1
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Wang P, Kinjo R. Borane-Mediated Polyhedral Expansion to Access Metal-Free Neutral and Cationic Derivatives of closo-Heptaboranes. J Am Chem Soc 2024. [PMID: 39358830 DOI: 10.1021/jacs.4c12003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/04/2024]
Abstract
Boranes with closed polyhedral structures feature peculiar bonding and structural characteristics, rendering them widely applicable in diverse research areas ranging from basic functionalization reactions to applications such as medicine, nanomaterials, molecular electronics, and neutron capture therapy. Among the closed borane family, the neutral and cationic heptaborane B7 clusters have been missing in contemporary boron cluster chemistry to date. Herein, we report a polyhedral expansion protocol to construct a neutral derivative of closo-heptaborane (B7) from closo-hexaborane (B6) mediated by borane. Conversion of the neutral derivative of closo-heptaborane to a cationic derivative is also demonstrated. X-ray crystallographic and spectroscopic analyses with the aid of quantum chemical calculations reveal that both neutral and cationic derivatives of closo-heptaborane exhibit a pentagonal-bipyramidal geometry and involve the delocalized σ skeletal electrons, leading to three-dimensional aromaticity. Moreover, the B7 core of the former undergoes a complexation reaction with silver tetrafluoroborate, representing the first experimental demonstration of the nucleophilic nature of the closo-heptaborane.
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Affiliation(s)
- Penglong Wang
- School of Chemistry, Chemical Engineering and Biotechnology, Nanyang Technological University, Singapore 637371, Singapore
| | - Rei Kinjo
- School of Chemistry, Chemical Engineering and Biotechnology, Nanyang Technological University, Singapore 637371, Singapore
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2
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Cao W, Hu Z, Sun H, Wang XB. Photoelectron Spectroscopy and Computational Study on Microsolvated [B 10H 10] 2- Clusters and Comparisons to Their [B 12H 12] 2- Analogues. J Phys Chem A 2024; 128:6981-6988. [PMID: 39112434 DOI: 10.1021/acs.jpca.4c04772] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/23/2024]
Abstract
Microhydrated closo-boranes have attracted great interest due to their superchaotropic activity related to the well-known Hofmeister effect and important applications in biomedical and battery fields. In this work, we report a combined negative ion photoelectron spectroscopy and quantum chemical investigation on hydrated closo-decaborate clusters [B10H10]2-·nH2O (n = 1-7) with a direct comparison to their analogues [B12H12]2-·nH2O and free water clusters. A single H2O molecule is found to be sufficient to stabilize the intrinsically unstable [B10H10]2- dianion. The first two water molecules strongly interact with the solute forming B-H···H-O dihydrogen bonds while additional water molecules show substantially reduced binding energies. Unlike [B12H12]2-·nH2O possessing a highly structured water network with the attached H2O molecules arranged in a unified pattern by maximizing B-H···H-O dihydrogen bonding, distinct structural arrangements of the water clusters within [B10H10]2-·nH2O are achieved with the water cluster networks from trimer to heptamer resembling free water clusters. Such a distinct difference arises from the variations in size, symmetry, and charge distributions between these two dianions. The present finding again confirms the structural diversity of hydrogen-bonding networks in microhydrated closo-boranes and enriches our understanding of aqueous borate chemistry.
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Affiliation(s)
- Wenjin Cao
- Physical Sciences Division, Pacific Northwest National Laboratory, 902 Battelle Boulevard, P.O. Box 999, Richland, Washington 99352, United States
| | - Zhubin Hu
- State Key Laboratory of Precision Spectroscopy, School of Physics and Electronic Science, East China Normal University, Shanghai 200241, China
| | - Haitao Sun
- State Key Laboratory of Precision Spectroscopy, School of Physics and Electronic Science, East China Normal University, Shanghai 200241, China
- Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan, Shanxi 030006, China
- NYU-ECNU Center for Computational Chemistry at NYU Shanghai, Shanghai 200062, China
| | - Xue-Bin Wang
- Physical Sciences Division, Pacific Northwest National Laboratory, 902 Battelle Boulevard, P.O. Box 999, Richland, Washington 99352, United States
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3
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Salluce G, Folgar-Cameán Y, Barba-Bon A, Nikšić-Franjić I, El Anwar S, Grüner B, Lostalé-Seijo I, Nau WM, Montenegro J. Size and Polarizability of Boron Cluster Carriers Modulate Chaotropic Membrane Transport. Angew Chem Int Ed Engl 2024; 63:e202404286. [PMID: 38712936 DOI: 10.1002/anie.202404286] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2024] [Revised: 04/24/2024] [Accepted: 05/02/2024] [Indexed: 05/08/2024]
Abstract
Perhalogenated closo-borates represent a new class of membrane carriers. They owe this activity to their chaotropicity, which enables the transport of hydrophilic molecules across model membranes and into living cells. The transport efficiency of this new class of cluster carriers depends on a careful balance between their affinity to membranes and cargo, which varies with chaotropicity. However, the structure-activity parameters that define chaotropic transport remain to be elucidated. Here, we have studied the modulation of chaotropic transport by decoupling the halogen composition from the boron core size. The binding affinity between perhalogenated decaborate and dodecaborate clusters carriers was quantified with different hydrophilic model cargos, namely a neutral and a cationic peptide, phalloidin and (KLAKLAK)2. The transport efficiency, membrane-lytic properties, and cellular toxicity, as obtained from different vesicle and cell assays, increased with the size and polarizability of the clusters. These results validate the chaotropic effect as the driving force behind the membrane transport propensity of boron clusters. This work advances our understanding of the structural features of boron cluster carriers and establishes the first set of rational design principles for chaotropic membrane transporters.
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Affiliation(s)
- Giulia Salluce
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CiQUS), Departamento de Química Orgánica, Universidade de Santiago de Compostela, 15705, Santiago de Compostela, Spain
| | - Yeray Folgar-Cameán
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CiQUS), Departamento de Química Orgánica, Universidade de Santiago de Compostela, 15705, Santiago de Compostela, Spain
| | - Andrea Barba-Bon
- School of Science, Constructor University, Campus Ring 1, 28759, Bremen, Germany
| | - Ivana Nikšić-Franjić
- School of Science, Constructor University, Campus Ring 1, 28759, Bremen, Germany
| | - Suzan El Anwar
- Institute of Inorganic Chemistry, Czech Academy of Sciences, v.v.i. Hlavní 1001, CZ-250 68, Řež, Czech Republic
| | - Bohumír Grüner
- Institute of Inorganic Chemistry, Czech Academy of Sciences, v.v.i. Hlavní 1001, CZ-250 68, Řež, Czech Republic
| | - Irene Lostalé-Seijo
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CiQUS), Departamento de Química Orgánica, Universidade de Santiago de Compostela, 15705, Santiago de Compostela, Spain
| | - Werner M Nau
- School of Science, Constructor University, Campus Ring 1, 28759, Bremen, Germany
| | - Javier Montenegro
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CiQUS), Departamento de Química Orgánica, Universidade de Santiago de Compostela, 15705, Santiago de Compostela, Spain
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4
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Wu Y, Salamat CZ, León Ruiz A, Simafranca AF, Akmanşen-Kalayci N, Wu EC, Doud E, Mehmedović Z, Lindemuth JR, Phan MD, Spokoyny AM, Schwartz BJ, Tolbert SH. Using Bulky Dodecaborane-Based Dopants to Produce Mobile Charge Carriers in Amorphous Semiconducting Polymers. CHEMISTRY OF MATERIALS : A PUBLICATION OF THE AMERICAN CHEMICAL SOCIETY 2024; 36:5552-5562. [PMID: 38883433 PMCID: PMC11171275 DOI: 10.1021/acs.chemmater.4c00502] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/22/2024] [Revised: 04/19/2024] [Accepted: 04/22/2024] [Indexed: 06/18/2024]
Abstract
Conjugated polymers are a versatile class of electronic materials featured in a variety of next-generation electronic devices. The utility of such polymers is contingent in large part on their electrical conductivity, which depends both on the density of charge carriers (polarons) and on the carrier mobility. Carrier mobility, in turn, is largely controlled by the separation between the polarons and dopant counterions, as counterions can produce Coulombic traps. In previous work, we showed that large dopants based on dodecaborane (DDB) clusters were able to reduce Coulombic binding and thus increase carrier mobility in regioregular (RR) poly(3-hexylthiophene-2,5-diyl) (P3HT). Here, we use a DDB-based dopant to study the effects of polaron-counterion separation in chemically doped regiorandom (RRa) P3HT, which is highly amorphous. X-ray scattering shows that the DDB dopants, despite their large size, can partially order the RRa P3HT during doping and produce a doped polymer crystal structure similar to that of DDB-doped RR P3HT; Alternating Field (AC) Hall measurements also confirm a similar hole mobility. We also show that use of the large DDB dopants successfully reduces Coulombic binding of polarons and counterions in amorphous polymer regions, resulting in a 77% doping efficiency in RRa P3HT films. The DDB dopants are able to produce RRa P3HT films with a 4.92 S/cm conductivity, a value that is ∼200× higher than that achieved with 3,5,6-tetrafluoro-7,7,8,8-tetracyanoquinodimethane (F4TCNQ), the traditional dopant molecule. These results show that tailoring dopants to produce mobile carriers in both the amorphous and semicrystalline regions of conjugated polymers is an effective strategy for increasing achievable polymer conductivities, particularly in low-cost polymers with random regiochemistry. The results also emphasize the importance of dopant size and shape for producing Coulombically unbound, mobile polarons capable of electrical conduction in less-ordered materials.
