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Krajewska J, Nowicki K, Durka K, Marek-Urban PH, Wińska P, Stępniewski T, Woźniak K, Laudy AE, Luliński S. Oxazoline scaffold in synthesis of benzosiloxaboroles and related ring-expanded heterocycles: diverse reactivity, structural peculiarities and antimicrobial activity. RSC Adv 2022; 12:23099-23117. [PMID: 36090419 PMCID: PMC9379557 DOI: 10.1039/d2ra03910a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2022] [Accepted: 08/07/2022] [Indexed: 11/21/2022] Open
Abstract
Two isomeric benzosiloxaborole derivatives 3a and 5a bearing fluorine and 4,4-dimethyl-2-oxazolin-2-yl substituents attached to the aromatic rings were obtained. Both compounds were prone to hydrolytic cleavage of the oxazoline ring after initial protonation or methylation of the nitrogen atom. The derivative 3c featuring N-methylammoniumalkyl ester functionality was successfully subjected to N-sulfonylation and N-acylation reactions to give respective derivatives which demonstrates its potential for modular synthesis of structurally extended benzosiloxaboroles. Compound 5c bearing N-ammoniumalkyl ester underwent conversion to a unique macrocyclic dimer due to siloxaborole ring opening. Furthermore, an unexpected 4-electron reduction of the oxazoline ring occurred during an attempted synthesis of 5a. The reaction gave rise to an unprecedented 7-membered heterocyclic system 4a comprising a relatively stable B-O-B-O-Si linkage and stabilized by an intramolecular N-B coordination. It could be cleaved to derivative 4c bearing BOH and SiMe2OH groups which acts as a pseudo-diol as demonstrated by formation of an adduct with Tavaborole. Apart from the multinuclear NMR spectroscopy characterization, crystal structures of the obtained products were determined in many cases by X-ray diffraction. Investigation of biological activity of the obtained compounds revealed that derivatives 3e and 3f with pendant N-methyl arylsulfonamide groups exhibit high activity against Gram-positive cocci such as methicillin-sensitive Staphylococcus aureus ATCC 6538P, methicillin-resistant S. aureus (MRSA) ATCC 43300 as well as the MRSA clinical strains, with MIC values in the range of 3.12-6.25 mg L-1. These two compounds also showed activity against Enterococcus faecalis ATCC 29212 and Enterococcus faecium ATCC 6057 (with MICs of 25-50 mg L-1). The results of the antimicrobial activity and cytotoxicity studies indicate that 3e and 3f can be considered as potential antibacterial agents, especially against S. aureus MRSA.
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Affiliation(s)
- Joanna Krajewska
- Department of Pharmaceutical Microbiology, Medical University of Warsaw Banacha 1 b 02-097 Warsaw Poland
| | - Krzysztof Nowicki
- Warsaw University of Technology, Faculty of Chemistry Noakowskiego 3 00-664 Warsaw Poland
| | - Krzysztof Durka
- Warsaw University of Technology, Faculty of Chemistry Noakowskiego 3 00-664 Warsaw Poland
| | - Paulina H Marek-Urban
- Warsaw University of Technology, Faculty of Chemistry Noakowskiego 3 00-664 Warsaw Poland
| | - Patrycja Wińska
- Warsaw University of Technology, Faculty of Chemistry Noakowskiego 3 00-664 Warsaw Poland
| | - Tomasz Stępniewski
- GPCR Drug Discovery Lab, Research Programme on Biomedical Informatics (GRIB), Hospital del Mar Medical Research Institute (IMIM) - Department of Experimental and Health Sciences of Pompeu Fabra University (UPF) Carrer del Dr Aiguader, 88 08003 Barcelona Spain
| | - Krzysztof Woźniak
- University of Warsaw, Faculty of Chemistry Pasteura 1 02-093 Warsaw Poland
| | - Agnieszka E Laudy
- Department of Pharmaceutical Microbiology, Medical University of Warsaw Banacha 1 b 02-097 Warsaw Poland
| | - Sergiusz Luliński
- Warsaw University of Technology, Faculty of Chemistry Noakowskiego 3 00-664 Warsaw Poland
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2
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Molecular structure, covalent and non-covalent interactions of an oxaborole derivative (L-PRO2F3PBA): FTIR, X-ray diffraction and QTAIM approach. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2021.130911] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Nowicki K, Pacholak P, Luliński S. Heteroelement Analogues of Benzoxaborole and Related Ring Expanded Systems. Molecules 2021; 26:5464. [PMID: 34576937 PMCID: PMC8468133 DOI: 10.3390/molecules26185464] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2021] [Revised: 09/03/2021] [Accepted: 09/06/2021] [Indexed: 11/16/2022] Open
Abstract
The review covers the chemistry of organoboron heterocycles structurally related to benzoxaboroles where one of the carbon atoms in a boracycle or a fused benzene ring is replaced by a heteroelement such as boron, silicon, tin, nitrogen, phosphorus, or iodine. Related ring expanded systems including those based on naphthalene and biphenyl cores are also described. The information on synthetic methodology as well as the basic structural and physicochemical characteristics of these emerging heterocycles is complemented by a presentation of their potential applications in organic synthesis and medicinal chemistry, the latter aspect being mostly focused on the promising antimicrobial activity of selected compounds.
