragutan
- Institute of Organic Chemistry, Romanian Academy, Spl. Independentei 202B, 060023 Bucharest, P.O.Box 35-108, Romania.
| | - Kangjun Wang
- Faculty of Chemical Engineering, Shenyang University of Chemical Technology, Shenyang 110142, China.
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