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Affiliation(s)
- Yutong Wu
- Department of Chemistry and Biochemistry, University of California Los Angeles, Los Angeles, California 90095-1569, United States
| | - Charlene Z Salamat
- Department of Chemistry and Biochemistry, University of California Los Angeles, Los Angeles, California 90095-1569, United States
| | - Alex León Ruiz
- Department of Chemistry and Biochemistry, University of California Los Angeles, Los Angeles, California 90095-1569, United States
| | - Alexander F Simafranca
- Department of Chemistry and Biochemistry, University of California Los Angeles, Los Angeles, California 90095-1569, United States
| | - Nesibe Akmanşen-Kalayci
- Department of Chemistry and Biochemistry, University of California Los Angeles, Los Angeles, California 90095-1569, United States
| | - Eric C Wu
- Department of Chemistry and Biochemistry, University of California Los Angeles, Los Angeles, California 90095-1569, United States
| | - Evan Doud
- Department of Chemistry and Biochemistry, University of California Los Angeles, Los Angeles, California 90095-1569, United States
| | - Zerina Mehmedović
- Department of Chemistry and Biochemistry, University of California Los Angeles, Los Angeles, California 90095-1569, United States
| | | | - Minh D Phan
- Center for Neutron Science, Department of Chemical and Biochemical Engineering, University of Delaware, Newark, Delaware 19716, United States
| | - Alexander M Spokoyny
- Department of Chemistry and Biochemistry, University of California Los Angeles, Los Angeles, California 90095-1569, United States
| | - Benjamin J Schwartz
- Department of Chemistry and Biochemistry, University of California Los Angeles, Los Angeles, California 90095-1569, United States
| | - Sarah H Tolbert
- Department of Chemistry and Biochemistry, University of California Los Angeles, Los Angeles, California 90095-1569, United States
- Department of Materials Science and Engineering, University of California Los Angeles, Los Angeles, California 90095-1595, United States
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5
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Cao W, Warneke J, Wang XB. Probing the Electronic Structure of [B 10H 10] 2- Dianion Encapsulated by an Octamethylcalix[4]pyrrole Molecule. J Phys Chem A 2024; 128:3361-3369. [PMID: 38651632 DOI: 10.1021/acs.jpca.4c01736] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/25/2024]
Abstract
Despite being an important closo-borate in condensed phase boron chemistry, isolated [B10H10]2- is electronically unstable and has never been detected in the gas phase. Herein, we report a successful capture of this fleeting species through binding with an octamethylcalix[4]pyrrole (omC4P) molecule to form a stable gaseous omC4P·[B10H10]2- complex and its characterizations utilizing negative ion photoelectron spectroscopy (NIPES). The recorded NIPE spectrum, contributed by both omC4P and [B10H10]2-, is deconvoluted by subtracting the omC4P contribution to yield a [B10H10]2- spectrum. The obtained [B10H10]2- spectrum consists of four major bands spanning the electron binding energy (EBE) range from 1 to 5 eV, with the EBE gaps matching excellently with the energy intervals of computed high-lying occupied molecular orbitals of the [B10H10]2- dianion. This study showcases a generic method to utilize omC4P to capture unstable multiply charged anions in the gas phase for experimental determination of their electronic structures.
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Affiliation(s)
- Wenjin Cao
- Physical Sciences Division, Pacific Northwest National Laboratory, 902 Battelle Boulevard, P.O. Box 999, Richland, Washington 99352, United States
| | - Jonas Warneke
- Wilhelm-Ostwald-Institute for Physical and Theoretical Chemistry, Leipzig University, Leipzig 04103, Germany
- Leibniz Institute of Surface Engineering (IOM), Permoserstraße 15, Leipzig 04318, Germany
| | - Xue-Bin Wang
- Physical Sciences Division, Pacific Northwest National Laboratory, 902 Battelle Boulevard, P.O. Box 999, Richland, Washington 99352, United States
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6
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Kilic M, Jena P. Activation of Small Molecules by Modified Dodecaborate Anions. J Phys Chem A 2024; 128:1993-2002. [PMID: 38456413 PMCID: PMC10961843 DOI: 10.1021/acs.jpca.3c07361] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2023] [Revised: 02/22/2024] [Accepted: 02/23/2024] [Indexed: 03/09/2024]
Abstract
Two of the basic requirements of a good catalyst are that molecules be bound to it with energies intermediate between physisorption and chemisorption and be simultaneously activated in the process. Using density functional theory, we have studied the interaction of small molecules such as H2, O2, N2, CO2, CO, and NH3 with modified dodecaborate anion [B12H12]2-, namely, [B12X11]- and [B12X11]2- (X = H, F, CN). Calculations of the structure, stability, and electronic properties of these species interacting with the above molecules show that they meet the above requirements. In addition, [B12X11]2- (X = F, CN) species are not only more stable than [B12X11]- species but also bind to O2 more strongly than their monoanion counterparts.
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Affiliation(s)
- Mehmet
Emin Kilic
- Department of Physics, Virginia Commonwealth University, Richmond, Virginia 23284-2000, United
States
| | - Puru Jena
- Department of Physics, Virginia Commonwealth University, Richmond, Virginia 23284-2000, United
States
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7
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Grams RJ, Santos WL, Scorei IR, Abad-García A, Rosenblum CA, Bita A, Cerecetto H, Viñas C, Soriano-Ursúa MA. The Rise of Boron-Containing Compounds: Advancements in Synthesis, Medicinal Chemistry, and Emerging Pharmacology. Chem Rev 2024; 124:2441-2511. [PMID: 38382032 DOI: 10.1021/acs.chemrev.3c00663] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/23/2024]
Abstract
Boron-containing compounds (BCC) have emerged as important pharmacophores. To date, five BCC drugs (including boronic acids and boroles) have been approved by the FDA for the treatment of cancer, infections, and atopic dermatitis, while some natural BCC are included in dietary supplements. Boron's Lewis acidity facilitates a mechanism of action via formation of reversible covalent bonds within the active site of target proteins. Boron has also been employed in the development of fluorophores, such as BODIPY for imaging, and in carboranes that are potential neutron capture therapy agents as well as novel agents in diagnostics and therapy. The utility of natural and synthetic BCC has become multifaceted, and the breadth of their applications continues to expand. This review covers the many uses and targets of boron in medicinal chemistry.
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Affiliation(s)
- R Justin Grams
- Department of Chemistry and Virginia Tech Center for Drug Discovery, Virginia Tech, 900 West Campus Drive, Blacksburg, Virginia 24061, United States
| | - Webster L Santos
- Department of Chemistry and Virginia Tech Center for Drug Discovery, Virginia Tech, 900 West Campus Drive, Blacksburg, Virginia 24061, United States
| | | | - Antonio Abad-García
- Academia de Fisiología y Sección de Estudios de Posgrado e Investigación, Escuela Superior de Medicina del Instituto Politécnico Nacional, Plan de San Luis y Díaz Mirón s/n, 11340 Mexico City, Mexico
| | - Carol Ann Rosenblum
- Department of Chemistry and Virginia Tech Center for Drug Discovery, Virginia Tech, 900 West Campus Drive, Blacksburg, Virginia 24061, United States
| | - Andrei Bita
- Department of Pharmacognosy & Phytotherapy, Faculty of Pharmacy, University of Medicine and Pharmacy of Craiova, 2 Petru Rareş Street, 200349 Craiova, Romania
| | - Hugo Cerecetto
- Centro de Investigaciones Nucleares, Facultad de Ciencias, Universidad de la República, Mataojo 2055, 11400 Montevideo, Uruguay
| | - Clara Viñas
- Institut de Ciència de Materials de Barcelona (ICMAB-CSIC), Campus UAB, 08193 Bellaterra, Spain
| | - Marvin A Soriano-Ursúa
- Academia de Fisiología y Sección de Estudios de Posgrado e Investigación, Escuela Superior de Medicina del Instituto Politécnico Nacional, Plan de San Luis y Díaz Mirón s/n, 11340 Mexico City, Mexico
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8
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Arslan ME, Baba C, Tozlu OO. Boron Compounds Mitigate 2,3,7,8-Tetrachlorodibenzo-p-dioxin-Induced Toxicity in Human Peripheral Blood Mononuclear Cells. TOXICS 2024; 12:98. [PMID: 38393193 PMCID: PMC10891549 DOI: 10.3390/toxics12020098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/11/2023] [Revised: 01/16/2024] [Accepted: 01/17/2024] [Indexed: 02/25/2024]
Abstract
2,3,7,8-Tetrachlorodibenzo-p-dioxin (TCDD) stands as one of the most potent halogenated polycyclic hydrocarbons, known to inflict substantial cytotoxic effects on both animal and human tissues. Its widespread presence and recalcitrance make it an environmental and health concern. Efforts are being intensively channeled to uncover strategies that could mitigate the adverse health outcomes associated with TCDD exposure. In the realm of counteractive agents, boron compounds are emerging as potential candidates. These compounds, which have found applications in a spectrum of industries ranging from agriculture to pharmaceutical and cosmetic manufacturing, are known to modulate several cellular processes and enzymatic pathways. However, the dose-response relationships and protective potentials of commercially prevalent boron compounds, such as boric acid (BA), ulexite (UX), and borax (BX), have not been comprehensively studied. In our detailed investigation, when peripheral blood mononuclear cells (PBMCs) were subjected to TCDD exposure, they manifested significant cellular disruptions. This was evidenced by compromised membrane integrity, a marked reduction in antioxidant defense mechanisms, and a surge in the malondialdehyde (MDA) levels, a recognized marker for oxidative stress. On the genomic front, increased 8-OH-dG levels and chromosomal aberration (CA) frequency suggested that TCDD had the potential to cause DNA damage. Notably, our experiments have revealed that boron compounds could act as protective agents against these disruptions. They exhibited a pronounced ability to diminish the cytotoxic, genotoxic, and oxidative stress outcomes instigated by TCDD. Thus, our findings shed light on the promising role of boron compounds. In specific dosages, they may not only counteract the detrimental effects of TCDD but also serve as potential chemopreventive agents, safeguarding the cellular and genomic integrity of PBMCs.
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Affiliation(s)
- Mehmet Enes Arslan
- Department of Molecular Biology and Genetics, Faculty of Sciences, Erzurum Technical University, 25050 Erzurum, Turkey; (C.B.); (O.O.T.)
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9
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Celebi O, Celebi D, Baser S, Aydın E, Rakıcı E, Uğraş S, Ağyar Yoldaş P, Baygutalp NK, Abd El-Aty AM. Antibacterial Activity of Boron Compounds Against Biofilm-Forming Pathogens. Biol Trace Elem Res 2024; 202:346-359. [PMID: 37464169 DOI: 10.1007/s12011-023-03768-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/30/2023] [Accepted: 07/05/2023] [Indexed: 07/20/2023]
Abstract
This study aimed to evaluate the antibacterial activity of nine boron derivatives against biofilm-forming pathogenic bacteria. The effect of boron derivatives (CMB, calcium metaborate; SMTB, sodium metaborate tetrahydrate; ZB, zinc borate; STFB, sodium tetra fluorine borate; STB, sodium tetraborate; PTFB, potassium tetra fluor borate; APTB, ammonium pentabo-rate tetrahydrate; SPM, sodium perborate monohydrate; Borax, ATFB, ammonium tetra fluorine borate) on bacteria isolated from blood culture was determined by the minimum inhibitory concentration (MIC) method. Then, biofilm formation potentials on microplates, tubes, and Congo red agar were examined. The cytotoxicity of boron derivatives was determined by using WST-1-based methods. The interaction between the biofilm-forming bacteria, fibroblast cells, and boron derivatives was determined with the infection model. We found that the sodium metaborate tetrahydrate molecule was effective against all pathogens. According to the optical density values detected at 630 nm in microplates, meticillin-resistant Staphylococcus aureus was observed to have the most substantial biofilm ability at 0.257 nm. As a result of cytotoxicity studies, it has been determined that a 1 µg/L concentration of boron derivatives is not toxic to fibroblast L929 cells. In cell culture experiments, these boron derivatives have very serious inhibitory activity against biofilm-forming pathogens in a short treatment period, such as 2-4 h. Furthermore, using these molecules on inanimate surfaces affected by biofilms would be appropriate instead of living cells.
