1
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Yao C, Gole B, Bui AT, Kauffmann B, Huc I, McClenaghan ND, Ferrand Y. Photon-gated foldaxane assembly/disassembly. Chem Commun (Camb) 2024; 60:8415-8418. [PMID: 39028296 DOI: 10.1039/d4cc03218g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/20/2024]
Abstract
Integrating multiple anthracene motifs into aromatic oligoamide sequences gives rise to photoactive foldamers that can sequester a molecular thread forming helix-on-axle assemblies. Photoirradiation is shown to distort the helical host and drive dissociation of the supramolecular assembly and thread liberation as signalled by a photonic output, while thermal reversion regenerates the assembly.
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Affiliation(s)
- Chenhao Yao
- Univ. Bordeaux, CNRS, Bordeaux INP, CBMN (UMR 5248), 2 rue Escarpit, 33600 Pessac, France.
| | - Bappaditya Gole
- Univ. Bordeaux, CNRS, Bordeaux INP, CBMN (UMR 5248), 2 rue Escarpit, 33600 Pessac, France.
| | - Anh Thy Bui
- Univ. Bordeaux, CNRS, Institut des Sciences Moléculaires (UMR5255), 351 cours de la Libération, 33405 Talence cedex, France.
| | - Brice Kauffmann
- Univ. Bordeaux, CNRS, INSERM, Institut Européen de Chimie Biologie (UAR3033/US001), 2 rue Escarpit, 33600 Pessac, France
| | - Ivan Huc
- Department of Pharmacy Ludwig-Maximilians-Universität München Butenandtstr. 5-13, 81377 Munich, Germany
| | - Nathan D McClenaghan
- Univ. Bordeaux, CNRS, Institut des Sciences Moléculaires (UMR5255), 351 cours de la Libération, 33405 Talence cedex, France.
| | - Yann Ferrand
- Univ. Bordeaux, CNRS, Bordeaux INP, CBMN (UMR 5248), 2 rue Escarpit, 33600 Pessac, France.
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2
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Talukdar D, Gole B. Foldamer-Based Mechanoresponsive Materials: Molecular Nanoarchitectonics to Advanced Functions. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024. [PMID: 39051976 DOI: 10.1021/acs.langmuir.4c01252] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/27/2024]
Abstract
Artificial molecules that respond to external stimuli such as light, heat, chemical signals, and mechanical force have garnered significant interest due to their tunable functions, variable optical properties, and mechanical responses. Particularly, mechanoresponsive materials featuring molecules that respond to mechanical stress or show force-induced optical changes have been intriguing due to their extraordinary functions. Despite the promising potential of many such materials reported in the past, practical applications have remained limited, primarily because their functions often depend on irreversible covalent bond rupture. Foldamers, oligomers that fold into well-defined secondary structures, offer an alternative class of mechanoactive motifs. These molecules can reversibly sustain mechanical stress and efficiently dissipate energy by transitioning between folded and unfolded states. This review focuses on the emerging properties of foldamer-based mechanoresponsive materials. We begin by highlighting the mechanical responses of foldamers in their molecular form, which have been primarily investigated using single-molecule force spectroscopy and other analytical methods. Following this, we provide a detailed survey of the current trends in foldamer-appended polymers, emphasizing their emerging mechanical and mechanochromic properties. Subsequently, we present an overview of the state-of-the-art advancements in foldamer-appended polymers, showcasing significant reports in this field. This review covers some of the most recent advances in this direction and draws a perspective for further development.
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Affiliation(s)
- Dhrubajyoti Talukdar
- Biomimetic Supramolecular Chemistry Laboratory, Department of Chemistry, School of Natural Sciences, Shiv Nadar Institution of Eminence Deemed to be University, Greater Noida, Uttar Pradesh 201314, India
| | - Bappaditya Gole
- Biomimetic Supramolecular Chemistry Laboratory, Department of Chemistry, School of Natural Sciences, Shiv Nadar Institution of Eminence Deemed to be University, Greater Noida, Uttar Pradesh 201314, India
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3
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Wang S, Wicher B, Douat C, Maurizot V, Huc I. Domain Swapping in Abiotic Foldamers. Angew Chem Int Ed Engl 2024; 63:e202405091. [PMID: 38661252 DOI: 10.1002/anie.202405091] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2024] [Revised: 04/22/2024] [Accepted: 04/24/2024] [Indexed: 04/26/2024]
Abstract
Foldamer sequences that adopt tertiary helix-turn-helix folds mediated by helix-helix hydrogen bonding in organic solvents have been previously reported. In an attempt to create genuine abiotic quaternary structures, i.e. assemblies of tertiary structures, new sequences were prepared that possess additional hydrogen bond donors at positions that may promote an association between the tertiary folds. However, a solid state structure and extensive solution state investigations by Nuclear Magnetic Resonance (NMR) and Circular Dichroism (CD) show that, instead of forming a quaternary structure, the tertiary folds assemble into stable domain-swapped dimer motifs. Domain swapping entails a complete reorganization of the arrays of hydrogen bonds and changes in relative helix orientation and handedness that can all be rationalized.
