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Duan Y, Luo S. Phase-Transfer Catalysis for Electrochemical Chlorination and Nitration of Arenes. Angew Chem Int Ed Engl 2024; 63:e202319206. [PMID: 38389503 DOI: 10.1002/anie.202319206] [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: 12/12/2023] [Revised: 02/22/2024] [Accepted: 02/22/2024] [Indexed: 02/24/2024]
Abstract
A biphasic anodic oxidation method for aromatic halogenation process was developed, where aqueous metal salts were directly used as halogen source. Ammonium salts serve as both electrolytes and phase transfer catalysis to facilitate anion transport and oxidative transformation. This design allows for chlorination or nitration of multiple types of arenes using NaCl or KNO2.
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Affiliation(s)
- Yingdong Duan
- Center of Basic Molecular Science, Department of Chemistry, Tsinghua University, Beijing, China
| | - Sanzhong Luo
- Center of Basic Molecular Science, Department of Chemistry, Tsinghua University, Beijing, China
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2
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Mohite MA, Sheokand S, Mondal D, Balakrishna MS. Catalytic utility of PNN-based Mn I pincer complexes in the synthesis of quinolines and transfer hydrogenation of carbonyl derivatives. Dalton Trans 2024; 53:5580-5591. [PMID: 38433558 DOI: 10.1039/d4dt00001c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/05/2024]
Abstract
This manuscript describes the synthesis of a triazolyl-pyridine-based phosphine, N-((diphenylphosphaneyl)methyl)-N-methyl-6-(1-phenyl-1H-1,2,3-triazol-4-yl)pyridin-2-amine, [2,6-{(PPh2)CH2N(Me)(C5H3N)(C2HN3C6H5)}] (1) (here onwards referred to as PNN) and its cationic and neutral MnI complexes and catalytic applications. The reaction of 1 with Mn(CO)5Br afforded a cationic complex [Mn(CO)3(PNN)]Br (2), which is highly stable in solid state, but in solution it gradually loses one of the CO groups to form a neutral complex [Mn(CO)2(PNN)Br] (3). Complex 2 on treatment with AgBF4 also yielded a cationic complex [Mn(CO)3(PNN)]BF4 (4). These complexes efficiently promoted the synthesis of quinoline derivatives via acceptor-less dehydrogenative coupling of 2-aminobenzyl alcohol and ketones, with complex 3 showing the highest activity with a very low catalyst loading (0.03 mol%) at 110 °C. Complex 3 (0.5 mol%) also showed excellent catalytic activity in the transfer hydrogenation of ketones and aldehydes to form respective secondary and primary alcohols.
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Affiliation(s)
- Manali A Mohite
- Phosphorus Laboratory, Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India.
| | - Sonu Sheokand
- Phosphorus Laboratory, Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India.
| | - Dipanjan Mondal
- Phosphorus Laboratory, Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India.
| | - Maravanji S Balakrishna
- Phosphorus Laboratory, Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India.
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3
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Shao C, Ma C, Li L, Liu J, Shen Y, Chen C, Yang Q, Xu T, Hu Z, Kan Y, Zhang T. Copper-promoted C5-selective bromination of 8-aminoquinoline amides with alkyl bromides. Beilstein J Org Chem 2024; 20:155-161. [PMID: 38292044 PMCID: PMC10825800 DOI: 10.3762/bjoc.20.14] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2023] [Accepted: 01/11/2024] [Indexed: 02/01/2024] Open
Abstract
An efficient and practical method for the synthesis of C5-brominated 8-aminoquinoline amides via a copper-promoted selective bromination of 8-aminoquinoline amides with alkyl bromides was developed. The reaction proceeds smoothly in dimethyl sulfoxide (DMSO) under air, employing activated and unactivated alkyl bromides as the halogenation reagents without additional external oxidants. This method features outstanding site selectivity, broad substrate scope, and excellent yields.
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Affiliation(s)
- Changdong Shao
- Jiangsu Provincial Key Laboratory for Chemistry of Low-Dimensional Materials, School of Chemistry and Chemical Engineering, Huaiyin Normal University, Huai'an, 223300, Jiangsu, China
| | - Chen Ma
- Jiangsu Provincial Key Laboratory for Chemistry of Low-Dimensional Materials, School of Chemistry and Chemical Engineering, Huaiyin Normal University, Huai'an, 223300, Jiangsu, China
| | - Li Li
- Jiangsu Provincial Key Laboratory for Chemistry of Low-Dimensional Materials, School of Chemistry and Chemical Engineering, Huaiyin Normal University, Huai'an, 223300, Jiangsu, China
| | - Jingyi Liu
- Jiangsu Provincial Key Laboratory for Chemistry of Low-Dimensional Materials, School of Chemistry and Chemical Engineering, Huaiyin Normal University, Huai'an, 223300, Jiangsu, China
| | - Yanan Shen
- Jiangsu Provincial Key Laboratory for Chemistry of Low-Dimensional Materials, School of Chemistry and Chemical Engineering, Huaiyin Normal University, Huai'an, 223300, Jiangsu, China
| | - Chen Chen
- Jiangsu Provincial Key Laboratory for Chemistry of Low-Dimensional Materials, School of Chemistry and Chemical Engineering, Huaiyin Normal University, Huai'an, 223300, Jiangsu, China
| | - Qionglin Yang
- Jiangsu Provincial Key Laboratory for Chemistry of Low-Dimensional Materials, School of Chemistry and Chemical Engineering, Huaiyin Normal University, Huai'an, 223300, Jiangsu, China
| | - Tianyi Xu
- Jiangsu Provincial Key Laboratory for Chemistry of Low-Dimensional Materials, School of Chemistry and Chemical Engineering, Huaiyin Normal University, Huai'an, 223300, Jiangsu, China
| | - Zhengsong Hu
- Jiangsu Provincial Key Laboratory for Chemistry of Low-Dimensional Materials, School of Chemistry and Chemical Engineering, Huaiyin Normal University, Huai'an, 223300, Jiangsu, China
| | - Yuhe Kan
- Jiangsu Provincial Key Laboratory for Chemistry of Low-Dimensional Materials, School of Chemistry and Chemical Engineering, Huaiyin Normal University, Huai'an, 223300, Jiangsu, China
| | - Tingting Zhang
- Jiangsu Provincial Key Laboratory for Chemistry of Low-Dimensional Materials, School of Chemistry and Chemical Engineering, Huaiyin Normal University, Huai'an, 223300, Jiangsu, China
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4
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Feng D, Xu C, Wang W, Zhan H, Ge C, Huang P. Triphosgene and Triphenylphosphine Oxide-Mediated Cascade Heterocyclization of N-Acylated Anilines: One-Pot Synthesis of 2,4-Dichloroquinolines. J Org Chem 2023; 88:14610-14618. [PMID: 37818975 DOI: 10.1021/acs.joc.3c01617] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/13/2023]
Abstract
A one-pot cascade chlorination/heterocyclization strategy has been developed for the synthesis of 2,4-dichloro-substituted quinolines from acylated anilines using triphosgene and triphenylphosphine oxide. Obviating the conventional harsh conditions of chlorination, synthetic useful quinolines with moderate to good yields were obtained through this reaction. The mechanism study exhibited that the formation of a β-enamine intermediate plays a vital role in the generation of the final product.
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Affiliation(s)
- Daming Feng
- College of Chemistry, Liaoning University, Shenyang, Liaoning 110036, P. R. China
| | - Changlin Xu
- College of Chemistry, Liaoning University, Shenyang, Liaoning 110036, P. R. China
| | - Wenhao Wang
- College of Chemistry, Liaoning University, Shenyang, Liaoning 110036, P. R. China
| | - Haoming Zhan
- College of Chemistry, Liaoning University, Shenyang, Liaoning 110036, P. R. China
| | - Chunhua Ge
- College of Chemistry, Liaoning University, Shenyang, Liaoning 110036, P. R. China
| | - Peng Huang
- College of Chemistry, Liaoning University, Shenyang, Liaoning 110036, P. R. China
- Judicial Authentication & Forensic Sciences Institute, Liaoning University, Shenyang, Liaoning 110036, P. R. China
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5
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Sakthikumar K, Kabuyaya Isamura B, Krause RWM. Exploring the antioxidant, antimicrobial, cytotoxic and biothermodynamic properties of novel morpholine derivative bioactive Mn(ii), Co(ii) and Ni(ii) complexes - combined experimental and theoretical measurements towards DNA/BSA/SARS-CoV-2 3CL Pro. RSC Med Chem 2023; 14:1667-1697. [PMID: 37731703 PMCID: PMC10508264 DOI: 10.1039/d2md00394e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2022] [Accepted: 12/07/2022] [Indexed: 09/22/2023] Open
Abstract
A novel class of bioactive complexes (1-3) [MII(L)2(bpy)], where, L = 2-(4-morpholinobenzylideneamino)phenol, bpy = 2,2'-bipyridine, MII = Mn (1), Co (2) or Ni (3), were assigned to octahedral geometry based on analytical and spectral measurements. Gel electrophoresis showed that complex (2) demonstrated significant DNA cleavage activity compared to the other complexes under the action of oxidation agent (H2O2). The DNA binding constant properties measured by various techniques were in the following sequence: (2) > (3) > (1) > (HL), which suggests that the complexes might intercalate DNA, a possibility that is also supported by their biothermodynamic characteristics. The binding constant results for BSA from electronic absorption and fluorometric titrations demonstrate that complex (2) exhibits the highest binding effectiveness among them all, which means that all the compounds could interact with BSA through a static approach, additionally supported by FRET measurements. DFT and docking calculations were employed to realize the electronic structure, reactivity, and interaction capability of all substances with DNA, BSA, and the SARS-CoV-2 main protease. These binding energies fell within the ranges -7.7 to -8.5, -8.2 to -10.1 and -6.7 to -9.3 kcal mol-1, respectively. The higher reactivity of the complexes than the ligand is supported by FMO theory. The in vitro antibacterial, cytotoxicity, and radical scavenging characteristics revealed that complexes (2-3) have better biological efficacy than the others. The cytotoxicity and binding properties also show good correlation with the partition coefficient (log P), which is encouraging because all of the experimental findings are closely correlated with the theoretical measurements.
