1
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Gao K, Zha SE, Liu CY, Wang QJ, Wang EQ. The crystal structure of 1-(4-bromophenyl)-3-cycloheptylurea, C 14H 19BrN 2O. Z KRIST-NEW CRYST ST 2022. [DOI: 10.1515/ncrs-2022-0486] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Abstract
C14H19BrN2O, monoclinic, P21/c (no. 14), a = 12.9782(8) Å, b = 9.1447(6) Å, c = 11.8842(8) Å, β = 98.214(6)°, V = 1395.97(16) Å3, Z = 4, R
gt
(F) = 0.0637, wR
ref
(F
2) = 0.1876, T = 293 K.
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Affiliation(s)
- Kai Gao
- Luoyang Academy of Agriculture and Forestry Sciences , Luoyang , 471023 , China
| | - Su-E. Zha
- Luoyang Academy of Agriculture and Forestry Sciences , Luoyang , 471023 , China
| | - Chang-Ying Liu
- Luoyang Academy of Agriculture and Forestry Sciences , Luoyang , 471023 , China
| | - Qiao-Juan Wang
- Luoyang Academy of Agriculture and Forestry Sciences , Luoyang , 471023 , China
| | - Er-Qiang Wang
- Luoyang Academy of Agriculture and Forestry Sciences , Luoyang , 471023 , China
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2
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Bhattacharjee B, Das A, Das G, Ramesh A. Urea-Based Ligand as an Efflux Pump Inhibitor: Warhead to Counter Ciprofloxacin Resistance and Inhibit Collagen Adhesion by MRSA. ACS APPLIED BIO MATERIALS 2022; 5:1710-1720. [PMID: 35344332 DOI: 10.1021/acsabm.2c00092] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Methicillin-resistant Staphylococcus aureus (MRSA) is a frontline human pathogen in which efflux pump activity confers high levels of antibiotic-resistance and poses a therapeutic challenge in the clinics. The present study illustrates the potential of urea-based ligand as an efflux pump inhibitor (EPI) in order to restore the efficacy of ciprofloxacin (CPX) against MRSA. Among eight structurally varying urea-based ligands, the ligand C8 could significantly inhibit efflux pump activity in the clinical MRSA strain S. aureus 4s and was superior to the known EPI reserpine. In combinatorial treatment, C8 enhanced cellular accumulation of CPX, rendered a 16× decrease in the MIC of CPX, and restored the susceptibility of S. aureus 4s to CPX. Notably, C8 downregulated the expression of norA gene coding for the efflux pump in MRSA and treatment with 10 μM C8 and 2.0 μM CPX prevented emergence of the CPX resistance trait and suppressed MRSA cell growth till 120 generations. For potential anti-MRSA therapy, C8-loaded poly(d,l-lactide-co-glycolide) nanocarrier (C8-PNC) was generated, which facilitated facile release of C8 in physiologically relevant fluid. C8-PNC (loaded with 50 μM C8) rendered efflux pump inhibition and eliminated MRSA in combination with only 2.0 μM CPX. Treatment with the non-toxic C8-PNC (loaded with 50 μM C8) and CPX (2.0 μM) also hindered MRSA adhesion on collagen manifold higher as compared to cells treated with 32 μM CPX and significantly downregulated norA gene expression in non-adhered MRSA cells. The urea-based ligand presented herein is a promising biocompatible therapeutic material for effective mitigation of MRSA infections.