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Affiliation(s)
- Krzysztof Nowicki
- Faculty of Chemistry, Warsaw University of Technology, Noakowskiego 3, PL-00-664 Warsaw, Poland; (K.N.); (P.P.)
| | - Piotr Pacholak
- Faculty of Chemistry, Warsaw University of Technology, Noakowskiego 3, PL-00-664 Warsaw, Poland; (K.N.); (P.P.)
- Faculty of Chemistry, University of Warsaw, Pasteura 1, PL-02-093 Warsaw, Poland
| | - Sergiusz Luliński
- Faculty of Chemistry, Warsaw University of Technology, Noakowskiego 3, PL-00-664 Warsaw, Poland; (K.N.); (P.P.)
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Pacholak P, Krajewska J, Wińska P, Dunikowska J, Gogowska U, Mierzejewska J, Durka K, Woźniak K, Laudy AE, Luliński S. Development of structurally extended benzosiloxaboroles - synthesis and in vitro biological evaluation. RSC Adv 2021; 11:25104-25121. [PMID: 35478884 PMCID: PMC9037100 DOI: 10.1039/d1ra04127d] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2021] [Accepted: 07/09/2021] [Indexed: 12/26/2022] Open
Abstract
The synthesis of potassium 6-hydroxy-7-chloro-1,1-dimethyl-3,3-difluorobenzo-1,2,3-siloxaborolate 5b from readily available 4-bromo-2-chlorophenol was developed. This compound proved useful in various derivatizations resulting in a wide range of O-functionalized benzosiloxaboroles. Reactions of 5b with selected substituted benzoyl chlorides gave rise to a series of respective derivatives with 6-benzoate side groups attached to the benzosiloxaborole core. Furthermore, treatment of 5b with substituted benzenesufonyl chlorides afforded several benzosiloxaboroles bearing functionalized benzenesulfonate moieties at the 6 position. The synthesis of related chloropyridine-2-yloxy substituted benzosiloxaboroles was accomplished by a standard approach involving silylation/boronation of appropriate heterodiaryl ethers. Investigation of biological activity of obtained compounds revealed that some benzoate and most benzenesulfonate derivatives exhibit high activity against Gram-positive cocci such as methicillin-sensitive Staphylococcus aureus ATCC 6538P as well as methicillin-resistant S. aureus ATCC 43300 with the MIC values in the range of 0.39–3.12 mg L−1. Some benzenesulfonate derivatives showed also potent activity against Enterococcus faecalis ATCC 29212 and E. faecium ATCC 6057 with MIC = 6.25 mg L−1. Importantly, for the most promising cocci-active benzenesulfonate derivatives the obtained MIC values were far below the cytotoxicity limit determined with respect to human normal lung fibroblasts (MRC-5). For those derivatives, the obtained IC50 values were higher than 12.3 mg L−1. The results of antimicrobial activity and cytotoxicity indicate that the tested compounds can be considered as potential antibacterial agents. The synthesis of potassium 6-hydroxy-7-chloro-1,1-dimethyl-3,3-difluorobenzo-1,2,3-siloxaborolate 5b from readily available 4-bromo-2-chlorophenol was developed.![]()
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Affiliation(s)
- P Pacholak
- Faculty of Chemistry, Warsaw University of Technology Noakowskiego 3 00-664 Warsaw Poland .,University of Warsaw, Faculty of Chemistry Pasteura 1 02-093 Warsaw Poland
| | - J Krajewska
- Department of Pharmaceutical Microbiology, Medical University of Warsaw Oczki 3 02-007 Warsaw Poland
| | - P Wińska
- Faculty of Chemistry, Warsaw University of Technology Noakowskiego 3 00-664 Warsaw Poland
| | - J Dunikowska
- Faculty of Chemistry, Warsaw University of Technology Noakowskiego 3 00-664 Warsaw Poland
| | - U Gogowska
- Faculty of Chemistry, Warsaw University of Technology Noakowskiego 3 00-664 Warsaw Poland
| | - J Mierzejewska
- Faculty of Chemistry, Warsaw University of Technology Noakowskiego 3 00-664 Warsaw Poland
| | - K Durka
- Faculty of Chemistry, Warsaw University of Technology Noakowskiego 3 00-664 Warsaw Poland
| | - K Woźniak
- University of Warsaw, Faculty of Chemistry Pasteura 1 02-093 Warsaw Poland