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Affiliation(s)
- Shuhe Wang
- Department of Pharmacy, Ludwig-Maximilians-Universität in Munich, Butenandtstr. 5-13, 81377, München, Germany
| | - Barbara Wicher
- Department of Chemical Technology of Drugs, Poznan University of Medical Sciences, 3 Rokietnicka St., 60-806, Poznan, Poland
| | - Céline Douat
- Department of Pharmacy, Ludwig-Maximilians-Universität in Munich, Butenandtstr. 5-13, 81377, München, Germany
| | - Victor Maurizot
- CBMN (UMR 5248), Univ. Bordeaux, CNRS, Bordeaux INP, 2, Rue Robert Escarpit, 33600, Pessac, France
| | - Ivan Huc
- Department of Pharmacy, Ludwig-Maximilians-Universität in Munich, Butenandtstr. 5-13, 81377, München, Germany
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4
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Liu CZ, Zhang C, Li CG, Chen HB, Yang W, Li ZY, Hu ZY, Xu L, Zhai B, Li ZT. Benzoselenadiazole-Functionalized H-Bonded Arylamide Foldamers: Solvent-Responsive Properties and Helix Self-Assembly Directed by Chalcogen Bonding in Solid State. Chemistry 2024; 30:e202401150. [PMID: 38639722 DOI: 10.1002/chem.202401150] [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: 03/22/2024] [Revised: 04/17/2024] [Accepted: 04/18/2024] [Indexed: 04/20/2024]
Abstract
In this study, a series of H-bonded arylamide foldamers bearing benzoselenadiazole ends with solvent-responsive properties have been synthesized. In dichloromethane or dimethyl sulfoxide solvents, the molecules exhibit meniscus or linear structures, respectively, which can be attributed to the unique intramolecular hydrogen bonding behavior evidenced by 1D 1H NMR and 2D NOESY spectra. UV-vis spectroscopy experiments show that the absorption wavelength of H-bonded arylamide foldamers are significantly red-shifted due to the presence of benzoselenadiazole group. In addition, the crystal structures reveal that effective intermolecular dual Se ⋅ ⋅ ⋅ N interactions between benzoselenadiazole groups induce further assembly of the monomers. Remarkably, supramolecular linear and double helices structures are constructed under the synergistic induction of intramolecular hydrogen bonding and intermolecular chalcogen bonding. Additionally, 2D DOSY diffusion spectra and theoretical modelling based on density functional theory (DFT) are performed to explore the persistence of intermolecular Se ⋅ ⋅ ⋅ N interactions beyond the crystalline state.
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Affiliation(s)
- Chuan-Zhi Liu
- Engineering Research Centre for Optoelectronic Functional Materials of Henan Province, College of Chemistry and Chemical Engineering, Shangqiu Normal University, 55 Pingyuan middle Road, Shangqiu, Henan, 476000, China
| | - Chi Zhang
- Engineering Research Centre for Optoelectronic Functional Materials of Henan Province, College of Chemistry and Chemical Engineering, Shangqiu Normal University, 55 Pingyuan middle Road, Shangqiu, Henan, 476000, China
| | - Chang-Gen Li
- Engineering Research Centre for Optoelectronic Functional Materials of Henan Province, College of Chemistry and Chemical Engineering, Shangqiu Normal University, 55 Pingyuan middle Road, Shangqiu, Henan, 476000, China
| | - Hui-Bin Chen
- Engineering Research Centre for Optoelectronic Functional Materials of Henan Province, College of Chemistry and Chemical Engineering, Shangqiu Normal University, 55 Pingyuan middle Road, Shangqiu, Henan, 476000, China
| | - Wen Yang
- Engineering Research Centre for Optoelectronic Functional Materials of Henan Province, College of Chemistry and Chemical Engineering, Shangqiu Normal University, 55 Pingyuan middle Road, Shangqiu, Henan, 476000, China
| | - Zhong-Yi Li
- Engineering Research Centre for Optoelectronic Functional Materials of Henan Province, College of Chemistry and Chemical Engineering, Shangqiu Normal University, 55 Pingyuan middle Road, Shangqiu, Henan, 476000, China
| | - Zhi-Yuan Hu
- Engineering Research Centre for Optoelectronic Functional Materials of Henan Province, College of Chemistry and Chemical Engineering, Shangqiu Normal University, 55 Pingyuan middle Road, Shangqiu, Henan, 476000, China
| | - Liang Xu
- School of Chemistry and Chemical Engineering/State Key Laboratory Incubation Base for Green Processing of Chemical Engineering, Shihezi University, 221 Beisi Road, Shihezi, 832003, China
| | - Bin Zhai
- Engineering Research Centre for Optoelectronic Functional Materials of Henan Province, College of Chemistry and Chemical Engineering, Shangqiu Normal University, 55 Pingyuan middle Road, Shangqiu, Henan, 476000, China
| | - Zhan-Ting Li
- Key Laboratory of Synthetic and Self-Assembly Chemistry for Organic Functional Molecules, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai, 200032, China
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5
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John EA, Riel AMS, Wieske LHE, Ray D, Decato DA, Boller M, Takacs Z, Erdélyi M, Bryantsev VS, Berryman OB. Taming Molecular Folding: Anion-Templated Foldamers with Tunable Quaternary Structures. J Am Chem Soc 2024. [PMID: 38842125 DOI: 10.1021/jacs.3c14820] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/07/2024]
Abstract
Higher-order foldamers represent a unique class of supramolecules at the forefront of molecular design. Herein we control quaternary folding using a novel approach that combines halogen bonding (XBing) and hydrogen bonding (HBing). We present the first anion-templated double helices induced by halogen bonds (XBs) and stabilized by "hydrogen bond enhanced halogen bonds" (HBeXBs). Our findings demonstrate that the number and orientation of hydrogen bond (HB) and XB donors significantly affect the quaternary structure and guest selectivity of two similar oligomers. This research offers new design elements to engineer foldamers and tailor their quaternary structure for specific guest binding.