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Affiliation(s)
- Basu Bhattacharjee
- Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, Guwahati 781039, India
| | - Asesh Das
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati 781039, India
| | - Gopal Das
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati 781039, India
| | - Aiyagari Ramesh
- Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, Guwahati 781039, India
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3
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Montis R, Aragoni MC, Arca M, Coles SJ, Lippolis V, Milia J, Orton JB, Pala L, Picci G, Pivetta T, Caltagirone C. Coordination Chemistry and Sensing Properties Towards Anions and Metal Ions of a Simple Fluorescent Urea. Eur J Inorg Chem 2021. [DOI: 10.1002/ejic.202100580] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Riccardo Montis
- Università degli Studi di Urbino Carlo Bo Dipartimento di Scienze Pure e Applicate Laboratorio di Chimica Supramolecolare Via della Stazione 4 61029 Urbino Italy
| | - M. Carla Aragoni
- Università degli Studi di Cagliari Dipartimento di Scienze Chimiche e Geologiche Bivio per Sestu S. S. 554 09042 Monserrato CA Italy
| | - Massimiliano Arca
- Università degli Studi di Cagliari Dipartimento di Scienze Chimiche e Geologiche Bivio per Sestu S. S. 554 09042 Monserrato CA Italy
| | - Simon J. Coles
- Chemistry University of Southampton Highfield Southampton SO17 1BJ UK
| | - Vito Lippolis
- Università degli Studi di Cagliari Dipartimento di Scienze Chimiche e Geologiche Bivio per Sestu S. S. 554 09042 Monserrato CA Italy
| | - Jessica Milia
- Università degli Studi di Cagliari Dipartimento di Scienze Chimiche e Geologiche Bivio per Sestu S. S. 554 09042 Monserrato CA Italy
| | - James B. Orton
- Chemistry University of Southampton Highfield Southampton SO17 1BJ UK
| | - Laura Pala
- Università degli Studi di Cagliari Dipartimento di Scienze Chimiche e Geologiche Bivio per Sestu S. S. 554 09042 Monserrato CA Italy
| | - Giacomo Picci
- Università degli Studi di Cagliari Dipartimento di Scienze Chimiche e Geologiche Bivio per Sestu S. S. 554 09042 Monserrato CA Italy
| | - Tiziana Pivetta
- Università degli Studi di Cagliari Dipartimento di Scienze Chimiche e Geologiche Bivio per Sestu S. S. 554 09042 Monserrato CA Italy
| | - Claudia Caltagirone
- Università degli Studi di Cagliari Dipartimento di Scienze Chimiche e Geologiche Bivio per Sestu S. S. 554 09042 Monserrato CA Italy
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4
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Manna U, Das G. Positional isomeric effect of acyclic hosts on supramolecular recognition of anionic guests. Coord Chem Rev 2021. [DOI: 10.1016/j.ccr.2021.213931] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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5
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Picci G, Bazzicalupi C, Coles SJ, Gratteri P, Isaia F, Lippolis V, Montis R, Murgia S, Nocentini A, Orton JB, Caltagirone C. Halogenated isophthalamides and dipicolineamides: the role of the halogen substituents in the anion binding properties. Dalton Trans 2020; 49:9231-9238. [PMID: 32500883 DOI: 10.1039/d0dt01492c] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
A novel family of amide-based receptors is herein described. Specifically, the role of the halogen substituents at the aryl moieties in the anion binding properties of a series of halogenated isophthalamides and dipicolineamides (L1-L6) was investigated both in solution and in the solid state in order to evaluate the incidence of all possible different and combined weak host-guest interactions. Only L5 and L6 bearing pentafluorophenyl rings as substituents have some affinities for the set of anions studied. In particular, in the case of L5 an interesting behaviour with the formation of a non-symmetric adduct with benzoate and dihydrogen phosphate was hypothesised by 1H- and 19F-NMR spectroscopy studies in solution and confirmed by theoretical calculation. The study of the crystal structures of the receptors demonstrated that the steric hindrance determined by the halogen substituents in the receptor molecules influences the accessibility of the anions to the isophthalamide or dipicoline amide NH moieties, thus modulating the affinity for the anion guests.
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Affiliation(s)
- Giacomo Picci
- Dipartimento di Scienze Chimiche e Geologiche, Università degli Studi di Cagliari, S.S. 554 Bivio per Sestu, 09042 Monserrato (CA), Italy.
| | - Carla Bazzicalupi
- Dipartimento di Chimica 'Ugo Schiff', Via della Lastruccia, 3-13 50019 Sesto Fiorentino (FI), Italy
| | - Simon J Coles
- Chemistry University of Southampton, Highfield, Southampton SO17 1BJ, UK
| | - Paola Gratteri
- Department of NEUROFARBA, Section of Pharmaceutical and Nutraceutical Sciences, Laboratory of Molecular Modeling Cheminformatics & QSAR, University of Florence, Polo Scientifico, Via U. Schiff 6, 50019 Sesto Fiorentino, Firenze, Italy
| | - Francesco Isaia
- Dipartimento di Scienze Chimiche e Geologiche, Università degli Studi di Cagliari, S.S. 554 Bivio per Sestu, 09042 Monserrato (CA), Italy.