| | - A E Laudy
- Department of Pharmaceutical Microbiology, Medical University of Warsaw Oczki 3 02-007 Warsaw Poland
| | - S Luliński
- Faculty of Chemistry, Warsaw University of Technology Noakowskiego 3 00-664 Warsaw Poland
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Ćwik P, Ciosek-Skibińska P, Zabadaj M, Luliński S, Durka K, Wróblewski W. Differential Sensing of Saccharides Based on an Array of Fluorinated Benzosiloxaborole Receptors. SENSORS 2020; 20:s20123540. [PMID: 32580489 PMCID: PMC7349318 DOI: 10.3390/s20123540] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/21/2020] [Revised: 06/14/2020] [Accepted: 06/18/2020] [Indexed: 11/24/2022]
Abstract
Fluorinated benzosiloxaboroles–silicon congeners of benzoxaboroles, were synthesized and tested as molecular receptors for mono- and disaccharides. The receptors differed in the Lewis acidity of the boron center as well as in the number of potential binding sites. The calculated stability constants indicated different binding affinity of benzosiloxaborole derivatives towards selected saccharides, enabling their classification using a receptor array-based sensing. Unique fluorescence fingerprints were created on the basis of competitive interactions of the studied receptors with both Alizarin Red S (ARS) and tested saccharide molecules. Detailed chemometric analysis of the obtained fluorescence data (based on partial least squares-discriminant analysis and hierarchical clustering analysis) provided the differential sensing of common saccharides, in particular the differentiation between glucose and fructose. In addition, DFT calculations were carried out to shed light on the binding mechanism under different pH conditions.
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Affiliation(s)
- Paweł Ćwik
- Chair of Medical Biotechnology, Faculty of Chemistry, Warsaw University of Technology, Noakowskiego 3, 00-664 Warsaw, Poland; (P.Ć.); (M.Z.); (W.W.)
| | - Patrycja Ciosek-Skibińska
- Chair of Medical Biotechnology, Faculty of Chemistry, Warsaw University of Technology, Noakowskiego 3, 00-664 Warsaw, Poland; (P.Ć.); (M.Z.); (W.W.)
- Correspondence: ; Tel.: +48-22-234-7873
| | - Marcin Zabadaj
- Chair of Medical Biotechnology, Faculty of Chemistry, Warsaw University of Technology, Noakowskiego 3, 00-664 Warsaw, Poland; (P.Ć.); (M.Z.); (W.W.)
| | - Sergiusz Luliński
- Chair of Physical Chemistry, Faculty of Chemistry, Warsaw University of Technology, Noakowskiego 3, 00-664 Warsaw, Poland; (S.L.); (K.D.)
| | - Krzysztof Durka
- Chair of Physical Chemistry, Faculty of Chemistry, Warsaw University of Technology, Noakowskiego 3, 00-664 Warsaw, Poland; (S.L.); (K.D.)
| | - Wojciech Wróblewski
- Chair of Medical Biotechnology, Faculty of Chemistry, Warsaw University of Technology, Noakowskiego 3, 00-664 Warsaw, Poland; (P.Ć.); (M.Z.); (W.W.)
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Raman, DRIFT and ATR-IR spectra, corrosion inhibition, DFT and solid-state calculations of 4-amino-3-choloro-2,5,6-trifluoropyridine. J Mol Struct 2020. [DOI: 10.1016/j.molstruc.2020.127837] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Soliman UA. Computational Studies, NMR and Ir Spectral Analysis, Normal Coordinate Analysis, and Thermodynamic Properties of 2-Fluoro-4-Pyridineboronic Acid. J STRUCT CHEM+ 2020. [DOI: 10.1134/s0022476620030075] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Durka K, Urban M, Czub M, Dąbrowski M, Tomaszewski P, Luliński S. An intramolecular ortho-assisted activation of the silicon–hydrogen bond in arylsilanes: an experimental and theoretical study. Dalton Trans 2018; 47:3705-3716. [DOI: 10.1039/c7dt04858k] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An intramolecular activation of the Si–H bond in arylsilanes by selected ortho-assisting functional groups based on boron, carbon and phosphorus was investigated experimentally and by means of theoretical calculations.