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Affiliation(s)
- Ozgur Celebi
- Department of Medical Microbiology, Faculty of Medicine, Ataturk University, 25240, Erzurum, Turkey
| | - Demet Celebi
- Department of Microbiology, Faculty of Veterinary Medicine, Ataturk University, 25240, Erzurum, Turkey
- Ataturk University Vaccine Application and Development Center, Ataturk University, 25240, Erzurum, Turkey
| | - Sumeyye Baser
- Department of Medical Microbiology, Faculty of Medicine, Ataturk University, 25240, Erzurum, Turkey
| | - Elif Aydın
- Vocational School of Health Services, Kütahya Health Sciences University, Kütahya, Turkey.
| | - Erva Rakıcı
- Department of Medical Microbiology, Faculty of Medicine, Recep Tayyip Erdogan University, 53020, Rize, Turkey
| | - Serpil Uğraş
- Department of Field Crops, Faculty of Agriculture and Natural Science, Duzce University, 81620, Düzce, Turkey
| | - Pınar Ağyar Yoldaş
- Traditional and Complementary Medicine Applied and Research Center, Duzce University, Duzce, Turkey
| | - Nurcan Kılıç Baygutalp
- Department of Biochemistry, Faculty of Pharmacy, Ataturk University, 25240, Erzurum, Turkey
| | - A M Abd El-Aty
- Department of Medical Pharmacology, Faculty of Medicine, Ataturk University, 25240, Erzurum, Turkey
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10
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Kilic ME, Jena P. Catalytic Potential of [B 12X11] 2- ( X = F, Cl, Br, I, CN) Dianions. J Phys Chem Lett 2023; 14:8697-8701. [PMID: 37733639 DOI: 10.1021/acs.jpclett.3c02222] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/23/2023]
Abstract
Dodecaborate anions ([B12H12]2-) and their derivatives where hydrogen atoms are replaced by halogen, pseudohalogen, or superhalogen moieties belong to a class of very stable species, even in the gas phase. Their stability is attributed to Wade's electron counting rule that requires n + 1 pairs of skeletal electrons, n being the number of boron atoms. Consequently, [B12X11]2- (X = H, F, Cl, Br, I, CN) dianions that carry one more electron than needed to satisfy Wade's rule should not be stable, assuming that the rule applies to fragments as well. While this is the case for X = H, we show that [B12X11]2- (X = F, Cl, Br, I, CN) dianions are stable with the second electron in [B12(CN)11]2- bound by as much as 3.17 eV. More importantly, the stability of these dianions is found to have a significant effect on the activation of gas molecules such as CO2 and N2, providing a path toward the development of new catalysts.
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Affiliation(s)
- Mehmet Emin Kilic
- Department of Physics, Virginia Commonwealth University, Richmond, Virginia 23284-2000, United States
| | - Puru Jena
- Department of Physics, Virginia Commonwealth University, Richmond, Virginia 23284-2000, United States
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11
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Zhang X, Lin Y, Hosmane NS, Zhu Y. Nanostructured boron agents for boron neutron capture therapy: a review of recent patents. MEDICAL REVIEW (2021) 2023; 3:425-443. [PMID: 38283251 PMCID: PMC10811353 DOI: 10.1515/mr-2023-0013] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/23/2023] [Accepted: 06/16/2023] [Indexed: 01/30/2024]
Abstract
Boron neutron capture therapy (BNCT) is a potential radiation therapy modality for cancer, and tumor-targeted stable boron-10 (10B) delivery agents are an important component of BNCT. Currently, two low-molecular-weight boron-containing compounds, sodium mercaptoundecahydro-closo-dodecaborate (BSH) and boronophenylalanine (BPA), are mainly used in BNCT. Although both have suboptimal tumor selectivity, they have shown some therapeutic benefit in patients with high-grade glioma and several other tumors. To improve the efficacy of BNCT, great efforts have been devoted for the development of new boron delivery agents with better uptake and favorable pharmacokinetic profiles. This article reviews the application and research progress of boron nanomaterials as boron carriers in boron neutron capture therapy and hopes to stimulate people's interest in nanomaterial-based delivery agents by summarizing various kinds of boron nanomaterial patents disclosed in the past decade.
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Affiliation(s)
- Xiyin Zhang
- Shenzhen HEC Industrial Development Co., Ltd., Shenzhen, Guangdong Province, China
| | - Yusheng Lin
- Shenzhen HEC Industrial Development Co., Ltd., Shenzhen, Guangdong Province, China
| | - Narayan S. Hosmane
- Department of Chemistry and Biochemistry, Northern Illinois University, DeKalb, IL, USA
| | - Yinghuai Zhu
- Sunshine Lake Pharma Co. Ltd, Dongguan, Guangdong Province, China
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12
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Nelson YA, Irshad A, Kim S, Waddington MA, Salamat CZ, Gembicky M, Rheingold AL, Carta V, Tolbert S, Narayan SR, Spokoyny AM. Vertex Differentiation Strategy for Tuning the Physical Properties of closo-Dodecaborate Weakly Coordinating Anions. Inorg Chem 2023; 62:15084-15093. [PMID: 37667823 PMCID: PMC11152248 DOI: 10.1021/acs.inorgchem.3c01992] [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] [Indexed: 09/06/2023]
Abstract
We report the synthesis and characterization of various compounds containing the 1,7,9-hydroxylated closo-dodecahydrododecaborate (B12H9(OH)32-) cluster motif. Specifically, we show how the parent compound can be synthesized on the multigram scale and further perhalogenated, leading to a new class of vertex-differentiated weakly coordinating anions. We show that a postmodification of the hydroxyl groups by alkylation affords further opportunities for tailoring these anions' stability, steric bulk, and solubility properties. The resulting dodecaborate-based salts were subjected to a full thermal and electrochemical stability evaluation, showing that many of these anions maintain thermal stability up to 500 °C and feature no redox activity below ∼1 V vs Fc/Fc+. Mixed hydroxylated/halogenated clusters show enhanced solubility compared to their purely halogenated analogs and retain weakly coordinating properties in the solid state, as demonstrated by ionic conductivity measurements of their Li+ salts.
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Affiliation(s)
- Yessica A. Nelson
- Department of Chemistry and Biochemistry, University of California, Los Angeles, 607 Charles E. Young Drive East, Los Angeles, CA 90095, USA
| | - Ahamed Irshad
- Department of Chemistry, University of Southern California, Los Angeles, CA 90089, USA
| | - Sangmin Kim
- Department of Chemistry and Biochemistry, University of California, Los Angeles, 607 Charles E. Young Drive East, Los Angeles, CA 90095, USA
| | - Mary A. Waddington
- Department of Chemistry and Biochemistry, University of California, Los Angeles, 607 Charles E. Young Drive East, Los Angeles, CA 90095, USA
| | - Charlene Z. Salamat
- Department of Chemistry and Biochemistry, University of California, Los Angeles, 607 Charles E. Young Drive East, Los Angeles, CA 90095, USA
| | - Milan Gembicky
- Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, California 92093, USA
| | - Arnold L. Rheingold
- Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, California 92093, USA
| | - Veronica Carta
- Department of Chemistry and Biochemistry, University of California, Riverside, Riverside, California 92521, USA
| | - Sarah Tolbert
- Department of Chemistry and Biochemistry, University of California, Los Angeles, 607 Charles E. Young Drive East, Los Angeles, CA 90095, USA
- Department of Materials Science and Engineering, University of California, Los Angeles, Los Angeles, CA, 90095, USA
| | - Sri R. Narayan
- Department of Chemistry, University of Southern California, Los Angeles, CA 90089, USA
| | - Alexander M. Spokoyny
- Department of Chemistry and Biochemistry, University of California, Los Angeles, 607 Charles E. Young Drive East, Los Angeles, CA 90095, USA
- California NanoSystems Institute (CNSI), University of California, Los Angeles, 570 Westwood Plaza, Los Angeles, CA 90095, USA
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13
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Fujikawa Y, Fukuo Y, Nishimura K, Tsujino K, Kashiwagi H, Hiramatsu R, Nonoguchi N, Furuse M, Takami T, Hu N, Miyatake SI, Takata T, Tanaka H, Watanabe T, Suzuki M, Kawabata S, Nakamura H, Wanibuchi M. Evaluation of the Effectiveness of Boron Neutron Capture Therapy with Iodophenyl-Conjugated closo-Dodecaborate on a Rat Brain Tumor Model. BIOLOGY 2023; 12:1240. [PMID: 37759639 PMCID: PMC10525593 DOI: 10.3390/biology12091240] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/08/2023] [Revised: 09/12/2023] [Accepted: 09/13/2023] [Indexed: 09/29/2023]
Abstract
High-grade gliomas present a significant challenge in neuro-oncology because of their aggressive nature and resistance to current therapies. Boron neutron capture therapy (BNCT) is a potential treatment method; however, the boron used by the carrier compounds-such as 4-borono-L-phenylalanine (L-BPA)-have limitations. This study evaluated the use of boron-conjugated 4-iodophenylbutanamide (BC-IP), a novel boron compound in BNCT, for the treatment of glioma. Using in vitro drug exposure experiments and in vivo studies, we compared BC-IP and BPA, with a focus on boron uptake and retention characteristics. The results showed that although BC-IP had a lower boron uptake than BPA, it exhibited superior retention. Furthermore, despite lower boron accumulation in tumors, BNCT mediated by BC-IP showed significant survival improvement in glioma-bearing rats compared to controls (not treated animals and neutrons only). These results suggest that BC-IP, with its unique properties, may be an alternative boron carrier for BNCT. Further research is required to optimize this potential treatment modality, which could significantly contribute to advancing the treatment of high-grade gliomas.
