1
|
Sudittapong B, Taylor CGP, Williams J, Griffiths RJ, Hiscock JR, Ward MD. Coordination-cage binding and catalysed hydrolysis of organophosphorus chemical warfare agent simulants. RSC Adv 2024; 14:26032-26042. [PMID: 39161455 PMCID: PMC11331485 DOI: 10.1039/d4ra04705b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2024] [Accepted: 08/13/2024] [Indexed: 08/21/2024] Open
Abstract
The use of organophosphorus chemical warfare agents still remains an ongoing global threat. Here we investigate the binding of small-molecule organic guests including phosphate esters, sulfonate esters, carbonate esters and a sulfite ester - some of which act as simulants for organophosphorus chemical warfare agents - in the cavity of a water-soluble coordination cage. For several of these guest species, binding constants in the range 102 to 103 M-1 were determined in water/DMSO (98 : 2 v/v) solution, through a combination of fluorescence and 1H NMR spectroscopy, and subsequent fitting of titration data to a 1 : 1 binding isotherm model. For three cage/guest complexes crystallographic structure determinations were possible: in two cases (with guests phenyl methanesulfonate and phenyl propyl carbonate) the guest lies inside the cavity, forming a range of CH⋯O hydrogen-bonding interactions with the cage interior surface involving CH groups on the cationic cage surface that act as H-bond donors and O atoms on the guests that act as H-bond acceptors. In a third case, with the guest 4-nitrophenyl-methanesulfonate, the guest lies in the spaces outside a cage cavity between cages and forms weak CH⋯O interactions with the cage exterior surface: the cavity is occupied by a network of H-bonded water molecules, though this guest does show cavity binding in solution. For the isomeric guests 4-nitrophenyl-methanesulfonate and 4-nitrophenyl methyl sulfite, hydrolysis in water/DMSO (98 : 2 v/v) could be monitored colorimetrically via appearance of the 4-nitrophenolate anion; both showed accelerated hydrolysis rates in the presence of the host cage with second-order rate constants for the catalysed reactions in the range 10-3 to 10-2 M-1 s-1 at pH 9. The typical rate dependence on external pH and the increased reaction rates when chloride ions are present (which can bind inside the cavity and displace other cavity-bound guests) imply that the catalysed reaction actually occurs at the external surface of the cage rather than inside the cavity.
Collapse
Affiliation(s)
| | | | - James Williams
- Department of Chemistry, University of Warwick Coventry CV4 7AL UK
| | - Rebecca J Griffiths
- School of Chemistry and Forensic Science, University of Kent Canterbury CT2 7NH UK
| | - Jennifer R Hiscock
- School of Chemistry and Forensic Science, University of Kent Canterbury CT2 7NH UK
| | - Michael D Ward
- Department of Chemistry, University of Warwick Coventry CV4 7AL UK
| |
Collapse
|
2
|
Li TR, Das C, Cornu I, Prescimone A, Piccini G, Tiefenbacher K. Window[1]resorcin[3]arenes: A Novel Macrocycle Able to Self-Assemble to a Catalytically Active Hexameric Cage. JACS AU 2024; 4:1901-1910. [PMID: 38818056 PMCID: PMC11134363 DOI: 10.1021/jacsau.4c00097] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/31/2024] [Revised: 04/16/2024] [Accepted: 04/16/2024] [Indexed: 06/01/2024]
Abstract
The hexameric resorcin[4]arene capsule has been utilized as one of the most versatile supramolecular capsule catalysts. Enlarging its size would enable expansion of the substrate size scope. However, no larger catalytically active versions have been reported. Herein, we introduce a novel class of macrocycles, named window[1]resorcin[3]arene (wRS), that assemble to a cage-like hexameric host. The new host was studied by NMR, encapsulation experiments, and molecular dynamics simulations. The cage is able to bind tetraalkylammonium ions that are too large for encapsulation inside the hexameric resorcin[4]arene capsule. Most importantly, it retained its catalytic activity, and the accelerated conversion of a large substrate that does not fit the closed hexameric resorcin[4]arene capsule was observed. Thus, it will help to expand the limited substrate size scope of the closed hexameric resorcin[4]arene capsule.