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Affiliation(s)
- Eric A John
- Department of Chemistry and Biochemistry, University of Montana, Missoula, Montana 59812, United States
| | - Asia Marie S Riel
- Department of Chemistry and Biochemistry, University of Montana, Missoula, Montana 59812, United States
| | - Lianne H E Wieske
- Department of Chemistry─BMC, Organic Chemistry, Uppsala University, Husargatan 3, 752 37 Uppsala, Sweden
| | - Debmalya Ray
- Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Daniel A Decato
- Department of Chemistry and Biochemistry, University of Montana, Missoula, Montana 59812, United States
| | - Madeleine Boller
- Department of Chemistry and Biochemistry, University of Montana, Missoula, Montana 59812, United States
| | - Zoltan Takacs
- Swedish NMR Center, University of Gothenburg, Gothenburg SE-405 30, Sweden
| | - Máté Erdélyi
- Department of Chemistry─BMC, Organic Chemistry, Uppsala University, Husargatan 3, 752 37 Uppsala, Sweden
| | - Vyacheslav S Bryantsev
- Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Orion B Berryman
- Department of Chemistry and Biochemistry, University of Montana, Missoula, Montana 59812, United States
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6
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Liu CZ, Zhang C, Li ZY, Chen J, Wang T, Zhang XK, Yan M, Zhai B. Multiple non-covalent-interaction-directed supramolecular double helices: the orthogonality of hydrogen, halogen and chalcogen bonding. Chem Commun (Camb) 2024; 60:6063-6066. [PMID: 38780308 DOI: 10.1039/d4cc01472c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/25/2024]
Abstract
In this study, a benzoselenadiazole- and pyridine-bifunctionalized hydrogen-bonded arylamide foldamer was synthesized. A co-crystallization experiment with 1,4-diiodotetrafluorobenzene showed that a new type of supramolecular double helices, which were induced by three orthogonal interactions, namely, three-center hydrogen bonding (O⋯H⋯O), I⋯N halogen bonding and Se⋯N chalcogen bonding, have been constructed in the solid state. This work presents a novel instance of multiple non-covalent interactions that work together to construct supramolecular architectures.
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Affiliation(s)
- Chuan-Zhi Liu
- Engineering Research Centre for Optoelectronic Functional Materials of Henan Province, College of Chemistry and Chemical Engineering, Shangqiu Normal University, Shangqiu, Henan 476000, China.
| | - Chi Zhang
- Engineering Research Centre for Optoelectronic Functional Materials of Henan Province, College of Chemistry and Chemical Engineering, Shangqiu Normal University, Shangqiu, Henan 476000, China.
| | - Zhong-Yi Li
- Engineering Research Centre for Optoelectronic Functional Materials of Henan Province, College of Chemistry and Chemical Engineering, Shangqiu Normal University, Shangqiu, Henan 476000, China.
| | - Jiale Chen
- Engineering Research Centre for Optoelectronic Functional Materials of Henan Province, College of Chemistry and Chemical Engineering, Shangqiu Normal University, Shangqiu, Henan 476000, China.
| | - Tonglu Wang
- Engineering Research Centre for Optoelectronic Functional Materials of Henan Province, College of Chemistry and Chemical Engineering, Shangqiu Normal University, Shangqiu, Henan 476000, China.
| | - Xiang-Kun Zhang
- Engineering Research Centre for Optoelectronic Functional Materials of Henan Province, College of Chemistry and Chemical Engineering, Shangqiu Normal University, Shangqiu, Henan 476000, China.
| | - Meng Yan
- School of Chemistry and Chemical Engineering, Henan University of Technology, Zhengzhou, 450001, China
| | - Bin Zhai
- Engineering Research Centre for Optoelectronic Functional Materials of Henan Province, College of Chemistry and Chemical Engineering, Shangqiu Normal University, Shangqiu, Henan 476000, China.
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7
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Yu L, Li D, Ma C, Kauffmann B, Liao S, Gan Q. Redox-Regulated and Guest-Driven Transformations of Aromatic Oligoamide Foldamers in Advanced Structures. J Am Chem Soc 2024; 146:12907-12912. [PMID: 38691420 DOI: 10.1021/jacs.4c03275] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/03/2024]
Abstract
In this study, we demonstrate that an aromatic oligoamide sequence assembles into a trimeric helix-turn-helix architecture with a disulfide linkage, and upon cleavage of this linkage, it reconstructs into an antiparallel double helix. The antiparallel double helix is accessible to encapsulate a diacid guest within its cavity, forming a 2:1 host-guest complex. In contrast, hydrogen-bonding interactions between the trimeric-assembled structure and guests induce a conformational shift in the trimeric helix, resulting in a cross-shaped double-helix complex at a 2:2 host-guest ratio. Interconversions between the trimeric helix and the antiparallel double helix, along with their respective host-guest complexes, can be initiated through thiol/disulfide redox-mediated regulation.
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Affiliation(s)
- Lu Yu
- Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Luoyu Road No. 1037, 430074, Wuhan, China
| | - Dongyao Li
- School of Biomedical Sciences and Engineering, Guangzhou International Campus, South China University of Technology, 777 Xingye Avenue East, Panyu District, 511442, Guangzhou, China
| | - Chunmiao Ma
- Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Luoyu Road No. 1037, 430074, Wuhan, China
| | - Brice Kauffmann
- Université de Bordeaux, CNRS, INSERM, Institut Européen de Chimie Biologie (UMS3033/US001), 2 Rue Escarpit, 33600, Pessac, France
| | - Sibei Liao
- Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Luoyu Road No. 1037, 430074, Wuhan, China
| | - Quan Gan
- Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Luoyu Road No. 1037, 430074, Wuhan, China
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8
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Wayment LJ, Teat SJ, Huang S, Chen H, Zhang W. Dynamic Entwined Topology in Helical Covalent Polymers Dictated by Competing Supramolecular Interactions. Angew Chem Int Ed Engl 2024; 63:e202403599. [PMID: 38444217 DOI: 10.1002/anie.202403599] [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: 02/21/2024] [Revised: 03/02/2024] [Accepted: 03/04/2024] [Indexed: 03/07/2024]
Abstract
Naturally occurring polymeric structures often consist of 1D polymer chains intricately folded and entwined through non-covalent bonds, adopting precise topologies crucial for their functionality. The exploration of crystalline 1D polymers through dynamic covalent chemistry (DCvC) and supramolecular interactions represents a novel approach for developing crystalline polymers. This study shows that sub-angstrom differences in the counter-ion size can lead to various helical covalent polymer (HCP) topologies, including a novel metal-coordination HCP (m-HCP) motif. Single-crystal X-ray diffraction (SCXRD) analysis of HCP-Na revealed that double helical pairs are formed by sodium ions coordinating to spiroborate linkages to form rectangular pores. The double helices are interpenetrated by the unreacted diols coordinating sodium ions. The reticulation of the m-HCP structure was demonstrated by the successful synthesis of HCP-K. Finally, ion-exchange studies were conducted to show the interconversion between HCP structures. This research illustrates how seemingly simple modifications, such as changes in counter-ion size, can significantly influence the polymer topology and determine which supramolecular interactions dominate the crystal lattice.