| | - Vito Lippolis
- Dipartimento di Scienze Chimiche e Geologiche, Università degli Studi di Cagliari, S.S. 554 Bivio per Sestu, 09042 Monserrato (CA), Italy.
| | - Riccardo Montis
- Dipartimento di Scienze Chimiche e Geologiche, Università degli Studi di Cagliari, S.S. 554 Bivio per Sestu, 09042 Monserrato (CA), Italy.
| | - Sergio Murgia
- Dipartimento di Scienze Chimiche e Geologiche, Università degli Studi di Cagliari, S.S. 554 Bivio per Sestu, 09042 Monserrato (CA), Italy.
| | - Alessio Nocentini
- Department of NEUROFARBA, Section of Pharmaceutical and Nutraceutical Sciences, Laboratory of Molecular Modeling Cheminformatics & QSAR, University of Florence, Polo Scientifico, Via U. Schiff 6, 50019 Sesto Fiorentino, Firenze, Italy
| | - James B Orton
- Chemistry University of Southampton, Highfield, Southampton SO17 1BJ, UK
| | - Claudia Caltagirone
- Dipartimento di Scienze Chimiche e Geologiche, Università degli Studi di Cagliari, S.S. 554 Bivio per Sestu, 09042 Monserrato (CA), Italy.
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6
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Okpareke OC, Henderson W, Lane JR, Okafor SN. Synthesis, structure, computational and molecular docking studies of asymmetrically di-substituted ureas containing carboxyl and phosphoryl hydrogen bond acceptor functional groups. J Mol Struct 2020. [DOI: 10.1016/j.molstruc.2019.127360] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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7
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Setter CJ, Whittaker JJ, Brock AJ, Athukorala Arachchige KS, McMurtrie JC, Clegg JK, Pfrunder MC. Straightening out halogen bonds. CrystEngComm 2020. [DOI: 10.1039/d0ce00176g] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
A new parameter is proposed to quantify the linearity of halogen bonds.
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Affiliation(s)
- Caitlin J. Setter
- School of Chemistry and Molecular Biosciences
- The University of Queensland
- St Lucia QLD 4072
- Australia
| | - Jacob J. Whittaker
- School of Chemistry and Molecular Biosciences
- The University of Queensland
- St Lucia QLD 4072
- Australia
| | - Aidan J. Brock
- School of Chemistry and Physics
- Queensland University of Technology
- Brisbane QLD 4000
- Australia
| | | | - John C. McMurtrie
- School of Chemistry and Physics
- Queensland University of Technology
- Brisbane QLD 4000
- Australia
| | - Jack K. Clegg
- School of Chemistry and Molecular Biosciences
- The University of Queensland
- St Lucia QLD 4072
- Australia
| | - Michael C. Pfrunder
- School of Chemistry and Molecular Biosciences
- The University of Queensland
- St Lucia QLD 4072
- Australia
- School of Chemistry and Physics
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8
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Ghosh TK, Mondal S, Bej S, Nandi M, Ghosh P. An integrated urea and halogen bond donor based receptor for superior and selective sensing of phosphates. Dalton Trans 2019; 48:4538-4546. [PMID: 30860521 DOI: 10.1039/c8dt05066j] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
A new RuII based bis-heteroleptic ditopic receptor, 1[PF6]2 (C44H33F12IN10OP2Ru), having integrated anion binding iodotriazole (halogen bond donor) and urea units (-NH bond donor) is employed for selective sensing of phosphates (e.g., H2PO4- and HP2O73-). 1[PF6]2 showed superiority in phosphate sensing in CH3CN as compared to its hydrogen bond donor analogue, 2[PF6]2 (C44H34F12N10OP2Ru), non-urea halogen bond analogue, 3[PF6]2 (C38H27F12IN8P2Ru) and non-urea hydrogen bond donor analogue, 4[PF6]2 (C38H28F12N8P2Ru) in terms of enhanced binding constant values, longer excited state lifetimes and lower detection limit values. 1H-NMR, Isothermal Titration Calorimetry (ITC) and photophysical studies revealed the implementation of the combined role of both the halogen bond donor iodotriazole unit and the -NH unit of the urea moiety for selective and enhanced binding of phosphates.
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Affiliation(s)
- Tamal Kanti Ghosh
- School of Chemical Science, Indian Association for the Cultivation of Science, 2A & 2B Raja S. C. Mullick Road, Kolkata 700032, India.
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