Collapse
Affiliation(s)
- Tian-Ren Li
- Department
of Chemistry, University of Basel, Mattenstrasse 24a, 4058 Basel, Switzerland
| | - Chintu Das
- Institute
of Technical and Macromolecular Chemistry RWTH Aachen University, Worringerweg 2, 52074 Aachen, Germany
| | - Ivan Cornu
- Department
of Chemistry, University of Basel, Mattenstrasse 24a, 4058 Basel, Switzerland
| | - Alessandro Prescimone
- Department
of Chemistry, University of Basel, Mattenstrasse 24a, 4058 Basel, Switzerland
| | - GiovanniMaria Piccini
- Institute
of Technical and Macromolecular Chemistry RWTH Aachen University, Worringerweg 2, 52074 Aachen, Germany
| | - Konrad Tiefenbacher
- Department
of Chemistry, University of Basel, Mattenstrasse 24a, 4058 Basel, Switzerland
- Department
of Biosystems Science and Engineering, ETH
Zurich, Mattenstrasse
26, 4058 Basel, Switzerland
| |
Collapse
|
3
|
Zhang W, Bazan-Bergamino EA, Doan AP, Zhang X, Isaacs L. Pillar[6]MaxQ functions as an in vivo sequestrant for rocuronium and vecuronium. Chem Commun (Camb) 2024; 60:4350-4353. [PMID: 38546190 DOI: 10.1039/d4cc00772g] [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: 04/17/2024]
Abstract
The binding affinity of pillar[6]MaxQ toward a panel of neuromuscular blockers and neurotransmitters was measured in phosphate buffered saline by isothermal titration calorimetry and 1H NMR spectroscopy. In vivo efficacy studies showed that P6MQ sequesters rocuronium and vecuronium and reverses their influence on the recovery of the train-of-four (TOF) ratio.
Collapse
Affiliation(s)
- Wanping Zhang
- College of Pharmacy, Chongqing Medical University, Chongqing 400016, P. R. China.
| | | | - Anton P Doan
- Department of Chemistry and Biochemistry, University of Maryland, College Park, Maryland 20742, USA.
| | - Xiangjun Zhang
- College of Pharmacy, Chongqing Medical University, Chongqing 400016, P. R. China.
| | - Lyle Isaacs
- Department of Chemistry and Biochemistry, University of Maryland, College Park, Maryland 20742, USA.
| |
Collapse
|
4
|
Pavlović RZ, Finnegan TJ, Metlushko A, Hansen AL, Waudby CA, Wang X, Hoefer N, McComb DW, Pavić A, Plackić N, Novaković J, Bradić J, Jeremić N, Jakovljević V, Šmit B, Matić S, Alvarez-Saavedra MA, Čapo I, Moore CE, Stupp SI, Badjić JD. Dynamic and Assembly Characteristics of Deep-Cavity Basket Acting as a Host for Inclusion Complexation of Mitoxantrone in Biotic and Abiotic Systems. Chemistry 2023; 29:e202303374. [PMID: 37851342 DOI: 10.1002/chem.202303374] [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: 10/13/2023] [Revised: 10/16/2023] [Accepted: 10/18/2023] [Indexed: 10/19/2023]
Abstract
We describe the preparation, dynamic, assembly characteristics of vase-shaped basket 13- along with its ability to form an inclusion complex with anticancer drug mitoxantrone in abiotic and biotic systems. This novel cavitand has a deep nonpolar pocket consisting of three naphthalimide sides fused to a bicyclic platform at the bottom while carrying polar glycines at the top. The results of 1 H Nuclear Magnetic Resonance (NMR), 1 H NMR Chemical Exchange Saturation Transfer (CEST), Calorimetry, Hybrid Replica Exchange Molecular Dynamics (REMD), and Microcrystal Electron Diffraction (MicroED) measurements are in line with 1 forming dimer [12 ]6- , to be in equilibrium with monomers 1(R) 3- (relaxed) and 1(S) 3- (squeezed). Through simultaneous line-shape analysis of 1 H NMR data, kinetic and thermodynamic parameters characterizing these equilibria were quantified. Basket 1(R) 3- includes anticancer drug mitoxantrone (MTO2+ ) in its pocket to give stable binary complex [MTO⊂1]- (Kd =2.1 μM) that can be precipitated in vitro with UV light or pH as stimuli. Both in vitro and in vivo studies showed that the basket is nontoxic, while at a higher proportion with respect to MTO it reduced its cytotoxicity in vitro. With well-characterized internal dynamics and dimerization, the ability to include mitoxantrone, and biocompatibility, the stage is set to develop sequestering agents from deep-cavity baskets.
