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Zhang L, Xiao J, Xu X, Li K, Li D, Li J. Functionalized Chiral Materials for Use in Chiral Sensors. Crit Rev Anal Chem 2024:1-20. [PMID: 39012839 DOI: 10.1080/10408347.2024.2376233] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/18/2024]
Abstract
Chirality represents a fundamental attribute within living systems and is a pervasive phenomenon in the natural world. The identification and analysis of chiral materials within natural environments and biological systems hold paramount importance in clinical, chemical, and biological sciences. Within chiral analysis, there is a burgeoning focus on developing chiral sensors exhibiting exceptional selectivity, sensitivity, and stability, marking it as a forefront area of research. In the past decade (2013-2023), approximately 1990 papers concerning the application of various chiral materials in chiral sensors have been published. Biological materials and nanomaterials have important applications in the development of chiral sensors, which accounting for 26.67% and 45.24% of the material-related applications in these sensors, respectively; moreover, the development of chiral nanomaterials is closely related to the development of portable and stable chiral sensors. Natural chiral materials, utilized as selective recognition units, are combined with carriers characterized by good physical and chemical properties through functionalization to form various functional chiral materials, which improve the recognition efficiency of chiral sensors. In this article, from the perspective of biological materials, polymer materials, nanomaterials, and other functional chiral materials, the applications of chiral sensors are summarized and the research prospects of chiral sensors are discussed.
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Affiliation(s)
- Lianming Zhang
- Guangxi Key Laboratory of Electrochemical and Magnetochemical Functional Materials, College of Chemistry and Bioengineering, Guilin University of Technology, Guilin, China
| | - Jiaxi Xiao
- Guangxi Key Laboratory of Electrochemical and Magnetochemical Functional Materials, College of Chemistry and Bioengineering, Guilin University of Technology, Guilin, China
| | - Xuemei Xu
- Guangxi Key Laboratory of Electrochemical and Magnetochemical Functional Materials, College of Chemistry and Bioengineering, Guilin University of Technology, Guilin, China
| | - Kaiting Li
- Guangxi Key Laboratory of Electrochemical and Magnetochemical Functional Materials, College of Chemistry and Bioengineering, Guilin University of Technology, Guilin, China
| | - Dan Li
- Guangxi Key Laboratory of Electrochemical and Magnetochemical Functional Materials, College of Chemistry and Bioengineering, Guilin University of Technology, Guilin, China
| | - Jianping Li
- Guangxi Key Laboratory of Electrochemical and Magnetochemical Functional Materials, College of Chemistry and Bioengineering, Guilin University of Technology, Guilin, China
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2
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Yang X, Jiang W. Enantioselective Recognition of Functional Organic Molecules in Water by Biomimetic Macrocyclic Hosts. J Am Chem Soc 2024; 146:3900-3909. [PMID: 38294833 DOI: 10.1021/jacs.3c11492] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2024]
Abstract
Enantioselective recognition of functional organic molecules in water is routine in nature but remains a formidable challenge for synthetic hosts. Here, we reported two pairs of chiral naphthotubes with chiral centers located in the neighborhood of the inward-directing amide groups. These naphthotubes, with a chiral twisted cavity, show highly enantioselective recognition in water to a wide scope of organic molecules (90 chiral guests). The highest enantioselectivity of 34 was achieved with neotame. Small differences between all of the noncovalent interactions shielded in the hydrophobic cavity were revealed to be responsible for the enantioselective recognition in water, which is different from the traditional views. Moreover, these hosts can differentiate the analogues of aspartame using fluorescence spectroscopy. These chiral naphthotubes have made unprecedented achievements in enantioselective recognition, providing the basis for their applications in chiral analysis and separations.
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Affiliation(s)
- Xiran Yang
- Shenzhen Grubbs Institute, Guangdong Provincial Key Laboratory of Catalysis, and Department of Chemistry, Southern University of Science and Technology (SUSTech), Xueyuan Blvd 1088, Shenzhen 518055, China
| | - Wei Jiang
- Shenzhen Grubbs Institute, Guangdong Provincial Key Laboratory of Catalysis, and Department of Chemistry, Southern University of Science and Technology (SUSTech), Xueyuan Blvd 1088, Shenzhen 518055, China
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3
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Wang SM, Wang YF, Huang L, Zheng LS, Nian H, Zheng YT, Yao H, Jiang W, Wang X, Yang LP. Chiral recognition of neutral guests by chiral naphthotubes with a bis-thiourea endo-functionalized cavity. Nat Commun 2023; 14:5645. [PMID: 37704639 PMCID: PMC10499783 DOI: 10.1038/s41467-023-41390-8] [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: 05/05/2023] [Accepted: 09/04/2023] [Indexed: 09/15/2023] Open
Abstract
Developing chiral receptors with an endo-functionalized cavity for chiral recognition is of great significance in the field of molecular recognition. This study presents two pairs of chiral naphthotubes containing a bis-thiourea endo-functionalized cavity. Each chiral naphthotube has two homochiral centers which were fixed adjacent to the thiourea groups, causing the skeleton and thiourea groups to twist enantiomerically through chiral transfer. These chiral naphthotubes are highly effective at enantiomerically recognizing various neutral chiral molecules with an enantioselectivity up to 17.0. Furthermore, the mechanism of the chiral recognition has been revealed to be originated from differences in multiple non-covalent interactions. Various factors, such as the shape of cavities, substituents of guests, flexibility of host and binding modes are demonstrated to contribute to creating differences in the non-covalent interactions. Additionally, the driving force behind enantioselectivity is mainly attributed to enthalpic differences, and enthalpy -entropy compensation has also been observed to influence enantioselectivity.
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Affiliation(s)
- Song-Meng Wang
- Department of Chemistry, Southern University of Science and Technology, Xueyuan Blvd 1088, Shenzhen, 518055, China
| | - Yan-Fang Wang
- Department of Chemistry, Southern University of Science and Technology, Xueyuan Blvd 1088, Shenzhen, 518055, China
| | - Liping Huang
- Department of Chemistry, Southern University of Science and Technology, Xueyuan Blvd 1088, Shenzhen, 518055, China
| | - Li-Shuo Zheng
- Department of Chemistry, Southern University of Science and Technology, Xueyuan Blvd 1088, Shenzhen, 518055, China
| | - Hao Nian
- Department of Chemistry, Southern University of Science and Technology, Xueyuan Blvd 1088, Shenzhen, 518055, China
| | - Yu-Tao Zheng
- Department of Chemistry, Southern University of Science and Technology, Xueyuan Blvd 1088, Shenzhen, 518055, China
| | - Huan Yao
- School of Pharmaceutical Science, Hengyang Medical School, University of South China, Hengyang, Hunan, 421001, China
| | - Wei Jiang
- Department of Chemistry, Southern University of Science and Technology, Xueyuan Blvd 1088, Shenzhen, 518055, China.
| | - Xiaoping Wang
- Department of Chemistry, Southern University of Science and Technology, Xueyuan Blvd 1088, Shenzhen, 518055, China.
| | - Liu-Pan Yang
- School of Pharmaceutical Science, Hengyang Medical School, University of South China, Hengyang, Hunan, 421001, China.
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4
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Feng QY, Tong S, Vatsadze SZ, Wang MX. C-symmetric aza-crown ethers as chiral shift agents for amines and amino acid derivatives. Tetrahedron 2022. [DOI: 10.1016/j.tet.2022.133207] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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5
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Feng QY, Mao YQ, Wang MX, Tong S. Chiral Crown Ethers Accessed from Catalytic Enantioselective Desymmetrization Reactions. Org Lett 2022; 24:7107-7112. [PMID: 36148969 DOI: 10.1021/acs.orglett.2c02688] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A diversity of unprecedented chiral aza-crown ethers were synthesized straightforwardly from readily available and inexpensive aza-crown ethers. Catalyzed by a chiral phosphoric acid, desymmetrization of an array of symmetric N-arylated aza-crown ethers through tert-amino reaction proceeded efficiently under mild conditions to produce novel tetrahydroquinoline-fused aza-crown ethers in good to excellent yields with up to 96% ee. Our strategy opens a new route to functionalized chiral crown ethers.