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Affiliation(s)
- Yoshiki Fujikawa
- Department of Neurosurgery, Osaka Medical and Pharmaceutical University, Osaka 569-8686, Japan; (Y.F.); (Y.F.); (K.T.); (H.K.); (R.H.); (N.N.); (M.F.); (T.T.); (M.W.)
| | - Yusuke Fukuo
- Department of Neurosurgery, Osaka Medical and Pharmaceutical University, Osaka 569-8686, Japan; (Y.F.); (Y.F.); (K.T.); (H.K.); (R.H.); (N.N.); (M.F.); (T.T.); (M.W.)
| | - Kai Nishimura
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology, Yokohama 226-8503, Japan; (K.N.); (H.N.)
| | - Kohei Tsujino
- Department of Neurosurgery, Osaka Medical and Pharmaceutical University, Osaka 569-8686, Japan; (Y.F.); (Y.F.); (K.T.); (H.K.); (R.H.); (N.N.); (M.F.); (T.T.); (M.W.)
| | - Hideki Kashiwagi
- Department of Neurosurgery, Osaka Medical and Pharmaceutical University, Osaka 569-8686, Japan; (Y.F.); (Y.F.); (K.T.); (H.K.); (R.H.); (N.N.); (M.F.); (T.T.); (M.W.)
| | - Ryo Hiramatsu
- Department of Neurosurgery, Osaka Medical and Pharmaceutical University, Osaka 569-8686, Japan; (Y.F.); (Y.F.); (K.T.); (H.K.); (R.H.); (N.N.); (M.F.); (T.T.); (M.W.)
| | - Naosuke Nonoguchi
- Department of Neurosurgery, Osaka Medical and Pharmaceutical University, Osaka 569-8686, Japan; (Y.F.); (Y.F.); (K.T.); (H.K.); (R.H.); (N.N.); (M.F.); (T.T.); (M.W.)
| | - Motomasa Furuse
- Department of Neurosurgery, Osaka Medical and Pharmaceutical University, Osaka 569-8686, Japan; (Y.F.); (Y.F.); (K.T.); (H.K.); (R.H.); (N.N.); (M.F.); (T.T.); (M.W.)
| | - Toshihiro Takami
- Department of Neurosurgery, Osaka Medical and Pharmaceutical University, Osaka 569-8686, Japan; (Y.F.); (Y.F.); (K.T.); (H.K.); (R.H.); (N.N.); (M.F.); (T.T.); (M.W.)
| | - Naonori Hu
- Kansai BNCT Medical Center, Osaka Medical and Pharmaceutical University, Osaka 569-8686, Japan; (N.H.); (S.-I.M.)
| | - Shin-Ichi Miyatake
- Kansai BNCT Medical Center, Osaka Medical and Pharmaceutical University, Osaka 569-8686, Japan; (N.H.); (S.-I.M.)
| | - Takushi Takata
- Institute for Integrated Radiation and Nuclear Science, Kyoto University, Osaka 590-0494, Japan; (T.T.); (H.T.); (T.W.); (M.S.)
| | - Hiroki Tanaka
- Institute for Integrated Radiation and Nuclear Science, Kyoto University, Osaka 590-0494, Japan; (T.T.); (H.T.); (T.W.); (M.S.)
| | - Tsubasa Watanabe
- Institute for Integrated Radiation and Nuclear Science, Kyoto University, Osaka 590-0494, Japan; (T.T.); (H.T.); (T.W.); (M.S.)
| | - Minoru Suzuki
- Institute for Integrated Radiation and Nuclear Science, Kyoto University, Osaka 590-0494, Japan; (T.T.); (H.T.); (T.W.); (M.S.)
| | - Shinji Kawabata
- Department of Neurosurgery, Osaka Medical and Pharmaceutical University, Osaka 569-8686, Japan; (Y.F.); (Y.F.); (K.T.); (H.K.); (R.H.); (N.N.); (M.F.); (T.T.); (M.W.)
| | - Hiroyuki Nakamura
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology, Yokohama 226-8503, Japan; (K.N.); (H.N.)
| | - Masahiko Wanibuchi
- Department of Neurosurgery, Osaka Medical and Pharmaceutical University, Osaka 569-8686, Japan; (Y.F.); (Y.F.); (K.T.); (H.K.); (R.H.); (N.N.); (M.F.); (T.T.); (M.W.)
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14
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Nussbaum BC, Humphries AL, Gange GB, Peryshkov DV. Redox-active carborane clusters in bond activation chemistry and ligand design. Chem Commun (Camb) 2023; 59:9918-9928. [PMID: 37522167 DOI: 10.1039/d3cc03011c] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/01/2023]
Abstract
Icosahedral closo-dodecaboranes have the ability to accept two electrons, opening into a dianionic nido-cluster. This transformation can be utilized to store electrons, drive bond activation, or alter coordination to metal cations. In this feature article, we present cases for each of these applications, wherein the redox activity of carborane facilitates the generation of unique products. We highlight the effects of exohedral substituents on reactivity and the stability of the products through conjugation between the cluster and exohedral substituents. Futher, the utilization of the redox properties and geometry of carborane clusters in the ligand design is detailed, both in the stabilization of low-valent complexes and in the tuning of ligand geometry.
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Affiliation(s)
- Bryce C Nussbaum
- Department of Chemistry and Biochemistry, University of South Carolina, 631 Sumter St, Columbia, South Carolina 29208, USA.
| | - Amanda L Humphries
- Department of Chemistry and Biochemistry, University of South Carolina, 631 Sumter St, Columbia, South Carolina 29208, USA.
| | - Gayathri B Gange
- Department of Chemistry and Biochemistry, University of South Carolina, 631 Sumter St, Columbia, South Carolina 29208, USA.
| | - Dmitry V Peryshkov
- Department of Chemistry and Biochemistry, University of South Carolina, 631 Sumter St, Columbia, South Carolina 29208, USA.
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15
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Chen Y, Barba-Bon A, Grüner B, Winterhalter M, Aksoyoglu MA, Pangeni S, Ashjari M, Brix K, Salluce G, Folgar-Cameán Y, Montenegro J, Nau WM. Metallacarborane Cluster Anions of the Cobalt Bisdicarbollide-Type as Chaotropic Carriers for Transmembrane and Intracellular Delivery of Cationic Peptides. J Am Chem Soc 2023; 145:13089-13098. [PMID: 37265356 PMCID: PMC10288510 DOI: 10.1021/jacs.3c01623] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2023] [Indexed: 06/03/2023]
Abstract
Cobalt bisdicarbollides (COSANs) are inorganic boron-based anions that have been previously reported to permeate by themselves through lipid bilayer membranes, a propensity that is related to their superchaotropic character. We now introduce their use as selective and efficient molecular carriers of otherwise impermeable hydrophilic oligopeptides through both artificial and cellular membranes, without causing membrane lysis or poration at low micromolar carrier concentrations. COSANs transport not only arginine-rich but also lysine-rich peptides, whereas low-molecular-weight analytes such as amino acids as well as neutral and anionic cargos (phalloidin and BSA) are not transported. In addition to the unsubstituted isomers (known as ortho- and meta-COSAN), four derivatives bearing organic substituents or halogen atoms have been evaluated, and all six of them surpass established carriers such as pyrenebutyrate in terms of activity. U-tube experiments and black lipid membrane conductance measurements establish that the transport across model membranes is mediated by a molecular carrier mechanism. Transport experiments in living cells showed that a fluorescent peptide cargo, FITC-Arg8, is delivered into the cytosol.
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Affiliation(s)
- Yao Chen
- School
of Science, Constructor University, Campus Ring 1, 28759 Bremen, Germany
| | - Andrea Barba-Bon
- School
of Science, Constructor University, Campus Ring 1, 28759 Bremen, Germany
| | - Bohumir Grüner
- Institute
of Inorganic Chemistry, Czech Academy of Sciences, v.v.i. Hlavní 1001, CZ-250 68 Řež, Czech Republic
| | | | - M. Alphan Aksoyoglu
- School
of Science, Constructor University, Campus Ring 1, 28759 Bremen, Germany
| | - Sushil Pangeni
- School
of Science, Constructor University, Campus Ring 1, 28759 Bremen, Germany
| | - Maryam Ashjari
- School
of Science, Constructor University, Campus Ring 1, 28759 Bremen, Germany
| | - Klaudia Brix
- School
of Science, Constructor University, Campus Ring 1, 28759 Bremen, Germany
| | - Giulia Salluce
- Centro
Singular de Investigación en Química Biolóxica
e Materiais Moleculares (CiQUS), Universidade
de Santiago de Compostela, Jenaro de la Fuente s/n, 15782 Santiago de Compostela, Spain
| | - Yeray Folgar-Cameán
- Centro
Singular de Investigación en Química Biolóxica
e Materiais Moleculares (CiQUS), Universidade
de Santiago de Compostela, Jenaro de la Fuente s/n, 15782 Santiago de Compostela, Spain
| | - Javier Montenegro
- Centro
Singular de Investigación en Química Biolóxica
e Materiais Moleculares (CiQUS), Universidade
de Santiago de Compostela, Jenaro de la Fuente s/n, 15782 Santiago de Compostela, Spain
| | - Werner M. Nau
- School
of Science, Constructor University, Campus Ring 1, 28759 Bremen, Germany
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16
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Teixidor F, Núñez R, Viñas C. Towards the Application of Purely Inorganic Icosahedral Boron Clusters in Emerging Nanomedicine. Molecules 2023; 28:molecules28114449. [PMID: 37298925 DOI: 10.3390/molecules28114449] [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: 04/27/2023] [Revised: 05/21/2023] [Accepted: 05/24/2023] [Indexed: 06/12/2023] Open
Abstract
Traditionally, drugs were obtained by extraction from medicinal plants, but more recently also by organic synthesis. Today, medicinal chemistry continues to focus on organic compounds and the majority of commercially available drugs are organic molecules, which can incorporate nitrogen, oxygen, and halogens, as well as carbon and hydrogen. Aromatic organic compounds that play important roles in biochemistry find numerous applications ranging from drug delivery to nanotechnology or biomarkers. We achieved a major accomplishment by demonstrating experimentally/theoretically that boranes, carboranes, as well as metallabis(dicarbollides), exhibit global 3D aromaticity. Based on the stability-aromaticity relationship, as well as on the progress made in the synthesis of derivatized clusters, we have opened up new applications of boron icosahedral clusters as key components in the field of novel healthcare materials. In this brief review, we present the results obtained at the Laboratory of Inorganic Materials and Catalysis (LMI) of the Institut de Ciència de Materials de Barcelona (ICMAB-CSIC) with icosahedral boron clusters. These 3D geometric shape clusters, the semi-metallic nature of boron and the presence of exo-cluster hydrogen atoms that can interact with biomolecules through non-covalent hydrogen and dihydrogen bonds, play a key role in endowing these compounds with unique properties in largely unexplored (bio)materials.
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Affiliation(s)
- Francesc Teixidor
- Institut de Ciència de Materials de Barcelona, ICMAB-CSIC, 08193 Bellaterra, Spain
| | - Rosario Núñez
- Institut de Ciència de Materials de Barcelona, ICMAB-CSIC, 08193 Bellaterra, Spain
| | - Clara Viñas
- Institut de Ciència de Materials de Barcelona, ICMAB-CSIC, 08193 Bellaterra, Spain
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17
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Zhang J, Gabel D, Assaf KI, Nau WM. A Fluorescein-Substituted Perbrominated Dodecaborate Cluster as an Anchor Dye for Large Macrocyclic Hosts and Its Application in Indicator Displacement Assays. Org Lett 2022; 24:9184-9188. [PMID: 36507622 DOI: 10.1021/acs.orglett.2c03615] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Perhalogenated boron clusters derived from B12Br122-, a superchaotropic dianion with a globular icosahedral shape, serve as inorganic cavity binders for cyclodextrins (CDs), in particular for large CDs (γ-CD and δ-CD), with high binding affinity (Ka > 106 M-1) in aqueous solution. This opens the door for applications of this anchoring moiety by linking it to organic residues, prominently fluorescent dyes. We report here the synthesis of a novel fluorescein-substituted perbrominated dodecaborate cluster by a copper(I)-catalyzed azide-alkyne click reaction. The formation of host-guest inclusion complexes between the dodecaborate-modified fluorescein dye and CDs can be readily followed by optical titrations, which afforded a binding constant of ∼1 × 104 M-1 with γ-CD; that is, the cluster functionalization allows binding of an otherwise nonbinding dye to the macrocycle ("anchor dye"). The formation of the 1:1 host-guest inclusion complex between the dye and γ-CD occurs over a broad range of pH values, which allows its application as a sensitive reporter pair according to the indicator displacement method, e.g., for drug detection. In addition, the substituted dye shows outer-wall binding to cucurbiturils through the dodecaborate moiety, leading to the formation of aggregates and significant fluorescence quenching of the dye.
