1
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Pahar S, Maayan G. An intramolecular cobalt-peptoid complex as an efficient electrocatalyst for water oxidation at low overpotential. Chem Sci 2024; 15:12928-12938. [PMID: 39148784 PMCID: PMC11323339 DOI: 10.1039/d4sc01182a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2024] [Accepted: 07/05/2024] [Indexed: 08/17/2024] Open
Abstract
Water electrolysis is the simplest way to produce hydrogen, as a clean renewable fuel. However, the high overpotential and slow kinetics hamper its applicability. Designing efficient and stable electrocatalysts for water oxidation (WO), which is the first and limiting step of the water splitting process, can overcome this limitation. However, the development of such catalysts based on non-precious metal ions is still challenging. Herein we describe a bio-inspired Co(iii)-based complex i.e., a stable and efficient molecular electrocatalyst for WO, constructed from a peptidomimetic oligomer called peptoid - N-substituted glycine oligomer - bearing two binding ligands, terpyridine and bipyridine, and one ethanolic group as a proton shuttler. Upon binding of a cobalt ion, this peptoid forms an intramolecular Co(iii) complex, that acts as an efficient electrocatalyst for homogeneous WO in aqueous phosphate buffer at pH 7 with a high faradaic efficiency of up to 92% at an overpotential of about 430 mV, which is the lowest reported for Co-based homogeneous WO electrocatalysts to date. We demonstrated the high stability of the complex during electrocatalytic WO and that the ethanolic side chain plays a key role in the stability and activity of the complex and also in facilitating water binding, thus mimicking an enzymatic second coordination sphere.
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Affiliation(s)
- Suraj Pahar
- Schulich Faculty of Chemistry, Technion-Israel Institute of Technology Technion City Haifa 3200008 Israel
| | - Galia Maayan
- Schulich Faculty of Chemistry, Technion-Israel Institute of Technology Technion City Haifa 3200008 Israel
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2
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Wolfe JA, Horne WS. Application of artificial backbone connectivity in the development of metalloenzyme mimics. Curr Opin Chem Biol 2024; 81:102509. [PMID: 39098212 DOI: 10.1016/j.cbpa.2024.102509] [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: 02/21/2024] [Revised: 07/01/2024] [Accepted: 07/15/2024] [Indexed: 08/06/2024]
Abstract
Metal-dependent enzymes are abundant and vital catalytic agents in nature. The functional versatility of metalloenzymes has made them common targets for improvement by protein engineering as well as mimicry by de novo designed sequences. In both strategies, the incorporation of non-canonical cofactors and/or non-canonical side chains has proved a useful tool. Less explored-but similarly powerful-is the utilization of non-canonical covalent modifications to the polypeptide backbone itself. Such efforts can entail either introduction of limited artificial monomers in natural chains to produce heterogeneous backbones or construction of completely abiotic oligomers that adopt defined folds. Herein, we review recent research applying artificial protein-like backbones in the construction of metalloenzyme mimics, highlighting progress as well as open questions in this emerging field.
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Affiliation(s)
- Jacob A Wolfe
- Department of Chemistry, University of Pittsburgh, Pittsburgh, PA 15260, USA
| | - W Seth Horne
- Department of Chemistry, University of Pittsburgh, Pittsburgh, PA 15260, USA.
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3
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Trinh TK, Jian T, Jin B, Nguyen DT, Zuckermann RN, Chen CL. Designed Metal-Containing Peptoid Membranes as Enzyme Mimetics for Catalytic Organophosphate Degradation. ACS APPLIED MATERIALS & INTERFACES 2023; 15:51191-51203. [PMID: 37879106 PMCID: PMC10636725 DOI: 10.1021/acsami.3c11816] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/09/2023] [Revised: 10/10/2023] [Accepted: 10/12/2023] [Indexed: 10/27/2023]
Abstract
The detoxification of lethal organophosphate (OP) residues in the environment is crucial to prevent human exposure and protect modern society. Despite serving as excellent catalysts for OP degradation, natural enzymes require costly preparation and readily deactivate upon exposure to environmental conditions. Herein, we designed and prepared a series of phosphotriesterase mimics based on stable, self-assembled peptoid membranes to overcome these limitations of the enzymes and effectively catalyze the hydrolysis of dimethyl p-nitrophenyl phosphate (DMNP)─a nerve agent simulant. By covalently attaching metal-binding ligands to peptoid N-termini, we attained enzyme mimetics in the form of surface-functionalized crystalline nanomembranes. These nanomembranes display a precisely controlled arrangement of coordinated metal ions, which resemble the active sites found in phosphotriesterases to promote DMNP hydrolysis. Moreover, using these highly programmable peptoid nanomembranes allows for tuning the local chemical environment of the coordinated metal ion to achieve enhanced hydrolysis activity. Among the crystalline membranes that are active for DMNP degradation, those assembled from peptoids containing bis-quinoline ligands with an adjacent phenyl side chain showed the highest hydrolytic activity with a 219-fold rate acceleration over the background, demonstrating the important role of the hydrophobic environment in proximity to the active sites. Furthermore, these membranes exhibited remarkable stability and were able to retain their catalytic activity after heating to 60 °C and after multiple uses. This work provides insights into the principal features to construct a new class of biomimetic materials with high catalytic efficiency, cost-effectiveness, and reusability applied in nerve agent detoxification.
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Affiliation(s)
- Thi Kim
Hoang Trinh
- Physical
Sciences Division, Pacific Northwest National
Laboratory, Richland, Washington 99352, United States
| | - Tengyue Jian
- Physical
Sciences Division, Pacific Northwest National
Laboratory, Richland, Washington 99352, United States
| | - Biao Jin
- Physical
Sciences Division, Pacific Northwest National
Laboratory, Richland, Washington 99352, United States
| | - Dan-Thien Nguyen
- Physical
Sciences Division, Pacific Northwest National
Laboratory, Richland, Washington 99352, United States
| | - Ronald N. Zuckermann
- Molecular
Foundry, Lawrence Berkeley National
Laboratory, 1 Cyclotron Rd., Berkeley, California 94720, United States
| | - Chun-Long Chen
- Physical
Sciences Division, Pacific Northwest National
Laboratory, Richland, Washington 99352, United States
- Department
of Chemical Engineering, University of Washington, Seattle, Washington 98195, United States
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4
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Qin Q, Li J, Dellemme D, Fossépré M, Barozzino-Consiglio G, Nekkaa I, Boborodea A, Fernandes AE, Glinel K, Surin M, Jonas AM. Dynamic self-assembly of supramolecular catalysts from precision macromolecules. Chem Sci 2023; 14:9283-9292. [PMID: 37712032 PMCID: PMC10498719 DOI: 10.1039/d3sc03133k] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2023] [Accepted: 08/15/2023] [Indexed: 09/16/2023] Open
Abstract
We show the emergence of strong catalytic activity at low concentrations in dynamic libraries of complementary sequence-defined oligomeric chains comprising pendant functional catalytic groups and terminal recognition units. In solution, the dynamic constitutional library created from pairs of such complementary oligomers comprises free oligomers, self-assembled di(oligomeric) macrocycles, and a virtually infinite collection of linear poly(oligomeric) chains. We demonstrate, on an exemplary catalytic system requiring the cooperation of no less than five chemical groups, that supramolecular di(oligomeric) macrocycles exhibit a catalytic turnover frequency ca. 20 times larger than the whole collection of linear poly(oligomers) and free chains. Molecular dynamics simulations and network analysis indicate that self-assembled supramolecular di(oligomeric) macrocycles are stabilized by different interactions, among which chain end pairing. We mathematically model the catalytic properties of such complex dynamic libraries with a small set of physically relevant parameters, which provides guidelines for the synthesis of oligomers capable to self-assemble into functionally-active supramolecular macrocycles over a larger range of concentrations.