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Affiliation(s)
- Qi-Yun Feng
- MOE Key Laboratory of Bioorganic Phosphorus and Chemical Biology, Department of Chemistry, Tsinghua University, Beijing 100084, China
| | - Yu-Qi Mao
- MOE Key Laboratory of Bioorganic Phosphorus and Chemical Biology, Department of Chemistry, Tsinghua University, Beijing 100084, China
| | - Mei-Xiang Wang
- MOE Key Laboratory of Bioorganic Phosphorus and Chemical Biology, Department of Chemistry, Tsinghua University, Beijing 100084, China
| | - Shuo Tong
- MOE Key Laboratory of Bioorganic Phosphorus and Chemical Biology, Department of Chemistry, Tsinghua University, Beijing 100084, China
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6
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Camphor: Synthesis, reactions and uses as a potential moiety in the development of complexes and organocatalysts. Tetrahedron 2022. [DOI: 10.1016/j.tet.2022.132913] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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7
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Han X, Li. P, Han Y, Chen C. Enantiomeric Water‐Soluble Octopus[3]arenes for Highly Enantioselective Recognition of Chiral Ammonium Salts in Water. Angew Chem Int Ed Engl 2022; 61:e202202527. [DOI: 10.1002/anie.202202527] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Indexed: 11/06/2022]
Affiliation(s)
- Xiao‐Ni Han
- Beijing National Laboratory for Molecular Sciences CAS Key Laboratory of Molecular Recognition and Function Institute of Chemistry Chinese Academy of Sciences Beijing 100190 China
- University of Chinese Academy of Sciences Beijing 100084 China
| | - Peng‐Fei Li.
- Beijing National Laboratory for Molecular Sciences CAS Key Laboratory of Molecular Recognition and Function Institute of Chemistry Chinese Academy of Sciences Beijing 100190 China
- Advanced Research Institute of Multidisciplinary Science School of Chemistry and Chemical Engineering Beijing Institute of Technology Beijing 100081 China
| | - Ying Han
- Beijing National Laboratory for Molecular Sciences CAS Key Laboratory of Molecular Recognition and Function Institute of Chemistry Chinese Academy of Sciences Beijing 100190 China
| | - Chuan‐Feng Chen
- Beijing National Laboratory for Molecular Sciences CAS Key Laboratory of Molecular Recognition and Function Institute of Chemistry Chinese Academy of Sciences Beijing 100190 China
- University of Chinese Academy of Sciences Beijing 100084 China
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8
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Jin Y, Chen Q, Zhang Y, Lee Y, Kang D, Kim Y, Kim SJ, Su Z, Huang H, Kim KM. Remarkable enantioselectivity enhancement of the extractors with nonaxial chirality in liquid-liquid extraction of underivatized amino acids by introducing t-butyl group. Chirality 2022; 34:999-1007. [PMID: 35417058 DOI: 10.1002/chir.23449] [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: 12/05/2021] [Revised: 03/24/2022] [Accepted: 03/31/2022] [Indexed: 11/11/2022]
Abstract
A class of carbonyl extractors, (R)-3, (R)-4, and (R)-5, with nonaxial chirality containing asymmetric carbons has been synthesized and studied for their efficiencies in enantioselective liquid-liquid extraction for underivatized amino acids. The bulky t-butyl ketone extractors, (R)-4 and (R)-5, showed the stereoselectivities ranging 5.4-9.4 of l/d ratio much better than those of the aldehyde extractor, (R)-3, ranging 2.4-5.2. The imine formation rates and yields of the t-butyl ketones were not significantly affected by their bulkiness and even in the absence of resonance-assisted hydrogen bond. This work confirms that a bulky t-butyl ketone can be a good choice in the development of an extractor not only with axial chirality but also with nonaxial chirality for the enantioselective extraction of unprotected amino acids.
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Affiliation(s)
- Yingji Jin
- Department of Chemistry and Nano Science, Ewha Womans University, Seoul, Korea
| | - Qian Chen
- Department of Chemistry and Nano Science, Ewha Womans University, Seoul, Korea
| | - Yan Zhang
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, China
| | - Yejeong Lee
- Department of Chemistry and Nano Science, Ewha Womans University, Seoul, Korea
| | - Dayoung Kang
- Department of Chemistry and Nano Science, Ewha Womans University, Seoul, Korea
| | - Youngmee Kim
- Department of Chemistry and Nano Science, Ewha Womans University, Seoul, Korea
| | - Sung-Jin Kim
- Department of Chemistry and Nano Science, Ewha Womans University, Seoul, Korea
| | - Zhishan Su
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, China
| | - Haofei Huang
- School of Chemistry and Chemical Engineering, Shandong University of Technology, Zibo, China
| | - Kwan Mook Kim
- Department of Chemistry and Nano Science, Ewha Womans University, Seoul, Korea
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9
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Mönkemöller LS, Schnurr M, Lewandowski B. Chiral Recognition of Amino Acid Esters in Organic Solvents Using a Glucose-Based Receptor. Molecules 2022; 27:2177. [PMID: 35408578 PMCID: PMC9000842 DOI: 10.3390/molecules27072177] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2022] [Revised: 03/23/2022] [Accepted: 03/26/2022] [Indexed: 11/16/2022] Open
Abstract
Due to the chemical and biological relevance of amino acids, efficient methods for the recognition and separation of their enantiomers are highly sought after. Chiral receptors based on extended molecular scaffolds are typically employed for this purpose. These receptors are often effective only in specific environments and towards a narrow scope of amino acid guests. Recently we reported a simple, glucose-based macrocycle capable of enantioselective binding of a broad range of amino acid methyl esters in water. Herein we demonstrate that the same receptor can be used for chiral recognition of amino acid esters in organic solvents. We show that the binding affinity and selectivity of the receptor are highly dependent on the coordinating strength of the solvent. An in-depth analysis of the receptor's conformation and its interactions with amino acid methyl esters allowed us to propose a binding mode of amino acids to the receptor in CDCl3. The binding modes in CDCl3 and D2O were then compared, highlighting the main interactions responsible for binding affinity and selectivity in each solvent. We envision that the insight provided by this study will facilitate the development of further amino acid receptors based on monosaccharides with improved binding affinities and both enantio- as well as chemoselectivities.
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Affiliation(s)
| | | | - Bartosz Lewandowski
- Laboratory of Organic Chemistry, ETH Zurich, Vladimir-Prelog-Weg 1-5, 8093 Zurich, Switzerland; (L.S.M.); (M.S.)
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10
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11
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Han X, Li. P, Han Y, Chen C. Enantiomeric Water‐Soluble Octopus[3]arenes for Highly Enantioselective Recognition of Chiral Ammonium Salts in Water. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202202527] [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)
- Xiao‐Ni Han
- Beijing National Laboratory for Molecular Sciences CAS Key Laboratory of Molecular Recognition and Function Institute of Chemistry Chinese Academy of Sciences Beijing 100190 China
- University of Chinese Academy of Sciences Beijing 100084 China
| | - Peng‐Fei Li.