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Affiliation(s)
- Lacey J Wayment
- Department of Chemistry, University of Colorado Boulder, Boulder, CO-80309, USA
| | - Simon J Teat
- Advanced Light Source, Lawrence Berkeley National Laboratory, Department of Chemistry, University of California, Berkeley, Berkeley, CA-94720, USA
| | - Shaofeng Huang
- Department of Chemistry, University of Colorado Boulder, Boulder, CO-80309, USA
| | - Hongxuan Chen
- Department of Chemistry, University of Colorado Boulder, Boulder, CO-80309, USA
| | - Wei Zhang
- Department of Chemistry, University of Colorado Boulder, Boulder, CO-80309, USA
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9
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Zhao Y, Yan X, Jiang YB. Supramolecular helix of an oligomeric azapeptide building block containing four β-turn structures. Chem Commun (Camb) 2024; 60:4648-4651. [PMID: 38497782 DOI: 10.1039/d3cc04859d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/19/2024]
Abstract
Oligomers of benzoylalanine-based amidothioureas containing four β-turn structures spaced by meta-substituted benzenes were shown to undergo assembly in dilute CH3CN solution into supramolecular helices of enhanced supramolecular helicity, whereas those spaced by para-substituted benzene spacer(s) or those spaced by meta-substituted benzenes but with one or two β-turns exhibit a substantially decreased tendency of assembling.
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Affiliation(s)
- Yingdan Zhao
- Department of Chemistry, College of Chemistry and Chemical Engineering, the MOE Key Laboratory of Spectrochemical Analysis and Instrumentation, Xiamen University, Xiamen 361005, China.
| | - Xiaosheng Yan
- Department of Chemistry, College of Chemistry and Chemical Engineering, the MOE Key Laboratory of Spectrochemical Analysis and Instrumentation, Xiamen University, Xiamen 361005, China.
- Fujian Provincial Key Laboratory of Innovative Drug Target Research and State Key Laboratory of Cellular Stress Biology, School of Pharmaceutical Sciences, Xiamen University, Xiamen, Fujian 361102, China
| | - Yun-Bao Jiang
- Department of Chemistry, College of Chemistry and Chemical Engineering, the MOE Key Laboratory of Spectrochemical Analysis and Instrumentation, Xiamen University, Xiamen 361005, China.
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10
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Naamneh MS, Momic T, Klazas M, Grosche J, Eble JA, Marcinkiewicz C, Khazanov N, Senderowitz H, Hoffman A, Gilon C, Katzhendler J, Lazarovici P. Structure-Activity Relationship of Synthetic Linear KTS-Peptides Containing Meta-Aminobenzoic Acid as Antagonists of α1β1 Integrin with Anti-Angiogenic and Melanoma Anti-Tumor Activities. Pharmaceuticals (Basel) 2024; 17:549. [PMID: 38794120 PMCID: PMC11124490 DOI: 10.3390/ph17050549] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2024] [Revised: 04/19/2024] [Accepted: 04/22/2024] [Indexed: 05/26/2024] Open
Abstract
To develop peptide drugs targeting integrin receptors, synthetic peptide ligands endowed with well-defined selective binding motifs are necessary. The snake venom KTS-containing disintegrins, which selectively block collagen α1β1 integrin, were used as lead compounds for the synthesis and structure-activity relationship of a series of linear peptides containing the KTS-pharmacophore and alternating natural amino acids and 3-aminobenzoic acid (MABA). To ensure a better stiffness and metabolic stability, one, two and three MABA residues, were introduced around the KTS pharmacophore motif. Molecular dynamics simulations determined that the solution conformation of MABA peptide 4 is more compact, underwent larger conformational changes until convergence, and spent most of the time in a single cluster. The peptides' binding affinity has been characterized by an enzyme linked immunosorbent assay in which the most potent peptide 4 inhibited with IC50 of 324 ± 8 µM and 550 ± 45 µM the binding of GST-α1-A domain to collagen IV fragment CB3, and the cell adhesion to collagen IV using α1-overexpressor cells, respectively. Docking studies and MM-GBSA calculations confirmed that peptide 4 binds a smaller region of the integrin near the collagen-binding site and penetrated deeper into the binding site near Trp1. Peptide 4 inhibited tube formation by endothelial cell migration in the Matrigel angiogenesis in vitro assay. Peptide 4 was acutely tolerated by mice, showed stability in human serum, decreased tumor volume and angiogenesis, and significantly increased the survival of mice injected with B16 melanoma cells. These findings propose that MABA-peptide 4 can further serve as an α1β1-integrin antagonist lead compound for further drug optimization in angiogenesis and cancer therapy.
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Affiliation(s)
- Majdi Saleem Naamneh
- School of Pharmacy Institute for Drug Research, Faculty of Medicine, The Hebrew University of Jerusalem, Jerusalem 9112002, Israel; (M.S.N.); (M.K.); (A.H.)
| | - Tatjana Momic
- School of Pharmacy Institute for Drug Research, Faculty of Medicine, The Hebrew University of Jerusalem, Jerusalem 9112002, Israel; (M.S.N.); (M.K.); (A.H.)