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Affiliation(s)
- Karunganathan Sakthikumar
- Organic & Medicinal Chemistry, Department of Chemistry, Center for Chemico- and Biomedicinal Research (CCBR), Faculty of Science, Rhodes University Grahamstown 6140 Eastern Cape South Africa
| | - Bienfait Kabuyaya Isamura
- Organic & Medicinal Chemistry, Department of Chemistry, Center for Chemico- and Biomedicinal Research (CCBR), Faculty of Science, Rhodes University Grahamstown 6140 Eastern Cape South Africa
- Department of Chemistry, The University of Manchester Manchester M13 9PL UK
| | - Rui Werner Maçedo Krause
- Organic & Medicinal Chemistry, Department of Chemistry, Center for Chemico- and Biomedicinal Research (CCBR), Faculty of Science, Rhodes University Grahamstown 6140 Eastern Cape South Africa
- Center for Chemico- and Biomedicinal Research (CCBR), Faculty of Science, Rhodes University Grahamstown 6140 Eastern Cape South Africa +27 741622674 +27 46 603 7030
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6
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Study of Cyclohexane and Methylcyclohexane Functionalization Promoted by Manganese(III) Compounds. INORGANICS 2023. [DOI: 10.3390/inorganics11030105] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/06/2023] Open
Abstract
Alkane functionalization using safe and low-energy processes is of great interest to industry and academia. Aiming to contribute to the process of saturated hydrocarbon functionalization, we have studied a set of three manganese(III) complexes as catalysts for promoting the oxidation of saturated hydrocarbons (cyclohexane and methylcyclohexane) in the presence of hydrogen peroxide or trichloroisocyanuric acid (TCCA). The mononuclear manganese(III) compounds were prepared using the ligands H2LMet4 (6,6’-((1,4-diazepane-1,4-diyl)bis(methylene))bis(2,4-dimethylphenol), H2salen (2,2’-((1E,1’E)-(ethane-1,2-diylbis(azaneylylidene))bis(methaneylylidene))diphenol) and H2salan (2,2’-((ethane-1,2-diylbis(azanediyl))bis(methylene))diphenol). The catalytic processes were carried out in acetonitrile at 25 and 50 °C for 24 h. The increase in the temperature was important to get a better conversion. The compounds did not promote cyclohexane oxidation in the presence of H2O2. However, they were active in the presence of TCCA, employing a ratio of 1000:333:1 equivalents of the substrate:TCCA:catalyst. The best catalytic activity was shown by the compound [Mn(salen)Cl], reaching conversions of 14.5 ± 0.3% (25 °C) and 26.3 ± 1.1% (50 °C) (yield for chlorocyclohexane) and up to 12.1 ± 0.5% (25 °C) and 29.8 ± 2.2% (50 °C) (total yield for the mixture of the products 1-chloro-4-methylcyclohexane, 3-methylcyclohexene and 1-methylcyclohexene). The interaction of the catalysts with TCCA was studied using electron paramagnetic resonance (EPR), suggesting that the catalysts [Mn(LMet4)Cl] and [Mn(salan)Cl] act via a different mechanism from that observed for [Mn(salen)Cl].
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7
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Novel NHC-Based Au(I) Complexes as Precursors of Highly Pure Au(0) Nuggets under Oxidative Conditions. Molecules 2023; 28:molecules28052302. [PMID: 36903548 PMCID: PMC10005697 DOI: 10.3390/molecules28052302] [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: 02/01/2023] [Revised: 02/14/2023] [Accepted: 02/24/2023] [Indexed: 03/06/2023] Open
Abstract
The Lewis-acidic character and robustness of NHC-Au(I) complexes enable them to catalyze a large number of reactions, and they are enthroned as the catalysts of choice for many transformations among polyunsaturated substrates. More recently, Au(I)/Au(III) catalysis has been explored either by utilizing external oxidants or by seeking oxidative addition processes with catalysts featuring pendant coordinating groups. Herein, we describe the synthesis and characterization of N-heterocyclic carbene (NHC)-based Au(I) complexes, with and without pendant coordinating groups, and their reactivity in the presence of different oxidants. We demonstrate that when using iodosylbenzene-type oxidants, the NHC ligand undergoes oxidation to afford the corresponding NHC=O azolone products concomitantly with quantitative gold recovery in the form of Au(0) nuggets ~0.5 mm in size. The latter were characterized by SEM and EDX-SEM showing purities above 90%. This study shows that NHC-Au complexes can follow decomposition pathways under certain experimental conditions, thus challenging the believed robustness of the NHC-Au bond and providing a novel methodology to produce Au(0) nuggets.
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8
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Novel Bromo and methoxy substituted Schiff base complexes of Mn(II), Fe(III), and Cr(III) for anticancer, antimicrobial, docking, and ADMET studies. Sci Rep 2023; 13:3199. [PMID: 36823294 PMCID: PMC9950075 DOI: 10.1038/s41598-023-29386-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2022] [Accepted: 02/03/2023] [Indexed: 02/25/2023] Open
Abstract
In this study, four new Mn(II), Fe(III), and Cr(III) complexes with two Schiff base ligands namely, 4-bromo-2-[(E)-{[4-(2-hydroxyethyl)phenyl]imino}methyl]phenol (HL1) and 2-[(E)-{[4-(2-hydroxyethyl)phenyl]imino}methyl]-4-methoxy phenol (HL2) have been synthesized and characterized. Different analytical and spectral methods have been used to characterize the ligands and their complexes. General formulas of [M(L)Cl2(H2O)2] for FeL1, CrL1 and CrL2, and [M(L)Cl(H2O)3] for MnL2 were proposed. HOMO and LUMO energies, as well as the electrical characteristics, have been calculated using DFT/B3LYP calculations with Gaussian 09 program. The optimized lowest energy configurations of the complexes are proven. The disc diffusion technique was used to test the pharmacological activities' antibacterial efficacy against diverse bacterial and fungus species. The MTT technique was used to assess the in vitro cytotoxicity of the ligands and their metal complexes on the Hep-G2 human liver carcinoma cell line and the MCF-7 human breast cancer cell line. All compounds displayed better activity compared to the free ligands. MnL2 complex showed predominant activity when compared to the other complexes with an IC50 value of 2.6 ± 0.11 μg/ml against Hep-G2, and against MCF-7 the IC50 value was 3.0 ± 0.2 μg/ml which is less than the standard drug cisplatin (4.0 μg/ml). UV-vis electronic spectrum and gel electrophoresis techniques have been used to investigate the compounds' affinity to bind and cleavage CT-DNA. The interaction's binding constants, or Kb, have been identified, and it was discovered that the new complexes' binding affinities are in the order of FeL1 > MnL2 > CrL2 > CrL1, and the binding mechanism has been suggested. To assess the kind of binding and binding affinity of the investigated drugs with human DNA, a molecular docking study was carried out (PDB:1bna). The acquired results supported the intercalation binding mechanism proposed in the experimental part and revealed that complexes may be inserted into the DNA molecule to stop DNA replication. According to ADMET data, the synthesized compounds have a high bioavailability profile and their physicochemical and pharmacological features remained within Lipinski's RO5 predicted limitations.
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9
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Shao C, Xu T, Chen C, Yang Q, Tang C, Chen P, Lu M, Hu Z, Hu H, Zhang T. Copper-catalyzed selective C5-H bromination and difluoromethylation of 8-aminoquinoline amides using ethyl bromodifluoroacetate as the bifunctional reagent. RSC Adv 2023; 13:6993-6999. [PMID: 36874938 PMCID: PMC9977446 DOI: 10.1039/d3ra00088e] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2023] [Accepted: 02/13/2023] [Indexed: 03/05/2023] Open
Abstract
A simple and effective method for the copper-catalyzed selective C5-H bromination and difluoromethylation of 8-aminoquinoline amides with ethyl bromodifluoroacetate as the bifunctional reagent was developed. The combination of cupric catalyst and alkaline additive results in a C5-bromination reaction, whereas cuprous catalyst combined with silver additive results in the C5-difluoromethylation reaction. This method has a broad substrate scope and allows for easy and convenient access to desired C5-functionalized quinolones with good to excellent yields.