- Beijing National Laboratory for Molecular Sciences CAS Key Laboratory of Molecular Recognition and Function Institute of Chemistry Chinese Academy of Sciences Beijing 100190 China
- Advanced Research Institute of Multidisciplinary Science School of Chemistry and Chemical Engineering Beijing Institute of Technology Beijing 100081 China
| | - Ying Han
- Beijing National Laboratory for Molecular Sciences CAS Key Laboratory of Molecular Recognition and Function Institute of Chemistry Chinese Academy of Sciences Beijing 100190 China
| | - Chuan‐Feng Chen
- Beijing National Laboratory for Molecular Sciences CAS Key Laboratory of Molecular Recognition and Function Institute of Chemistry Chinese Academy of Sciences Beijing 100190 China
- University of Chinese Academy of Sciences Beijing 100084 China
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12
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Heterocyclic Crown Ethers with Potential Biological and Pharmacological Properties: From Synthesis to Applications. APPLIED SCIENCES-BASEL 2022. [DOI: 10.3390/app12031102] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Cyclic organic compounds with several ether linkages in their structure are of much concern in our daily life applications. Crown ethers (CEs) are generally heterocyclic and extremely versatile compounds exhibiting higher binding affinity. In recent years, due to their unique structure, crown ethers are widely used in drug delivery, solvent extraction, cosmetics manufacturing, material studies, catalysis, separation, and organic synthesis. Beyond their conventional place in chemistry, this review article summarizes the synthesis, biological, and potential pharmacological activities of CEs. We have emphasized the prospects of CEs as anticancer, anti-inflammatory, antibacterial, and antifungal agents and have explored their amyloid genesis inhibitory activity, electrochemical, and potential metric sensing properties. The central feature of these compounds is their ability to form selective and stable complexes with various organic and inorganic cations. Therefore, CEs can be used in gas chromatography as the stationary phase and are also valuable for cation chromatographic to determine and separate alkali and alkaline-earth cations.
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13
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Yuan C, Jia W, Yu Z, Li Y, Zi M, Yuan LM, Cui Y. Are Highly Stable Covalent Organic Frameworks the Key to Universal Chiral Stationary Phases for Liquid and Gas Chromatographic Separations? J Am Chem Soc 2022; 144:891-900. [PMID: 34989226 DOI: 10.1021/jacs.1c11051] [Citation(s) in RCA: 59] [Impact Index Per Article: 29.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
High-performance liquid chromatography (HPLC) and gas chromatography (GC) over chiral stationary phases (CSPs) represent the most popular and highly applicable technology in the field of chiral separation, but there are currently no CSPs that can be used for both liquid and gas chromatography simultaneously. We demonstrate here that two olefin-linked covalent organic frameworks (COFs) featuring chiral crown ether groups can be general CSPs for extensive separation not only in GC but also in normal-phase and reversed-phase HPLC. Both COFs have the same 2D layered porous structure but channels of different sizes and display high stability under different chemical environments including water, organic solvents, acids, and bases. Chiral crown ethers are periodically aligned within the COF channels, allowing for enantioselective recognition of guest molecules through intermolecular interactions. The COF-packed HPLC and GC columns show excellent complementarity and each affords high resolution, selectivity, and durability for the separation of a wide range of racemic compounds, including amino acids, esters, lactones, amides, alcohols, aldehydes, ketones, and drugs. The resolution performances are comparable to and the versatility is superior to those of the most widely used commercial chiral columns, showing promises for practical applications. This work thus advances COFs with high stability as potential universal CSPs for chromatography that are otherwise hard or impossible to produce.
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Affiliation(s)
- Chen Yuan
- School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules and State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
| | - Wenyan Jia
- Department of Chemistry, Yunnan Normal University, Kunming 650500, P. R. China
| | - Ziyun Yu
- Department of Chemistry, Yunnan Normal University, Kunming 650500, P. R. China
| | - Yanan Li
- Department of Chemistry, Yunnan Normal University, Kunming 650500, P. R. China
| | - Min Zi
- Department of Chemistry, Yunnan Normal University, Kunming 650500, P. R. China
| | - Li-Ming Yuan
- Department of Chemistry, Yunnan Normal University, Kunming 650500, P. R. China
| | - Yong Cui
- School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules and State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
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Ma H, Luo D, Zhao Q, Liu R, Zhang Z, Hou X, Sun X, Wang Y. Crown ether and crown ether/K+ complex assisted DOSY NMR: A versatile tool for positional isomers identification in aqueous solution. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2021.117884] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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15
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Mozaffari Majd M, Farrokhpour H, Najafi Chermahini A, Dabbagh H. A comparative theoretical study of the chiral discrimination of phenylalanine enantiomers by the cyclic peptides with different sizes as discriminating agents: A DFT study. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2021.130904] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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16
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Recognition of Chiral Carboxylates by Synthetic Receptors. Molecules 2021; 26:molecules26216417. [PMID: 34770825 PMCID: PMC8587759 DOI: 10.3390/molecules26216417] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2021] [Revised: 10/19/2021] [Accepted: 10/21/2021] [Indexed: 11/17/2022] Open
Abstract
Recognition of anionic species plays a fundamental role in many essential chemical, biological, and environmental processes. Numerous monographs and review papers on molecular recognition of anions by synthetic receptors reflect the continuing and growing interest in this area of supramolecular chemistry. However, despite the enormous progress made over the last 20 years in the design of these molecules, the design of receptors for chiral anions is much less developed. Chiral recognition is one of the most subtle types of selectivity, and it requires very precise spatial organization of the receptor framework. At the same time, this phenomenon commonly occurs in many processes present in nature, often being their fundamental step. For these reasons, research directed toward understanding the chiral anion recognition phenomenon may lead to the identification of structural patterns that enable increasingly efficient receptor design. In this review, we present the recent progress made in the area of synthetic receptors for biologically relevant chiral carboxylates.
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Paul R, Mitra A, Paul S. A computational approach on the stereoselective binding of peptides from aqueous medium with endo-functionalized molecular tubes. Phys Chem Chem Phys 2021; 23:22703-22717. [PMID: 34605508 DOI: 10.1039/d1cp02288a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
The need to obtain enantiomerically pure isomers of amino acids and peptides is often realized in the field of biology and in the pharmaceutical industry. Research is underway to devise simple methods for the chiral resolution of amino acids from their racemic mixtures. Inspired by this objective, in our present work, we have computationally shown the possibility of chiral separation of the enantiomeric pairs of two model peptides, namely, (D,L)-aspargine and (D,L)-phenylalanine, in the presence of water. For this purpose, we have used two synthetic supramolecular receptors named host-1a and host-1b, respectively. Molecular dynamics simulations and quantum chemical methods are employed to analyze the structural features and the energy aspects involved in the separation process. The information obtained at the molecular level helps us gain better insights into the key interactions that operate to produce such enantioselectivity. We have also investigated the dynamics and changes in the water structure in the vicinity of the host molecules, both in the presence and absence of the model peptides. The D- and L-isomers of the same peptide undergo complexation with a particular host molecule registering a difference of more than 1.5 kcal mol-1 (obtained from PMF and MM-PBSA analyses) in their respective energies. This indicates that the chiral separation of the peptides with the help of these endo-fuctionalized molecular tube receptors may be energetically feasible. The connection between the peptide stereochemistry and its interaction with the endo-functionalized hosts would be instrumental in designing novel segregation techniques that can be further extended to separate larger model peptides or proteins.
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Affiliation(s)
- Rabindranath Paul
- Department of Chemistry, Indian Institute of Technology, Guwahati, Assam 781039, India.
| | - Aritra Mitra
- Department of Chemistry, Indian Institute of Technology, Guwahati, Assam 781039, India.
| | - Sandip Paul
- Department of Chemistry, Indian Institute of Technology, Guwahati, Assam 781039, India.