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Affiliation(s)
- Qian Qin
- Institute of Condensed Matter and Nanosciences, Université catholique de Louvain Croix du Sud 1 L7.04.02, Louvain-la-Neuve Belgium
| | - Jie Li
- Institute of Condensed Matter and Nanosciences, Université catholique de Louvain Croix du Sud 1 L7.04.02, Louvain-la-Neuve Belgium
| | - David Dellemme
- Laboratory for Chemistry of Novel Materials, Université de Mons - UMONS Avenue Maistriau, 17 B-7000 Mons Belgium
| | - Mathieu Fossépré
- Laboratory for Chemistry of Novel Materials, Université de Mons - UMONS Avenue Maistriau, 17 B-7000 Mons Belgium
| | - Gabriella Barozzino-Consiglio
- Institute of Condensed Matter and Nanosciences, Université catholique de Louvain Croix du Sud 1 L7.04.02, Louvain-la-Neuve Belgium
| | - Imane Nekkaa
- Institute of Condensed Matter and Nanosciences, Université catholique de Louvain Croix du Sud 1 L7.04.02, Louvain-la-Neuve Belgium
| | | | - Antony E Fernandes
- Institute of Condensed Matter and Nanosciences, Université catholique de Louvain Croix du Sud 1 L7.04.02, Louvain-la-Neuve Belgium
- Certech rue Jules Bordet 45 7180 Seneffe Belgium
| | - Karine Glinel
- Institute of Condensed Matter and Nanosciences, Université catholique de Louvain Croix du Sud 1 L7.04.02, Louvain-la-Neuve Belgium
| | - Mathieu Surin
- Laboratory for Chemistry of Novel Materials, Université de Mons - UMONS Avenue Maistriau, 17 B-7000 Mons Belgium
| | - Alain M Jonas
- Institute of Condensed Matter and Nanosciences, Université catholique de Louvain Croix du Sud 1 L7.04.02, Louvain-la-Neuve Belgium
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5
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Behar AE, Maayan G. The First Cu(I)-Peptoid Complex: Enabling Metal Ion Stability and Selectivity via Backbone Helicity. Chemistry 2023; 29:e202301118. [PMID: 37221918 DOI: 10.1002/chem.202301118] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2023] [Revised: 05/17/2023] [Accepted: 05/19/2023] [Indexed: 05/25/2023]
Abstract
Stabilization of Cu(I) is ubiquitous within native copper proteins. Understanding how to stabilize Cu(I) within synthetic biomimetic systems is therefore desired towards biological applications. Peptoids are an important class of peptodomimetics, that can bind metal ions and stabilize them in their high oxidation state. Thus, to date, they were not used for Cu(I) binding. Here we show how the helical peptoid hexamer, having two 2,2'-bipyridine (Bipy) groups that face the same side of the helix, forms the intramolecular air stable Cu(I) complex. Further study of the binding site by rigorous spectroscopic techniques suggests that Cu(I) is tetracoordinated, binding to only three N atoms from the Bipy ligands and to the N-terminus of the peptoid's backbone. A set of control peptoids and experiments indicates that the Cu(I) stability and selectivity are dictated by the intramolecular binding, forced by the helicity of the peptoid, which can be defined as the second coordination sphere of the metal center.
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Affiliation(s)
- Anastasia E Behar
- Schulich Faculty of Chemistry, Technion - Israel Institute of Technology, Technion City, 3200008 Haifa, Israel
| | - Galia Maayan
- Schulich Faculty of Chemistry, Technion - Israel Institute of Technology, Technion City, 3200008 Haifa, Israel
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6
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Ghosh P, Ruan G, Fridman N, Maayan G. Amide bond hydrolysis of peptoids. Chem Commun (Camb) 2022; 58:9922-9925. [PMID: 35979818 DOI: 10.1039/d2cc02717h] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Incorporating a chiral non-coordinating substitution at the N-terminal end within peptoids facilitates regio-selective amide bond hydrolysis mediated by a transition metal ion and/or an acidic buffer as evident by X-ray crystallographic analysis, supported by ESI-MS. This opens up a new direction for peptidomimetic compounds towards future application in chemistry, biology and medicine.
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Affiliation(s)
- Pritam Ghosh
- Schulich Faculty of Chemistry, Technion-Israel Institute of Technology, Technion City, Haifa 3200008, Israel.
| | - Guilin Ruan
- Schulich Faculty of Chemistry, Technion-Israel Institute of Technology, Technion City, Haifa 3200008, Israel.
| | - Natalia Fridman
- Schulich Faculty of Chemistry, Technion-Israel Institute of Technology, Technion City, Haifa 3200008, Israel.
| | - Galia Maayan
- Schulich Faculty of Chemistry, Technion-Israel Institute of Technology, Technion City, Haifa 3200008, Israel.
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7
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Li J, Qin Q, Kardas S, Fossépré M, Surin M, Fernandes AE, Glinel K, Jonas AM. Sequence Rules the Functional Connections and Efficiency of Catalytic Precision Oligomers. ACS Catal 2022. [DOI: 10.1021/acscatal.1c05560] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Jie Li
- Institute of Condensed Matter and Nanosciences, Bio- and Soft Matter, Université Catholique de Louvain, 1348 Louvain-la-Neuve, Belgium
| | - Qian Qin
- Institute of Condensed Matter and Nanosciences, Bio- and Soft Matter, Université Catholique de Louvain, 1348 Louvain-la-Neuve, Belgium
| | - Sinan Kardas
- Laboratory for Chemistry of Novel Materials, Centre of Innovation and Research in Materials and Polymers (CIRMAP), University of Mons - UMONS, 20 Place du Parc, 7000 Mons, Belgium
- Institute for Complex Molecular Systems, Eindhoven University of Technology - TU/e, P.O.
Box 513, Eindhoven 5600 MB, The Netherlands
| | - Mathieu Fossépré
- Laboratory for Chemistry of Novel Materials, Centre of Innovation and Research in Materials and Polymers (CIRMAP), University of Mons - UMONS, 20 Place du Parc, 7000 Mons, Belgium
| | - Mathieu Surin
- Laboratory for Chemistry of Novel Materials, Centre of Innovation and Research in Materials and Polymers (CIRMAP), University of Mons - UMONS, 20 Place du Parc, 7000 Mons, Belgium
| | | | - Karine Glinel
- Institute of Condensed Matter and Nanosciences, Bio- and Soft Matter, Université Catholique de Louvain, 1348 Louvain-la-Neuve, Belgium
| | - Alain M. Jonas
- Institute of Condensed Matter and Nanosciences, Bio- and Soft Matter, Université Catholique de Louvain, 1348 Louvain-la-Neuve, Belgium
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8
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Pimentel EB, Peters-Clarke TM, Coon JJ, Martell JD. DNA-Scaffolded Synergistic Catalysis. J Am Chem Soc 2021; 143:21402-21409. [PMID: 34898209 PMCID: PMC9101022 DOI: 10.1021/jacs.1c10757] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
We report DNA-scaffolded synergistic catalysis, a concept that combines the diverse reaction scope of synergistic catalysis with the ability of DNA to precisely preorganize abiotic groups and undergo stimuli-triggered conformational changes. As an initial demonstration of this concept, we focus on Cu-TEMPO-catalyzed aerobic alcohol oxidation, using DNA as a scaffold to hold a copper cocatalyst and an organic radical cocatalyst (TEMPO) in proximity. The DNA-scaffolded catalyst maintained a high turnover number upon dilution and exhibited 190-fold improvement in catalyst turnover number relative to the unscaffolded cocatalysts. By incorporating the cocatalysts into a DNA hairpin-containing scaffold, we demonstrate that the rate of the synergistic catalytic reaction can be controlled through a reversible DNA conformational change that alters the distance between the cocatalysts. This work demonstrates the compatibility of synergistic catalytic reactions with DNA scaffolding, opening future avenues in reaction discovery, sensing, responsive materials, and chemical biology.