- VINČA Institute of Nuclear Sciences, National Institute of the Republic of Serbia, University of Belgrade, Mike Petrovića Alasa 12–14, 11000 Belgrade, Serbia;
| | - Michal Klazas
- School of Pharmacy Institute for Drug Research, Faculty of Medicine, The Hebrew University of Jerusalem, Jerusalem 9112002, Israel; (M.S.N.); (M.K.); (A.H.)
| | - Julius Grosche
- Institute of Physiological Chemistry and Pathobiochemistry, University of Münster, Waldeyer-Str. 15, 48149 Münster, Germany (J.A.E.)
| | - Johannes A. Eble
- Institute of Physiological Chemistry and Pathobiochemistry, University of Münster, Waldeyer-Str. 15, 48149 Münster, Germany (J.A.E.)
| | - Cezary Marcinkiewicz
- Debina Diagnostics Inc., 33 Bishop Hollow Rd., Newtown Square, PA 19073-3211, USA;
| | - Netaly Khazanov
- Department of Chemistry, Bar Ilan University, Ramat-Gan 5290002, Israel; (N.K.); (H.S.)
| | - Hanoch Senderowitz
- Department of Chemistry, Bar Ilan University, Ramat-Gan 5290002, Israel; (N.K.); (H.S.)
| | - Amnon Hoffman
- School of Pharmacy Institute for Drug Research, Faculty of Medicine, The Hebrew University of Jerusalem, Jerusalem 9112002, Israel; (M.S.N.); (M.K.); (A.H.)
| | - Chaim Gilon
- Institute of Chemistry, The Hebrew University of Jerusalem, Jerusalem 9190401, Israel;
| | - Jehoshua Katzhendler
- School of Pharmacy Institute for Drug Research, Faculty of Medicine, The Hebrew University of Jerusalem, Jerusalem 9112002, Israel; (M.S.N.); (M.K.); (A.H.)
| | - Philip Lazarovici
- School of Pharmacy Institute for Drug Research, Faculty of Medicine, The Hebrew University of Jerusalem, Jerusalem 9112002, Israel; (M.S.N.); (M.K.); (A.H.)
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11
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Bae H, Park J, Yoon R, Lee S, Son J. Copper-catalyzed synthesis of primary amides through reductive N-O cleavage of dioxazolones. RSC Adv 2024; 14:9440-9444. [PMID: 38516159 PMCID: PMC10951817 DOI: 10.1039/d4ra00320a] [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: 01/12/2024] [Accepted: 03/05/2024] [Indexed: 03/23/2024] Open
Abstract
A new method for the synthesis of primary amides is developed, in which dioxazolones are treated with a copper catalyst under mild reaction conditions. A broad scope of dioxazolones is exhibited as well as dioxazolones containing biologically active structural motifs. These robust and mild reaction conditions allow the transformation of dioxazolones to primary amides, in which sensitive functional groups such as hydroxyl, aldehyde, trialkylsilyl, and unsaturated carbon units are tolerated with excellent chemoselectivity.
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Affiliation(s)
- Hyeonwoong Bae
- Department of Chemical Engineering (BK21 FOUR Graduate Program), Dong-A University 37 Nakdong-Daero 550beon-gil, Saha-gu Busan 49315 South Korea
- Department of Chemistry, Dong-A University 37 Nakdong-Daero 550beon-gil, Saha-gu Busan 49315 South Korea
| | - Jinhwan Park
- Department of Chemical Engineering (BK21 FOUR Graduate Program), Dong-A University 37 Nakdong-Daero 550beon-gil, Saha-gu Busan 49315 South Korea
- Department of Chemistry, Dong-A University 37 Nakdong-Daero 550beon-gil, Saha-gu Busan 49315 South Korea
| | - Rahyun Yoon
- Department of Chemistry, Dong-A University 37 Nakdong-Daero 550beon-gil, Saha-gu Busan 49315 South Korea
| | - Seunghoon Lee
- Department of Chemical Engineering (BK21 FOUR Graduate Program), Dong-A University 37 Nakdong-Daero 550beon-gil, Saha-gu Busan 49315 South Korea
- Department of Chemistry, Dong-A University 37 Nakdong-Daero 550beon-gil, Saha-gu Busan 49315 South Korea
| | - Jongwoo Son
- Department of Chemical Engineering (BK21 FOUR Graduate Program), Dong-A University 37 Nakdong-Daero 550beon-gil, Saha-gu Busan 49315 South Korea
- Department of Chemistry, Dong-A University 37 Nakdong-Daero 550beon-gil, Saha-gu Busan 49315 South Korea
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12
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Heble AY, Chen CL. Access to Advanced Functional Materials through Postmodification of Biomimetic Assemblies via Click Chemistry. Biomacromolecules 2024; 25:1391-1407. [PMID: 38422548 DOI: 10.1021/acs.biomac.3c01454] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/02/2024]
Abstract
The design, synthesis, and fabrication of functional nanomaterials with specific properties remain a long-standing goal for many scientific fields. The self-assembly of sequence-defined biomimetic synthetic polymers presents a fundamental strategy to explore the chemical space beyond biological systems to create advanced nanomaterials. Moreover, subsequent chemical modification of existing nanostructures is a unique approach for accessing increasingly complex nanostructures and introducing functionalities. Of these modifications, covalent conjugation chemistries, such as the click reactions, have been the cornerstone for chemists and materials scientists. Herein, we highlight some recent advances that have successfully employed click chemistries for the postmodification of assembled one-dimensional (1D) and two-dimensional (2D) nanostructures to achieve applications in molecular recognition, mineralization, and optoelectronics. Specifically, biomimetic nanomaterials assembled from sequence-defined macromolecules such as peptides and peptoids are described.