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Synthesis and characterization of a novel and reusable Fe3O4@THAM-CH2CH2-SCH2CO2H magnetic nanocatalyst for highly efficient preparation of xanthenes and 3-aminoisoxazoles in green conditions. RESEARCH ON CHEMICAL INTERMEDIATES 2021. [DOI: 10.1007/s11164-021-04558-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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19
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Cui X, Zhang FQ, Li X, Hou JJ, Li H, Zhang XM. Polyoxotitanate Molecular Cage Featuring Four Types of Ethylenediamines: Formation Mechanism Insight from Host-Guest Interaction and Crystallographic Study. Inorg Chem 2021; 60:9174-9180. [PMID: 34081454 DOI: 10.1021/acs.inorgchem.1c01189] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Titanium-oxide or polyoxotitanate clusters are a new type of inorganic host materials that can encapsulate inorganic molecules or ions. We report herein a (NH4)4(enH2)[Ti18O27(PhCOO)24(en)9] molecular cage (Ti18) that encapsulates an entire organic ethylenediamine (en) ion. A thorough investigation has revealed the extraordinary versatility of en. Besides being a guest cation, it also functions as chelating and bridging ligand. It balances the charge of the negative Ti18 cage and facilitates the deprotonation of benzoic acid at the early stage of the reaction as well. DFT calculation and a derivative of Ti18 with open sites at its equatorial position shed further light on the formation mechanism. Ti18 strongly absorbs visible light as a result of en coordination, and it exhibits superior photocatalytic activity compared to anatase TiO2.
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Affiliation(s)
- Xiaoqin Cui
- Institute of Crystalline Materials, Shanxi University, Taiyuan 030006, Shanxi, China
| | - Fu-Qiang Zhang
- School of Chemistry and Material Science, Shanxi Normal University, Linfen 041004, Shanxi, China
| | - Xin Li
- Institute of Crystalline Materials, Shanxi University, Taiyuan 030006, Shanxi, China
| | - Juan-Juan Hou
- School of Chemistry and Material Science, Shanxi Normal University, Linfen 041004, Shanxi, China
| | - Huan Li
- Institute of Crystalline Materials, Shanxi University, Taiyuan 030006, Shanxi, China
| | - Xian-Ming Zhang
- Institute of Crystalline Materials, Shanxi University, Taiyuan 030006, Shanxi, China.,School of Chemistry and Material Science, Shanxi Normal University, Linfen 041004, Shanxi, China
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20
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Golcs Á, Ádám BÁ, Vezse P, Huszthy P, Tóth T. Synthesis and Spectrophotometric Studies of 9‐Substituted‐4,5‐dimethoxyacridine Multifunctionalizable Fluorescent Dyes and Their Macrocyclic Derivatives. European J Org Chem 2021. [DOI: 10.1002/ejoc.202100291] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Ádám Golcs
- Department of Organic Chemistry and Technology Budapest University of Technology and Economics Szent Gellért tér 4 1111 Budapest Hungary
| | - Bálint Árpád Ádám
- Department of Organic Chemistry and Technology Budapest University of Technology and Economics Szent Gellért tér 4 1111 Budapest Hungary
| | - Panna Vezse
- Department of Organic Chemistry and Technology Budapest University of Technology and Economics Szent Gellért tér 4 1111 Budapest Hungary
| | - Péter Huszthy
- Department of Organic Chemistry and Technology Budapest University of Technology and Economics Szent Gellért tér 4 1111 Budapest Hungary
| | - Tünde Tóth
- Department of Organic Chemistry and Technology Budapest University of Technology and Economics Szent Gellért tér 4 1111 Budapest Hungary
- Institute for Energy Security and Environmental Safety Centre for Energy Research Konkoly-Thege Miklós út 29–33 1121 Budapest Hungary
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21
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Shahamirian M, Azami SM. Strong intramolecular hydrogen bonding in confined amino acids. J Mol Graph Model 2021; 106:107913. [PMID: 33892298 DOI: 10.1016/j.jmgm.2021.107913] [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: 01/04/2021] [Revised: 03/26/2021] [Accepted: 03/26/2021] [Indexed: 12/07/2022]
Abstract
Intramolecular hydrogen bonding is evaluated in three different amino acids encapsulated in C60 fullerene in the context of electron density analysis. While conventional intramolecular hydrogen bonding in isolated amino acids are dominated by electrostatic character, it is shown that strong intramolecular hydrogen bonding can be formed in confined amino acids so that in two cases covalent intramolecular hydrogen bonding is appeared in the confined species. Also, results show that zwitterionic amino acids are stable in confined state, where no implicit or explicit solvation is applied. Covalent character for intramolecular hydrogen bonding in amino acids have not yet been reported.
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Affiliation(s)
- M Shahamirian
- Department of Chemistry, Faculty of Science, Sarvestan Branch, Islamic Azad University, Sarvestan, 73451-173, Iran.
| | - S M Azami
- Department of Chemistry, Yasouj University, Yasouj, 75918-74934, Iran
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22
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Abstract
ConspectusMacrocycles have had a profound influence on the establishment of supramolecular chemistry because of their abundant molecular recognition and self-assembly characteristics. The design of new macrocyclic receptors that can be tailored by synthesis to display new and exotic properties is an important research objective for chemists and materials scientists. Rigid macrocycles with π-conjugated aromatic units, in contrast with flexible ones, tend to possess large interior and exterior π-surfaces in addition to persistent shapes. These features not only endow these macrocycles with a wide range of host-guest properties but also render them ideal building blocks for constructing a diverse variety of supramolecular architectures. The incorporation of π-conjugated units into macrocycles also imbues them with a wealth of optical, electronic, and magnetic properties, resulting in their broad application in materials science and molecular nanotechnology.Recently, we have designed and synthesized a new class of macrocycles, namely, molecular triangles, which have rigid structures with triangular geometries. They consist of three chiral trans-1,2-cyclohexano apexes and three aromatic tetracarboxylic diimide linkers, such as pyromellitic diimide, naphthalene diimide, and perylene diimide. Benefiting from the availability of facile synthetic protocols, the geometries and properties of these rigid molecular triangles can be altered at will. By combining these tetracarboxylic diimide linkers, we have been able to synthesize both molecular equilateral and isosceles triangles. During the past few years, we have conducted research in a systematic manner on the structural features and self-assembly characteristics of these molecular triangles. The following points are worthy of note regarding these molecular triangles: (i) They possess shape-persistent inner cavities of a highly electron-deficient nature. These features endow them with the ability to complex with anions and electron-rich molecules, forming supramolecular nanotubes and two-dimensional tilings. (ii) Those with intrinsic chirality are able to self-assemble into solid-state nonhelical or single-handed helical superstructures, inducing selective chirality transfer from the macrocycles to their crystalline supramolecular assemblies. (iii) The triangular arrangement of aromatic tetracarboxylic diimide linkers contributes to through-space electron delocalization encompassing the entire macrocycle, conferring exotic electronic and spin properties. To date, the family of molecular triangles has exhibited a range of physicochemical properties, such as anion recognition, chiral assembly, supramolecular gelation, energy storage, solid-state luminescence, and nonlinear optical response.In this Account, we summarize our recent progress in research into these molecular triangles. We present an overview of their design and synthesis, as well as a general summary of their structural features. Thereafter, we discuss state-of-the-art developments in relation to their molecular recognition properties and their assembly characteristics. In addition, we highlight the potential applications of these molecular triangles and their complexes with a range of solvents and electron-rich molecules. Finally, we speculate on further structural modifications and application-oriented explorations based on this class of molecular triangles.
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Affiliation(s)
- Yu Wang
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - Huang Wu
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - J. Fraser Stoddart
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
- School of Chemistry, University of New South Wales, Sydney, NSW 2052, Australia
- Stoddart Institute of Molecular Science, Department of Chemistry, Zhejiang University, Hangzhou 310027, China
- ZJU-Hangzhou Global Scientific and Technological Innovation Center, Hangzhou 311215, China
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23
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Dominique P, Schnurr M, Lewandowski B. Chiral recognition of amino-acid esters by a glucose-derived macrocyclic receptor. Chem Commun (Camb) 2021; 57:3476-3479. [PMID: 33688892 DOI: 10.1039/d1cc00878a] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
We report a glucose-based crown ether capable of chiral recognition of a wide range of amino-acid methyl esters in aqueous environments. The enantioselectivities towards amino-acids with extended hydrophobic side chains displayed by the glucose-derived macrocycle are among the highest observed for small molecule synthetic receptors to date.