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Affiliation(s)
- Edward B. Pimentel
- Department of Chemistry, University of Wisconsin-Madison, Madison, WI, 53706, USA
| | | | - Joshua J. Coon
- Department of Chemistry, University of Wisconsin-Madison, Madison, WI, 53706, USA, Department of Biomolecular Chemistry, University of Wisconsin-Madison, Madison, WI, 53706, USA, National Center for Quantitative Biology of Complex Systems, Madison, WI, 53706, USA, Morgridge Institute for Research, Madison, WI, 53515, USA
| | - Jeffrey D. Martell
- Department of Chemistry, University of Wisconsin-Madison, Madison, WI, 53706, USA, Carbone Cancer Center, University of Wisconsin School of Medicine and Public Health, Madison, WI, 53705, USA,
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9
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Behar AE, Sabater L, Baskin M, Hureau C, Maayan G. A Water-Soluble Peptoid Chelator that Can Remove Cu 2+ from Amyloid-β Peptides and Stop the Formation of Reactive Oxygen Species Associated with Alzheimer's Disease. Angew Chem Int Ed Engl 2021; 60:24588-24597. [PMID: 34510664 DOI: 10.1002/anie.202109758] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2021] [Revised: 09/01/2021] [Indexed: 12/25/2022]
Abstract
Cu bound to amyloid-β (Aβ) peptides can act as a catalyst for the formation of reactive oxygen species (ROS), leading to neuropathologic degradation associated with Alzheimer's disease (AD). An excellent therapeutic approach is to use a chelator that can selectively remove Cu from Cu-Aβ. This chelator should compete with Zn2+ ions (Zn) that are present in the synaptic cleft while forming a nontoxic Cu complex. Herein we describe P3, a water-soluble peptidomimetic chelator that selectively removes Cu2+ from Cu-Aβ in the presence of Zn and prevent the formation of ROS even in a reductive environment. We demonstrate, based on extensive spectroscopic analysis, that although P3 extracts Zn from Cu,Zn-Aβ faster than it removes Cu, the formed Zn complexes are kinetic products that further dissociate, while CuP3 is formed as an exclusive stable thermodynamic product. Our unique findings, combined with the bioavailability of peptoids, make P3 an excellent drug candidate in the context of AD.
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Affiliation(s)
- Anastasia E Behar
- Schulich Faculty of Chemistry, Technion-Israel Institute of Technology, Technion City, 3200008, Haifa, Israel
| | - Laurent Sabater
- CNRS, LCC (Laboratoire de Chimie de Coordination), 205 route de Narbonne, 31077, Toulouse, France.,Université de Toulouse, 31077, Toulouse, France
| | - Maria Baskin
- Schulich Faculty of Chemistry, Technion-Israel Institute of Technology, Technion City, 3200008, Haifa, Israel
| | - Christelle Hureau
- CNRS, LCC (Laboratoire de Chimie de Coordination), 205 route de Narbonne, 31077, Toulouse, France.,Université de Toulouse, 31077, Toulouse, France
| | - Galia Maayan
- Schulich Faculty of Chemistry, Technion-Israel Institute of Technology, Technion City, 3200008, Haifa, Israel
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10
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Behar AE, Sabater L, Baskin M, Hureau C, Maayan G. A Water‐Soluble Peptoid Chelator that Can Remove Cu
2+
from Amyloid‐β Peptides and Stop the Formation of Reactive Oxygen Species Associated with Alzheimer's Disease. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202109758] [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]
Affiliation(s)
- Anastasia E. Behar
- Schulich Faculty of Chemistry Technion—Israel Institute of Technology Technion City 3200008 Haifa Israel
| | - Laurent Sabater
- CNRS LCC (Laboratoire de Chimie de Coordination) 205 route de Narbonne 31077 Toulouse France
- Université de Toulouse 31077 Toulouse France
| | - Maria Baskin
- Schulich Faculty of Chemistry Technion—Israel Institute of Technology Technion City 3200008 Haifa Israel
| | - Christelle Hureau
- CNRS LCC (Laboratoire de Chimie de Coordination) 205 route de Narbonne 31077 Toulouse France
- Université de Toulouse 31077 Toulouse France
| | - Galia Maayan
- Schulich Faculty of Chemistry Technion—Israel Institute of Technology Technion City 3200008 Haifa Israel
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11
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Ruan G, Ghosh P, Fridman N, Maayan G. A Di-Copper-Peptoid in a Noninnocent Borate Buffer as a Fast Electrocatalyst for Homogeneous Water Oxidation with Low Overpotential. J Am Chem Soc 2021; 143:10614-10623. [PMID: 34237937 DOI: 10.1021/jacs.1c03225] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Water electrolysis is a promising approach toward low-cost renewable fuels; however, the high overpotential and slow kinetics limit its applicability. Studies suggest that either dinuclear copper (Cu) centers or the use of borate buffer can lead to efficient catalysis. We previously demonstrated the ability of peptoids-N-substituted glycine oligomers-to stabilize high-oxidation-state metal ions and to form self-assembled di-copper-peptoid complexes. Capitalizing on these features herein we report on a unique Cu-peptoid duplex, Cu2(BEE)2, that is a fast and stable homogeneous electrocatalyst for water oxidation in borate buffer at pH 9.35, with low overpotential and a high turnover frequency of 129 s-1 (peak current measurements) or 5503 s-1 (FOWA); both are the highest reported for Cu-based water electrocatalysts to date. BEE is a peptoid trimer having one 2,2'-bipyridine ligand and two ethanolic groups, easily synthesized on solid support. Cu2(BEE)2 was characterized by single-crystal X-ray diffraction and various spectroscopic and electrochemical techniques, demonstrating its ability to maintain stable in four cycles of controlled potential electrolysis, leading to a high overall turnover number of 51.4 in a total of 2 h. Interestingly, the catalytic activity of control complexes having only one ethanolic side chain is 2 orders of magnitude lower than that of Cu2(BEE)2. On the basis of this comparison and on mechanistic studies, we propose that the ethanolic side chains and the borate buffer have significant roles in the high stability and catalytic activity of Cu2(BEE)2; the -OH groups facilitate protons transfer, while the borate species enables oxygen transfer toward O-O bond formation.
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Affiliation(s)
- Guilin Ruan
- Schulich Faculty of Chemistry, Technion-Israel Institute of Technology, Technion City, Haifa 32000, Israel
| | - Pritam Ghosh
- Schulich Faculty of Chemistry, Technion-Israel Institute of Technology, Technion City, Haifa 32000, Israel
| | - Natalia Fridman
- Schulich Faculty of Chemistry, Technion-Israel Institute of Technology, Technion City, Haifa 32000, Israel
| | - Galia Maayan
- Schulich Faculty of Chemistry, Technion-Israel Institute of Technology, Technion City, Haifa 32000, Israel.,The Nancy and Stephen Grand Technion Energy Program, Technion-Israel Institute of Technology, Technion City, Haifa 32000, Israel
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12
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Oh J, Kang D, Hong S, Kim SH, Choi JH, Seo J. Formation of a tris(catecholato) iron(III) complex with a nature-inspired cyclic peptoid ligand. Dalton Trans 2021; 50:3459-3463. [PMID: 33599663 DOI: 10.1039/d1dt00091h] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Siderophore-mimicking macrocyclic peptoids were synthesized. Peptoid 3 with intramolecular hydrogen bonds showed an optimally arranged primary coordination sphere leading to a stable catecholate-iron complex. The tris(catecholato) structure of 3-Fe(iii) was determined with UV-vis, fluorescence, and EPR spectroscopies and DFT calculations. The iron binding affinity was comparable to that of deferoxamine, with enhanced stability upon air exposure.
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Affiliation(s)
- Jinyoung Oh
- Department of Chemistry, School of Physics and Chemistry, Gwangju Institute of Science and Technology, 123 Cheomdangwagi-ro, Buk-gu, Gwangju, 61005, Republic of Korea.
| | - Dahyun Kang
- Department of Chemistry, School of Physics and Chemistry, Gwangju Institute of Science and Technology, 123 Cheomdangwagi-ro, Buk-gu, Gwangju, 61005, Republic of Korea.
| | - Sugyeong Hong
- Western Seoul Center, Korea Basic Science Institute, University-Industry Cooperation Building, 150 Bukahyun-ro, Seodaemun-gu, Seoul, 120-140, Republic of Korea
| | - Sun H Kim
- Western Seoul Center, Korea Basic Science Institute, University-Industry Cooperation Building, 150 Bukahyun-ro, Seodaemun-gu, Seoul, 120-140, Republic of Korea
| | - Jun-Ho Choi
- Department of Chemistry, School of Physics and Chemistry, Gwangju Institute of Science and Technology, 123 Cheomdangwagi-ro, Buk-gu, Gwangju, 61005, Republic of Korea.
| | - Jiwon Seo
- Department of Chemistry, School of Physics and Chemistry, Gwangju Institute of Science and Technology, 123 Cheomdangwagi-ro, Buk-gu, Gwangju, 61005, Republic of Korea.