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Affiliation(s)
- Annie Y Heble
- Physical Sciences Division, Pacific Northwest National Laboratory, Richland, Washington 99354, United States
| | - Chun-Long Chen
- Physical Sciences Division, Pacific Northwest National Laboratory, Richland, Washington 99354, United States
- Department of Chemical Engineering, University of Washington, Seattle, Washington 98195, United States
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13
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Wang S, Ye X, Yang Z, Li A, Sheng X, Wang Q, Jia C. Guest-Facilitated Heteroleptic Assembly of Helical Anionocages Enables Reversible Chirality Modulation. Angew Chem Int Ed Engl 2024; 63:e202319552. [PMID: 38179815 DOI: 10.1002/anie.202319552] [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: 12/18/2023] [Revised: 01/04/2024] [Accepted: 01/04/2024] [Indexed: 01/06/2024]
Abstract
We report a novel strategy for reversible modulation of the supramolecular chirality based on guest-facilitated heteroleptic assembly of helical anionocages. Two triple-stranded helical anionocages including a chiral cage 1 (A2 L1 3 ) and a crown ether functionalized achiral cage 2 (A2 L2 3 ) were synthesized by anion coordination of bis-monourea-based ligands and PhPO3 2- . Both cages exhibited favorable binding with tetraethylammonium TEA+ and cobaltocenium Cob+ (endo-guest, bound in the cavity). Additionally, cage 2 could reversibly release and recapture the guests through binding the exo-guest potassium ions (K+ ) in the crown ethers and subsequent removal of the K+ by [2,2,2]-cryptand. The circular dichroism (CD) spectrum of cage 1 was not significantly affected by guest encapsulation or mixing with the "empty" cage 2. However, in the presence of both cage 2 and an endo-guest/exo-guest, the Cotton effects were reversed at 391 nm and significantly enhanced at 310 nm. This observation was attributed to the guest-facilitated formation of heteroleptic cages that enabled effective chirality transfer from the chiral to the achiral ligands. The CD changes induced by K+ could be fully reversed by removing it with [2,2,2]-cryptand. Sequential addition and removal of K+ allowed reversible modulation of the chirality for at least 10 cycles without significant attenuation.
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Affiliation(s)
- Shanshan Wang
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, Xi'an Key Laboratory of Functional Supramolecular Structure and Materials, College of Chemistry and Materials Science, Northwest University, 710069, Xi'an, China
| | - Xuanli Ye
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, Xi'an Key Laboratory of Functional Supramolecular Structure and Materials, College of Chemistry and Materials Science, Northwest University, 710069, Xi'an, China
| | - Zaiwen Yang
- College of Chemistry and Chemical Engineering, Xi'an University of Science and Technology, 710054, Xi'an, China
| | - Anyang Li
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, Xi'an Key Laboratory of Functional Supramolecular Structure and Materials, College of Chemistry and Materials Science, Northwest University, 710069, Xi'an, China
| | - Xinsong Sheng
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, Xi'an Key Laboratory of Functional Supramolecular Structure and Materials, College of Chemistry and Materials Science, Northwest University, 710069, Xi'an, China
| | - Qiangqiang Wang
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, Xi'an Key Laboratory of Functional Supramolecular Structure and Materials, College of Chemistry and Materials Science, Northwest University, 710069, Xi'an, China
| | - Chuandong Jia
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, Xi'an Key Laboratory of Functional Supramolecular Structure and Materials, College of Chemistry and Materials Science, Northwest University, 710069, Xi'an, China
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14
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Lago-Silva M, Fernández-Míguez M, Rodríguez R, Quiñoá E, Freire F. Stimuli-responsive synthetic helical polymers. Chem Soc Rev 2024; 53:793-852. [PMID: 38105704 DOI: 10.1039/d3cs00952a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2023]
Abstract
Synthetic dynamic helical polymers (supramolecular and covalent) and foldamers share the helix as a structural motif. Although the materials are different, these systems also share many structural properties, such as helix induction or conformational communication mechanisms. The introduction of stimuli responsive building blocks or monomer repeating units in these materials triggers conformational or structural changes, due to the presence/absence of the external stimulus, which are transmitted to the helix resulting in different effects, such as assymetry amplification, helix inversion or even changes in the helical scaffold (elongation, J/H helical aggregates). In this review, we show through selected examples how different stimuli (e.g., temperature, solvents, cations, anions, redox, chiral additives, pH or light) can alter the helical structures of dynamic helical polymers (covalent and supramolecular) and foldamers acting on the conformational composition or molecular structure of their components, which is also transmitted to the macromolecular helical structure.
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Affiliation(s)
- María Lago-Silva
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CiQUS) and Departamento de Química Orgánica, Universidade de Santiago de Compostela, E-15782 Santiago de Compostela, Spain.
| | - Manuel Fernández-Míguez
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CiQUS) and Departamento de Química Orgánica, Universidade de Santiago de Compostela, E-15782 Santiago de Compostela, Spain.
| | - Rafael Rodríguez
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CiQUS) and Departamento de Química Orgánica, Universidade de Santiago de Compostela, E-15782 Santiago de Compostela, Spain.
| | - Emilio Quiñoá
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CiQUS) and Departamento de Química Orgánica, Universidade de Santiago de Compostela, E-15782 Santiago de Compostela, Spain.
| | - Félix Freire
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CiQUS) and Departamento de Química Orgánica, Universidade de Santiago de Compostela, E-15782 Santiago de Compostela, Spain.