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Affiliation(s)
- Changdong Shao
- Jiangsu Provincial Key Laboratory for Chemistry of Low-Dimensional Materials, School of Chemistry and Chemical Engineering, Huaiyin Normal University Huai'an 223300 Jiangsu China
| | - Tianyi Xu
- Jiangsu Provincial Key Laboratory for Chemistry of Low-Dimensional Materials, School of Chemistry and Chemical Engineering, Huaiyin Normal University Huai'an 223300 Jiangsu China
| | - Chen Chen
- Jiangsu Provincial Key Laboratory for Chemistry of Low-Dimensional Materials, School of Chemistry and Chemical Engineering, Huaiyin Normal University Huai'an 223300 Jiangsu China
| | - Qionglin Yang
- Jiangsu Provincial Key Laboratory for Chemistry of Low-Dimensional Materials, School of Chemistry and Chemical Engineering, Huaiyin Normal University Huai'an 223300 Jiangsu China
| | - Chao Tang
- Jiangsu Provincial Key Laboratory for Chemistry of Low-Dimensional Materials, School of Chemistry and Chemical Engineering, Huaiyin Normal University Huai'an 223300 Jiangsu China
| | - Ping Chen
- Jiangsu Provincial Key Laboratory for Chemistry of Low-Dimensional Materials, School of Chemistry and Chemical Engineering, Huaiyin Normal University Huai'an 223300 Jiangsu China
| | - Mingzhu Lu
- Jiangsu Provincial Key Laboratory for Chemistry of Low-Dimensional Materials, School of Chemistry and Chemical Engineering, Huaiyin Normal University Huai'an 223300 Jiangsu China
| | - Zhengsong Hu
- Jiangsu Provincial Key Laboratory for Chemistry of Low-Dimensional Materials, School of Chemistry and Chemical Engineering, Huaiyin Normal University Huai'an 223300 Jiangsu China
| | - Huayou Hu
- Jiangsu Provincial Key Laboratory for Chemistry of Low-Dimensional Materials, School of Chemistry and Chemical Engineering, Huaiyin Normal University Huai'an 223300 Jiangsu China
| | - Tingting Zhang
- Jiangsu Provincial Key Laboratory for Chemistry of Low-Dimensional Materials, School of Chemistry and Chemical Engineering, Huaiyin Normal University Huai'an 223300 Jiangsu China
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10
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Feng M, Yan Q, Yang L, Ye Y, Liu G, Wang W. Selective synthesis of 2‐substituted 2,3‐dihydroquinazolin‐4(1
H
)‐ones and quinazolin‐4(3
H
)‐ones catalyzed by Schiff base dioxomolybdenum(VI) complex. INT J CHEM KINET 2022. [DOI: 10.1002/kin.21622] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Mengmeng Feng
- School of Chemistry and Material Science Ludong University Yantai China
| | - Qingmin Yan
- School of Chemistry and Material Science Ludong University Yantai China
| | - Lan Yang
- School of Chemistry and Material Science Ludong University Yantai China
| | - Yanan Ye
- School of Chemistry and Material Science Ludong University Yantai China
| | - Gang Liu
- School of Chemistry and Material Science Ludong University Yantai China
| | - Weili Wang
- School of Chemistry and Material Science Ludong University Yantai China
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11
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An Integrated Analysis of Mechanistic Insights into Biomolecular Interactions and Molecular Dynamics of Bio-Inspired Cu(II) and Zn(II) Complexes towards DNA/BSA/SARS-CoV-2 3CL pro by Molecular Docking-Based Virtual Screening and FRET Detection. Biomolecules 2022; 12:biom12121883. [PMID: 36551312 PMCID: PMC9775322 DOI: 10.3390/biom12121883] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2022] [Revised: 12/01/2022] [Accepted: 12/08/2022] [Indexed: 12/23/2022] Open
Abstract
Novel constructed bioactive mixed-ligand complexes (1b) [CuII(L)2(phen)] and (2b) [ZnII(L)2(phen)] {where, L = 2-(4-morpholinobenzylideneamino)phenol), phen = 1,10-phenanthroline} have been structurally analysed by various analytical and spectroscopic techniques, including, magnetic moments, thermogravimetric analysis, and X-ray crystallography. Various analytical and spectral measurements assigned showed that all complexes appear to have an octahedral geometry. Agar gel electrophoresis's output demonstrated that the Cu(II) complex (1b) had efficient deoxyribonucleic cleavage and complex (2b) demonstrated the partial cleavage accomplished with an oxidation agent, which generates spreadable OH● through the Fenton type mechanism. The DNA binding constants observed from viscosity, UV-Vis spectral, fluorometric, and electrochemical titrations were in the following sequence: (1b) > (2b) > (HL), which suggests that the complexes (1b-2b) might intercalate DNA, a possibility that is supported by the biothermodynamic measurements. In addition, the observed binding constant results of BSA by electronic absorption and fluorometric titrations indicate that complex (1b) revealed the best binding efficacy as compared to complex (2b) and free ligand. Interestingly, all compounds are found to interact with BSA through a static approach, as further attested by FRET detection. The DFT and molecular docking calculations were also performed to realize the electronic structure, reactivity, and binding capability of all test samples with CT-DNA, BSA, and the SARS-CoV-2 3CLPro, which revealed the binding energies were in a range of -8.1 to -8.9, -7.5 to -10.5 and -6.7--8.8 kcal/mol, respectively. The higher reactivity of the complexes than the free ligand is supported by the FMO theory. Among all the observed data for antioxidant properties against DPPH᛫, ᛫OH, O2-• and NO᛫ free radicals, complex (1a) had the best biological efficacy. The antimicrobial and cytotoxic characteristics of all test compounds have been studied by screening against certain selected microorganisms as well as against A549, HepG2, MCF-7, and NHDF cell lines, respectively. The observed findings revealed that the activity enhances coordination as compared to free ligand via Overtone's and Tweedy's chelation mechanisms. This is especially encouraging given that in every case, the experimental findings and theoretical detections were in perfect accord.
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12
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Comprehensive Assessment of Biomolecular Interactions of Morpholine-Based Mixed Ligand Cu(II) and Zn(II) Complexes of 2,2'-Bipyridine as Potential Anticancer and SARS-CoV-2 Agents: A Synergistic Experimental and Structure-Based Virtual Screening. Bioinorg Chem Appl 2022; 2022:6987806. [PMID: 36545430 PMCID: PMC9763021 DOI: 10.1155/2022/6987806] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2022] [Revised: 11/06/2022] [Accepted: 11/10/2022] [Indexed: 12/14/2022] Open
Abstract
A new class of pharmacologically active mixed-ligand complexes (1a-2a) [MII(L)2 (bpy)], where L = 2-(4-morpholinobenzylideneamino)phenol), bpy = 2,2'-bipyridine, MII = Cu (1a), and Zn (2a), were assigned an octahedral geometry by analytical and spectral measurements. Gel electrophoresis showed that complex (1a) demonstrated the complete DNA cleavage mediated by H2O2. The overall DNA-binding constants observed from UV-vis, fluorometric, hydrodynamic, and electrochemical titrations were in the following sequence: (1a) > (2a) > (HL), which suggests that the complexes might intercalate DNA, a possibility that is further supported by the biothermodynamic characteristics. The binding constant results of BSA by electronic absorption and fluorometric titration demonstrate that complex (1a) exhibits the highest binding effectiveness among others, which means that all compounds could interact with BSA through a static approach, additionally supported by FRET measurements. Density FunctionalTheory (DFT) and molecular docking calculations were relied on to unveil the electronic structure, reactivity, and interacting capability of all substances with DNA, BSA, and SARS-CoV-2 main protease (Mpro). These observed binding energies fell within the following ranges: -7.7 to -8.6, -7.2 to -10.2, and -6.7 to -8.2 kcal/mol, respectively. The higher reactivity of the complexes compared to free ligand is supported by the Frontier MolecularOrbital (FMO) theory. The in vitro antibacterial, cytotoxic, and radical scavenging characteristics revealed that complex (1a) has the best biological efficacy compared to others. This is encouraged because all experimental findings are closely correlated with the theoretical measurements.