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13
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Aksakal R, Mertens C, Soete M, Badi N, Du Prez F. Applications of Discrete Synthetic Macromolecules in Life and Materials Science: Recent and Future Trends. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2021; 8:2004038. [PMID: 33747749 PMCID: PMC7967060 DOI: 10.1002/advs.202004038] [Citation(s) in RCA: 57] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/21/2020] [Revised: 11/22/2020] [Indexed: 05/19/2023]
Abstract
In the last decade, the field of sequence-defined polymers and related ultraprecise, monodisperse synthetic macromolecules has grown exponentially. In the early stage, mainly articles or reviews dedicated to the development of synthetic routes toward their preparation have been published. Nowadays, those synthetic methodologies, combined with the elucidation of the structure-property relationships, allow envisioning many promising applications. Consequently, in the past 3 years, application-oriented papers based on discrete synthetic macromolecules emerged. Hence, material science applications such as macromolecular data storage and encryption, self-assembly of discrete structures and foldamers have been the object of many fascinating studies. Moreover, in the area of life sciences, such structures have also been the focus of numerous research studies. Here, it is aimed to highlight these recent applications and to give the reader a critical overview of the future trends in this area of research.
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Affiliation(s)
- Resat Aksakal
- Polymer Chemistry Research GroupCentre of Macromolecular Chemistry (CMaC)Department of Organic and Macromolecular ChemistryGhent UniversityKrijgslaan 281 S4‐bisGhentB‐9000Belgium
| | - Chiel Mertens
- Polymer Chemistry Research GroupCentre of Macromolecular Chemistry (CMaC)Department of Organic and Macromolecular ChemistryGhent UniversityKrijgslaan 281 S4‐bisGhentB‐9000Belgium
| | - Matthieu Soete
- Polymer Chemistry Research GroupCentre of Macromolecular Chemistry (CMaC)Department of Organic and Macromolecular ChemistryGhent UniversityKrijgslaan 281 S4‐bisGhentB‐9000Belgium
| | - Nezha Badi
- Polymer Chemistry Research GroupCentre of Macromolecular Chemistry (CMaC)Department of Organic and Macromolecular ChemistryGhent UniversityKrijgslaan 281 S4‐bisGhentB‐9000Belgium
| | - Filip Du Prez
- Polymer Chemistry Research GroupCentre of Macromolecular Chemistry (CMaC)Department of Organic and Macromolecular ChemistryGhent UniversityKrijgslaan 281 S4‐bisGhentB‐9000Belgium
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14
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Ghosh P, Rozenberg I, Maayan G. Sequence-function relationship within water-soluble Peptoid Chelators for Cu 2. J Inorg Biochem 2021; 217:111388. [PMID: 33618230 DOI: 10.1016/j.jinorgbio.2021.111388] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2020] [Revised: 01/31/2021] [Accepted: 02/05/2021] [Indexed: 12/26/2022]
Abstract
Chelation of Cu2+ by synthetic molecules is an emerging therapeutic approach for treating several illnesses in human body such as Wilson disease, cancer and more. Among synthetic metal chelators, those based on peptoids - N-substituted glycine oligomers - are advantageous due to their structural similarity to peptides, ease of synthesis on solid support and versatile controlled sequences. Tuning peptoid sequences, via systematically changing at least one side chain, can facilitate and control their function. Along these lines, this work aims to explore the role of the non-coordinating side chain within peptoid chelators in order to understand the factors that control the selectivity of these chelators to Cu2+ in water medium. To this aim, a set of peptoid trimers having a pyridine group at the acetylated N-terminal, a 2,2'-bipyridine group at the second position and a non-coordinating group at the C-terminus, where the latter is systematically varied between aromatic, aliphatic, chiral or non-chiral, were investigated as selective chelators for Cu2+. The effect of the position of the non-coordinating group on the selectivity of the peptoid to Cu2+ was also tested. Based on extensive spectroscopic data, we found that the choice of the non-coordinating group along with its position dramatically influences the selectivity of the peptoids to Cu2+. We showed that peptoids having bulky chiral groups at the C-terminus enable high selectivity to Cu2+. We further demonstrated the ability of one of the selective chelators to remove Cu2+ from the natural copper binding protein metallothionein in HEPES (4-(2-hydroxyethyl)-1-piperazineethanesulfonic acid) buffer medium.
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Affiliation(s)
- Pritam Ghosh
- Schulich Faculty of Chemistry, Technion-Israel Institute of Technology, Technion City, Haifa 3200008, Israel
| | - Ido Rozenberg
- Schulich Faculty of Chemistry, Technion-Israel Institute of Technology, Technion City, Haifa 3200008, Israel
| | - Galia Maayan
- Schulich Faculty of Chemistry, Technion-Israel Institute of Technology, Technion City, Haifa 3200008, Israel.
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15
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Ruan G, Engelberg L, Ghosh P, Maayan G. A unique Co(iii)-peptoid as a fast electrocatalyst for homogeneous water oxidation with low overpotential. Chem Commun (Camb) 2021; 57:939-942. [DOI: 10.1039/d0cc06912d] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A peptoid trimer incorporating terpyridine and ethanol forms an intermolecular cobalt(iii) complex, which performs as a soluble electrocatalyst for water oxidation with a minimal overpotential of 350 mV and a high turnover frequency of 108 s−1.
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Affiliation(s)
- Guilin Ruan
- Schulich Faculty of Chemistry
- Technion – Israel Institute of Technology
- Haifa
- Israel
| | - Lee Engelberg
- Schulich Faculty of Chemistry
- Technion – Israel Institute of Technology
- Haifa
- Israel
| | - Pritam Ghosh
- Schulich Faculty of Chemistry
- Technion – Israel Institute of Technology
- Haifa
- Israel
| | - Galia Maayan
- Schulich Faculty of Chemistry
- Technion – Israel Institute of Technology
- Haifa
- Israel
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16
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Abstract
Sequence-defined oligomeric molecules with discrete folding propensities, termed foldamers, are a versatile source of agents with tailored structure and function. An inspiration for the development of the foldamer paradigm are natural biomacromolecules, the sequence-encoded folding of which is the basis of life. Metal ions and clusters are common features in proteins, where the role of metal varies from supporting structure to enabling function. The ubiquity of metals in natural systems suggests promise for metals in the context of folded artificial backbones. In this Minireview, we highlight efforts to realize this potential through a survey of published work on the design, synthesis, and characterization of metal-binding foldamers.
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Affiliation(s)
- Shilpa R Rao
- Department of Chemistry, University of Pittsburgh, Pittsburgh, PA, 15260, USA
| | - Shelby L Schettler
- Department of Chemistry, University of Pittsburgh, Pittsburgh, PA, 15260, USA
| | - W Seth Horne
- Department of Chemistry, University of Pittsburgh, Pittsburgh, PA, 15260, USA
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17
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Ghosh P, Maayan G. A Water‐Soluble Peptoid that Can Extract Cu
2+
from Metallothionein via Selective Recognition. Chemistry 2020; 27:1383-1389. [DOI: 10.1002/chem.202003711] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2020] [Revised: 08/27/2020] [Indexed: 12/19/2022]
Affiliation(s)
- Pritam Ghosh
- Schulich Faculty of Chemistry Technion-Israel Institute of Technology Technion City Haifa 3200008 Israel
| | - Galia Maayan
- Schulich Faculty of Chemistry Technion-Israel Institute of Technology Technion City Haifa 3200008 Israel
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18
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Ghosh P, Fridman N, Maayan G. From Distinct Metallopeptoids to Self‐Assembled Supramolecular Architectures. Chemistry 2020; 27:634-640. [DOI: 10.1002/chem.202003612] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2020] [Revised: 08/25/2020] [Indexed: 12/23/2022]
Affiliation(s)
- Pritam Ghosh
- Schulich Faculty of Chemistry Technion-Israel Institute of Technology Technion City Haifa 3200008 Israel
| | - Natalia Fridman
- Schulich Faculty of Chemistry Technion-Israel Institute of Technology Technion City Haifa 3200008 Israel
| | - Galia Maayan
- Schulich Faculty of Chemistry Technion-Israel Institute of Technology Technion City Haifa 3200008 Israel
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20
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Ghosh P, Maayan G. A rationally designed peptoid for the selective chelation of Zn 2+ over Cu 2. Chem Sci 2020; 11:10127-10134. [PMID: 34094275 PMCID: PMC8162371 DOI: 10.1039/d0sc03391j] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
The selective removal of Zn2+ from proteins by using a synthetic chelator is a promising therapeutic approach for the treatment of various diseases including cancer. Although the chelation of Zn2+ is well known, its removal from a protein in the presence of potential competing biologically relevant ions such as Cu2+ is hardly explored. Herein we present a peptoid - N-substituted glycine trimer - incorporating a picolyl group at the N-terminus, a non-coordinating but structurally directing benzyl group at the C-terminus and a 2,2':6',2''-terpyridine group in the second position, that selectively binds Zn2+ ions in the presence of excess Cu2+ ions in water. We further demonstrate that this chelator can selectively bind Zn2+ from a pool of excess biologically relevant and competitive ions (Cu2+, Fe3+, Ca2+, Mg2+, Na+, and K+) in a simulated body fluid (SBF), and also its ability to remove Zn2+ from a natural zinc protein domain (PYKCPECGKSFSQKSDLVKHQRTHTG) in a SBF.