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15
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Alkhudhayr EA, Sirbu D, Fsadni M, Vella B, Muhammad BT, Waddell PG, Probert MR, Penfold TJ, Hallam T, Gibson EA, Docampo P. Improving the Conductivity of Amide-Based Small Molecules through Enhanced Molecular Packing and Their Application as Hole Transport Mediators in Perovskite Solar Cells. ACS APPLIED ENERGY MATERIALS 2023; 6:11573-11582. [PMID: 38037633 PMCID: PMC10685326 DOI: 10.1021/acsaem.3c01988] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/09/2023] [Revised: 10/13/2023] [Accepted: 10/23/2023] [Indexed: 12/02/2023]
Abstract
Organic-inorganic hybrid halide perovskite solar cells (PSCs) have attracted substantial attention from the photovoltaic research community, with the power conversion efficiency (PCE) already exceeding 26%. Current state-of-the-art devices rely on Spiro-OMeTAD as the hole-transporting material (HTM); however, Spiro-OMeTAD is costly due to its complicated synthesis and expensive product purification, while its low conductivity ultimately limits the achievable device efficiency. In this work, we build upon our recently introduced family of low-cost amide-based small molecules and introduce a molecule (termed TPABT) that results in high conductivity values (∼10-5 S cm-1 upon addition of standard ionic additives), outperforming our previous amide-based material (EDOT-Amide-TPA, ∼10-6 S cm-1) while only costing an estimated $5/g. We ascribe the increased optoelectronic properties to favorable molecular packing, as shown by single-crystal X-ray diffraction, which results in close spacing between the triphenylamine blocks. This, in turn, results in a short hole-hopping distance between molecules and therefore good mobility and conductivity. In addition, TPABT exhibits a higher bandgap and is as a result more transparent in the visible range of the solar spectrum, leading to lower parasitic absorption losses than Spiro-OMeTAD, and has increased moisture stability. We applied the molecule in perovskite solar cells and obtained good efficiency values in the ∼15% range. Our approach shows that engineering better molecular packing may be the key to developing high-efficiency, low-cost HTMs for perovskite solar cells.
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Affiliation(s)
- Eman A.
A. Alkhudhayr
- Energy
Materials Laboratory, Newcastle University, Newcastle upon Tyne NE1
7RU, U.K.
- Chemistry, Newcastle University, Newcastle upon Tyne NE1 7RU, U.K.
- Department
of Physics, College of Science, King Faisal
University, Al Ahsa 31982, Saudi Arabia
- School
of Natural and Environmental Sciences, Bedson Building,Newcastle University, Newcastle upon Tyne NE1 7RU, U.K.
| | - Dumitru Sirbu
- Physics,
School of Mathematics, Statistics and Physics, Newcastle University, Newcastle
upon Tyne NE1 7RU, U.K.
| | - Miriam Fsadni
- Chemistry, Newcastle University, Newcastle upon Tyne NE1 7RU, U.K.
- School
of Natural and Environmental Sciences, Bedson Building,Newcastle University, Newcastle upon Tyne NE1 7RU, U.K.
| | - Benjamin Vella
- School
of Chemistry, University of Glasgow, Glasgow G12 8QQ, U.K.
| | - Bening T. Muhammad
- Energy
Materials Laboratory, Newcastle University, Newcastle upon Tyne NE1
7RU, U.K.
- Chemistry, Newcastle University, Newcastle upon Tyne NE1 7RU, U.K.
- School
of Natural and Environmental Sciences, Bedson Building,Newcastle University, Newcastle upon Tyne NE1 7RU, U.K.
| | - Paul G. Waddell
- Chemistry, Newcastle University, Newcastle upon Tyne NE1 7RU, U.K.
- School
of Natural and Environmental Sciences, Bedson Building,Newcastle University, Newcastle upon Tyne NE1 7RU, U.K.
| | - Michael R. Probert
- Chemistry, Newcastle University, Newcastle upon Tyne NE1 7RU, U.K.
- School
of Natural and Environmental Sciences, Bedson Building,Newcastle University, Newcastle upon Tyne NE1 7RU, U.K.
| | - Thomas J. Penfold
- Chemistry, Newcastle University, Newcastle upon Tyne NE1 7RU, U.K.
- School
of Natural and Environmental Sciences, Bedson Building,Newcastle University, Newcastle upon Tyne NE1 7RU, U.K.
| | - Toby Hallam
- Physics,
School of Mathematics, Statistics and Physics, Newcastle University, Newcastle
upon Tyne NE1 7RU, U.K.
| | - Elizabeth A. Gibson
- Energy
Materials Laboratory, Newcastle University, Newcastle upon Tyne NE1
7RU, U.K.
- Chemistry, Newcastle University, Newcastle upon Tyne NE1 7RU, U.K.
- School
of Natural and Environmental Sciences, Bedson Building,Newcastle University, Newcastle upon Tyne NE1 7RU, U.K.
| | - Pablo Docampo
- School
of Chemistry, University of Glasgow, Glasgow G12 8QQ, U.K.
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16
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Yang Y, Xue M. Herringbone Helical Foldamers from Aromatic Ether Derived ϵ-Amino Acid Peptides. Chemistry 2023; 29:e202301832. [PMID: 37641870 DOI: 10.1002/chem.202301832] [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: 06/08/2023] [Revised: 08/28/2023] [Accepted: 08/29/2023] [Indexed: 08/31/2023]
Abstract
Oligomers based on an aromatic ether derived ϵ-amino acid peptides folded into herringbone helical structures, induced by successive NH-O-NH & O-NH-O bifurcated hydrogen bonding interactions and reinforced by π-π stacking between aryls from adjacent layers. The diaryl ether bonds -O- worked both as structural units to provide turn motifs for changing the amplitude of the slope along the axis of helix for herringbone formation, and also as acceptors for hydrogen bonding. Attachment of a single chiral carbon to the C-termini of the peptides induced excess of single-handed screw sense and amplification through the chain propagation as exemplified by chain length dependent circular dichroism (CD) investigations.