Collapse
Affiliation(s)
- Radoslav Z Pavlović
- Department of Chemistry & Biochemistry, The Ohio State University, 1100 W. 18th Avenue, Columbus, OH, 43210, USA
- Department of Chemistry, Northwestern University, Evanston, IL, 60208, USA
- Simpson Querrey Institute for BioNanotechnology, Northwestern University, Chicago, IL, 60611, USA
- Department of Medicine, Northwestern University, Chicago, IL, 60611, USA
- Department of Materials Science and Engineering, Northwestern University, Chicago, IL, 60208, USA
- Department of Biomedical Engineering, Northwestern University, Chicago, IL, 60208, USA)
| | - Tyler J Finnegan
- Department of Chemistry & Biochemistry, The Ohio State University, 1100 W. 18th Avenue, Columbus, OH, 43210, USA
| | - Anna Metlushko
- Department of Chemistry, Northwestern University, Evanston, IL, 60208, USA
- Simpson Querrey Institute for BioNanotechnology, Northwestern University, Chicago, IL, 60611, USA
- Department of Medicine, Northwestern University, Chicago, IL, 60611, USA
- Department of Materials Science and Engineering, Northwestern University, Chicago, IL, 60208, USA
- Department of Biomedical Engineering, Northwestern University, Chicago, IL, 60208, USA)
| | - Alexandar L Hansen
- Campus Chemical Instrument Center, The Ohio State University, Columbus, OH, 43210, USA
| | | | - Xiuze Wang
- Department of Chemistry & Biochemistry, The Ohio State University, 1100 W. 18th Avenue, Columbus, OH, 43210, USA
| | - Nicole Hoefer
- Center for Electron Microscopy and Analysis, The Ohio State University, Columbus, OH, 43210, USA
- Department of Materials Science and Engineering, The Ohio State University, Columbus, OH, 43210, USA
| | - David W McComb
- Center for Electron Microscopy and Analysis, The Ohio State University, Columbus, OH, 43210, USA
- Department of Materials Science and Engineering, The Ohio State University, Columbus, OH, 43210, USA
| | - Aleksandar Pavić
- Institute of Molecular Genetics and Genetic Engineering, University of Belgrade, 11000, Belgrade, Serbia
| | - Nikola Plackić
- Institute of Molecular Genetics and Genetic Engineering, University of Belgrade, 11000, Belgrade, Serbia
| | - Jovana Novaković
- Department of Pharmacy, Faculty of Medical Sciences, University of Kragujevac, Kragujevac, Serbia
- Center for Excellence for Redox Balance Research in Cardiovascular and Metabolic Disorders, Kragujevac, Serbia
| | - Jovana Bradić
- Department of Pharmacy, Faculty of Medical Sciences, University of Kragujevac, Kragujevac, Serbia
- Center for Excellence for Redox Balance Research in Cardiovascular and Metabolic Disorders, Kragujevac, Serbia
| | - Nevena Jeremić
- Department of Pharmacy, Faculty of Medical Sciences, University of Kragujevac, Kragujevac, Serbia
- Center for Excellence for Redox Balance Research in Cardiovascular and Metabolic Disorders, Kragujevac, Serbia
| | - Vladimir Jakovljević
- Department of Pharmacy, Faculty of Medical Sciences, University of Kragujevac, Kragujevac, Serbia
- Center for Excellence for Redox Balance Research in Cardiovascular and Metabolic Disorders, Kragujevac, Serbia
| | - Biljana Šmit
- University of Kragujevac, Institute for Information Technologies, Department of Science, Kragujevac, Serbia)
| | - Sanja Matić