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Affiliation(s)
- Pritam Ghosh
- Schulich Faculty of Chemistry, Technion-Israel Institute of Technology Technion City Haifa 3200008 Israel
| | - Galia Maayan
- Schulich Faculty of Chemistry, Technion-Israel Institute of Technology Technion City Haifa 3200008 Israel
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21
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Xuan S, Zuckermann RN. Engineering the atomic structure of sequence-defined peptoid polymers and their assemblies. POLYMER 2020. [DOI: 10.1016/j.polymer.2020.122691] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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22
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Darapaneni CM, Ghosh P, Ghosh T, Maayan G. Unique β‐Turn Peptoid Structures and Their Application as Asymmetric Catalysts. Chemistry 2020; 26:9573-9579. [DOI: 10.1002/chem.202000595] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2020] [Indexed: 12/13/2022]
Affiliation(s)
| | - Pritam Ghosh
- Schulich Faculty of ChemistryTechnion-Israel Institute of Technology Haifa 3200008 Israel
| | - Totan Ghosh
- Schulich Faculty of ChemistryTechnion-Israel Institute of Technology Haifa 3200008 Israel
| | - Galia Maayan
- Schulich Faculty of ChemistryTechnion-Israel Institute of Technology Haifa 3200008 Israel
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23
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Recent Advances in Copper Catalyzed Alcohol Oxidation in Homogeneous Medium. Molecules 2020; 25:molecules25030748. [PMID: 32050493 PMCID: PMC7037375 DOI: 10.3390/molecules25030748] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2019] [Revised: 01/26/2020] [Accepted: 02/06/2020] [Indexed: 11/17/2022] Open
Abstract
The development of sustainable processes and products through innovative catalytic materials and procedures that allow a better use of resources is undoubtedly one of the most significant issues facing researchers nowadays. Environmental and economically advanced catalytic processes for selective oxidation of alcohols are currently focused on designing new catalysts able to activate green oxidants (dioxygen or peroxides) and applying unconventional conditions of sustainable significance, like the use of microwave irradiation as an alternative energy source. This short review aims to provide an overview of the recently (2015–2020) discovered homogeneous aerobic and peroxidative oxidations of primary and secondary alcohols catalyzed by copper complexes, highlighting new catalysts with potential application in sustainable organic synthesis, with significance in academia and industry.
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24
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A Resin-Bound Peptoid as a Recyclable Heterogeneous Catalyst for Oxidation Reactions. European J Org Chem 2020. [DOI: 10.1002/ejoc.201901739] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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25
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Reese HR, Shanahan CC, Proulx C, Menegatti S. Peptide science: A "rule model" for new generations of peptidomimetics. Acta Biomater 2020; 102:35-74. [PMID: 31698048 DOI: 10.1016/j.actbio.2019.10.045] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2019] [Revised: 10/17/2019] [Accepted: 10/30/2019] [Indexed: 02/07/2023]
Abstract
Peptides have been heavily investigated for their biocompatible and bioactive properties. Though a wide array of functionalities can be introduced by varying the amino acid sequence or by structural constraints, properties such as proteolytic stability, catalytic activity, and phase behavior in solution are difficult or impossible to impart upon naturally occurring α-L-peptides. To this end, sequence-controlled peptidomimetics exhibit new folds, morphologies, and chemical modifications that create new structures and functions. The study of these new classes of polymers, especially α-peptoids, has been highly influenced by the analysis, computational, and design techniques developed for peptides. This review examines techniques to determine primary, secondary, and tertiary structure of peptides, and how they have been adapted to investigate peptoid structure. Computational models developed for peptides have been modified to predict the morphologies of peptoids and have increased in accuracy in recent years. The combination of in vitro and in silico techniques have led to secondary and tertiary structure design principles that mirror those for peptides. We then examine several important developments in peptoid applications inspired by peptides such as pharmaceuticals, catalysis, and protein-binding. A brief survey of alternative backbone structures and research investigating these peptidomimetics shows how the advancement of peptide and peptoid science has influenced the growth of numerous fields of study. As peptide, peptoid, and other peptidomimetic studies continue to advance, we will expect to see higher throughput structural analyses, greater computational accuracy and functionality, and wider application space that can improve human health, solve environmental challenges, and meet industrial needs. STATEMENT OF SIGNIFICANCE: Many historical, chemical, and functional relations draw a thread connecting peptides to their recent cognates, the "peptidomimetics". This review presents a comprehensive survey of this field by highlighting the width and relevance of these familial connections. In the first section, we examine the experimental and computational techniques originally developed for peptides and their morphing into a broader analytical and predictive toolbox. The second section presents an excursus of the structures and properties of prominent peptidomimetics, and how the expansion of the chemical and structural diversity has returned new exciting properties. The third section presents an overview of technological applications and new families of peptidomimetics. As the field grows, new compounds emerge with clear potential in medicine and advanced manufacturing.
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26
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Zborovsky L, Tigger‐Zaborov H, Maayan G. Sequence and Structure of Peptoid Oligomers Can Tune the Photoluminescence of an Embedded Ruthenium Dye. Chemistry 2019; 25:9098-9107. [DOI: 10.1002/chem.201901494] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2019] [Revised: 05/01/2019] [Indexed: 01/31/2023]
Affiliation(s)
| | | | - Galia Maayan
- Technion-Israel Institute of Technology Haifa Israel
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27
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Culf AS. Peptoids as tools and sensors. Biopolymers 2019; 110:e23285. [PMID: 31070792 DOI: 10.1002/bip.23285] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2018] [Revised: 04/09/2019] [Accepted: 04/15/2019] [Indexed: 12/19/2022]
Abstract
A review of molecular tools and sensors assembled on N-substituted glycine, or α-peptoid, oligomers between 2013 and November 2018 with the following sections: (a) Peptoids as crystal growth modifiers, (b) Peptoids as catalysts, (c) Ion and molecule sequestration and transport, (d) Peptoid sensors, (e) Macromolecule recognition, (f) Cellular transporters, (g) Medical imaging, (h) Future direction and (i) Summary and outlook. Peptoids are a promising class of peptide mimic making them an excellent platform for functional molecule preparation. Attributes of peptoid oligomers include: (a) the ease of precise sequence definition and mono-dispersity; (b) access to a vast chemical space within simple and repeating chemical preparative steps and (c) thermal, chemical and biological stability all lending support for their application in a number of areas, with some that have been realised to date. The peptoid tool and sensor examples selected have realised practical utility. They serve to illustrate the rapidity of new insight that can generate in many disparate areas of science and technology, enabling the quick assembly of design criteria for efficient peptoid molecular tools and sensors.
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Affiliation(s)
- Adrian S Culf
- Sussex Research Laboratories, Inc., Ottawa, Ontario, Canada
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28
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Abstract
The oxidation of alcohols to the corresponding carbonyl products is an important organic transformation and the products are used in a variety of applications. The development of catalytic methods for selective alcohol oxidation have garnered significant attention in an attempt to find a more sustainable method without any limitations. Copper, in combination with 2,2,6,6-tetramethyl-1-piperidine N-oxyl (TEMPO) and supported by organic ligands, have emerged as the most effective catalysts for selective alcohol oxidation and these catalyst systems are frequently compared to galactose oxidase (GOase). The efficiency of GOase has led to extensive research to mimic the active sites of these enzymes, leading to a variety of Cu/TEMPO· catalyst systems being reported over the years. The mechanistic pathway by which Cu/TEMPO· catalyst systems operate has been investigated by several research groups, which led to partially contradicting mechanistic description. Due to the disadvantages and limitations of employing TEMPO· as co-catalyst, alternative nitroxyl radicals or in situ formed radicals, as co-catalysts, have been successfully evaluated in alcohol oxidation. Herein we discuss the development and mechanistic elucidation of Cu/TEMPO· catalyst systems as biomimetic alcohol oxidation catalysts.