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Affiliation(s)
- Pit Dominique
- Laboratory of Organic Chemistry, ETH Zürich, Vladimir-Prelog-Weg 1-5, Zürich 8093, Switzerland.
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24
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Seibel J, Tessari Z, Amabilino DB, De Feyter S. Chirality from scratch: enantioselective adsorption in geometrically controlled lateral nanoconfinement. Chem Commun (Camb) 2021; 57:61-64. [PMID: 33289742 DOI: 10.1039/d0cc06845d] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Chiral symmetry breaking in molecular adsorption at the solid/liquid interface by lateral geometric nanoconfinement is demonstrated. The chiral nanoconfinement is created at the interface of achiral covalently modified highly-oriented pyrolytic graphite and a racemate by in situ scanning probe lithography. Enantioselective adsorption of chiral molecules is achieved by adjusting the relative orientation between the nanoconfining walls and substrate symmetry direction.
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Affiliation(s)
- Johannes Seibel
- Department of Chemistry, Division of Molecular Imaging and Photonics, KU Leuven - University of Leuven, Celestijnenlaan 200F, B-3001 Leuven, Belgium.
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25
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Yesypenko OA, Osipova AO, Tribrat OO, Kravchenko SO, Usachov OM, Dyakonenko VV, Ryabitskii AB, Pirozhenko VV, Shishkina SV, Rozhenko AB, Kalchenko VI. Synthesis and enantiorecognition properties of stereoisomeres of inherently chiral propyloxy-octyloxy-calix[4]arene acetic acids. Tetrahedron 2021. [DOI: 10.1016/j.tet.2020.131894] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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26
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Szemenyei B, Malmosi M, Pál D, Baranyai P, Drahos L, Móczár I, Huszthy P. When crown ethers finally click: novel, click-assembled, fluorescent enantiopure pyridino-crown ether-based chemosensors – and an N-2-aryl-1,2,3-triazole containing one. NEW J CHEM 2021. [DOI: 10.1039/d1nj04173h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Fluorescent chemosensors containing differently connected 1,2,3-triazole units for enantiomeric recognition studies of chiral protonated primary amines and amino acid esters.
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Affiliation(s)
- Balázs Szemenyei
- Department of Organic Chemistry and Technology, Budapest University of Technology and Economics, PO Box 91, H-1521 Budapest, Hungary
| | - Mira Malmosi
- Department of Organic Chemistry and Technology, Budapest University of Technology and Economics, PO Box 91, H-1521 Budapest, Hungary
| | - Dávid Pál
- Department of Organic Chemistry and Technology, Budapest University of Technology and Economics, PO Box 91, H-1521 Budapest, Hungary
| | - Péter Baranyai
- Wigner Research Centre for Physics, PO Box 49, H-1525 Budapest, Hungary
| | - László Drahos
- Institute of Organic Chemistry, Research Centre for Natural Sciences, PO Box 286, H-1519 Budapest, Hungary
| | - Ildikó Móczár
- Department of Organic Chemistry and Technology, Budapest University of Technology and Economics, PO Box 91, H-1521 Budapest, Hungary
| | - Péter Huszthy
- Department of Organic Chemistry and Technology, Budapest University of Technology and Economics, PO Box 91, H-1521 Budapest, Hungary
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27
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Xiao W, Mo Y, Guo J, Su Z, Dong S, Feng X. Catalytic enantioselective synthesis of macrodiolides and their application in chiral recognition. Chem Sci 2020; 12:2940-2947. [PMID: 34164061 PMCID: PMC8179366 DOI: 10.1039/d0sc06162j] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
Abstract
New types of C2-symmetric chiral macrodiolides are readily obtained via chiral N,N′-dioxide-scandium(iii) complex-promoted asymmetric tandem Friedel–Crafts alkylation/intermolecular macrolactonization of ortho-quinone methides with C3-substituted indoles. This protocol provides an array of enantioenriched macrodiolides with 16, 18 or 20-membered rings in moderate to good yields with high diastereoselectivities and excellent enantioselectivities through adjusting the length of the tether at the C3 position of indoles. Density functional theory calculations indicate that the formation of macrocycles is more favorable than that of 9-membered-ring lactones in terms of kinetics and thermodynamics. The potential utility of these intriguing chiral macrodiolide molecules is demonstrated in the enantiomeric recognition of aminols and chemical recognition of metal ions. An asymmetric tandem Friedel–Crafts alkylation/intermolecular macrolactonization of ortho-quinone methides with C3-substituted indoles was achieved by using a chiral N,N′-dioxide-scandium(iii) complex.![]()
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Affiliation(s)
- Wanlong Xiao
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University Chengdu 610064 China
| | - Yuhao Mo
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University Chengdu 610064 China
| | - Jing Guo
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University Chengdu 610064 China
| | - Zhishan Su
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University Chengdu 610064 China
| | - Shunxi Dong
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University Chengdu 610064 China
| | - Xiaoming Feng
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University Chengdu 610064 China
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28
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Yuan C, Fu S, Yang K, Hou B, Liu Y, Jiang J, Cui Y. Crystalline C-C and C═C Bond-Linked Chiral Covalent Organic Frameworks. J Am Chem Soc 2020; 143:369-381. [PMID: 33356183 DOI: 10.1021/jacs.0c11050] [Citation(s) in RCA: 81] [Impact Index Per Article: 20.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
While crystalline covalent organic frameworks (COFs) linked by C-C bonds are highly desired in synthetic chemistry, it remains a formidable challenge to synthesize. Efforts to generate C-C single bonds in COFs via de novo synthesis usually afford amorphous structures rather than crystalline phases. We demonstrate here that C-C single bond-based COFs can be prepared by direct reduction of C═C bond-linked frameworks via crystal-to-crystal transformation. By Knoevenagel polycondensation of chiral tetrabenzaldehyde of dibinaphthyl-22-crown-6 with 1,4-phenylenediacetonitrile or 4,4'-biphenyldiacetonitrile, two olefin-linked chiral COFs with 2D layered tetragonal structure are prepared. Reduction of olefin linkages of the as-prepared CCOFs produces two C-C single bond linked frameworks, which retains high crystallinity and porosity as well as high chemical stability in both strong acids and bases. The quantitative reduction is confirmed by Fourier transform infrared and cross-polarization magic angle spinning 13C NMR spectroscopy. Compared to the pristine structures, the reduced CCOFs display blue-shifted emission with enhanced quantum yields and fluorescence lifetimes, while the parent CCOFs exhibit higher enantioselectivity than the reduced analogs when be used as fluorescent sensors to detect chiral amino alcohols via supramolecular interactions with the built-in crown ether moieties. This work provides an attractive strategy for making chemically stable functionalized COFs with new linkages that are otherwise hard to produce.
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Affiliation(s)
- Chen Yuan
- School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules and State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
| | - Shiguo Fu
- School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules and State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
| | - Kuiwei Yang
- Department of Chemical and Biomolecular Engineering, National University of Singapore, Singapore 117585, Singapore
| | - Bang Hou
- School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules and State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
| | - Yan Liu
- School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules and State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
| | - Jianwen Jiang
- Department of Chemical and Biomolecular Engineering, National University of Singapore, Singapore 117585, Singapore
| | - Yong Cui
- School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules and State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
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29
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Crown ethers as shift reagents in peptide epimer differentiation –conclusions from examination of ac-(H)FRW-NH2 petide sequences. ACTA ACUST UNITED AC 2020. [DOI: 10.1007/s12127-020-00271-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
AbstractCrown ethers with different ring sizes and substituents (18-crown-6, dibenzo-18-crown-6, dicyclohexano-18-crown-6, a chiral tetracarboxylic acid-18-crown-6 ether, dibenzo-21-crown-7, and dibenzo-30-crown-10) were evaluated as shift reagents to differentiate epimeric model peptides (tri-and tetrapeptides) using ion mobility mass spectrometry (IM-MS). The stable associates of peptide epimers with crown ethers were detected and examined using traveling-wave ion mobility time-of-flight mass spectrometer (Synapt G2-S HDMS) equipped with an electrospray ion source. The overall decrease of the epimer separation upon crown ether complexation was observed. The increase of the effectiveness of the microsolvation of a basic moiety - guanidine or ammonium group in the peptide had no or little effect on the epimer discrimination. Any increase of the epimer separation, which referred to the specific association mode between crown substituents and a given peptide sequence, was drastically reduced for the longer peptide sequence (tetrapeptide). The obtained results suggest that the application of the crown ethers as shift reagents in ion mobility mass spectrometry is limited to the formation of complexes differing in stoichiometry rather than it refers to a specific coordination mode between a crown ether and a peptide molecule.