- University of Kragujevac, Institute for Information Technologies, Department of Science, Kragujevac, Serbia)
| | - Matias A Alvarez-Saavedra
- Department of Chemistry, Northwestern University, Evanston, IL, 60208, USA
- Simpson Querrey Institute for BioNanotechnology, Northwestern University, Chicago, IL, 60611, USA
- Department of Medicine, Northwestern University, Chicago, IL, 60611, USA
- Department of Materials Science and Engineering, Northwestern University, Chicago, IL, 60208, USA
- Department of Biomedical Engineering, Northwestern University, Chicago, IL, 60208, USA)
| | - Ivan Čapo
- Department of Histology and Embryology, Medical Faculty of Novi Sad, Novi Sad, Serbia
| | - Curtis E Moore
- Department of Chemistry & Biochemistry, The Ohio State University, 1100 W. 18th Avenue, Columbus, OH, 43210, USA
| | - Samuel I Stupp
- Department of Chemistry, Northwestern University, Evanston, IL, 60208, USA
- Simpson Querrey Institute for BioNanotechnology, Northwestern University, Chicago, IL, 60611, USA
- Department of Medicine, Northwestern University, Chicago, IL, 60611, USA
- Department of Materials Science and Engineering, Northwestern University, Chicago, IL, 60208, USA
- Department of Biomedical Engineering, Northwestern University, Chicago, IL, 60208, USA)
| | - Jovica D Badjić
- Department of Chemistry & Biochemistry, The Ohio State University, 1100 W. 18th Avenue, Columbus, OH, 43210, USA
| |
Collapse
|
5
|
Liyana Gunawardana VW, Ward C, Wang H, Holbrook JH, Sekera ER, Cui H, Hummon AB, Badjić JD. Crystalline Nanoparticles of Water-Soluble Covalent Basket Cages (CBCs) for Encapsulation of Anticancer Drugs. Angew Chem Int Ed Engl 2023; 62:e202306722. [PMID: 37332078 PMCID: PMC10528532 DOI: 10.1002/anie.202306722] [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: 05/12/2023] [Revised: 06/06/2023] [Accepted: 06/16/2023] [Indexed: 06/20/2023]
Abstract
We herein describe the preparation, assembly, recognition characteristics, and biocompatibility of novel covalent basket cage CBC-11, composed of four molecular baskets linked to four trivalent aromatic amines through amide groups. The cage is tetrahedral in shape and similar in size to small proteins (Mw =8637 g/mol) with a spacious nonpolar interior for accommodating multiple guests. While 24 carboxylates at the outer surface of CBC-11 render it soluble in aqueous phosphate buffer (PBS) at pH=7.0, the amphiphilic nature prompts its assembly into nanoparticles (d=250 nm, DLS). Cryo-TEM examination of nanoparticles revealed their crystalline nature with wafer-like shapes and hexagonally arranged cages. Nanoparticulate CBC-11 traps anticancer drugs irinotecan and doxorubicin, with each cage binding up to four drug molecules in a non-cooperative manner. The inclusion complexation resulted in nanoparticles growing in size and precipitating. In media containing mammalian cells (HCT 116, human colon carcinoma), the IC50 value of CBC-11 was above 100 μM. While this work presents the first example of a large covalent organic cage operating in water at the physiological pH and forming crystalline nanoparticles, it also demonstrates its biocompatibility and potential to act as a polyvalent binder of drugs for their sequestration or delivery.