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29
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Wellhöfer I, Frydenvang K, Kotesova S, Christiansen AM, Laursen JS, Olsen CA. Functionalized Helical β-Peptoids. J Org Chem 2019; 84:3762-3779. [DOI: 10.1021/acs.joc.9b00218] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Isabelle Wellhöfer
- Department of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, Universitetsparken 2, DK-2100 Copenhagen, Denmark
| | - Karla Frydenvang
- Department of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, Universitetsparken 2, DK-2100 Copenhagen, Denmark
| | - Simona Kotesova
- Department of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, Universitetsparken 2, DK-2100 Copenhagen, Denmark
| | - Andreas M. Christiansen
- Department of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, Universitetsparken 2, DK-2100 Copenhagen, Denmark
| | - Jonas S. Laursen
- Department of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, Universitetsparken 2, DK-2100 Copenhagen, Denmark
| | - Christian A. Olsen
- Department of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, Universitetsparken 2, DK-2100 Copenhagen, Denmark
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Baskin M, Zhu H, Qu ZW, Chill JH, Grimme S, Maayan G. Folding of unstructured peptoids and formation of hetero-bimetallic peptoid complexes upon side-chain-to-metal coordination. Chem Sci 2019; 10:620-632. [PMID: 30713653 PMCID: PMC6334629 DOI: 10.1039/c8sc03616k] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2018] [Accepted: 10/16/2018] [Indexed: 01/05/2023] Open
Abstract
Helices are key structural features in biopolymers, enabling a variety of biological functions. Mimicking these secondary structure motifs has wide potential in the development of biomimetic materials. Peptoids, N-substituted glycine oligomers, are an important class of peptide mimics that can adopt polyproline type helices if the majority of their sequence consists of chiral bulky pendent groups. Such side-chains are structure inducers but they have no functional value. We present here the inclusion of several metal-binding groups in one peptoid oligomer as a new platform towards the development of functional helical peptoids. Thus, we describe the coordination of two metal ions to unstructured peptoids incorporating four 8-hydroxyquinoline (HQ) ligands at fixed positions as two (HQ, HQ) metal binding sites, and a mixture of chiral benzyl and alkyl substituents in varied positions along the peptoid backbone. For the first time, we demonstrate by circular dichroism spectroscopy, solution NMR techniques and high-level DFT calculations that some of these unstructured peptoids can fold upon metal binding to form helical structures. Replacing one HQ ligand with a terpyridine (Terpy) ligand resulted in unique sequences that can selectively coordinate Cu2+ to the (Terpy, HQ) and Zn2+ (or Co2+) to the (HQ, HQ) sites from a solution mixture containing Cu2+ and Zn2+ (or Co2+) ions. Interestingly, the binding of Cu2+ to the (Terpy, HQ) site in one of these peptoids can initiate a conformational change that in turn facilitates the coordination of Zn2+ (or Co2+) ions to the (HQ, HQ) site, demonstrating a unique example of positive allosteric cooperativity in peptide mimics.
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Affiliation(s)
- Maria Baskin
- Schulich Faculty of Chemistry , Technion - Israel Institute of Technology , Technion City , Hailfa 32000 , Israel .
| | - Hui Zhu
- Mulliken Center for Theoretical Chemistry , Rheinische Friedrich-Wilhelms-Universität Bonn , Beringstrasse 4 , 53115 Bonn , Germany
| | - Zheng-Wang Qu
- Mulliken Center for Theoretical Chemistry , Rheinische Friedrich-Wilhelms-Universität Bonn , Beringstrasse 4 , 53115 Bonn , Germany
| | - Jordan H Chill
- Department of Chemistry , Bar-Ilan University , Ramat Gan 52900 , Israel
| | - Stefan Grimme
- Mulliken Center for Theoretical Chemistry , Rheinische Friedrich-Wilhelms-Universität Bonn , Beringstrasse 4 , 53115 Bonn , Germany
| | - Galia Maayan
- Schulich Faculty of Chemistry , Technion - Israel Institute of Technology , Technion City , Hailfa 32000 , Israel .
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31
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Tigger-Zaborov H, Maayan G. Aggregation of Ag(0) nanoparticles to unexpected stable chain-like assemblies mediated by 2,2′-bipyridine decorated peptoids. J Colloid Interface Sci 2019; 533:598-603. [DOI: 10.1016/j.jcis.2018.08.094] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2018] [Revised: 08/26/2018] [Accepted: 08/27/2018] [Indexed: 10/28/2022]
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Metalloporphyrin Dimers Bridged by a Peptoid Helix: Host-Guest Interaction and Chiral Recognition. Molecules 2018; 23:molecules23112741. [PMID: 30352958 PMCID: PMC6278558 DOI: 10.3390/molecules23112741] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2018] [Revised: 10/22/2018] [Accepted: 10/22/2018] [Indexed: 11/22/2022] Open
Abstract
Co-facial porphyrins have been designed to construct porphyrin tweezers with versatile molecular recognition capabilities. In this study, we synthesized metalloporphyrin–peptoid conjugates (MPPCs) displaying two metalloporphyrins on a peptoid scaffold with either achiral unfolded (1) or helical (2 and 3) secondary structures. Host–guest complexation of MPPCs was realized with various guests of different lengths and basicities, and the extent of complexation was measured by UV-vis and circular dichroism (CD) spectroscopic titration. Intermolecular and intramolecular chirality induction were observed on achiral and chiral peptoid backbones, respectively. Spectroscopic data indicated that a broad scope of achiral guests can be recognized by chiral 2; in particular, longer and more flexible guests were seen to bind more tightly on 2. In addition, chiral 2 provided a distinct CD couplet with dl-, d-, or l-Lys-OMe, which was a result of the diastereomeric host–guest complex formation. Our results indicated that MPPCs can recognize, contrast, and analyze various achiral, chiral, or racemic molecules. Based on co-facial metalloporphyrins present on peptoid scaffolds, we developed a novel class of porphyrin tweezers, which can be further utilized in asymmetric catalysis, molecular sensing, and drug delivery.