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Affiliation(s)
- Jinling Zhang
- Jacobs University Bremen, School of Science, Campus Ring 1, 28759 Bremen, Germany
| | - Detlef Gabel
- Jacobs University Bremen, School of Science, Campus Ring 1, 28759 Bremen, Germany
| | - Khaleel I Assaf
- Department of Chemistry, Faculty of Science, Al-Balqa Applied University, 19117 Al-Salt, Jordan
| | - Werner M Nau
- Jacobs University Bremen, School of Science, Campus Ring 1, 28759 Bremen, Germany
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18
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Samudre NS, Singh CP, Krishnamurty S. Understanding the thermal stability of a 3d, 4d, and 5d element doped aluminium nanocluster through BOMD simulations. MOLECULAR SIMULATION 2022. [DOI: 10.1080/08927022.2022.2153151] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Nikhil S. Samudre
- Physical Chemistry Division, CSIR-National Chemical Laboratory, Pune, India
- Academy of Scientific and Innovative Research, CSIR-Human Resource Development Centre (CSIR-HRDC) Campus, Ghaziabad, Uttar Pradesh, India
| | - Chandrodai Pratap Singh
- Physical Chemistry Division, CSIR-National Chemical Laboratory, Pune, India
- Academy of Scientific and Innovative Research, CSIR-Human Resource Development Centre (CSIR-HRDC) Campus, Ghaziabad, Uttar Pradesh, India
| | - Sailaja Krishnamurty
- Physical Chemistry Division, CSIR-National Chemical Laboratory, Pune, India
- Academy of Scientific and Innovative Research, CSIR-Human Resource Development Centre (CSIR-HRDC) Campus, Ghaziabad, Uttar Pradesh, India
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19
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Effect of Nature of Substituents on Coordination Properties of Mono- and Disubstituted Derivatives of Boron Cluster Anions [BnHn]2– (n = 10, 12) and Carboranes with exo-Polyhedral B–X Bonds (X = N, O, S, Hal). INORGANICS 2022. [DOI: 10.3390/inorganics10120238] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/10/2022] Open
Abstract
This review systematizes data on the coordination ability of mono- and disubstituted derivatives of boron cluster anions and carboranes in complexation with transition metals. Boron clusters anions [BnHn]2–, monocarborane anions [CBnHn–1]–, and dicarboranes [C2BnHn–2] (with non-functionalized carbon atoms) (n = 10, 12) containing the B–X exo-polyhedral bonds (X = N, O, S, Hal) are discussed. Synthesis and structural features of complexes known to date are described. The effect of complexing metal and substituent attached to the boron cage on the composition and structures of the final complexes is analyzed. It has been established that substituted derivatives of boron cluster anions and carboranes can act as both ligands and counterions. A complexing agent can coordinate substituted derivatives of the boron cluster anions due to three-center two-electron 3c2e MHB bonds, by the substituent functional groups, or a mixed type of coordination can be realized, through the BH groups of the boron cage and the substituent. As for B-substituted carboranes, complexes with coordinated substituents or salts with non-coordinated carborane derivatives have been isolated; compounds with MHB bonding are not characteristic of carboranes.
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20
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Klyukin IN, Kolbunova AV, Selivanov NA, Bykov AY, Kubasov AS, Zhdanov AP, Zhizhin KY, Kuznetsov NT. Study of Protonation of Ethyloxy Derivative of closo-Decaborate anion [B10H9OC2H5]2–. RUSS J INORG CHEM+ 2022. [DOI: 10.1134/s003602362260085x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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21
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Neumolotov NK, Selivanov NA, Bykov AY, Klyukin IN, Novikov AS, Zhdanov AP, Zhizin KY, Kuznetsov NT. New Methods for Preparation of the Monofluorosubstituted Derivative of the closo-Borate Anion [2-B10H9F]2–, Its Properties, and Analysis of Its Reactivity. RUSS J INORG CHEM+ 2022. [DOI: 10.1134/s0036023622600861] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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22
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Avdeeva V, Malinina E, Kuznetsov N. Boron cluster anions and their derivatives in complexation reactions. Coord Chem Rev 2022. [DOI: 10.1016/j.ccr.2022.214636] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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23
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Nikiforova SE, Kubasov AS, Goeva LV, Avdeeva VV, Malinina EA, Kuznetsov NT. Features of the formation of d10 metal complexes with benzimidazoles derivatives in the presence of the closo-decaborate anion. Polyhedron 2022. [DOI: 10.1016/j.poly.2022.116108] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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24
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Soleimani M. Cyclo-, Closo- and hypercloso-aminoboranes; B-B bonding, 3D-aromaticity, stability and NICS values. Polyhedron 2022. [DOI: 10.1016/j.poly.2022.115911] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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25
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Tahaoğlu D, Usta H, Alkan F. Revisiting the Role of Charge Transfer in the Emission Properties of Carborane-Fluorophore Systems: A TDDFT Investigation. J Phys Chem A 2022; 126:4199-4210. [PMID: 35658432 PMCID: PMC9272399 DOI: 10.1021/acs.jpca.2c02435] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022]
Abstract
In this study, we performed a detailed investigation of the S1 potential energy surface (PES) of o-carborane-anthracene (o-CB-Ant) with respect to the C-C bond length on o-CB and the dihedral angle between o-CB and Ant moieties. The effects of different substituents (F, Cl, CN, and OH) on carbon- or boron-substituted o-CB, along with a π-extended acene-based fluorophore, pentacene, on the nature and energetics of S1 → S0 transitions are evaluated. Our results show the presence of a non-emissive S1 state with an almost pure charge transfer (CT) character for all systems as a result of significant C-C bond elongation (C-C = 2.50-2.56 Å) on o-CB. In the case of unsubstituted o-CB-Ant, the adiabatic energy of this CT state corresponds to the global minimum on the S1 PES, which suggests that the CT state could be involved in emission quenching. Despite large deformations on the o-CB geometry, predicted energy barriers are quite reasonable (0.3-0.4 eV), and the C-C bond elongation can even occur without a noticeable energy penalty for certain conformations. With substitution, it is shown that the dark CT state becomes even more energetically favorable when the substituent shows -M effects (e.g., -CN), whereas substituents showing +M effects (e.g., -OH) can result in an energy increase for the CT state, especially for partially stretched C-C bond lengths. It is also shown that the relative energy of the CT state on the PES depends strongly on the LUMO level of the fluorophore as this state is found to be energetically less favorable compared to other conformations when anthracene is replaced with π-extended pentacene. To our knowledge, this study shows a unique example of a detailed theoretical analysis on the PES of the S1 state in o-CB-fluorophore systems with respect to substituents or fluorophore energy levels. Our findings could guide future experimental work in emissive o-CB-fluorophore systems and their sensing/optoelectronic applications.
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Affiliation(s)
- Duygu Tahaoğlu
- Department of Nanotechnology Engineering, Abdullah Gül University, Kayseri 38080, Turkey
| | - Hakan Usta
- Department of Nanotechnology Engineering, Abdullah Gül University, Kayseri 38080, Turkey
| | - Fahri Alkan
- Department of Nanotechnology Engineering, Abdullah Gül University, Kayseri 38080, Turkey
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26
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Iodophenyl-conjugated closo-dodecaborate as a promising small boron molecule that binds to serum albumin and accumulates in tumor. Bioorg Med Chem Lett 2022; 72:128869. [PMID: 35772634 DOI: 10.1016/j.bmcl.2022.128869] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2022] [Revised: 06/19/2022] [Accepted: 06/22/2022] [Indexed: 11/21/2022]
Abstract
The development of novel boron carriers applicable to various cancers is required for further expansion of boron neutron capture therapy (BNCT). In this study, we took advantage of the fact that serum albumin accumulates in tumors and developed a boron compound that interacts non-covalently with the serum albumin. 4-Iodophenylbutanamide was chosen as an albumin ligand and conjugated with closo-dodecaborate (boron-conjugated 4-iodophenylbutanamide: BC-IP). BC-IP was found to be water soluble with low cytotoxicity. The IC50 values of BC-IP were 475 µM for U87MG cells, 738 µM for HeLa cells, and > 1000 µM for A549 cells. The dissociation constant (Kd) value of BC-IP to HSA was 148 ± 8 μM, while that of disodium closo-dodecaborate (4) was > 1000 μM. Significant tumor accumulation was observed in the U87MG tumor mouse model 3 h after injection. The boron concentration in the tumor reached a maximum of 11 μgB/g at 3 h and gradually decreased to 2.4 and 2.3 μgB/g at 12 and 24 h, respectively.
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27
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New type of RNA virus replication inhibitor based on decahydro-closo-decaborate anion containing amino acid ester pendant group. J Biol Inorg Chem 2022; 27:421-429. [PMID: 35332377 PMCID: PMC8948040 DOI: 10.1007/s00775-022-01937-4] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2021] [Accepted: 03/03/2022] [Indexed: 12/04/2022]
Abstract
In this work, a synthetic approach to prepare an example of new class of the derivatives of the closo-decaborate anion with amino acids detached from the boron cluster by pendant group has been proposed and implemented. Compound Na2[B10H9–O(CH2)4C(O)–His–OMe] was isolated and characterized. This compound has an inorganic hydrophobic core which is the 10-vertex boron cage and the –O(CH2)4C(O)–His–OMe organic substituent. It has been shown to possess strong antiviral activity in vitro against modern strains of A/H1N1 virus at 10 and 5 µg/mL. The compound has been found to be non-cytotoxic up to 160 µg/mL. At the same time, the compound has been found to be inactive against SARS-CoV-2, indicating specific activity against RNA virus replication. Molecular docking of the target derivative of the closo-decaborate anion with a model of the transmembrane region of the M2 protein has been performed and the mechanism of its antiviral action is discussed.
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Varkhedkar R, Yang F, Dontha R, Zhang J, Liu J, Spingler B, van der Veen S, Duttwyler S. Natural-Product-Directed Catalytic Stereoselective Synthesis of Functionalized Fused Borane Cluster-Oxazoles for the Discovery of Bactericidal Agents. ACS CENTRAL SCIENCE 2022; 8:322-331. [PMID: 35350606 PMCID: PMC8949637 DOI: 10.1021/acscentsci.1c01132] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/22/2021] [Indexed: 06/14/2023]
Abstract
The identification of an alternative chemical space in order to address the global challenge posed by emerging antimicrobial resistance is very much needed for the discovery of novel antimicrobial lead compounds. Boron clusters are currently being explored in drug discovery due to their unique steric and electronic properties. However, the challenges associated with the synthesis and derivatization techniques of these compounds have limited their utility in the rapid construction of a library of molecules for screening against various biological targets as an alternative molecular platform. Herein, we report a transition-metal-catalyzed regioselective direct B-H alkylation-annulation of the closo-dodecaborate anion with natural products such as menthol and camphor as the directing groups. This method allowed the rapid construction of a library of 1,2,3-trisubstituted clusters, which were evaluated in terms of their antibacterial activity against WHO priority pathogens. Several of the synthesized dodecaborate derivatives displayed medium- to high-level bactericidal activity against Gram-positive and Gram-negative bacteria.