Collapse
Affiliation(s)
| | - Carson Ward
- Department of Chemistry and Biochemistry, The Ohio State University, 100 West 18th Avenue, Columbus, OH 43210, USA
| | - Han Wang
- Department of Chemical and Biomolecular Engineering, The Johns Hopkins University, Maryland Hall 221, 3400 North Charles Street, Baltimore, MD, USA
| | - Joseph H Holbrook
- Department of Chemistry and Biochemistry, The Ohio State University, 100 West 18th Avenue, Columbus, OH 43210, USA
| | - Emily R Sekera
- Department of Chemistry and Biochemistry, The Ohio State University, 100 West 18th Avenue, Columbus, OH 43210, USA
| | - Honggang Cui
- Department of Chemical and Biomolecular Engineering, The Johns Hopkins University, Maryland Hall 221, 3400 North Charles Street, Baltimore, MD, USA
| | - Amanda B Hummon
- Department of Chemistry and Biochemistry, The Ohio State University, 100 West 18th Avenue, Columbus, OH 43210, USA
| | - Jovica D Badjić
- Department of Chemistry and Biochemistry, The Ohio State University, 100 West 18th Avenue, Columbus, OH 43210, USA
| |
Collapse
|
6
|
Hu X, Ke Y, Ye H, Zhu B, Rodrigues J, Sheng R. Toward public security monitoring: A perspective of optical molecular probes for phosgene and mustard gas detection. DYES AND PIGMENTS 2023; 216:111379. [DOI: https:/doi.org/10.1016/j.dyepig.2023.111379] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
|
7
|
Desai V, Dey S, Panjwani F, Koley Seth B, Modi K, Vora M, Kumar Jain V. Functionalized oxacalix[4]arene based fluorescent probes for the detection of organophosphorus nerve agent simulants. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2023; 300:122936. [PMID: 37269661 DOI: 10.1016/j.saa.2023.122936] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/18/2023] [Revised: 05/26/2023] [Accepted: 05/27/2023] [Indexed: 06/05/2023]
Abstract
Despite the largely tranquil environment in which humans live, a chemical terrorism attack is still a public safety problem, for which the capacity to quickly and accurately detect chemical warfare agents (CWAs) constitute a significant barrier. In this study, a straightforward fluorescent probe based on dinitrophenylhydrazine has been synthesised. It exhibits great selectivity and sensitivity for the nerve agent mimicking dimethyl chlorophosphate (DMCP) in the MeOH solution. Dinitrophenylhydrazine-oxacalix[4]arene (DPHOC), a 2,4-dinitrophenylhydrazine (2,4-DNPH) derivative, was synthesised and characterized with NMR and ESI-MS. Photophysical behavior, specially spectrofluorometric analysis was introduced to investigate the sensing phenomena of DPHOC toward dimethyl chlorophosphate (DMCP). The LOD of DPHOC toward DMCP was determined to be 2.1 µM, with a linear range from 5 to 50 µM (R2 = 0.99933). Moreover, DPHOC has been proven to be a promising probe toward the real time detection of DMCP.