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Ghosh T, Ghosh P, Maayan G. A Copper-Peptoid as a Highly Stable, Efficient, and Reusable Homogeneous Water Oxidation Electrocatalyst. ACS Catal 2018. [DOI: 10.1021/acscatal.8b03661] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Totan Ghosh
- Schulich Faculty of Chemistry, Technion-Israel Institute of Technology, Technion City, Haifa 3200008, Israel
| | - Pritam Ghosh
- Schulich Faculty of Chemistry, Technion-Israel Institute of Technology, Technion City, Haifa 3200008, Israel
| | - Galia Maayan
- Schulich Faculty of Chemistry, Technion-Israel Institute of Technology, Technion City, Haifa 3200008, Israel
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34
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Lee YJ, Kang D, Seo J. Facile method for the synthesis of triazole- and tetrazole-containing peptoids on a solid support. Tetrahedron Lett 2018. [DOI: 10.1016/j.tetlet.2018.07.043] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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35
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Chandra P, Jonas AM, Fernandes AE. Spatial Coordination of Cooperativity in Silica-Supported Cu/TEMPO/Imidazole Catalytic Triad. ACS Catal 2018. [DOI: 10.1021/acscatal.8b01399] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Prakash Chandra
- Institute of Condensed Matter and Nanosciences, Université catholique de Louvain, 1348 Louvain-la-Neuve, Belgium
| | - Alain M. Jonas
- Institute of Condensed Matter and Nanosciences, Université catholique de Louvain, 1348 Louvain-la-Neuve, Belgium
| | - Antony E. Fernandes
- Institute of Condensed Matter and Nanosciences, Université catholique de Louvain, 1348 Louvain-la-Neuve, Belgium
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36
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Ghosh T, Fridman N, Kosa M, Maayan G. Self-Assembled Cyclic Structures from Copper(II) Peptoids. Angew Chem Int Ed Engl 2018; 57:7703-7708. [DOI: 10.1002/anie.201800583] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2018] [Revised: 03/01/2018] [Indexed: 01/11/2023]
Affiliation(s)
- Totan Ghosh
- Schulich Faculty of Chemistry; Technion-Israel Institute of Technology; Technion City Haifa 3200008 Israel
| | - Natalia Fridman
- Schulich Faculty of Chemistry; Technion-Israel Institute of Technology; Technion City Haifa 3200008 Israel
| | - Monica Kosa
- Schulich Faculty of Chemistry; Technion-Israel Institute of Technology; Technion City Haifa 3200008 Israel
| | - Galia Maayan
- Schulich Faculty of Chemistry; Technion-Israel Institute of Technology; Technion City Haifa 3200008 Israel
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37
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Ghosh T, Fridman N, Kosa M, Maayan G. Self-Assembled Cyclic Structures from Copper(II) Peptoids. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201800583] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Totan Ghosh
- Schulich Faculty of Chemistry; Technion-Israel Institute of Technology; Technion City Haifa 3200008 Israel
| | - Natalia Fridman
- Schulich Faculty of Chemistry; Technion-Israel Institute of Technology; Technion City Haifa 3200008 Israel
| | - Monica Kosa
- Schulich Faculty of Chemistry; Technion-Israel Institute of Technology; Technion City Haifa 3200008 Israel
| | - Galia Maayan
- Schulich Faculty of Chemistry; Technion-Israel Institute of Technology; Technion City Haifa 3200008 Israel
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38
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Solid-Phase Synthesis of Azole-Comprising Peptidomimetics and Coordination of a Designed Analog to Zn 2. Molecules 2018; 23:molecules23051035. [PMID: 29710766 PMCID: PMC6102547 DOI: 10.3390/molecules23051035] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2018] [Revised: 04/23/2018] [Accepted: 04/26/2018] [Indexed: 12/14/2022] Open
Abstract
Peptidomimetics that can coordinate transition metals have a variety of potential applications as catalysts, sensors, or materials. A new modular peptidomimetic scaffold, the “azole peptoid”, is introduced here. We report methods for the solid-phase synthesis of eleven examples of trimeric N-substituted oligoamides that include oxazole- or thiazole-functionalized backbones. The products prepared comprise a diversity of functionality, including a metal-coordinating terpyridine group. The modular synthetic approach enables ready preparation of analogs for specific applications. To highlight a potential use of this new synthetic scaffold, a trimeric azole peptoid functionalized with a terpyridine residue was prepared and studied. The characteristic 2:1 ligand:metal binding of this terpyridine-functionalized azole peptoid to Zn2+ in aqueous solution was observed. These studies introduce azole peptoids as a useful class of biomimetic molecules for further study and application.
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39
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Wang L, Bie Z, Shang S, Li G, Niu J, Gao S. Cu‐Catalyzed Aerobic Oxidation of Alcohols with a Multi‐Functional NMI‐TEMPO. ChemistrySelect 2018. [DOI: 10.1002/slct.201800398] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Lianyue Wang
- Dalian National Laboratory for Clean EnergyDalian Institute of Chemical Physicsthe Chinese Academy of Sciences Dalian 116023 China
| | - Zhixing Bie
- Henan Key Laboratory of Polyoxometalate ChemistryInstitute of Molecular and Crystal EngineeringCollege of Chemistry and Chemical EngineeringHenan University Kaifeng Henan 475004 China
| | - Sensen Shang
- Dalian National Laboratory for Clean EnergyDalian Institute of Chemical Physicsthe Chinese Academy of Sciences Dalian 116023 China
| | - Guosong Li
- Dalian National Laboratory for Clean EnergyDalian Institute of Chemical Physicsthe Chinese Academy of Sciences Dalian 116023 China
| | - Jingyang Niu
- Henan Key Laboratory of Polyoxometalate ChemistryInstitute of Molecular and Crystal EngineeringCollege of Chemistry and Chemical EngineeringHenan University Kaifeng Henan 475004 China
| | - Shuang Gao
- Dalian National Laboratory for Clean EnergyDalian Institute of Chemical Physicsthe Chinese Academy of Sciences Dalian 116023 China
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40
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Baskin M, Maayan G. Chiral Cu(ii), Co(ii) and Ni(ii) complexes based on 2,2′-bipyridine modified peptoids. Dalton Trans 2018; 47:10767-10774. [DOI: 10.1039/c8dt01308j] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Helical peptoids bearing 2,2′-bipyridine, varied in their chiral bulky side chains and their N-terminus form chiral complexes with Cu(ii), Co(ii) and Ni(ii) via intramolecular binding.
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Affiliation(s)
- Maria Baskin
- Schulich Faculty of Chemistry
- Technion-Israel Institute of Technology
- Haifa
- Israel
| | - Galia Maayan
- Schulich Faculty of Chemistry
- Technion-Israel Institute of Technology
- Haifa
- Israel
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41
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Darapaneni CM, Kaniraj PJ, Maayan G. Water soluble hydrophobic peptoids via a minor backbone modification. Org Biomol Chem 2018; 16:1480-1488. [DOI: 10.1039/c7ob02928d] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
The incorporation of piperazine or homopiperazine within hydrophobic peptoid scaffolds leads to their water solubility while increasing their overall conformational order in water.
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Affiliation(s)
| | - Prathap Jeya Kaniraj
- Schulich Faculty of Chemistry
- Technion – Israel Institute of Technology
- Technion City
- Israel
| | - Galia Maayan
- Schulich Faculty of Chemistry
- Technion – Israel Institute of Technology
- Technion City
- Israel
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42
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Zborovsky L, Smolyakova A, Baskin M, Maayan G. A Pure Polyproline Type I-like Peptoid Helix by Metal Coordination. Chemistry 2017; 24:1159-1167. [DOI: 10.1002/chem.201704497] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2017] [Indexed: 11/05/2022]
Affiliation(s)
- Lieby Zborovsky
- Schulich Faculty of Chemistry; Technion-Israel Institute of Technology; Haifa 32000 Israel
| | - Alisa Smolyakova
- Schulich Faculty of Chemistry; Technion-Israel Institute of Technology; Haifa 32000 Israel
| | - Maria Baskin
- Schulich Faculty of Chemistry; Technion-Israel Institute of Technology; Haifa 32000 Israel
| | - Galia Maayan
- Schulich Faculty of Chemistry; Technion-Israel Institute of Technology; Haifa 32000 Israel
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43
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Dutta I, De S, Yadav S, Mondol R, Bera JK. Aerobic oxidative coupling of alcohols and amines towards imine formation by a dicopper(I,I) catalyst. J Organomet Chem 2017. [DOI: 10.1016/j.jorganchem.2017.05.009] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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44
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Chandra Mohan D, Sadhukha A, Maayan G. A metallopeptoid as an efficient bioinspired cooperative catalyst for the aerobic oxidative synthesis of imines. J Catal 2017. [DOI: 10.1016/j.jcat.2017.09.018] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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45