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Affiliation(s)
- Rajesh Varkhedkar
- Department
of Chemistry, Zhejiang University, 38 Zheda Road, 310027 Hangzhou, People’s
Republic of China
| | - Fan Yang
- Department
of Microbiology, and Department of Dermatology, Sir Run Run Shaw Hospital,
School of Medicine, Zhejiang University, 866 Yuhangtang Road, 310058 Hangzhou, People’s Republic of China
| | - Rakesh Dontha
- Department
of Chemistry, Zhejiang University, 38 Zheda Road, 310027 Hangzhou, People’s
Republic of China
| | - Jianglin Zhang
- Department
of Microbiology, and Department of Dermatology, Sir Run Run Shaw Hospital,
School of Medicine, Zhejiang University, 866 Yuhangtang Road, 310058 Hangzhou, People’s Republic of China
| | - Jiyong Liu
- Department
of Chemistry, Zhejiang University, 38 Zheda Road, 310027 Hangzhou, People’s
Republic of China
| | - Bernhard Spingler
- Department
of Chemistry, University of Zurich, Winterthurerstrasse 190, 8057 Zurich, Switzerland
| | - Stijn van der Veen
- Department
of Microbiology, and Department of Dermatology, Sir Run Run Shaw Hospital,
School of Medicine, Zhejiang University, 866 Yuhangtang Road, 310058 Hangzhou, People’s Republic of China
| | - Simon Duttwyler
- Department
of Chemistry, Zhejiang University, 38 Zheda Road, 310027 Hangzhou, People’s
Republic of China
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Wang Y, Spokoyny AM. Abiotic Main Group Pharmacophore Renders a New Class of Antimicrobial Agents. ACS CENTRAL SCIENCE 2022; 8:309-311. [PMID: 35350607 PMCID: PMC8949626 DOI: 10.1021/acscentsci.2c00187] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Affiliation(s)
- Yueying Wang
- Department of Chemistry
and Biochemistry, University of California, Los Angeles 90095, United States
| | - Alexander M. Spokoyny
- Department of Chemistry
and Biochemistry, University of California, Los Angeles 90095, United States
- California NanoSystems Institute (CNSI), University of California, Los Angeles 90095, United States
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Haridas A, Bedajna S, Ghosh S. Substitution at B-H vertices of group 5 metallaborane clusters. J Organomet Chem 2022. [DOI: 10.1016/j.jorganchem.2021.122250] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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31
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Hollow SE, Johnstone TC. Encapsulation of closo-dodecaiodododecaborate in 2-hydroxypropyl-γ-cyclodextrin prevents hemolysis. Chem Commun (Camb) 2022; 58:2375-2378. [PMID: 35080538 DOI: 10.1039/d1cc06348k] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Na2B12I12 has many of the properties desired by an X-ray contrast agent but is lethal at the concentrations needed for medical imaging. We demonstrate here that PBS solutions with >50 mM Na2B12I12 induce hemolysis, consistent with the previously reported superchaotropic nature of the anion. The presence of <1 equiv. of 2-hydroxypropyl-γ-cyclodextrin prevents hemolysis and suggests a strategy for exploiting B12I122- as an X-ray contrast agent.
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Affiliation(s)
- Sophia E Hollow
- Department of Chemistry and Biochemistry, University of California, Santa Cruz, California 95064, USA.
| | - Timothy C Johnstone
- Department of Chemistry and Biochemistry, University of California, Santa Cruz, California 95064, USA.
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32
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Avdeeva VV, Kubasov AS, Korolenko SE, Privalov VI, Malinina EA, Kuznetsov NT. Iron(II), cobalt(II), and nickel(II) complexes with 1,10-phenanthroline and 2,2’-bipyridyl and the macropolyhedral borane cluster [trans-B20H18]2- as counterion. Polyhedron 2022. [DOI: 10.1016/j.poly.2022.115740] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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33
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Sun W, Jin Y, Wu Y, Lou W, Yuan Y, Duttwyler S, Wang L, Zhang Y. A new boron cluster anion pillared metal organic framework with ligand inclusion and its selective acetylene capture properties. Inorg Chem Front 2022. [DOI: 10.1039/d2qi00890d] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
A novel microporous boron cluster pillared metal–organic framework BSF-10 was synthesized with ligand inclusion for efficient C2H2/CO2 and C2H2/C2H4 adsorption separation.
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Affiliation(s)
- Wanqi Sun
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, College of Chemistry and Life Sciences, Zhejiang Normal University, Jinhua 321004, China
| | - Yujie Jin
- Department of Chemistry, Zhejiang University, 38 Zheda Road, 310027 Hangzhou, P. R. China
| | - Yilian Wu
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, College of Chemistry and Life Sciences, Zhejiang Normal University, Jinhua 321004, China
| | - Wushuang Lou
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, College of Chemistry and Life Sciences, Zhejiang Normal University, Jinhua 321004, China
| | - Yanbin Yuan
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, College of Chemistry and Life Sciences, Zhejiang Normal University, Jinhua 321004, China
| | - Simon Duttwyler
- Department of Chemistry, Zhejiang University, 38 Zheda Road, 310027 Hangzhou, P. R. China
| | - Lingyao Wang
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, College of Chemistry and Life Sciences, Zhejiang Normal University, Jinhua 321004, China
| | - Yuanbin Zhang
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, College of Chemistry and Life Sciences, Zhejiang Normal University, Jinhua 321004, China
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34
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Gündüz MK, Bolat M, Kaymak G, Berikten D, Köse DA. Therapeutic Effects of Newly Synthesized Boron Compounds (BGM and BGD) on Hepatocellular Carcinoma. Biol Trace Elem Res 2022; 200:134-146. [PMID: 33634364 DOI: 10.1007/s12011-021-02647-9] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/14/2021] [Accepted: 02/17/2021] [Indexed: 01/08/2023]
Abstract
Boron has an important potential for facilitating biological activity and for use in pharmaceutical drug design. Boron glycine monoester (BGM) and boron glycine diester (BGD) compounds containing boron atoms were synthesized and investigated their cytotoxic, oxidative stress, and antimicrobial activities on the HepG2 cancer cell line. The cytotoxic activity of newly synthesized boron compounds on hepatocellular carcinoma was determined by the MTT method for 48 h. Antioxidant (CAT, GSH), lipid peroxidation (MDA), and enzyme activity (ACP, ALP) analyses were determined by spectrophotometric methods in HepG2 cells. Antimicrobial activity was determined by the disk diffusion method. After 48 h of BGM and BGD application to HepG2 cells, we found the IC50 values as 9.9 mM and 24 mM, respectively. While CAT and ACP enzyme activities decreased in all groups compared to the control, ALP enzyme activity did not change in the BGM group but increased in the BGD group. It was determined that the GSH level did not change in all groups, while the MDA level increased. It has been stated that these IC50 doses of BGM and BGD have antibacterial effects on Staphylococcus aureus ATCC 29213 and Escherichia coli ATCC 25922. Newly synthesized boron compounds, particularly BGM, with their cytotoxic, oxidative stress, and antimicrobial effects, could provide a new therapeutic approach for the treatment of hepatocellular carcinoma.
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Affiliation(s)
| | - Melda Bolat
- Department of Property Protection and Safety, Technical Sciences Vocational School, Hitit University, Çorum, Turkey
| | - Güllü Kaymak
- Simav Vocational School of Health Services, Kütahya Health Sciences University, Kütahya, Turkey
| | - Derya Berikten
- Training and Research Center, Kütahya Health Sciences University, Kütahya, Turkey
| | - Dursun Ali Köse
- Department of Chemistry, Faculty of Arts and Sciences, Hitit University, Çorum, Turkey
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35
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Duttwyler S. Derivatization of monocarborane and dodecaborate anions by controlled B H activation. ADVANCES IN CATALYSIS 2022. [DOI: 10.1016/bs.acat.2022.05.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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36
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Nelyubin AV, Selivanov NA, Bykov AY, Klyukin IN, Novikov AS, Zhdanov AP, Karpechenko NY, Grigoriev MS, Zhizhin KY, Kuznetsov NT. Primary Amine Nucleophilic Addition to Nitrilium Closo-Dodecaborate [B 12H 11NCCH 3] -: A Simple and Effective Route to the New BNCT Drug Design. Int J Mol Sci 2021; 22:ijms222413391. [PMID: 34948186 PMCID: PMC8707455 DOI: 10.3390/ijms222413391] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2021] [Revised: 12/07/2021] [Accepted: 12/10/2021] [Indexed: 11/16/2022] Open
Abstract
In the present work, a convenient and straightforward approach to the preparation of borylated amidines based on the closo-dodecaborate anion [B12H11NCCH3NHR]-, R=H, Alk, Ar was developed. This method has two stages. A nitrile derivative of the general form [B12H11NCCH3]- was obtained, using a modified technique, in the first stage. On the second stage the resulting molecular system interacted with primary amines to form the target amidine products. This approach is characterised by a simple chemical apparatus, mild conditions and high yields of the final products. The mechanism of the addition of amine to the nitrile derivative of the closo-dodecaborate anion was studied, using quantum-chemical methods. The interaction between NH3 and [B12H11NCCH3]- ammonia was chosen as an example. It was found that the structure of the transition state determines the stereo-selectivity of the process. A study of the biological properties of borylated amidine sodium salts indicated that the substances had low toxicity and could accumulate in cancer cells in significant amounts.
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Affiliation(s)
- Alexey V. Nelyubin
- Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Leninskii pr. 31, 119991 Moscow, Russia; (A.V.N.); (N.A.S.); (A.Y.B.); (I.N.K.); (K.Y.Z.); (N.T.K.)
| | - Nikita A. Selivanov
- Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Leninskii pr. 31, 119991 Moscow, Russia; (A.V.N.); (N.A.S.); (A.Y.B.); (I.N.K.); (K.Y.Z.); (N.T.K.)
| | - Alexander Yu. Bykov
- Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Leninskii pr. 31, 119991 Moscow, Russia; (A.V.N.); (N.A.S.); (A.Y.B.); (I.N.K.); (K.Y.Z.); (N.T.K.)
| | - Ilya N. Klyukin
- Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Leninskii pr. 31, 119991 Moscow, Russia; (A.V.N.); (N.A.S.); (A.Y.B.); (I.N.K.); (K.Y.Z.); (N.T.K.)
| | - Alexander S. Novikov
- Institute of Chemistry, Saint Petersburg State University, Universitetskaya Nab. 7-9, 199034 Saint Petersburg, Russia;
| | - Andrey P. Zhdanov
- Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Leninskii pr. 31, 119991 Moscow, Russia; (A.V.N.); (N.A.S.); (A.Y.B.); (I.N.K.); (K.Y.Z.); (N.T.K.)