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30
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Oprea A, Weimar U. Gas sensors based on mass-sensitive transducers. Part 2: Improving the sensors towards practical application. Anal Bioanal Chem 2020; 412:6707-6776. [PMID: 32737549 PMCID: PMC7496080 DOI: 10.1007/s00216-020-02627-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2018] [Revised: 02/24/2020] [Accepted: 03/27/2020] [Indexed: 01/03/2023]
Abstract
Within the framework outlined in the first part of the review, the second part addresses attempts to increase receptor material performance through the use of sensor systems and chemometric methods, in conjunction with receptor preparation methods and sensor-specific tasks. Conclusions are then drawn, and development perspectives for gravimetric sensors are discussed.
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Affiliation(s)
- Alexandru Oprea
- Institute of Physical and Theoretical Chemistry, Eberhard Karls University, Tübingen, Germany.
- Center for Light-Matter Interaction, Sensors & Analytics, Eberhard Karls University, Auf der Morgenstelle 15, 72076, Tübingen, Germany.
| | - Udo Weimar
- Institute of Physical and Theoretical Chemistry, Eberhard Karls University, Tübingen, Germany
- Center for Light-Matter Interaction, Sensors & Analytics, Eberhard Karls University, Auf der Morgenstelle 15, 72076, Tübingen, Germany
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31
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Pikus G, Tyszka-Gumkowska A, Jurczak J. The influence of high pressure on static combinatorial libraries of chiral BINOL-based macrocyclic amides. Tetrahedron 2020. [DOI: 10.1016/j.tet.2020.131438] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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32
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John ME, Karnik AV. Chiral benzimidazole derived bis‐phenyl triazoles as chiroptical sensors for iodide and chiral amines. J Heterocycl Chem 2020. [DOI: 10.1002/jhet.3993] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Marina E. John
- Department of ChemistryUniversity of Mumbai Mumbai India
| | - Anil V. Karnik
- Department of ChemistryUniversity of Mumbai Mumbai India
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33
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Golcs Á, Ádám BÁ, Horváth V, Tóth T, Huszthy P. Synthesis, Molecular Recognition Study and Liquid Membrane-Based Applications of Highly Lipophilic Enantiopure Acridino-Crown Ethers. Molecules 2020; 25:E2571. [PMID: 32486509 PMCID: PMC7321232 DOI: 10.3390/molecules25112571] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2020] [Revised: 05/27/2020] [Accepted: 05/28/2020] [Indexed: 11/17/2022] Open
Abstract
New highly lipophilic enantiopure crown ethers containing a heterocyclic unit have been synthesized. Phase transport, UV-Vis- and fluorescence spectrophotometric investigations as well as electrochemical studies on the complexation of the new macrocycles with several amine and amino acid derivatives were also carried out. Achiral amines were used for studying the structural preference of the new macrocycles. Among the studied structural features of the guest molecules, the intermolecular π-π interaction showed the most significant effect on complexation, which made the aralkylamine-type compounds the most preferable guest molecules. The studied liquid membrane-based applications and photophysical investigations showed appreciable enantiomeric recognition toward some aralkylamine model compounds with homochiral preferences. New crown ether derivatives (R,R)-2 and (S,S)-2 were successfully applied as enantioselective carrier and sensor molecules.
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Affiliation(s)
- Ádám Golcs
- Department of Organic Chemistry and Technology, Budapest University of Technology and Economics, Szent Gellért tér 4., H-1111 Budapest, Hungary; (B.Á.Á.); (T.T.); (P.H.)
| | - Bálint Árpád Ádám
- Department of Organic Chemistry and Technology, Budapest University of Technology and Economics, Szent Gellért tér 4., H-1111 Budapest, Hungary; (B.Á.Á.); (T.T.); (P.H.)
| | - Viola Horváth
- MTA-BME Computation Driven Chemistry Research Group, Szent Gellért tér 4., H-1521 Budapest, Hungary;
| | - Tünde Tóth
- Department of Organic Chemistry and Technology, Budapest University of Technology and Economics, Szent Gellért tér 4., H-1111 Budapest, Hungary; (B.Á.Á.); (T.T.); (P.H.)
- Institute for Energy Security and Environmental Safety, Centre for Energy Research, Konkoly-Thege Miklós út 29-33., H-1121 Budapest, Hungary
| | - Péter Huszthy
- Department of Organic Chemistry and Technology, Budapest University of Technology and Economics, Szent Gellért tér 4., H-1111 Budapest, Hungary; (B.Á.Á.); (T.T.); (P.H.)
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34
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Chen X, Hu N, Wei H, Wang H. Chiral Fluorescent Recognition by Naphthalimide. J Fluoresc 2020; 30:679-685. [PMID: 32367338 DOI: 10.1007/s10895-020-02539-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2020] [Accepted: 04/13/2020] [Indexed: 11/28/2022]
Abstract
Chirality plays a very important role in medicine, biochemistry and other fields. Because the enantiomers of chiral drugs often show different pharmacology activity, metabolism, and toxicity, therefore, the recognition of chiral molecules is very important, and has become a hot spot and frontier of modern chemical research. In this paper, a new method for recognizing chiral molecular based on naphthalimide dye(NA)⊂cucurbit[5]uril(CB[7]) assembly is developed. NA as guest can be combined with the host CB[7] to form a 1:1 NA⊂CB[7] assembly. Furthermore, this assembly was used as a fluorescent probe to recognize D/L-phenylalanine and D/L-phenylalaninol by fluorescence titration. When D-phenylalanine or D-phenylalaninol was added to NA⊂CB[7] assembly, the fluorescent intensity of assembly was partially quenched, but when L-phenylalanine or L-phenylalaninol was added to NA⊂CB[7], the fluorescence intensity of the assembly almost unchanged. Herein, chiral recognition platform based on achiral NA⊂achiral CB[7] was constructed.
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Affiliation(s)
- Xuanming Chen
- College of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing, China
| | - Na Hu
- College of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing, China
| | - Huifeng Wei
- College of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing, China
| | - Haibo Wang
- College of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing, China.
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35
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Sasaki Y, Kojima S, Hamedpour V, Kubota R, Takizawa SY, Yoshikawa I, Houjou H, Kubo Y, Minami T. Accurate chiral pattern recognition for amines from just a single chemosensor. Chem Sci 2020. [DOI: 10.1039/d0sc00194e] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
The current work proposes a novel method for accurate pattern recognition of (mono- and di-) amines and determination of enantiomeric excess (ee) using molecular self-assembly.