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Kinghorn MJ, Valdivia-Berroeta GA, Chantry DR, Smith MS, Ence CC, Draper SRE, Duval JS, Masino BM, Cahoon SB, Flansburg RR, Conder CJ, Price JL, Michaelis DJ. Proximity-Induced Reactivity and Product Selectivity with a Rationally Designed Bifunctional Peptide Catalyst. ACS Catal 2017. [DOI: 10.1021/acscatal.7b02699] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Michael J. Kinghorn
- Department of Chemistry and
Biochemistry, Brigham Young University, Provo, Utah 84602, United States
| | | | - Donalee R. Chantry
- Department of Chemistry and
Biochemistry, Brigham Young University, Provo, Utah 84602, United States
| | - Mason S. Smith
- Department of Chemistry and
Biochemistry, Brigham Young University, Provo, Utah 84602, United States
| | - Chloe C. Ence
- Department of Chemistry and
Biochemistry, Brigham Young University, Provo, Utah 84602, United States
| | - Steven R. E. Draper
- Department of Chemistry and
Biochemistry, Brigham Young University, Provo, Utah 84602, United States
| | - Jared S. Duval
- Department of Chemistry and
Biochemistry, Brigham Young University, Provo, Utah 84602, United States
| | - Bryan M. Masino
- Department of Chemistry and
Biochemistry, Brigham Young University, Provo, Utah 84602, United States
| | - Samuel B. Cahoon
- Department of Chemistry and
Biochemistry, Brigham Young University, Provo, Utah 84602, United States
| | - Rachael R. Flansburg
- Department of Chemistry and
Biochemistry, Brigham Young University, Provo, Utah 84602, United States
| | - Cory J. Conder
- Department of Chemistry and
Biochemistry, Brigham Young University, Provo, Utah 84602, United States
| | - Joshua L. Price
- Department of Chemistry and
Biochemistry, Brigham Young University, Provo, Utah 84602, United States
| | - David J. Michaelis
- Department of Chemistry and
Biochemistry, Brigham Young University, Provo, Utah 84602, United States
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46
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Roy O, Dumonteil G, Faure S, Jouffret L, Kriznik A, Taillefumier C. Homogeneous and Robust Polyproline Type I Helices from Peptoids with Nonaromatic α-Chiral Side Chains. J Am Chem Soc 2017; 139:13533-13540. [PMID: 28837348 DOI: 10.1021/jacs.7b07475] [Citation(s) in RCA: 65] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Peptoids that are oligomers of N-substituted glycines represent a class of peptide mimics with great potential in areas ranging from medicinal chemistry to biomaterial science. Controlling the equilibria between the cis and trans conformations of their backbone amides is the major hurdle to overcome for the construction of discrete folded structures, particularly for the development of all-cis polyproline type I (PPI) helices, as tools for modulating biological functions. The prominent role of backbone to side chain electronic interactions (n → π*) and side chains bulkiness in promoting cis-amides was essentially investigated with peptoid aromatic side chains, among which the chiral 1-naphthylethyl (1npe) group yielded the best results. We have explored for the first time the possibility to achieve similar performances with a sterically hindered α-chiral aliphatic side chain. Herein, we report on the synthesis and detailed conformational analysis of a series of (S)-N-(1-tert-butylethyl)glycine (Ns1tbe) peptoid homo-oligomers. The X-ray crystal structure of an Ns1tbe pentamer revealed an all-cis PPI helix, and the CD curves of the Ns1tbe oligomers also resemble those of PPI peptide helices. Interestingly, the CD data reported here are the first for any conformationally homogeneous helical peptoids containing only α-chiral aliphatic side chains. Finally we also synthesized and analyzed two mixed oligomers composed of NtBu and Ns1tbe monomers. Strikingly, the solid state structure of the mixed oligomer Ac-(tBu)2-(s1tbe)4-(tBu)2-COOtBu, the longest to be solved for any linear peptoid, revealed a PPI helix of great regularity despite the presence of only 50% of chiral side chain in the sequence.
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Affiliation(s)
- Olivier Roy
- Université Clermont Auvergne, CNRS, SIGMA Clermont, Institut de Chimie de Clermont-Ferrand , F-63000 Clermont-Ferrand, France
| | - Geoffrey Dumonteil
- Université Clermont Auvergne, CNRS, SIGMA Clermont, Institut de Chimie de Clermont-Ferrand , F-63000 Clermont-Ferrand, France
| | - Sophie Faure
- Université Clermont Auvergne, CNRS, SIGMA Clermont, Institut de Chimie de Clermont-Ferrand , F-63000 Clermont-Ferrand, France
| | - Laurent Jouffret
- Université Clermont Auvergne, CNRS, SIGMA Clermont, Institut de Chimie de Clermont-Ferrand , F-63000 Clermont-Ferrand, France
| | - Alexandre Kriznik
- Université de Lorraine , Fédération de Recherche CNRS 3209, Service Commun de Biophysique Interactions Moléculaires, and Laboratoire Ingénierie Moléculaire et Physiopathologie Articulaire, CNRS, UMR 7365, BP 20199, F-54505 Vandoeuvre les Nancy, France
| | - Claude Taillefumier
- Université Clermont Auvergne, CNRS, SIGMA Clermont, Institut de Chimie de Clermont-Ferrand , F-63000 Clermont-Ferrand, France
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47
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Galassi R, Simon OC, Burini A, Tosi G, Conti C, Graiff C, Martins NM, Guedes da Silva MFC, Pombeiro AJ, Martins LM. Copper(I) and copper(II) metallacycles as catalysts for microwave assisted selective oxidation of cyclohexane. Polyhedron 2017. [DOI: 10.1016/j.poly.2017.06.020] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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48
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Knight AS, Kulkarni RU, Zhou EY, Franke JM, Miller EW, Francis MB. A modular platform to develop peptoid-based selective fluorescent metal sensors. Chem Commun (Camb) 2017; 53:3477-3480. [PMID: 28272633 DOI: 10.1039/c7cc00931c] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Despite the reduction in industrial use of toxic heavy metals, there remain contaminated natural water sources across the world. Herein we present a modular platform for developing selective sensors for toxic metal ions using N-substituted glycine, or peptoid, oligomers coupled to a fluorophore. As a preliminary evaluation of this strategy, structures based on previously identified metal-binding peptoids were synthesized with terminal pyrene moieties. Both derivatives of this initial design demonstrated a turn-off response in the presence of various metal ions. A colorimetric screen was designed to identify a peptoid ligand that chelates Hg(ii). Multiple ligands were identified that were able to deplete Hg(ii) from a solution selectively in the presence of an excess of competing ions. The C-terminal fluoropeptoid derivatives demonstrated similar selectivity to their label-free counterparts. This strategy could be applied to develop sensors for many different metal ions of interest using a variety of fluorophores, leading to a panel of sensors for identifying various water source contaminants.
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Affiliation(s)
- Abigail S Knight
- Department of Chemistry, University of California, Berkeley, CA 94720, USA.
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49
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Carbó López M, Chavant PY, Molton F, Royal G, Blandin V. Chiral Nitroxide/Copper-Catalyzed Aerobic Oxidation of Alcohols: Atroposelective Oxidative Desymmetrization. ChemistrySelect 2017. [DOI: 10.1002/slct.201601993] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Marta Carbó López
- Univ. Grenoble Alpes; DCM UMR-5250; F-38000 Grenoble France
- CNRS; DCM UMR-5250; F-38000 Grenoble France
| | - Pierre Y. Chavant
- Univ. Grenoble Alpes; DCM UMR-5250; F-38000 Grenoble France
- CNRS; DCM UMR-5250; F-38000 Grenoble France
| | - Florian Molton
- Univ. Grenoble Alpes; DCM UMR-5250; F-38000 Grenoble France
- CNRS; DCM UMR-5250; F-38000 Grenoble France
| | - Guy Royal
- Univ. Grenoble Alpes; DCM UMR-5250; F-38000 Grenoble France
- CNRS; DCM UMR-5250; F-38000 Grenoble France
| | - Véronique Blandin
- Univ. Grenoble Alpes; DCM UMR-5250; F-38000 Grenoble France
- CNRS; DCM UMR-5250; F-38000 Grenoble France
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50
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Lu X, Wu N, Zhang B, Deng K. Copper(II) complexes of two TEMPO-functionalized polypyridyl ligands: structure and catalytic activity in alcohol oxidation. J COORD CHEM 2017. [DOI: 10.1080/00958972.2016.1272675] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Xiaoshuang Lu
- Key Laboratory of Catalysis and Materials Sciences of the State Ethnic Affairs Commission & Ministry of Education, College of Chemistry and Material Science, South-Central University for Nationalities, Wuhan, China
| | - Nini Wu
- Key Laboratory of Catalysis and Materials Sciences of the State Ethnic Affairs Commission & Ministry of Education, College of Chemistry and Material Science, South-Central University for Nationalities, Wuhan, China
| | - Bingguang Zhang
- Key Laboratory of Catalysis and Materials Sciences of the State Ethnic Affairs Commission & Ministry of Education, College of Chemistry and Material Science, South-Central University for Nationalities, Wuhan, China
| | - Kejian Deng
- Key Laboratory of Catalysis and Materials Sciences of the State Ethnic Affairs Commission & Ministry of Education, College of Chemistry and Material Science, South-Central University for Nationalities, Wuhan, China
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