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13
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Patra K, Bhattacherya A, Li C, Bera JK, Soo HS. Understanding the Visible-Light-Initiated Manganese-Catalyzed Synthesis of Quinolines and Naphthyridines under Ambient and Aerobic Conditions. ACS Catal 2022. [DOI: 10.1021/acscatal.2c05086] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Kamaless Patra
- School of Chemistry, Chemical Engineering and Biotechnology, Nanyang Technological University, Singapore, 21 Nanyang Link, Singapore 637371, Singapore
- Department of Chemistry and Centre for Environmental Science and Engineering, Indian Institute of Technology Kanpur, Kanpur 208016, India
| | - Arindom Bhattacherya
- Department of Chemistry and Centre for Environmental Science and Engineering, Indian Institute of Technology Kanpur, Kanpur 208016, India
| | - Chenfei Li
- School of Chemistry, Chemical Engineering and Biotechnology, Nanyang Technological University, Singapore, 21 Nanyang Link, Singapore 637371, Singapore
| | - Jitendra K. Bera
- Department of Chemistry and Centre for Environmental Science and Engineering, Indian Institute of Technology Kanpur, Kanpur 208016, India
| | - Han Sen Soo
- School of Chemistry, Chemical Engineering and Biotechnology, Nanyang Technological University, Singapore, 21 Nanyang Link, Singapore 637371, Singapore
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14
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Guo W, Guo C, Ma YN, Chen X. Practical Synthesis of B(9)-Halogenated Carboranes with N-Haloamides in Hexafluoroisopropanol. Inorg Chem 2022; 61:5326-5334. [PMID: 35311288 DOI: 10.1021/acs.inorgchem.2c00074] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The B(9)-H halogenation of o-carborane and m-carborane was achieved with excellent selectivities in hexafluoroisopropanol (HFIP) under simple reaction conditions: single reagent [trichloroisocyanuric acid (TCCA), tribromoisocyanuric acid (TBCA) or N-iodosuccinimide (NIS)], catalyst-free, air-/moisture-tolerant, and convenient work-up. With this method, a variety of 9-halogenated o-carboranes and m-carboranes were obtained in good to excellent yields with broad tolerance of functional groups.
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Affiliation(s)
- Wenjing Guo
- College of Chemistry, and Institute of Green Catalysis, Zhengzhou University, Zhengzhou, Henan 450001, China
| | - Chenyang Guo
- Shanghai-Hong Kong Joint Laboratory in Chemical Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, The Chinese Academy of Sciences, Shanghai 200032, China
| | - Yan-Na Ma
- College of Chemistry, and Institute of Green Catalysis, Zhengzhou University, Zhengzhou, Henan 450001, China
| | - Xuenian Chen
- College of Chemistry, and Institute of Green Catalysis, Zhengzhou University, Zhengzhou, Henan 450001, China
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15
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Gambacorta G, Baxendale IR. Continuous-Flow Hofmann Rearrangement Using Trichloroisocyanuric Acid for the Preparation of 2-Benzoxazolinone. Org Process Res Dev 2022. [DOI: 10.1021/acs.oprd.1c00440] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Guido Gambacorta
- Department of Chemistry, University of Durham, South Road, Durham DH1 3LE, U.K
| | - Ian R. Baxendale
- Department of Chemistry, University of Durham, South Road, Durham DH1 3LE, U.K
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16
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Govada GV, Sabbasani RR. A new outlook in oxidative transformations and coupling reactions via in situ generation of organic chloramines. Appl Organomet Chem 2022. [DOI: 10.1002/aoc.6518] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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17
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Li M, Liu S, Bao H, Li Q, Deng YH, Sun TY, Wang L. Photoinduced Metal-Free Borylation of Aryl Halides Catalysed by in situ Formed Donor-Acceptor Complex. Chem Sci 2022; 13:4909-4914. [PMID: 35655877 PMCID: PMC9067585 DOI: 10.1039/d2sc00552b] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2022] [Accepted: 04/03/2022] [Indexed: 11/21/2022] Open
Abstract
Organoboron compounds are very important building blocks which can be applied in medicinal, biological and industrial fields. However, direct borylation in a metal free manner has been very rarely reported. Herein, we described the successful direct borylation of haloarenes under mild, operationally simple, catalyst-free conditions, promoted by irradiation with visible light. Mechanistic experiments and computational investigations indicate the formation of an excited donor–acceptor complex with a −3.12 V reduction potential, which is a highly active reductant and can facilitate single-electron-transfer (SET) with aryl halides to produce aryl radical intermediates. A two-step one-pot method was developed for site selective aromatic C–H bond borylation. The protocol's good functional group tolerance enables the functionalization of a variety of biologically relevant compounds, representing a new application of aryl radicals merged with photochemistry. We reported a facile metal-free conversion of aryl halides to the corresponding boronic esters catalysed by an in situ formed donor–acceptor complex. A two-step one-pot method was also developed for site selective aromatic C–H bond borylation.![]()
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Affiliation(s)
- Manhong Li
- School of Pharmaceutical Sciences (Shenzhen), Sun Yat-Sen University No. 66, Gongchang Road Shenzhen 518107 P. R. China
| | - Siqi Liu
- Shenzhen Bay Laboratory Shenzhen 518132 P. R. China
| | - Haoshi Bao
- School of Pharmaceutical Sciences (Shenzhen), Sun Yat-Sen University No. 66, Gongchang Road Shenzhen 518107 P. R. China
| | - Qini Li
- School of Pharmaceutical Sciences (Shenzhen), Sun Yat-Sen University No. 66, Gongchang Road Shenzhen 518107 P. R. China
| | - Yi-Hui Deng
- Shenzhen Bay Laboratory Shenzhen 518132 P. R. China
- Lab of Computational Chemistry and Drug Design, State Key Laboratory of Chemical Oncogenomics, Peking University Shenzhen Graduate School Shenzhen 518055 P. R. China
| | - Tian-Yu Sun
- Shenzhen Bay Laboratory Shenzhen 518132 P. R. China
| | - Leifeng Wang
- School of Pharmaceutical Sciences (Shenzhen), Sun Yat-Sen University No. 66, Gongchang Road Shenzhen 518107 P. R. China
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18
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Guo X, Li P, Wang Q, Wang Q, Wang L. Remote Selective Decarboxylative Difluoroarylmethylation of 8-Aminoquinolines under Transition Metal-Free Conditions. Org Chem Front 2022. [DOI: 10.1039/d1qo01912k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A facile transition metal-free decarboxylative C4 selective C-H difluoroarylmethylation of 8-aminoquinolines has been developed. This strategy proceeds under simple aqueous conditions and displays a broad substrate scope and excellent functional...
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19
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Basavanna V, Chandramouli M, Kempaiah C, Bhadraiah UK, Chandra, Lingegowda NS, Doddamani S, Ningaiah S. A New Series of 1,3,4-Oxadiazole Linked Quinolinyl-Pyrazole/Isoxazole Derivatives: Synthesis and Biological Activity Evaluation. RUSS J GEN CHEM+ 2021; 91:2257-2266. [PMID: 34934304 PMCID: PMC8680057 DOI: 10.1134/s1070363221110128] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2020] [Revised: 10/21/2021] [Accepted: 11/08/2021] [Indexed: 11/23/2022]
Abstract
A series of 1,3,4-oxadiazole bridged pyrazole/isoxazole bearing quinoline derivatives has been designed and synthesized by a clean and convenient method. Structures of the newly synthesized compounds have been confirmed by FTIR, 1H and 13C NMR, and HRMS spectral data. The titled compounds have been evaluated for their molecular docking guided antimicrobial and anti-inflammatory activity. One of 1,3,4-oxadiazole bridged quinolinyl-pyrazole derivatives has interacted efficiently with E. Coli protein (PDB file: 1KZN), and has been characterized by good antimicrobial activity against the majority of the tested pathogens. Another product has exhibited excellent anti-inflammatory activity.
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Affiliation(s)
- V. Basavanna
- Department of Chemistry, Vidyavardhaka College of Engineering, Visvesvaraya Technological University, Mysore, 570002 Karnataka, India
| | - M. Chandramouli
- Department of Chemistry, Vidyavardhaka College of Engineering, Visvesvaraya Technological University, Mysore, 570002 Karnataka, India
| | - C. Kempaiah
- Department of Engineering Physics, HKBK College of Engineering, Bengaluru, 560045 Karnataka, India
| | - U. K. Bhadraiah
- Department of Chemistry, Yuvaraja’s College, University of Mysore, Mysore, 570005 Karnataka, India
| | - Chandra
- Department of Physics, The National Institute of Engineering (NIE), Mysore, 570008 Karnataka, India
| | - N. S. Lingegowda
- Department of Chemistry, Vidyavardhaka College of Engineering, Visvesvaraya Technological University, Mysore, 570002 Karnataka, India
| | - Shridevi Doddamani
- Chemical Sciences and Technology Division, CSIR-NIIST, Thiruvananthapuram, 695019 Kerala, India
| | - S. Ningaiah
- Department of Chemistry, Vidyavardhaka College of Engineering, Visvesvaraya Technological University, Mysore, 570002 Karnataka, India
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20
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Mal S, Jana M, Sarkar S. Recent Update on Transition Metal‐Free C(sp
2
)−H Bond Halogenation in (Hetero) Arenes. ChemistrySelect 2021. [DOI: 10.1002/slct.202102956] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Sourav Mal
- Department of Chemistry University of Kalyani Kalyani 741235 West Bengal India
| | - Manoranjan Jana
- Department of Chemistry University of Kalyani Kalyani 741235 West Bengal India
| | - Satinath Sarkar
- Department of Chemistry University of Kalyani Kalyani 741235 West Bengal India
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21
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Bastos GA, de Mattos MC. A convenient Hofmann reaction of carboxamides and cyclic imides mediated by trihaloisocyanuric acids. Tetrahedron Lett 2021. [DOI: 10.1016/j.tetlet.2021.153422] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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22
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Hu W, Zhang F, Chen C, Qi T, Shen Y, Qian G, Rong Z. Metal-free C8-H functionalization of quinoline N-oxides with ynamides. Chem Commun (Camb) 2021; 57:6995-6998. [PMID: 34159972 DOI: 10.1039/d1cc02138a] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The metal-free C8-H functionalization of quinoline N-oxides with ynamides is unveiled for the first time by the intramolecular Friedel-Crafts-type reaction of quinolyl enolonium intermediates generated from Brønsted acid-catalyzed addition of quinoline N-oxides to ynamides. Various quinoline N-oxides and terminal ynamides prove to be suitable substrates for this method. A one-pot protocol was then developed for the metal-free direct C8-H functionalization of quinolines.