Collapse
Affiliation(s)
- Vishv Desai
- Department of Chemistry, School of Sciences, Gujarat University, Ahmedabad 380009, Gujarat, India
| | - Shuvankar Dey
- Department of Chemistry, School of Sciences, Gujarat University, Ahmedabad 380009, Gujarat, India
| | - Falak Panjwani
- Department of Chemistry, School of Sciences, Gujarat University, Ahmedabad 380009, Gujarat, India
| | - Banabithi Koley Seth
- Department of Chemistry, School of Sciences, Gujarat University, Ahmedabad 380009, Gujarat, India
| | - Krunal Modi
- Department of Humanities and Science, School of Engineering, Indrashil University, Mehsana 382740, Gujarat, India
| | - Manoj Vora
- Chemical Engineering Department, Institute of Technology Nirma University, Ahmedabad 382481, Gujarat, India
| | - Vinod Kumar Jain
- Department of Chemistry, School of Sciences, Gujarat University, Ahmedabad 380009, Gujarat, India.
| |
Collapse
|
8
|
Wang X, Pavlović RZ, Finnegan TJ, Karmakar P, Moore CE, Badjić JD. Rapid Access to Chiral and Tripodal Cavitands from β-Pinene. Chemistry 2022; 28:e202202416. [PMID: 36168151 PMCID: PMC9797447 DOI: 10.1002/chem.202202416] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2022] [Indexed: 12/31/2022]
Abstract
We report Pd-catalyzed cyclotrimerization of (+)-α-bromoenone, obtained from monoterpene β-pinene, into an enantiopure cyclotrimer. This C3 symmetric compound has three bicyclo[3.1.1]heptane rings fused to its central benzene with each ring carrying a carbonyl group. The cyclotrimer undergoes diastereoselective threefold alkynylation with the lithium salts of five terminal alkynes (41-63 %, de=4-83 %). The addition enabled a rapid synthesis of a small library of novel chiral cavitands that, in shape, resemble a tripod stand. These molecular tripods include a tris-bicycloannelated benzene head attached to three alkyne legs twisted in one direction to form a nonpolar cavity with polar groups as feet. Tripods with methylpyridinium and methylisoquinolinium legs, respectively, form inclusion complexes with anti-inflammatory and chiral drugs (R)/(S)-ibuprofen and (R)/(S)-naproxen. The mode of binding shows drug molecules docked in the cavity of the host through ion-ion, cation-π, and C-H-π contacts that, in addition of desolvation, give rise to complexes having millimolar to micromolar stability in water. Our findings open the door to creating a myriad of enantiopure tripods with tunable functions that, in the future, might give novel chemosensors, catalysts or sequestering agents.
Collapse
Affiliation(s)
- Xiuze Wang
- Department of Chemistry and Biochemistry, The Ohio State University, 100 West 18 Avenue, 43210 Columbus, Ohio (USA)
| | - Radoslav Z. Pavlović
- Department of Chemistry and Biochemistry, The Ohio State University, 100 West 18 Avenue, 43210 Columbus, Ohio (USA)
| | - Tyler J. Finnegan
- Department of Chemistry and Biochemistry, The Ohio State University, 100 West 18 Avenue, 43210 Columbus, Ohio (USA)
| | - Pratik Karmakar
- Department of Chemistry and Biochemistry, The Ohio State University, 100 West 18 Avenue, 43210 Columbus, Ohio (USA),Department of Chemistry, King Mongkut’s University of Technology Thonburi (KMUTT), 126 Pracha Uthit Rd., Bang Mod, Thung Khru, Bangkok 10140 (Thailand)
| | - Curtis E. Moore
- Department of Chemistry and Biochemistry, The Ohio State University, 100 West 18 Avenue, 43210 Columbus, Ohio (USA)
| | - Jovica D. Badjić
- Department of Chemistry and Biochemistry, The Ohio State University, 100 West 18 Avenue, 43210 Columbus, Ohio (USA)
| |
Collapse
|
9
|
Pfeuffer‐Rooschüz J, Heim S, Prescimone A, Tiefenbacher K. Megalo-Cavitands: Synthesis of Acridane[4]arenes and Formation of Large, Deep Cavitands for Selective C70 Uptake. Angew Chem Int Ed Engl 2022; 61:e202209885. [PMID: 35924716 PMCID: PMC9826223 DOI: 10.1002/anie.202209885] [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: 07/06/2022] [Indexed: 01/11/2023]
Abstract
Deep cavitands, concave molecular containers, represent an important supramolecular host class that has been explored for a variety of applications ranging from sensing, switching, purification and adsorption to catalysis. A major limitation in the field has been the cavitand volume that is restricted by the size of the structural platform utilized (diameter approx. 7 Å). We here report the synthesis of a novel, unprecedentedly large structural platform, named acridane[4]arene (diameter approx. 14 Å), suitable for the construction of cavitands with volumes of up to 814 Å3 . These megalo-cavitands serve as size-selective hosts for fullerenes with mM to sub-μM binding affinity for C60 and C70 . Furthermore, the selective binding of fullerene C70 in the presence of C60 was demonstrated.