- Correspondence: ; Tel.: +7-926-727-0139
| | - Natalia Yu. Karpechenko
- N. N. Blokhin National Medical Research Center of Oncology, 24 Kashirskoye Shosse, 115478 Moscow, Russia;
- Depatment of Medicinal Chemistry and Toxicology, Pirogov Russian National Research Medical University, 117997 Moscow, Russia
| | - Mikhail S. Grigoriev
- Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, Leninskii pr. 31, Bldg 4, 119071 Moscow, Russia;
| | - Konstantin Yu. Zhizhin
- Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Leninskii pr. 31, 119991 Moscow, Russia; (A.V.N.); (N.A.S.); (A.Y.B.); (I.N.K.); (K.Y.Z.); (N.T.K.)
| | - Nikolay T. Kuznetsov
- Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Leninskii pr. 31, 119991 Moscow, Russia; (A.V.N.); (N.A.S.); (A.Y.B.); (I.N.K.); (K.Y.Z.); (N.T.K.)
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37
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Kravchenko E, Gippius A, Zhurenko S, Tkachev A, Semenova V, Golubev A, Kubasov A, Bykov A, Buzanov G, Zhizhin K, Kuznetsov N. Noncovalent interactions in perchlorinated sulfonium and ammonium derivatives of closo-decaborate anion: 35Cl NQR and crystal structure. Polyhedron 2021. [DOI: 10.1016/j.poly.2021.115514] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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38
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Tahaoğlu D, Alkan F, Durandurdu M. Theoretical investigation of substituent effects on the relative stabilities and electronic structure of [B nX n] 2- clusters. J Mol Model 2021; 27:365. [PMID: 34845522 DOI: 10.1007/s00894-021-04980-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2021] [Accepted: 11/08/2021] [Indexed: 10/19/2022]
Abstract
In this study, we provide a theoretical evaluation of relative stabilities and electronic structure for [BnXn]2- clusters (n = 10, 12, 13, 14, 15, 16). Structural and electronic characteristics of [BnXn]2- clusters are examined by comparison with the [B12X12]2- counterparts with a focus on the substituent effects (X = H, F, Cl, Br, CN, BO, OH, NH2) on the electronic structure, electron detachment energies, formation enthalpies, and charge distributions. For the electronic structure and electron detachment energies, substituent effects on boron clusters are shown to follow a very similar trend to the mesomeric and inductive effects (± M and ± I) of π-conjugated systems, and the most stable derivatives in terms of HOMO/LUMO and electron detachment energies are calculated for CN and BO substituents due to strong -M effects. In the case of formation enthalpies for larger boron clusters (n ≥ 13), the icosahedral barrier is shown to increase with the halogen and CN substitution, whereas it is possible to reduce the icosahedral barrier for the cases of X = OH and NH2. It is shown that this reduction results from destabilizing the [B12X12]2- cluster with electronic (+ M) and symmetry effects induced by OH and NH2 ligands.
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Affiliation(s)
- Duygu Tahaoğlu
- Department of Nanotechnology Engineering, Abdullah Gül University, Kayseri, Turkey
| | - Fahri Alkan
- Department of Nanotechnology Engineering, Abdullah Gül University, Kayseri, Turkey.
| | - Murat Durandurdu
- Department of Nanotechnology Engineering, Abdullah Gül University, Kayseri, Turkey
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Golub IE, Filippov OA, Belkova NV, Epstein LM, Shubina ES. The Mechanism of Halogenation of Decahydro-closo-Decaborate Dianion by Hydrogen Chloride. RUSS J INORG CHEM+ 2021. [DOI: 10.1134/s0036023621110073] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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40
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Eleazer BJ, Jayaweera HDAC, Gange GB, Smith MD, Martin CR, Park KC, Popov AA, Peryshkov DV. Bimetallic Ru-Pd and Trimetallic Ru-Pd-Cu Assemblies on the Carborane Cluster Surface. Inorg Chem 2021; 60:16911-16916. [PMID: 34710327 DOI: 10.1021/acs.inorgchem.1c02799] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The synthesis of well-defined heterometallic complexes remains a frontier challenge in inorganic chemistry. We report an approach that relies on the sequential insertion of electrophilic metal fragments into electron-rich Ru-B bonds of the η2-BB-carboryne complex (POBBOP)Ru(CO)2 [POBBOP = 1,7-OP(iPr)2-m-2,6-dehydrocarborane]. Utilizing this synthetic strategy, bimetallic (POBBOP)(Ru)(CO)2[Pd(PtBu3)] and trimetallic (POBBOP)(Ru)(CO)2[Pd(PtBu3)](CuBr) complexes were selectively prepared. Structural and theoretical analysis of the features of chemical bonding within Ru-B-B-Cu and Ru-B-B-Pd fragments is presented.
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Affiliation(s)
- Bennett J Eleazer
- Department of Chemistry and Biochemistry, University of South Carolina, 631 Sumter Street, Columbia, South Carolina 29208, United States
| | - H D A Chathumal Jayaweera
- Department of Chemistry and Biochemistry, University of South Carolina, 631 Sumter Street, Columbia, South Carolina 29208, United States
| | - Gayathri B Gange
- Department of Chemistry and Biochemistry, University of South Carolina, 631 Sumter Street, Columbia, South Carolina 29208, United States
| | - Mark D Smith
- Department of Chemistry and Biochemistry, University of South Carolina, 631 Sumter Street, Columbia, South Carolina 29208, United States
| | - Corey R Martin
- Department of Chemistry and Biochemistry, University of South Carolina, 631 Sumter Street, Columbia, South Carolina 29208, United States
| | - Kyoung Chul Park
- Department of Chemistry and Biochemistry, University of South Carolina, 631 Sumter Street, Columbia, South Carolina 29208, United States
| | - Alexey A Popov
- Leibniz Institute for Solid State and Materials Research, Helmholtzstrasse 20, 01069 Dresden, Germany
| | - Dmitry V Peryshkov
- Department of Chemistry and Biochemistry, University of South Carolina, 631 Sumter Street, Columbia, South Carolina 29208, United States
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Buades AB, Viñas C, Fontrodona X, Teixidor F. 1.3 V Inorganic Sequential Redox Chain with an All-Anionic Couple 1-/2- in a Single Framework. Inorg Chem 2021; 60:16168-16177. [PMID: 34693711 PMCID: PMC9180739 DOI: 10.1021/acs.inorgchem.1c01822] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
![]()
The relatively low symmetry of [3,3′-Co(1,2-C2B9H11)2]− ([1]−), along with the high number
of available
substitution sites, 18 on the boron atoms and 4 on the carbon atoms,
allows a fairly regioselective and stepwise chlorination of the platform
and therefore a very controlled tuning of the electrochemical potential
tuning. This is not so easily found in other systems, e.g., ferrocene.
In this work, we show how a single platform with boron and carbon
in the ligand, and only cobalt can produce a tuning of potentials
in a stepwise manner in the 1.3 V range. The platform used is made
of two icosahedra sharing one vertex. The E1/2 tuning has been achieved from [1]− by sequential chlorination, which has given potentials whose values
increase sequentially and linearly with the number of chloro groups
in the platform. [Cl8-1]−, [Cl10-1]−, and [Cl12-1]− have been obtained, which
are added to the existing [Cl-1]−,
[Cl2-1]−, [Cl4-1]−, and [Cl6-1]− described earlier to give the 1.3 V range. It is envisaged
to extend this range also sequentially by changing the metal from
cobalt to iron. The last successful synthesis of the highest chlorinated
derivatives of cobaltabis(dicarbollide) dates back to 1982, and since
then, no more advances have occurred toward more substituted metallacarborane
chlorinated compounds. [Cl8-1]−, [Cl10-1]−, and [Cl12-1]− are made
with an easy and fast method. The key point of the reaction is the
use of the protonated form of [Co(C2B9H11)2]−, as a starting material,
and the use of sulfuryl chloride, a less hazardous and easier to use
chlorinating agent. In addition, we present a complete, spectroscopic,
crystallographic, and electrochemical characterization, together with
a study of the influence of the chlorination position in the electrochemical
properties. By sequential halogenation of [Co(C2B9H11)2]− ([1]−) with chlorine, the [Cl8-1]−, [Cl10-1]−, and [Cl12-1]− derivatives
of [1]− have been prepared and isolated.
The E1/2 values increase sequentially
and linearly with the number of chloro groups in the platform. If
these potentials are added to the existing E1/2 values due to [Cl-1]−, [Cl2-1]−, [Cl4-1]−, and [Cl6-1]− described earlier, a 1.3 V range is obtained. This
allows tuning of the desired potentials for the purposes of nature.
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Affiliation(s)
- Ana B Buades
- Institut de Ciència de Materials de Barcelona, Consejo Superior de Investigaciones Científicas, Campus Universitat Autonòma de Barcelona (UAB), 08193 Bellaterra, Spain
| | - Clara Viñas
- Institut de Ciència de Materials de Barcelona, Consejo Superior de Investigaciones Científicas, Campus Universitat Autonòma de Barcelona (UAB), 08193 Bellaterra, Spain
| | - Xavier Fontrodona
- Departamento de Química and Serveis Tècnics de Recerca, Universitat de Girona, Campus de Montilivi, 17071 Girona, Spain
| | - Francesc Teixidor
- Institut de Ciència de Materials de Barcelona, Consejo Superior de Investigaciones Científicas, Campus Universitat Autonòma de Barcelona (UAB), 08193 Bellaterra, Spain
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43
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Sabra MK, Maksoud F. Cis boron hydrogen chains: Theoretical calculations. Chem Phys Lett 2021. [DOI: 10.1016/j.cplett.2021.138950] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Koldemir-Gündüz M, Aydin HE, Berikten D, Kaymak G, Köse DA, Arslantaş A. Synthesis of New Boron Derived Compounds; Anticancer, Antioxidant and Antimicrobial Effect in Vitro Glioblastoma Tumor Model. J Korean Neurosurg Soc 2021; 64:864-872. [PMID: 34571588 PMCID: PMC8590914 DOI: 10.3340/jkns.2021.0032] [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: 02/03/2021] [Accepted: 03/26/2021] [Indexed: 11/27/2022] Open
Abstract
Objective The aim of our study is to investigate the cytotoxic, antioxidant, and antimicrobial effects of newly synthesized boron compounds in U87MG glioblastoma cell treatment.
Methods We synthesized boron glycine monoester (BGM) and boron glycine diester (BGD) structures containing boron atoms and determined their cytotoxic activities on glioblastoma by the MTT method. The inhibitory concentration 50 (IC50) value was calculated with GraphPad Prism 5.0 program. The IC50 values were administered 48 hours on U87MG glioblastoma cell. Catalase (CAT), acid phosphatase (ACP) and alkaline phosphatase (ALP) enzyme activity, malondialdehyde (MDA), total glutathione (GSH), and total protein levels were detected using spectrophotometric methods. We determined the antimicrobial activities of BGM and BGD with the disc diffusion method. Results After 48 hours of BGM and BGD application to U87MG glioblastoma cells, we found the IC50 value as 6.6 mM and 26 mM, respectively. CAT and ACP enzyme activities were decreased in BGM and BGD groups. MDA which is a metabolite of lipid peroxidation was increased in both boron compounds groups. GSH level was reduced especially in BGD group. BGM and BGD have been found to be antimicrobial effects.