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Affiliation(s)
- Weican Hu
- College of Biological and Environmental Sciences, Zhejiang Wanli University, Ningbo 315100, People's Republic of China.
| | - Feiyang Zhang
- College of Biological and Environmental Sciences, Zhejiang Wanli University, Ningbo 315100, People's Republic of China.
| | - Chen Chen
- College of Biological and Environmental Sciences, Zhejiang Wanli University, Ningbo 315100, People's Republic of China.
| | - Tianhang Qi
- College of Biological and Environmental Sciences, Zhejiang Wanli University, Ningbo 315100, People's Republic of China.
| | - Yanlong Shen
- College of Biological and Environmental Sciences, Zhejiang Wanli University, Ningbo 315100, People's Republic of China.
| | - Guoying Qian
- College of Biological and Environmental Sciences, Zhejiang Wanli University, Ningbo 315100, People's Republic of China.
| | - Zhouting Rong
- College of Biological and Environmental Sciences, Zhejiang Wanli University, Ningbo 315100, People's Republic of China.
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23
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He X, Jiang Y, Zhou H, Zhu Q. Direct Phase‐Transition Catalysed Monohalogenation of 8‐Amidoquinolines at C5 Position in Water. ChemistrySelect 2021. [DOI: 10.1002/slct.202100616] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Xin He
- School of Chemical and Pharmaceutical Engineering Changzhou Institute of Engineering Technology No. 33, Middle Gehu Road Changzhou 213164 P. R. China
| | - Yujia Jiang
- School of Chemical and Pharmaceutical Engineering Changzhou Institute of Engineering Technology No. 33, Middle Gehu Road Changzhou 213164 P. R. China
| | - Haiping Zhou
- School of Chemical and Pharmaceutical Engineering Changzhou Institute of Engineering Technology No. 33, Middle Gehu Road Changzhou 213164 P. R. China
| | - Qihua Zhu
- Jiangsu Key Laboratory of Drug Design and Optimization Department of Medicinal Chemistry China Pharmaceutical University 639 Longmian Avenue Nanjing 211198 China
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24
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Abstract
C-X (X = halogen) bonds are indispensable functional groups in organic synthesis
by mediating a massive number of important organic reactions. While a variety of different
catalytic strategies are available for generating C-X bonds, those methods enabling the C-X
bond formation under transition metal-free conditions via the C-H bond functionalization are
particularly interesting because of the inherent atom economy and environmental friendliness
associated with such methods. Herein, the advancements in the transition metal-free halogenation
of C(2)-H bond are reviewed.
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Affiliation(s)
- Tian Luo
- College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, China
| | - Shanghui Tian
- College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, China
| | - Jie-Ping Wan
- College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, China
| | - Yunyun Liu
- College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, China
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25
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Lin X, Zeng C, Liu C, Fang Z, Guo K. C-5 selective chlorination of 8-aminoquinoline amides using dichloromethane. Org Biomol Chem 2021; 19:1352-1357. [PMID: 33475130 DOI: 10.1039/d0ob02055a] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
An oxidant-free electrochemical regioselective chlorination of 8-aminoquinoline amides at ambient temperature in batch and continuous-flow was achieved. Inert DCM was used as the chlorinating reagent. Owing to the continuous-flow setup, the reaction scale up can be achieved conveniently with higher productivity. Moreover, this method has good position-control, and water and air tolerance. Costly quaternary ammonium salts were avoided. Radical-trapping, H/D exchange, KIE and cyclic voltammetry experiments were conducted to gain insight into the reaction mechanism.
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Affiliation(s)
- Xinxin Lin
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, 30 Puzhu Rd S., Nanjing 211816, China.
| | - Cuilian Zeng
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, 30 Puzhu Rd S., Nanjing 211816, China.
| | - Chengkou Liu
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, 30 Puzhu Rd S., Nanjing 211816, China.
| | - Zheng Fang
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, 30 Puzhu Rd S., Nanjing 211816, China.
| | - Kai Guo
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, 30 Puzhu Rd S., Nanjing 211816, China. and State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, 30 Puzhu Rd S., Nanjing 211816, China
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26
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Wang K, Hou J, Lv Y, Wei T, Bai R, Xie Y. Electrolyte‐Triggered C5‐Selective Trifluoromethylation and Halogenation of 8‐Aminoquinoline Derivatives. ASIAN J ORG CHEM 2021. [DOI: 10.1002/ajoc.202000650] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Kai Wang
- Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals Zhejiang University of Technology 310014 Hangzhou P. R. China
| | - Jiahao Hou
- College of Pharmaceutical Science Zhejiang University of Technology 310014 Hangzhou P. R. China
| | - Yangjing Lv
- College of Pharmaceutical Science Zhejiang University of Technology 310014 Hangzhou P. R. China
| | - Tingting Wei
- College of Pharmaceutical Science Zhejiang University of Technology 310014 Hangzhou P. R. China
| | - Renren Bai
- College of Pharmaceutical Science Zhejiang University of Technology 310014 Hangzhou P. R. China
| | - Yuanyuan Xie
- Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals Zhejiang University of Technology 310014 Hangzhou P. R. China
- College of Pharmaceutical Science Zhejiang University of Technology 310014 Hangzhou P. R. China
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27
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Jilloju PC, Shyam P, Sanjeev A, Vedula RR. Four-component, one–pot synthesis of (E)-N-benzylidene-3-(benzylthio)-5-(3,5-dimethyl-1H-pyrazol-1-yl)-4H-1,2,4-triazol-4-amines and their DNA binding and molecular docking studies. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2020.129140] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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28
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Grace Victoria G, Rajasekhara Reddy S. Recent advances in the synthesis of organic chloramines and their insights into health care. NEW J CHEM 2021. [DOI: 10.1039/d1nj01086g] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Organic nitrogen–chlorine compounds and their derivatives are important heterocyclic motifs, exhibiting applications such as N-chlorinating agents, analytical reagents, disinfectants, antipathogens, and as synthetic intermediates for drugs, polymers, and natural products.
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Affiliation(s)
- G. Grace Victoria
- Department of Chemistry
- Vellore Institute of Technology (VIT)
- Vellore 632014
- India
- Department of Chemistry
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29
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Motati DR, Amaradhi R, Ganesh T. Recent developments in the synthesis of azaindoles from pyridine and pyrrole building blocks. Org Chem Front 2021. [DOI: 10.1039/d0qo01079k] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
The azaindole framework is ubiquitous in bioactive natural products and pharmaceuticals. This review highlights the synthetic approaches to azaindoles with advantages and limitations, mechanistic pathways and biological importance.
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Affiliation(s)
- Damoder Reddy Motati
- Department of Pharmacology and Chemical Biology
- Emory School of Medicine
- Atlanta
- USA
| | - Radhika Amaradhi
- Department of Pharmacology and Chemical Biology
- Emory School of Medicine
- Atlanta
- USA
| | - Thota Ganesh
- Department of Pharmacology and Chemical Biology
- Emory School of Medicine
- Atlanta
- USA
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30
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Doraghi F, Kianmehr E, Foroumadi A. Metal-free regioselective C5-cyanoalkylation of the 8-aminoquinolineamides/sulfonamides via oxidative cross-dehydrogenative coupling with alkylnitriles. Org Chem Front 2021. [DOI: 10.1039/d1qo00570g] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
A practical, versatile and Metal-free regioselective C5-cyanoalkylation of the 8-aminoquinolineamides/sulfonamides with acetonitrile has been described.