Collapse
Affiliation(s)
| | - Salome Heim
- Department of ChemistryUniversity of BaselMattenstrasse 24a4002BaselSwitzerland
| | | | - Konrad Tiefenbacher
- Department of ChemistryUniversity of BaselMattenstrasse 24a4002BaselSwitzerland,Department of Biosystems Science and EngineeringETH ZurichMattenstrasse 264058BaselSwitzerland
| |
Collapse
|
10
|
Pfeuffer-Rooschüz J, Heim S, Prescimone A, Tiefenbacher K. Megalo‐Cavitands: Synthesis of Acridane[4]arenes and Formation of Large, Deep Cavitands for Selective C70 Uptake. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202209885] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
| | - Salome Heim
- University of Basel: Universitat Basel Department of Chemistry SWITZERLAND
| | | | | |
Collapse
|
11
|
Zhu B, Sheng R, Chen T, Rodrigues J, Song QH, Hu X, Zeng L. Molecular engineered optical probes for chemical warfare agents and their mimics: Advances, challenges and perspectives. Coord Chem Rev 2022. [DOI: https://doi.org/10.1016/j.ccr.2022.214527] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
|
12
|
Molecular engineered optical probes for chemical warfare agents and their mimics: Advances, challenges and perspectives. Coord Chem Rev 2022. [DOI: 10.1016/j.ccr.2022.214527] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
|
13
|
Badjic JD, Liyana Gunawardana VW, Finnegan TJ, Ward CE, Moore CE. Dissipative Formation of Covalent Basket Cages. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202207418] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Jovica D Badjic
- Ohio State University Department of Chemistry 100 W. 18th Avenue 43210 Columbus UNITED STATES
| | | | | | | | | |
Collapse
|
14
|
Liyana Gunawardana VW, Finnegan TJ, Ward CE, Moore CE, Badjić JD. Dissipative Formation of Covalent Basket Cages. Angew Chem Int Ed Engl 2022; 61:e202207418. [PMID: 35723284 PMCID: PMC9544755 DOI: 10.1002/anie.202207418] [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: 05/20/2022] [Indexed: 11/23/2022]
Abstract
Living systems use chemical fuels to transiently assemble functional structures. As a step toward constructing abiotic mimics of such structures, we herein describe dissipative formation of covalent basket cage CBC 5 by reversible imine condensation of cup‐shaped aldehyde 2 (i.e., basket) with trivalent aromatic amine 4. This nanosized [4+4] cage (V=5 nm3, Mw=6150 Da) has shape of a truncated tetrahedron with four baskets at its vertices and four aromatic amines forming the faces. Importantly, tris‐aldehyde basket 2 and aliphatic tris‐amine 7 undergo condensation to give small [1+1] cage 6. The imine metathesis of 6 and aromatic tris‐amine 4 into CBC 5 was optimized to bias the equilibrium favouring 6. Addition of tribromoacetic acid (TBA) as a chemical fuel perturbs this equilibrium to result in the transient formation of CBC 5, with subsequent consumption of TBA via decarboxylation driving the system back to the starting state.