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Affiliation(s)
- Krzysztof Durka
- Department of Physical Chemistry
- Faculty of Chemistry
- Warsaw University of Technology
- 00-664 Warszawa
- Poland
| | - Mateusz Urban
- Department of Physical Chemistry
- Faculty of Chemistry
- Warsaw University of Technology
- 00-664 Warszawa
- Poland
| | - Maja Czub
- Department of Physical Chemistry
- Faculty of Chemistry
- Warsaw University of Technology
- 00-664 Warszawa
- Poland
| | - Marek Dąbrowski
- Department of Physical Chemistry
- Faculty of Chemistry
- Warsaw University of Technology
- 00-664 Warszawa
- Poland
| | - Patryk Tomaszewski
- Department of Physical Chemistry
- Faculty of Chemistry
- Warsaw University of Technology
- 00-664 Warszawa
- Poland
| | - Sergiusz Luliński
- Department of Physical Chemistry
- Faculty of Chemistry
- Warsaw University of Technology
- 00-664 Warszawa
- Poland
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Czub M, Durka K, Luliński S, Łosiewicz J, Serwatowski J, Urban M, Woźniak K. Synthesis and Transformations of Functionalized Benzosiloxaboroles. European J Org Chem 2017. [DOI: 10.1002/ejoc.201601328] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Maja Czub
- Warsaw University of Technology; Faculty of Chemistry; Department of Physical Chemistry 00-664 Warsaw Poland
| | - Krzysztof Durka
- Warsaw University of Technology; Faculty of Chemistry; Department of Physical Chemistry 00-664 Warsaw Poland
| | - Sergiusz Luliński
- Warsaw University of Technology; Faculty of Chemistry; Department of Physical Chemistry 00-664 Warsaw Poland
| | - Justyna Łosiewicz
- Warsaw University of Technology; Faculty of Chemistry; Department of Physical Chemistry 00-664 Warsaw Poland
| | - Janusz Serwatowski
- Warsaw University of Technology; Faculty of Chemistry; Department of Physical Chemistry 00-664 Warsaw Poland
| | - Mateusz Urban
- Warsaw University of Technology; Faculty of Chemistry; Department of Physical Chemistry 00-664 Warsaw Poland
| | - Krzysztof Woźniak
- Chemistry Department; Biological and Chemical Research Centre; University of Warsaw 02-089 Warszawa Poland
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Campillo-Alvarado G, Staudt CA, Bak MJ, MacGillivray LR. Generation of cocrystals of Tavaborole (AN2690): opportunities for boron-containing APIs. CrystEngComm 2017. [DOI: 10.1039/c7ce00314e] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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12
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Zhu C, Guo ZH, Mu AU, Liu Y, Wheeler SE, Fang L. Low Band Gap Coplanar Conjugated Molecules Featuring Dynamic Intramolecular Lewis Acid-Base Coordination. J Org Chem 2016; 81:4347-52. [PMID: 27096728 DOI: 10.1021/acs.joc.6b00238] [Citation(s) in RCA: 60] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Ladder-type conjugated molecules with a low band gap and low LUMO level were synthesized through an N-directed borylation reaction of pyrazine-derived donor-acceptor-donor precursors. The intramolecular boron-nitrogen coordination bonds played a key role in rendering the rigid and coplanar conformation of these molecules and their corresponding electronic structures. Experimental investigation and theoretical simulation revealed the dynamic nature of such coordination, which allowed for active manipulation of the optical properties of these molecules by using competing Lewis basic solvents.
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Affiliation(s)
- Congzhi Zhu
- Department of Chemistry, Texas A&M University , 3255 TAMU, College Station, Texas 77843, United States
| | - Zi-Hao Guo
- Department of Chemistry, Texas A&M University , 3255 TAMU, College Station, Texas 77843, United States
| | - Anthony U Mu
- Department of Chemistry, Texas A&M University , 3255 TAMU, College Station, Texas 77843, United States
| | - Yi Liu
- The Molecular Foundry, Lawrence Berkeley National Laboratory , One Cyclotron Road, Berkeley, California 94720, United States
| | - Steven E Wheeler
- Department of Chemistry, Texas A&M University , 3255 TAMU, College Station, Texas 77843, United States
| | - Lei Fang
- Department of Chemistry, Texas A&M University , 3255 TAMU, College Station, Texas 77843, United States
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