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Affiliation(s)
- Fatemeh Doraghi
- School of Chemistry, College of Science, University of Tehran, Tehran 1417614411, Iran
| | - Ebrahim Kianmehr
- School of Chemistry, College of Science, University of Tehran, Tehran 1417614411, Iran
| | - Alireza Foroumadi
- Department of Medicinal Chemistry, Faculty of Pharmacy and Pharmaceutical Sciences Research Center, Tehran University of Medical Sciences, Tehran, Iran
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31
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Kwak SW, Hong JH, Lee SH, Kim M, Chung Y, Lee KM, Kim Y, Park MH. Synthesis and Photophysical Properties of a Series of Dimeric Indium Quinolinates. Molecules 2020; 26:molecules26010034. [PMID: 33374726 PMCID: PMC7793487 DOI: 10.3390/molecules26010034] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2020] [Revised: 12/16/2020] [Accepted: 12/19/2020] [Indexed: 11/16/2022] Open
Abstract
A novel class of quinolinol-based dimeric indium complexes (1-6) was synthesized and characterized using 1H and 13C(1H) NMR spectroscopy and elemental analysis. Compounds 1-6 exhibited typical low-energy absorption bands assignable to quinolinol-centered π-π* charge transfer (CT) transition. The emission spectra of 1-6 exhibited slight bathochromic shifts with increasing solvent polarity (p-xylene < tetrahydrofuran (THF) < dichloromethane (DCM)). The emission bands also showed a gradual redshift, with an increase in the electron-donating effect of substituents at the C5 position of the quinoline groups. The absolute emission quantum yields (ΦPL) of compounds 1 (11.2% in THF and 17.2% in film) and 4 (17.8% in THF and 36.2% in film) with methyl substituents at the C5 position of the quinoline moieties were higher than those of the indium complexes with other substituents.
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Affiliation(s)
- Sang Woo Kwak
- Department of Chemistry, Chungbuk National University, Cheongju 28644, Korea; (S.W.K.); (S.H.L.); (M.K.); (Y.C.)
| | - Ju Hyun Hong
- Department of Chemistry, Institute for Molecular Science and Fusion Technology, Kangwon National University, Chuncheon 24341, Korea;
| | - Sang Hoon Lee
- Department of Chemistry, Chungbuk National University, Cheongju 28644, Korea; (S.W.K.); (S.H.L.); (M.K.); (Y.C.)
| | - Min Kim
- Department of Chemistry, Chungbuk National University, Cheongju 28644, Korea; (S.W.K.); (S.H.L.); (M.K.); (Y.C.)
| | - Yongseog Chung
- Department of Chemistry, Chungbuk National University, Cheongju 28644, Korea; (S.W.K.); (S.H.L.); (M.K.); (Y.C.)
| | - Kang Mun Lee
- Department of Chemistry, Institute for Molecular Science and Fusion Technology, Kangwon National University, Chuncheon 24341, Korea;
- Correspondence: (K.M.L.); (Y.K.); (M.H.P.); Tel.: +82-33-250-8499 (K.M.L.); +82-43-261-3395 (Y.K.); +82-43-261-2736 (M.H.P.)
| | - Youngjo Kim
- Department of Chemistry, Chungbuk National University, Cheongju 28644, Korea; (S.W.K.); (S.H.L.); (M.K.); (Y.C.)
- Correspondence: (K.M.L.); (Y.K.); (M.H.P.); Tel.: +82-33-250-8499 (K.M.L.); +82-43-261-3395 (Y.K.); +82-43-261-2736 (M.H.P.)
| | - Myung Hwan Park
- Department of Chemistry Education, Chungbuk National University, Cheongju 28644, Korea
- Correspondence: (K.M.L.); (Y.K.); (M.H.P.); Tel.: +82-33-250-8499 (K.M.L.); +82-43-261-3395 (Y.K.); +82-43-261-2736 (M.H.P.)
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32
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Shi WY, Ding YN, Liu C, Zheng N, Gou XY, Li M, Zhang Z, Liu HC, Niu ZJ, Liang YM. Three-component ruthenium-catalyzed remote C-H functionalization of 8-aminoquinoline amides. Chem Commun (Camb) 2020; 56:12729-12732. [PMID: 32966378 DOI: 10.1039/d0cc05491g] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Multicomponent reactions can efficiently construct complex molecular structures from simple precursors. Herein, a novel ruthenium-catalyzed three-component highly selective remote C-H functionalization of 8-aminoquinoline amides has been described. The reaction tolerates a wide range of functional groups, producing arylation/difluoroalkylation products of olefins with potential biological activity and pharmaceutical value. Radical scavenging and radical clock experiments show that a free radical process is involved and a H/D exchange experiment suggests that the reaction might involve ortho-C-H activation of the aromatic ring. A possible mechanism is proposed.
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Affiliation(s)
- Wei-Yu Shi
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, P. R. China.
| | - Ya-Nan Ding
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, P. R. China.
| | - Ce Liu
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, P. R. China.
| | - Nian Zheng
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, P. R. China.
| | - Xue-Ya Gou
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, P. R. China.
| | - Ming Li
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, P. R. China.
| | - Zhe Zhang
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, P. R. China.
| | - Hong-Chao Liu
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, P. R. China.
| | - Zhi-Jie Niu
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, P. R. China.
| | - Yong-Min Liang
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, P. R. China.
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33
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Hou J, Wang K, Zhang C, Wei T, Bai R, Xie Y. Metal‐Free Electrochemical Oxidative Dihalogenation of Quinolines on the C5 and C7 Positions Using
N
‐Halosuccinimides. European J Org Chem 2020. [DOI: 10.1002/ejoc.202001066] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Jiahao Hou
- College of Pharmaceutical Sciences Zhejiang University of Technology Hangzhou P.R. China
| | - Kai Wang
- Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals Zhejiang University of Technology Hangzhou P.R. China
| | - Changjun Zhang
- Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals Zhejiang University of Technology Hangzhou P.R. China
| | - Tingting Wei
- College of Pharmaceutical Sciences Zhejiang University of Technology Hangzhou P.R. China
| | - Renren Bai
- College of Pharmaceutical Sciences Zhejiang University of Technology Hangzhou P.R. China
| | - Yuanyuan Xie
- College of Pharmaceutical Sciences Zhejiang University of Technology Hangzhou P.R. China
- Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals Zhejiang University of Technology Hangzhou P.R. China
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Bian HL, Tang SZ, Chen ME, Zhang XM, Lv JW, Chen XW, Qi FM, Chen SW, Zhang FM. Transition-Metal-Free Site-Selective γ-C(sp 2)-H Monoiodination of Arenes Directed by an Aliphatic Keto Group. Org Lett 2020; 22:5314-5319. [PMID: 32589432 DOI: 10.1021/acs.orglett.0c01466] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
A general γ-C(sp2)-H iodination method directed by an aliphatic keto group has been developed under transition-metal-free conditions for the first time, generating iodoarenes in good to excellent yields with excellent site selectivity. This protocol features a wide range of aryl-substituted ketones, short reaction times, mild reaction conditions, and scalable synthetic procedures. A possible reaction mechanism was also proposed based on several control experiments.
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Affiliation(s)
- Hong-Li Bian
- State Key Laboratory of Applied Organic Chemistry & College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China.,School of Pharmacy, Lanzhou University, Lanzhou 730000, China
| | - Shi-Zhong Tang
- State Key Laboratory of Applied Organic Chemistry & College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China
| | - Meng-En Chen
- State Key Laboratory of Applied Organic Chemistry & College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China
| | - Xiao-Ming Zhang
- State Key Laboratory of Applied Organic Chemistry & College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China
| | - Jian-Wei Lv
- State Key Laboratory of Applied Organic Chemistry & College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China
| | - Xiao-Wei Chen
- State Key Laboratory of Applied Organic Chemistry & College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China
| | - Feng-Ming Qi
- State Key Laboratory of Applied Organic Chemistry & College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China
| | - Shi-Wu Chen
- School of Pharmacy, Lanzhou University, Lanzhou 730000, China
| | - Fu-Min Zhang
- State Key Laboratory of Applied Organic Chemistry & College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China
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35
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Remote C–H Functionalization of 8-Aminoquinoline Ring. Top Curr Chem (Cham) 2020; 378:42. [DOI: 10.1007/s41061-020-00303-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2020] [Accepted: 03/31/2020] [Indexed: 12/13/2022]
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36
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Canela-Xandri A, Balcells M, Villorbina G, Christou P, Canela-Garayoa R. Preparation and Uses of Chlorinated Glycerol Derivatives. Molecules 2020; 25:E2511. [PMID: 32481583 PMCID: PMC7321119 DOI: 10.3390/molecules25112511] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2020] [Revised: 05/19/2020] [Accepted: 05/25/2020] [Indexed: 11/16/2022] Open
Abstract
Crude glycerol (C3H8O3) is a major by-product of biodiesel production from vegetable oils and animal fats. The increased biodiesel production in the last two decades has forced glycerol production up and prices down. However, crude glycerol from biodiesel production is not of adequate purity for industrial uses, including food, cosmetics and pharmaceuticals. The purification process of crude glycerol to reach the quality standards required by industry is expensive and dificult. Novel uses for crude glycerol can reduce the price of biodiesel and make it an economical alternative to diesel. Moreover, novel uses may improve environmental impact, since crude glycerol disposal is expensive and dificult. Glycerol is a versatile molecule with many potential applications in fermentation processes and synthetic chemistry. It serves as a glucose substitute in microbial growth media and as a precursor in the synthesis of a number of commercial intermediates or fine chemicals. Chlorinated derivatives of glycerol are an important class of such chemicals. The main focus of this review is the conversion of glycerol to chlorinated derivatives, such as epichlorohydrin and chlorohydrins, and their further use in the synthesis of additional downstream products. Downstream products include non-cyclic compounds with allyl, nitrile, azide and other functional groups, as well as oxazolidinones and triazoles, which are cyclic compounds derived from ephichlorohydrin and chlorohydrins. The polymers and ionic liquids, which use glycerol as an initial building block, are highlighted, as well.