Conclusion Boron compounds, especially the BGM, can provide a new therapeutic approach for the treatment of glioblastoma with their anticancer, antioxidant, and antimicrobial effects.
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Affiliation(s)
| | - Hasan Emre Aydin
- Department of Neurosurgery, Kutahya Health Sciences University, Kütahya, Turkey
| | - Derya Berikten
- Training and Research Center, Kutahya Health Sciences University, Kütahya, Turkey
| | - Güllü Kaymak
- Training and Research Center, Kutahya Health Sciences University, Kütahya, Turkey
| | | | - Ali Arslantaş
- Department of Neurosurgery, Eskişehir Osmangazi University, Eskisehir, Turkey
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Kubasov AS, Turyshev ES, Novikov IV, Gurova OM, Starodubets PA, Golubev AV, Zhizhin KY, Kuznetsov NT. Theoretical and experimental comparison of the reactivity of the sulfanyl-closo-decaborate and sulfanyl-closo-dodecaborate anions and their mono-S-substituted derivatives. Polyhedron 2021. [DOI: 10.1016/j.poly.2021.115347] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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46
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Shakerzadeh E. Endohedral M@B
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(M = Na and Ca) metalloborospherenes as innovative potential carriers for chemotherapy melphalan drug: A theoretical study. Appl Organomet Chem 2021. [DOI: 10.1002/aoc.6411] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Ehsan Shakerzadeh
- Chemistry Department, Faculty of Science Shahid Chamran University of Ahvaz Ahvaz Iran
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47
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Gange GB, Humphries AL, Royzman DE, Smith MD, Peryshkov DV. Metal-Free Bond Activation by Carboranyl Diphosphines. J Am Chem Soc 2021; 143:10842-10846. [PMID: 34254787 DOI: 10.1021/jacs.1c05387] [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
We report metal-free bond activation by the carboranyl diphosphine 1-PtBu2-2-PiPr2-C2B10H10. This main group element system contains basic binding sites and possesses the ability to cycle through two-electron redox states. The reported reactions with selected main group hydrides and alcohols occur via the formal oxidation of the phosphine groups and concomitant reduction of the boron cage. These transformations, which are driven by the cooperation between the electron-donating exohedral substituents and the electron-accepting cluster, differ from those of "regular" phosphines and are reminiscent of oxidative addition to transition metal centers, thus representing a new approach to metal-free bond activation.
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Affiliation(s)
- Gayathri B Gange
- Department of Chemistry and Biochemistry, University of South Carolina, 631 Sumter Street, Columbia, South Carolina 29208, United States
| | - Amanda L Humphries
- Department of Chemistry and Biochemistry, University of South Carolina, 631 Sumter Street, Columbia, South Carolina 29208, United States
| | - Dmitry E Royzman
- Department of Chemistry and Biochemistry, University of South Carolina, 631 Sumter Street, Columbia, South Carolina 29208, United States
| | - Mark D Smith
- Department of Chemistry and Biochemistry, University of South Carolina, 631 Sumter Street, Columbia, South Carolina 29208, United States
| | - Dmitry V Peryshkov
- Department of Chemistry and Biochemistry, University of South Carolina, 631 Sumter Street, Columbia, South Carolina 29208, United States
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48
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Li B, Zhang X, Stauber JM, Miller TF, Spokoyny AM. Electronic Structure of Superoxidized Radical Cationic Dodecaborate-Based Clusters. J Phys Chem A 2021; 125:6141-6150. [PMID: 34240867 DOI: 10.1021/acs.jpca.1c03927] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The expanding field of boron clusters has attracted continuous theoretical efforts to understand their diverse structures and unique bonding. We recently discovered a new reversible redox event of B12(O-3-methylbutyl)12 in which the superoxidized radical cationic form [B12(O-3-methylbutyl)12]•+ was identified and isolated for the first time. Herein, comprehensive (TD-)DFT studies in tandem with electrochemical experiments were employed to demonstrate the generality of the reported behavior across perfunctionalized B12(OR)12 clusters (R = aryl or alkyl). While the spin density of radical cationic clusters is delocalized in the core region, the oxidation brings about notable gains of positive partial charges on the supporting groups whose electronics can readily tune the redox potential of the 0/•+ couple. The underlying changes of frontier orbitals were elucidated, and the resulting [B12(OR)12]•+ species manifest a general diagnostic absorption as a consequence of mixed local/charge-transfer excitations.
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Affiliation(s)
- Bo Li
- Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California 91125, United States
| | - Xinglong Zhang
- Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California 91125, United States
| | - Julia M Stauber
- Department of Chemistry and Biochemistry, University of California, Los Angeles, Los Angeles, California 90095, United States
| | - Thomas F Miller
- Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California 91125, United States
| | - Alexander M Spokoyny
- Department of Chemistry and Biochemistry, University of California, Los Angeles, Los Angeles, California 90095, United States
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49
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Wang L, Sun W, Duttwyler S, Zhang Y. Efficient adsorption separation of methane from CO2 and C2–C3 hydrocarbons in a microporous closo-dodecaborate [B12H12]2- pillared metal–organic framework. J SOLID STATE CHEM 2021. [DOI: 10.1016/j.jssc.2021.122167] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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50
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Buelna-García CE, Robles-Chaparro E, Parra-Arellano T, Quiroz-Castillo JM, del-Castillo-Castro T, Martínez-Guajardo G, Castillo-Quevedo C, de-León-Flores A, Anzueto-Sánchez G, Martin-del-Campo-Solis MF, Mendoza-Wilson AM, Vásquez-Espinal A, Cabellos JL. Theoretical Prediction of Structures, Vibrational Circular Dichroism, and Infrared Spectra of Chiral Be 4B 8 Cluster at Different Temperatures. Molecules 2021; 26:3953. [PMID: 34203563 PMCID: PMC8271876 DOI: 10.3390/molecules26133953] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2021] [Revised: 06/18/2021] [Accepted: 06/22/2021] [Indexed: 11/16/2022] Open
Abstract
Lowest-energy structures, the distribution of isomers, and their molecular properties depend significantly on geometry and temperature. Total energy computations using DFT methodology are typically carried out at a temperature of zero K; thereby, entropic contributions to the total energy are neglected, even though functional materials work at finite temperatures. In the present study, the probability of the occurrence of one particular Be4B8 isomer at temperature T is estimated by employing Gibbs free energy computed within the framework of quantum statistical mechanics and nanothermodynamics. To identify a list of all possible low-energy chiral and achiral structures, an exhaustive and efficient exploration of the potential/free energy surfaces is carried out using a multi-level multistep global genetic algorithm search coupled with DFT. In addition, we discuss the energetic ordering of structures computed at the DFT level against single-point energy calculations at the CCSD(T) level of theory. The total VCD/IR spectra as a function of temperature are computed using each isomer's probability of occurrence in a Boltzmann-weighted superposition of each isomer's spectrum. Additionally, we present chemical bonding analysis using the adaptive natural density partitioning method in the chiral putative global minimum. The transition state structures and the enantiomer-enantiomer and enantiomer-achiral activation energies as a function of temperature evidence that a change from an endergonic to an exergonic type of reaction occurs at a temperature of 739 K.
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Affiliation(s)
- Carlos Emiliano Buelna-García
- Departamento de Investigación en Polímeros y Materiales, Edificio 3G, Universidad de Sonora, Hermosillo 83000, Sonora, Mexico; (C.E.B.-G.); (J.M.Q.-C.); (T.d.-C.-C.)
- Organización Científica y Tecnológica del Desierto, Hermosillo 83150, Sonora, Mexico
| | - Eduardo Robles-Chaparro
- Departamento de Ciencias Químico Biologicas, Edificio 5A, Universidad de Sonora, Hermosillo 83000, Sonora, Mexico; (E.R.-C.); (T.P.-A.); (A.d.-L.-F.)
| | - Tristan Parra-Arellano
- Departamento de Ciencias Químico Biologicas, Edificio 5A, Universidad de Sonora, Hermosillo 83000, Sonora, Mexico; (E.R.-C.); (T.P.-A.); (A.d.-L.-F.)
| | - Jesus Manuel Quiroz-Castillo
- Departamento de Investigación en Polímeros y Materiales, Edificio 3G, Universidad de Sonora, Hermosillo 83000, Sonora, Mexico; (C.E.B.-G.); (J.M.Q.-C.); (T.d.-C.-C.)
| | - Teresa del-Castillo-Castro
- Departamento de Investigación en Polímeros y Materiales, Edificio 3G, Universidad de Sonora, Hermosillo 83000, Sonora, Mexico; (C.E.B.-G.); (J.M.Q.-C.); (T.d.-C.-C.)
| | - Gerardo Martínez-Guajardo
- Unidad Académica de Ciencias Químicas, Área de Ciencias de la Salud, Universidad Autónomade Zacatecas, Km. 6 Carretera Zacatecas-Guadalajara s/n, Ejido La Escondida C.P., Zacatecas 98160, Zac, Mexico;
| | - Cesar Castillo-Quevedo
- Departamento de Fundamentos del Conocimiento, Centro Universitario del Norte, Universidad de Guadalajara, Carretera Federal No. 23, Km. 191, C.P., Colotlán 46200, Jalisco, Mexico; (C.C.-Q.); (M.F.M.-d.-C.-S.)
| | - Aned de-León-Flores
- Departamento de Ciencias Químico Biologicas, Edificio 5A, Universidad de Sonora, Hermosillo 83000, Sonora, Mexico; (E.R.-C.); (T.P.-A.); (A.d.-L.-F.)
| | | | - Martha Fabiola Martin-del-Campo-Solis
- Departamento de Fundamentos del Conocimiento, Centro Universitario del Norte, Universidad de Guadalajara, Carretera Federal No. 23, Km. 191, C.P., Colotlán 46200, Jalisco, Mexico; (C.C.-Q.); (M.F.M.-d.-C.-S.)
| | - Ana Maria Mendoza-Wilson
- Coordinación de Tecnología de Alimentos de Origen Vegetal, CIAD, A.C., Carretera Gustavo Enrique Astiazarán Rosas, No. 46, Hermosillo 83304, Sonora, Mexico;
| | - Alejandro Vásquez-Espinal
- Computational and Theoretical Chemistry Group Departamento de Ciencias Químicas, Facultad de Ciencias Exactas, Universidad Andres Bello, Republica 498, Santiago 8370035, Chile;
| | - Jose Luis Cabellos
- Departamento de Investigación en Física, Edificio 3M, Universidad de Sonora, Hermosillo 83000, Sonora, Mexico
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