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Affiliation(s)
- Yui Sasaki
- Institute of Industrial Science
- The University of Tokyo
- Tokyo
- Japan
| | - Soya Kojima
- Department of Applied Chemistry
- Graduate School of Urban Environmental Sciences
- Tokyo Metropolitan University
- Tokyo 192-0397
- Japan
| | - Vahid Hamedpour
- Institute of Industrial Science
- The University of Tokyo
- Tokyo
- Japan
| | - Riku Kubota
- Institute of Industrial Science
- The University of Tokyo
- Tokyo
- Japan
| | - Shin-ya Takizawa
- Department of Basic Science
- Graduate School of Arts and Sciences
- The University of Tokyo
- Tokyo
- Japan
| | - Isao Yoshikawa
- Institute of Industrial Science
- The University of Tokyo
- Tokyo
- Japan
| | - Hirohiko Houjou
- Institute of Industrial Science
- The University of Tokyo
- Tokyo
- Japan
| | - Yuji Kubo
- Department of Applied Chemistry
- Graduate School of Urban Environmental Sciences
- Tokyo Metropolitan University
- Tokyo 192-0397
- Japan
| | - Tsuyoshi Minami
- Institute of Industrial Science
- The University of Tokyo
- Tokyo
- Japan
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36
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Haynes IW, Wu G, Haque MA, Li H, Do TD. Conformational Preference of Macrocycles Investigated by Ion-Mobility Mass Spectrometry and Distance Geometry Modeling. Anal Chem 2019; 91:13439-13447. [DOI: 10.1021/acs.analchem.9b02100] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Isaac W. Haynes
- Department of Chemistry, University of Tennessee, Knoxville, Tennessee 37996, United States
| | - Guangcheng Wu
- Department of Chemistry, Zhejiang University, Hangzhou 310027, China
| | - Md. Ashraful Haque
- Department of Chemistry, University of Tennessee, Knoxville, Tennessee 37996, United States
| | - Hao Li
- Department of Chemistry, Zhejiang University, Hangzhou 310027, China
| | - Thanh D. Do
- Department of Chemistry, University of Tennessee, Knoxville, Tennessee 37996, United States
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37
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Omichi M, Yamashita S, Okura Y, Ikutomo R, Ueki Y, Seko N, Kakuchi R. Surface Engineering of Fluoropolymer Films via the Attachment of Crown Ether Derivatives Based on the Combination of Radiation-Induced Graft Polymerization and the Kabachnik-Fields Reaction. Polymers (Basel) 2019; 11:E1337. [PMID: 31409049 PMCID: PMC6723282 DOI: 10.3390/polym11081337] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2019] [Revised: 07/26/2019] [Accepted: 08/07/2019] [Indexed: 11/17/2022] Open
Abstract
In this manuscript, we present the successful attachment of crown ether moieties onto fluoropolymer surfaces, via the combination of radiation-induced graft polymerization and a subsequent surface Kabachnik-Fields three-component reaction. The obtained crown ether-tethered fluoropolymer films exhibited an ammonium cation capturing ability, owing to the host-guest interactions (i.e., hydrogen bonding) between the surface-anchored crown ethers and the guest ammonium cations.
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Affiliation(s)
- Masaaki Omichi
- Department of Advanced Functional Materials Research, Takasaki Advanced Radiation Research Institute, Quantum Beam Science Research Directorate, National Institutes for Quantum and Radiological Science and Technology (QST) 1233 Watanuki-machi, Takasaki 370-1292, Gunma, Japan.
| | - Shuhei Yamashita
- Department of Advanced Functional Materials Research, Takasaki Advanced Radiation Research Institute, Quantum Beam Science Research Directorate, National Institutes for Quantum and Radiological Science and Technology (QST) 1233 Watanuki-machi, Takasaki 370-1292, Gunma, Japan
- Division of Molecular Science, Graduate School of Science and Technology, Gunma University, 1-5-1 Tenjin-cho, Kiryu 376-8515, Gunma, Japan
| | - Yamato Okura
- Division of Molecular Science, Graduate School of Science and Technology, Gunma University, 1-5-1 Tenjin-cho, Kiryu 376-8515, Gunma, Japan
| | - Ryuta Ikutomo
- Division of Molecular Science, Graduate School of Science and Technology, Gunma University, 1-5-1 Tenjin-cho, Kiryu 376-8515, Gunma, Japan
| | - Yuji Ueki
- Department of Advanced Functional Materials Research, Takasaki Advanced Radiation Research Institute, Quantum Beam Science Research Directorate, National Institutes for Quantum and Radiological Science and Technology (QST) 1233 Watanuki-machi, Takasaki 370-1292, Gunma, Japan
| | - Noriaki Seko
- Department of Advanced Functional Materials Research, Takasaki Advanced Radiation Research Institute, Quantum Beam Science Research Directorate, National Institutes for Quantum and Radiological Science and Technology (QST) 1233 Watanuki-machi, Takasaki 370-1292, Gunma, Japan
| | - Ryohei Kakuchi
- Division of Molecular Science, Graduate School of Science and Technology, Gunma University, 1-5-1 Tenjin-cho, Kiryu 376-8515, Gunma, Japan.
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38
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Castro-Fernández S, Álvarez-García J, García-Río L, Silva-López C, Cid MM. Double Protonation of a cis-Bipyridoallenophane Detected via Chiral-Sensing Switch: The Role of Ion Pairs. Org Lett 2019; 21:5898-5902. [DOI: 10.1021/acs.orglett.9b02024] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Silvia Castro-Fernández
- Departamento de Química Orgánica, Edificio Ciencias Experimentais, Campus Lagoas-Marcosende, Vigo E-36310, Spain
| | - Jonathan Álvarez-García
- Departamento de Química Orgánica, Edificio Ciencias Experimentais, Campus Lagoas-Marcosende, Vigo E-36310, Spain
| | - Luís García-Río
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CIQUS), Departamento de Química Física, Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain
| | - Carlos Silva-López
- Departamento de Química Orgánica, Edificio Ciencias Experimentais, Campus Lagoas-Marcosende, Vigo E-36310, Spain
| | - María Magdalena Cid
- Departamento de Química Orgánica, Edificio Ciencias Experimentais, Campus Lagoas-Marcosende, Vigo E-36310, Spain
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39
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Yu Q, Lu W, Ding Z, Wei M, Dai Z. Synthesis of novel chiral fluorescent sensors and their application in enantioselective discrimination of chiral carboxylic acids. JOURNAL OF CHEMICAL RESEARCH 2019. [DOI: 10.1177/1747519819867619] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Novel chiral fluorescent sensors are synthesized from a dibromide containing a tetraphenylethylene moiety and enantiomerically pure amino alcohols and an amine. The sensors are applied for the chiral recognition of a wide range of chiral carboxylic acids and related derivatives.
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Affiliation(s)
- Qiuhan Yu
- Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, Nanjing, P.R. China
| | - Weiwen Lu
- Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, Nanjing, P.R. China
| | - Zhiqiang Ding
- Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, Nanjing, P.R. China
| | - Min Wei
- Institute of Botany, Jiangsu Province and Chinese Academy of Sciences, Nanjing, P.R. China
| | - Zhenya Dai
- Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, Nanjing, P.R. China
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40
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Resolution and Racemization of a Planar-Chiral A1/A2-Disubstituted Pillar[5]arene. Symmetry (Basel) 2019. [DOI: 10.3390/sym11060773] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
Abstract
Butoxycarbonyl (Boc)-protected pillar[4]arene[1]-diaminobenzene (BP) was synthesized by introducing the Boc protection onto the A1/A2 positions of BP. The oxygen-through-annulus rotation was partially inhibited because of the presence of the middle-sized Boc substituents. We succeeded in isolating the enantiopure RP (RP, RP, RP, RP, and RP)- and SP (SP, SP, SP, SP, and SP)-BP, and studied their circular dichroism (CD) spectral properties. As the Boc substituent is not large enough to completely prevent the flip of the benzene units, enantiopure BP-f1 underwent racemization in solution. It is found that the racemization kinetics is a function of the solvent and temperature employed. The chirality of the BP-f1 could be maintained in n-hexane and CH2Cl2 for a long period at room temperature, whereas increasing the temperature or using solvents that cannot enter into the cavity of BP-f1 accelerated the racemization of BP-f1. The racemization kinetics and the thermodynamic parameters of racemization were studied in several different organic solvents.