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Affiliation(s)
- Anna Canela-Xandri
- Department of Chemistry, University of Lleida-Agrotecnio Centre and DBA center, Av. Alcalde Rovira Roure, 191, 25198 Lleida, Spain; (A.C.-X.); (M.B.); (G.V.)
| | - Mercè Balcells
- Department of Chemistry, University of Lleida-Agrotecnio Centre and DBA center, Av. Alcalde Rovira Roure, 191, 25198 Lleida, Spain; (A.C.-X.); (M.B.); (G.V.)
| | - Gemma Villorbina
- Department of Chemistry, University of Lleida-Agrotecnio Centre and DBA center, Av. Alcalde Rovira Roure, 191, 25198 Lleida, Spain; (A.C.-X.); (M.B.); (G.V.)
| | - Paul Christou
- Department of Crop and Forest Sciences, University of Lleida-Agrotecnio Center, Av. Rovira Roure 191, 25198 Lleida, Spain;
- ICREA, Catalan Institute for Research and Advanced Studies, Passeig Lluıís Companys 23, 08010 Barcelona, Spain
| | - Ramon Canela-Garayoa
- Department of Chemistry, University of Lleida-Agrotecnio Centre and DBA center, Av. Alcalde Rovira Roure, 191, 25198 Lleida, Spain; (A.C.-X.); (M.B.); (G.V.)
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37
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Kaur N, Ahlawat N, Verma Y, Bhardwaj P, Grewal P, Jangid NK. Rhodium catalysis in the synthesis of fused five-membered N-heterocycles. INORG NANO-MET CHEM 2020. [DOI: 10.1080/24701556.2020.1745838] [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]
Affiliation(s)
- Navjeet Kaur
- Department of Chemistry, Banasthali Vidyapith, Banasthali, Rajasthan, India
| | - Neha Ahlawat
- Department of Chemistry, Banasthali Vidyapith, Banasthali, Rajasthan, India
| | - Yamini Verma
- Department of Chemistry, Banasthali Vidyapith, Banasthali, Rajasthan, India
| | - Pranshu Bhardwaj
- Department of Chemistry, Banasthali Vidyapith, Banasthali, Rajasthan, India
| | - Pooja Grewal
- Department of Chemistry, Banasthali Vidyapith, Banasthali, Rajasthan, India
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38
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Affiliation(s)
- Quan Zheng
- College of Pharmaceutical Science and Institute of Drug Development & Chemical BiologyZhejiang University of Technology Hangzhou 310014 People's Republic of China
| | - Chen‐Fu Liu
- College of Pharmaceutical ScienceGannan Medical University Ganzhou 341000 People's Republic of China
| | - Jie Chen
- College of Pharmaceutical Science and Institute of Drug Development & Chemical BiologyZhejiang University of Technology Hangzhou 310014 People's Republic of China
| | - Guo‐Wu Rao
- College of Pharmaceutical Science and Institute of Drug Development & Chemical BiologyZhejiang University of Technology Hangzhou 310014 People's Republic of China
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39
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Pan Q, Wang J, Wang Q, Li H, Wu Y. Synthesis of 2‐Trifluoromethyl Quinolines from α,β‐Unsaturated Trifluoromethyl Ketones: Regiochemistry Reversal Comparing to the Standard Skraup‐Doebner‐Von Miller Synthesis. ChemistrySelect 2020. [DOI: 10.1002/slct.202000895] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Qian‐Wen Pan
- School of Marine Science and Technology Harbin Institute of Technology No. 2, Wenhuaxi Road Weihai 264209 P. R. China
| | - Jun‐Hu Wang
- School of Marine Science and Technology Harbin Institute of Technology No. 2, Wenhuaxi Road Weihai 264209 P. R. China
| | - Qi Wang
- School of Marine Science and Technology Harbin Institute of Technology No. 2, Wenhuaxi Road Weihai 264209 P. R. China
| | - Hui‐Jing Li
- School of Marine Science and Technology Harbin Institute of Technology No. 2, Wenhuaxi Road Weihai 264209 P. R. China
| | - Yan‐Chao Wu
- School of Marine Science and Technology Harbin Institute of Technology No. 2, Wenhuaxi Road Weihai 264209 P. R. China
- Weihai ChuanghuiEnvironmental Protection Technology Co., Ltd No. 3–2, Shichangdadao Road Weihai 264200 P. R. China
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40
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Kumar P. A review on quinoline derivatives as anti-methicillin resistant Staphylococcus aureus (MRSA) agents. BMC Chem 2020; 14:17. [PMID: 32190843 PMCID: PMC7071757 DOI: 10.1186/s13065-020-00669-3] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2019] [Accepted: 02/28/2020] [Indexed: 01/31/2023] Open
Abstract
Methicillin Resistant Staphylococcus aureus (MRSA) consists of strains of S. aureus which are resistant to methicillin. The resistance is due to the acquisition of mecA gene which encodes PBP2a unlike of any PBPs normally produced by S. aureus. PBP2a shows unusually low β-Lactam affinity and remains active to allow cell wall synthesis at normally lethal β-Lactam concentrations. MRSA can cause different types of infections like Healthcare associated MRSA, Community associated MRSA and Livestock associated MRSA infections. It causes skin lesions, osteomyelitis, endocarditis and furunculosis. To treat MRSA infections, only a few options are available like vancomycin, clindamycin, co-trimoxazole, fluoroquinolones or minocycline and there is a dire need of discovering new antibacterial agents that can effectively treat MRSA infections. In the current review, an attempt has been made to compile the data of quinoline derivatives possessing anti-MRSA potential reported to date.![]()
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Affiliation(s)
- Pradeep Kumar
- Department of Pharmaceutical Sciences and Natural Products, Central University of Punjab, Bathinda, 151001 India
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41
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Motati DR, Uredi D, Burra AG, Bowen JP, Fronczek FR, Smith CR, Watkins EB. Differential formation of nitrogen-centered radicals leading to unprecedented, regioselective bromination of N,N′-(1,2-phenylene)bisamides and 2-amidophenols. Org Chem Front 2020. [DOI: 10.1039/c9qo01508f] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
A highly efficient, site-selective, visible light-accelerated, remote C–H halogenation of unsymmetrical aromatic bisamides/amidoesters has been developed.