Collapse
Affiliation(s)
| | - Tyler J Finnegan
- Department of Chemistry & Biochemistry, The Ohio State University, 100 West 18th Avenue, Columbus, OH 43210, USA
| | - Carson E Ward
- Department of Chemistry & Biochemistry, The Ohio State University, 100 West 18th Avenue, Columbus, OH 43210, USA
| | - Curtis E Moore
- Department of Chemistry & Biochemistry, The Ohio State University, 100 West 18th Avenue, Columbus, OH 43210, USA
| | - Jovica D Badjić
- Department of Chemistry & Biochemistry, The Ohio State University, 100 West 18th Avenue, Columbus, OH 43210, USA
| |
Collapse
|
15
|
Fu Y, Fan F, Wang B, Cao Z. Water-Regulated Mechanisms for Degradation of Pesticides Paraoxon and Parathion by Phosphotriesterase: Insight from QM/MM and MD Simulations. Chem Asian J 2022; 17:e202200439. [PMID: 35586954 DOI: 10.1002/asia.202200439] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2022] [Revised: 05/12/2022] [Indexed: 11/06/2022]
Abstract
The enzymatic degradation of pesticides paraoxon (PON) and parathion (PIN) by phosphotriesterase (PTE) has been investigated by QM/MM calculations and MD simulations. In the PTE-PON complex, Zn α and Zn β in the active site are five- and six-coordinated, respectively, while both zinc ions are six coordinated with the Zn α -bound water molecule (WT1) for the PTE-PIN system. The hydrolytic reactions for PON and PIN are respectively driven by the nucleophilic attack of the bridging-OH - and the Zn α -bound water molecule on the phosphorus center of substrate, and the two-step hydrolytic process is predicted to be the rate-limiting step with the energy spans of 13.8 and 14.4 kcal/mol for PON and PIN, respectively. The computational studies reveal that the presence of the Zn α -bound water molecule depends on the structural feature of substrates characterized by P=O and P=S, which determines the hydrolytic mechanism and efficiency for the degradation of organophosphorus pesticides by PTE.
Collapse
Affiliation(s)
- Yuzhuang Fu
- Xiamen University, Department of Chemistry, CHINA
| | - Fangfang Fan
- Zhejiang University of Science and Technology, School of Biological and Chemical Engineering, CHINA
| | - Binju Wang
- Xiamen University, Department of Chemistry, CHINA
| | - Zexing Cao
- Xiamen University, Department of Chemistry, Si Ming Nan Lu, 361005, Xiamen, CHINA
| |
Collapse
|
16
|
Percástegui EG. Metal-organic cages against toxic chemicals and pollutants. Chem Commun (Camb) 2022; 58:5055-5071. [PMID: 35383805 DOI: 10.1039/d2cc00604a] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The continuous release of toxic chemicals and pollutants into the atmosphere and natural waters threatens, directly and indirectly, human health, the sustainability of the planet, and the future of society. Materials capable of capturing or chemically inactivating hazardous substances, which are harmful to humans and the environment, are critical in the modern age. Metal-organic cages (MOCs) show great promise as materials against harmful agents both in solution and in solid state. This Highlight features examples of MOCs that selectively encapsulate, adsorb, or remove from a medium noxious gases, toxic organophosphorus compounds, water pollutant oxoanions, and some emerging organic contaminants. Remarkably, the toxicity of interacting contaminants may be lowered by MOCs as well. Specific cases pertaining to the use of these cages for the chemical degradation of some harmful substances are presented. This Highlight thus aims to provide an overview of the possibilities of MOCs in this area and new methodological insights into their operation for enhancing their activity and the engineering of further remediation applications.
Collapse
Affiliation(s)
- Edmundo G Percástegui
- Universidad Nacional Autónoma de México, Instituto de Química, Ciudad Universitaria, Ciudad de México 04510, Mexico. .,Centro Conjunto de Investigación en Química Sustentable, UAEM-UNAM, Carretera Toluca-Atlacomulco km 14.5, 50200 Toluca, Estado de México, Mexico
| |
Collapse
|