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41
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Lee W, Bang E, Yun JH, Paik MJ, Lee W. Enantiodiscrimination Using a Chiral Crown Ether as a Chiral Solvating Agent Using NMR Spectroscopy. Nat Prod Commun 2019. [DOI: 10.1177/1934578x19849191] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
For enantiomer separation of a variety of chiral compounds, a number of chiral selectors have been developed and applied. Among these chiral selectors are chiral crown ethers, a class of synthetic polyether molecules that bind protonated chiral primary amines with high selectivity. This article focuses on enantiodiscrimination using (18-crown-6)-2,3,11,12-tetracarboxylic acid as a crown ether-type chiral solvating agent for nuclear magnetic resonance spectroscopic method in several chirotechnologies.
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Affiliation(s)
- Wonjae Lee
- College of Pharmacy, Chosun University, Gwangju, Korea
| | - Eunjung Bang
- Western Seoul Center, Korea Basic Science Institute, Seoul, Korea
| | - Ji-Hye Yun
- Department of Biochemistry, College of Life Science & Biotechnology, Yonsei University, Seoul, Korea
| | - Man-Jeong Paik
- College of Pharmacy, Sunchon National University, Jeonnam, Korea
| | - Weontae Lee
- Department of Biochemistry, College of Life Science & Biotechnology, Yonsei University, Seoul, Korea
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42
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Pál D, Móczár I, Szemenyei B, Marczona D, Kocsis I, Prikler G, Vezse P, Baranyai P, Huszthy P. Pyridino-18-crown-6 ether type chemosensors containing a benzothiazole fluorophore unit: Synthesis and enantiomeric recognition studies. Tetrahedron 2019. [DOI: 10.1016/j.tet.2019.04.024] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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43
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Tyszka A, Pikus G, Dąbrowa K, Jurczak J. Late-Stage Functionalization of (R)-BINOL-Based Diazacoronands and Their Chiral Recognition of α-Phenylethylamine Hydrochlorides. J Org Chem 2019; 84:6502-6507. [DOI: 10.1021/acs.joc.9b00630] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Affiliation(s)
- Agata Tyszka
- Institute of Organic Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, Warsaw 01-224, Poland
| | - Grzegorz Pikus
- Institute of Organic Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, Warsaw 01-224, Poland
| | - Kajetan Dąbrowa
- Institute of Organic Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, Warsaw 01-224, Poland
| | - Janusz Jurczak
- Institute of Organic Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, Warsaw 01-224, Poland
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44
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Szabó-Szentjóbi H, Bagi P, Müller J, Balogh GT, Tóth T, Huszthy P. Synthesis and enantioselective transport studies of both enantiomers of new chiral proton-ionizable crown ethers containing a diarylphosphinic acid unit. Tetrahedron 2019. [DOI: 10.1016/j.tet.2019.01.039] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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45
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Effect of ligand and bridge substitution on chiral recognition of 1-phenylethylammonium cation by an anionic binuclear Ni(II) complex. Inorganica Chim Acta 2019. [DOI: 10.1016/j.ica.2018.10.065] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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46
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Peterson A, Kaasik M, Metsala A, Järving I, Adamson J, Kanger T. Tunable chiral triazole-based halogen bond donors: assessment of donor strength in solution with nitrogen-containing acceptors. RSC Adv 2019; 9:11718-11721. [PMID: 35517004 PMCID: PMC9063393 DOI: 10.1039/c9ra01692a] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2019] [Accepted: 04/04/2019] [Indexed: 12/15/2022] Open
Abstract
Various structurally modified iodo-triazole based XB donors were screened with quinuclidine, displaying Ka values as high as 1.1 × 104 M−1.
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Affiliation(s)
- Anna Peterson
- Chemical Physics Laboratory
- National Institute of Chemical Physics and Biophysics
- Tallinn
- Estonia
- Department of Chemistry and Biotechnology
| | - Mikk Kaasik
- Department of Chemistry and Biotechnology
- School of Science
- Tallinn University of Technology
- 12618 Tallinn
- Estonia
| | - Andrus Metsala
- Department of Chemistry and Biotechnology
- School of Science
- Tallinn University of Technology
- 12618 Tallinn
- Estonia
| | - Ivar Järving
- Department of Chemistry and Biotechnology
- School of Science
- Tallinn University of Technology
- 12618 Tallinn
- Estonia
| | - Jasper Adamson
- Chemical Physics Laboratory
- National Institute of Chemical Physics and Biophysics
- Tallinn
- Estonia
| | - Tõnis Kanger
- Department of Chemistry and Biotechnology
- School of Science
- Tallinn University of Technology
- 12618 Tallinn
- Estonia
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47
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Fonari MS, Pluzhnik-Gladyr SM, Kamalov GL, Kravtsov VK. Cocrystallization of Chiral N7,N16-bis (S-1-Phenylethyl)-1,4,10,13-Tetraoxo-7,16-Diazacyclooctadecane-7,16-Dicarboxamide with Hydrochlorides of Methyl Ethers of Leucine and Valine Enantiomers. J STRUCT CHEM+ 2019. [DOI: 10.1134/s0022476619010207] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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48
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López JC, Pérez C, Blanco S, Shubert VA, Temelso B, Shields GC, Schnell M. Water induces the same crown shapes as Li+ or Na+ in 15-crown-5 ether: a broadband rotational study. Phys Chem Chem Phys 2019; 21:2875-2881. [DOI: 10.1039/c8cp05552a] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Complexation with water reduces the structural landscape of 15-crown-5 ether to the two forms observed for Li+ or Na+ complexes.
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Affiliation(s)
- Juan C. López
- Deutsches Elektronen-Synchrotron (DESY)
- Hamburg
- Germany
- Departamento de Química Física y Química Inorgánica
- Facultad de Ciencias
| | - Cristóbal Pérez
- Deutsches Elektronen-Synchrotron (DESY)
- Hamburg
- Germany
- Facultad de Ciencia y Tecnología
- Universidad del País Vasco (UPV-EHU)
| | - Susana Blanco
- Departamento de Química Física y Química Inorgánica
- Facultad de Ciencias
- Universidad de Valladolid
- Valladolid
- Spain
| | | | - Berhane Temelso
- Provost's Office and Department of Chemistry
- Furman University
- Greenville
- USA
| | - George C. Shields
- Provost's Office and Department of Chemistry
- Furman University
- Greenville
- USA
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49
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Móczár I, Huszthy P. Optically active crown ether-based fluorescent sensor molecules: A mini-review. Chirality 2018; 31:97-109. [PMID: 30592777 DOI: 10.1002/chir.23031] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2018] [Revised: 10/11/2018] [Accepted: 10/16/2018] [Indexed: 12/14/2022]
Abstract
This mini-review focuses on fluorescent optically active crown ethers (polymeric derivatives are not included) reported in the literature (according to our knowledge), of which enantiomeric recognition ability, and in some cases, also inorganic cation complexation properties, were investigated by the sensitive and versatile fluorescence spectroscopy. These crown ether-based chemosensors contain various fluorophore signaling units such as binaphthyl, anthracene, pyrene, tryptophan, benzimidazole, terpyridine, acridine, phenazine, acridone, BODIPY, and another conjugated aromatic one.
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Affiliation(s)
- Ildikó Móczár
- Department of Organic Chemistry and Technology, Budapest University of Technology and Economics, Budapest, Hungary
| | - Péter Huszthy
- Department of Organic Chemistry and Technology, Budapest University of Technology and Economics, Budapest, Hungary
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50
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Synthesis of 3-aminoisoxazolmethylnaphthols via one-pot three-component reaction under solvent-free conditions. RESEARCH ON CHEMICAL INTERMEDIATES 2018. [DOI: 10.1007/s11164-018-3566-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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