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Affiliation(s)
- Damoder Reddy Motati
- Center for Pharmacometrics and Molecular Discovery
- Department of Pharmaceutical Sciences
- College of Pharmacy
- Union University
- Jackson
| | - Dilipkumar Uredi
- Center for Pharmacometrics and Molecular Discovery
- Department of Pharmaceutical Sciences
- College of Pharmacy
- Union University
- Jackson
| | - Amarender Goud Burra
- Center for Pharmacometrics and Molecular Discovery
- Department of Pharmaceutical Sciences
- College of Pharmacy
- Union University
- Jackson
| | - J. Phillip Bowen
- Department of Pharmaceutical Sciences
- College of Pharmacy
- Mercer University
- Atlanta
- USA
| | | | - Clint R. Smith
- Center for Pharmacometrics and Molecular Discovery
- Department of Pharmaceutical Sciences
- College of Pharmacy
- Union University
- Jackson
| | - E. Blake Watkins
- Center for Pharmacometrics and Molecular Discovery
- Department of Pharmaceutical Sciences
- College of Pharmacy
- Union University
- Jackson
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42
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Yang X, Yang QL, Wang XY, Xu HH, Mei TS, Huang Y, Fang P. Copper-Catalyzed Electrochemical Selective Bromination of 8-Aminoquinoline Amide Using NH4Br as the Brominating Reagent. J Org Chem 2019; 85:3497-3507. [DOI: 10.1021/acs.joc.9b03223] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Xiang Yang
- Key Laboratory of Oil & Gas Fine Chemicals, Ministry of Education & Xinjiang Uyghur Autonomous Region, College of Chemistry and Chemical Engineering, Xinjiang University, Urumqi, Xinjiang 830046, China
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai 200032, China
| | - Qi-Liang Yang
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai 200032, China
| | - Xiang-Yang Wang
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai 200032, China
| | - Hao-Han Xu
- Key Laboratory of Oil & Gas Fine Chemicals, Ministry of Education & Xinjiang Uyghur Autonomous Region, College of Chemistry and Chemical Engineering, Xinjiang University, Urumqi, Xinjiang 830046, China
| | - Tian-Sheng Mei
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai 200032, China
| | - Yan Huang
- Key Laboratory of Oil & Gas Fine Chemicals, Ministry of Education & Xinjiang Uyghur Autonomous Region, College of Chemistry and Chemical Engineering, Xinjiang University, Urumqi, Xinjiang 830046, China
| | - Ping Fang
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai 200032, China
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43
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Kaur N, Ahlawat N, Bhardwaj P, Verma Y, Grewal P, Jangid NK. Ag-mediated synthesis of six-membered N-heterocycles. SYNTHETIC COMMUN 2019. [DOI: 10.1080/00397911.2019.1703196] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Navjeet Kaur
- Department of Chemistry, Banasthali Vidyapith, Banasthali, Rajasthan, India
| | - Neha Ahlawat
- Department of Chemistry, Banasthali Vidyapith, Banasthali, Rajasthan, India
| | - Pranshu Bhardwaj
- Department of Chemistry, Banasthali Vidyapith, Banasthali, Rajasthan, India
| | - Yamini Verma
- Department of Chemistry, Banasthali Vidyapith, Banasthali, Rajasthan, India
| | - Pooja Grewal
- Department of Chemistry, Banasthali Vidyapith, Banasthali, Rajasthan, India
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44
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Li D, Jia Z, Jiang Y, Jia J, Zhao X, Li Z, Xu Z. One‐Pot Functionalization of 8‐Aminoquinolines through the Acylation and Regioselective C5‐H Halogenation under Transition‐Metal‐Free Conditions. ChemistrySelect 2019. [DOI: 10.1002/slct.201904286] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Dandan Li
- School of Chemistry and Chemical EngineeringXuchang University No.88, Bayi Road, Xuchang Henan 461000 P. R. China
| | - Zhenzhen Jia
- School of Chemistry and Chemical EngineeringXuchang University No.88, Bayi Road, Xuchang Henan 461000 P. R. China
| | - Yongshuai Jiang
- School of Chemistry and Chemical EngineeringXuchang University No.88, Bayi Road, Xuchang Henan 461000 P. R. China
| | - Jingpeng Jia
- School of Chemistry and Chemical EngineeringXuchang University No.88, Bayi Road, Xuchang Henan 461000 P. R. China
| | - Xiaowei Zhao
- School of Chemistry and Chemical EngineeringXuchang University No.88, Bayi Road, Xuchang Henan 461000 P. R. China
| | - Zehui Li
- School of Chemistry and Chemical EngineeringXuchang University No.88, Bayi Road, Xuchang Henan 461000 P. R. China
| | - Zhihong Xu
- School of Chemistry and Chemical EngineeringXuchang University No.88, Bayi Road, Xuchang Henan 461000 P. R. China
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45
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Almandil NB, Taha M, Gollapalli M, Rahim F, Ibrahim M, Mosaddik A, Anouar EH. Indole bearing thiadiazole analogs: synthesis, β-glucuronidase inhibition and molecular docking study. BMC Chem 2019; 13:14. [PMID: 31384763 PMCID: PMC6661955 DOI: 10.1186/s13065-019-0522-x] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2018] [Accepted: 01/16/2019] [Indexed: 12/05/2022] Open
Abstract
Indole based thiadiazole derivatives (1-22) have synthesized, characterized by NMR and HREI-MS and evaluated for β-Glucuronidase inhibition. All compounds showed outstanding β-glucuronidase activity with IC50 values ranging between 0.5 ± 0.08 to 38.9 ± 0.8 µM when compared with standard d-saccharic acid 1,4 lactone (IC50 value of 48.1 ± 1.2 µM). The compound 6, a 2,3-dihydroxy analog was found the most potent among the series with IC50 value 0.5 ± 0.08 µM. Structure activity relationship has been established for all compounds. To confirm the binding interactions of these newly synthesized compounds, molecular docking study have been carried out which reveal that these compounds established stronger hydrogen bonding networks with active site residues.
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Affiliation(s)
- Noor Barak Almandil
- Department of Clinical Pharmacy, Institute for Research and Medical Consultations (IRMC), Imam Abdulrahman Bin Faisal University, P. O. Box 1982, Dammam, 31441 Saudi Arabia
| | - Muhammad Taha
- Department of Clinical Pharmacy, Institute for Research and Medical Consultations (IRMC), Imam Abdulrahman Bin Faisal University, P. O. Box 1982, Dammam, 31441 Saudi Arabia
| | - Mohammed Gollapalli
- Department of Computer Information Systems, College of Computer Science & Information Technology, Imam Abdulrahman Bin Faisal University, P. O. Box 1982, Dammam, 31441 Saudi Arabia
| | - Fazal Rahim
- Department of Chemistry, Hazara University, Mansehra, 21300 Khyber Pakhtunkhwa Pakistan
| | - Mohamed Ibrahim
- Department of Clinical Pharmacy, Institute for Research and Medical Consultations (IRMC), Imam Abdulrahman Bin Faisal University, P. O. Box 1982, Dammam, 31441 Saudi Arabia
| | - Ashik Mosaddik
- Department of Clinical Pharmacy, Institute for Research and Medical Consultations (IRMC), Imam Abdulrahman Bin Faisal University, P. O. Box 1982, Dammam, 31441 Saudi Arabia
| | - El Hassane Anouar
- Department of Chemistry, College of Sciences and Humanities, Prince Sattam Bin Abdulaziz University, P.O. Box 83, Al-Kharj, 11942 Saudi Arabia
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46
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Wang CM, Du JY, Zhang JY, Tang KX, Gao TH, Xu YG, Sun LP. Regioselective bromination of aryl ureas with Phenyliodine(III) diacetate and potassium bromide. Tetrahedron 2019. [DOI: 10.1016/j.tet.2019.130621] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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47
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Applications of metal and non-metal catalysts for the synthesis of oxygen containing five-membered polyheterocylces: a mini review. SN APPLIED SCIENCES 2019. [DOI: 10.1007/s42452-019-1007-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022] Open
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48
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Kaur N, Grewal P, Bhardwaj P, Devi M, Ahlawat N, Verma Y. Synthesis of five-membered N-heterocycles using silver metal. SYNTHETIC COMMUN 2019. [DOI: 10.1080/00397911.2019.1655767] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Navjeet Kaur
- Department of Chemistry, Banasthali Vidyapith, Banasthali, India
| | - Pooja Grewal
- Department of Chemistry, Banasthali Vidyapith, Banasthali, India
| | - Pranshu Bhardwaj
- Department of Chemistry, Banasthali Vidyapith, Banasthali, India
| | - Meenu Devi
- Department of Chemistry, Banasthali Vidyapith, Banasthali, India
| | - Neha Ahlawat
- Department of Chemistry, Banasthali Vidyapith, Banasthali, India
| | - Yamini Verma
- Department of Chemistry, Banasthali Vidyapith, Banasthali, India
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49
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Kumar S, Pradhan S, Roy S, De PB, Punniyamurthy T. Iron-Catalyzed Regioselective Remote C(sp 2)-H Carboxylation of Naphthyl and Quinoline Amides. J Org Chem 2019; 84:10481-10489. [PMID: 31347363 DOI: 10.1021/acs.joc.9b01184] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Iron(III)-catalyzed regioselective direct remote C-H carboxylation of naphthyl and quinoline amides was developed using CBr4 and alcohol. The reaction involves a radical pathway using a coordination activation strategy and single electron transfer process. The use of sustainable iron catalysis, selectivity, and the substrate scope are the important practical features.
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Affiliation(s)
- Sandeep Kumar
- Department of Chemistry , Indian Institute of Technology Guwahati , Guwahati 781039 , India
| | - Sourav Pradhan
- Department of Chemistry , Indian Institute of Technology Guwahati , Guwahati 781039 , India
| | - Subhasish Roy
- Department of Chemistry , Indian Institute of Technology Guwahati , Guwahati 781039 , India
| | - Pinaki Bhusan De
- Department of Chemistry , Indian Institute of Technology Guwahati , Guwahati 781039 , India
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50
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Chen MY, Pannecoucke X, Jubault P, Besset T. Access to Isothiazolones from Simple Acrylamides by Pd-Catalyzed C–H Bond Activation. J Org Chem 2019; 84:13194-13202. [DOI: 10.1021/acs.joc.9b01872] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Mu-Yi Chen
- Normandie Univ, INSA Rouen, UNIROUEN, CNRS, COBRA (UMR 6014), 76000 Rouen, France
| | - Xavier Pannecoucke
- Normandie Univ, INSA Rouen, UNIROUEN, CNRS, COBRA (UMR 6014), 76000 Rouen, France
| | - Philippe Jubault
- Normandie Univ, INSA Rouen, UNIROUEN, CNRS, COBRA (UMR 6014), 76000 Rouen, France
| | - Tatiana Besset
- Normandie Univ, INSA Rouen, UNIROUEN, CNRS, COBRA (UMR 6014), 76000 Rouen, France
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