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Affiliation(s)
- Yong Yang
- School of Chemistry and Chemical Engineering, Key Laboratory of Surface & Interface Science of Polymer Materials of Zhejiang Province, Zhejiang Sci-Tech University, Hangzhou, 310018, China
| | - Min Xue
- School of Science, Department of Physics, Key Laboratory of Optical Field Manipulation of Zhejiang Province, Zhejiang Sci-Tech University, Hangzhou, 310018, China
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17
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Aftahy K, Arrasate P, Bashkirov PV, Kuzmin PI, Maurizot V, Huc I, Frolov VA. Molecular Sensing and Manipulation of Protein Oligomerization in Membrane Nanotubes with Bolaamphiphilic Foldamers. J Am Chem Soc 2023; 145:25150-25159. [PMID: 37948300 PMCID: PMC10682987 DOI: 10.1021/jacs.3c05753] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2023] [Revised: 10/05/2023] [Accepted: 10/06/2023] [Indexed: 11/12/2023]
Abstract
Adaptive and reversible self-assembly of supramolecular protein structures is a fundamental characteristic of dynamic living matter. However, the quantitative detection and assessment of the emergence of mesoscale protein complexes from small and dynamic oligomeric precursors remains highly challenging. Here, we present a novel approach utilizing a short membrane nanotube (sNT) pulled from a planar membrane reservoir as nanotemplates for molecular reconstruction, manipulation, and sensing of protein oligomerization and self-assembly at the mesoscale. The sNT reports changes in membrane shape and rigidity caused by membrane-bound proteins as variations of the ionic conductivity of the sNT lumen. To confine oligomerization to the sNT, we have designed and synthesized rigid oligoamide foldamer tapes (ROFTs). Charged ROFTs incorporate into the planar and sNT membranes, mediate protein binding to the membranes, and, driven by the luminal electric field, shuttle the bound proteins between the sNT and planar membranes. Using Annexin-V (AnV) as a prototype, we show that the sNT detects AnV oligomers shuttled into the nanotube by ROFTs. Accumulation of AnV on the sNT induces its self-assembly into a curved lattice, restricting the sNT geometry and inhibiting the material uptake from the reservoir during the sNT extension, leading to the sNT fission. By comparing the spontaneous and ROFT-mediated entry of AnV into the sNT, we reveal how intricate membrane curvature sensing by small AnV oligomers controls the lattice self-assembly. These results establish sNT-ROFT as a powerful tool for molecular reconstruction and functional analyses of protein oligomerization and self-assembly, with broad application to various membrane processes.
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Affiliation(s)
- Kathrin Aftahy
- Department
of Pharmacy, Ludwig-Maximilians-Universität
München, Munich 81377, Germany
| | - Pedro Arrasate
- Biofisika
Institute (CSIC, UPV/EHU), University of
the Basque Country, Leioa 48940, Spain
- Department
of Biochemistry and Molecular Biology, University
of the Basque Country, Leioa 48940, Spain
| | - Pavel V. Bashkirov
- Research
Institute for Systems Biology and Medicine, Moscow 117246, Russia
| | - Petr I. Kuzmin
- A.N.
Frumkin Institute of Physical Chemistry and Electrochemistry, Moscow 119071, Russia
| | - Victor Maurizot
- Univ. Bordeaux,
CNRS, Bordeaux Institut National Polytechnique, CBMN (UMR 5248), Pessac 33600, France
| | - Ivan Huc
- Department
of Pharmacy, Ludwig-Maximilians-Universität
München, Munich 81377, Germany
| | - Vadim A. Frolov
- Biofisika
Institute (CSIC, UPV/EHU), University of
the Basque Country, Leioa 48940, Spain
- Department
of Biochemistry and Molecular Biology, University
of the Basque Country, Leioa 48940, Spain
- Ikerbasque,
Basque Foundation for Science, Bilbao 48009, Spain
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18
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Liu N, Gao RT, Wu ZQ. Helix-Induced Asymmetric Self-Assembly of π-Conjugated Block Copolymers: From Controlled Syntheses to Distinct Properties. Acc Chem Res 2023; 56:2954-2967. [PMID: 37852202 DOI: 10.1021/acs.accounts.3c00425] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2023]
Abstract
Conspectusπ-Conjugated polymers have gained significant interest because of their potential applications in optoelectronics, bioelectronics, and other domains. The controlled synthesis of π-conjugated block polymers optimizes their performance and enables novel properties and functions. However, precise control of the self-assembled architectures of π-conjugated polymers remains a formidable challenge. Inspired by the precise helical architectures of biomacromolecules, the helical polymers and the supramolecular helical assemblies have gained significant attention. Helical polymers with an excess of one-handed helicity can be optically active with a strong tendency toward self-assembly. Incorporating a helical polymer into a π-conjugated polymer can induce asymmetric helical assemblies, leading to novel chiral materials with unique functionalities.To control the self-assembly of architectures, π-conjugated polymers are usually synthesized into block copolymers by incorporating a polymer with self-assembling characteristics. Although various π-conjugated block copolymers have been produced, precise and asymmetric self-assembly is still challenging and has rarely been addressed. Incorporating helical polymers into the π-conjugated polymers can induce a precise and asymmetric self-assembly, which transfers the chirality of the helical polymer block to the π-conjugated polymer, resulting in chiral supramolecular architectures with unique chiroptical properties and functionalities. However, synthesizing hybrid block copolymers containing two distinct polymer blocks is complicated. Some general strategies such as connecting the chain ends of two preformed homopolymers and extending the chain of a prefabricated π-conjugated polymer with a second monomer are time-consuming and require complex synthetic protocols. Therefore, developing novel strategies for the facile synthesis of π-conjugated block copolymers with a predictable molar mass, low dispersity, and tunable composition is of practical importance.Recently, we investigated a controlled synthesis of helical polyisocyanides, helical polyallenes, and helical polycarbenes by developing advanced Pd(II) and Ni(II) catalysts. These helical polymers were successfully incorporated into π-conjugated polymers, including polythiophene, polyfluorene, and poly(phenyleneethynylene), via a one-pot sequential living block polymerization of the two distinct monomers using Pd(II)- or Ni(II)-complexes as catalysts. As a result, a variety of well-defined π-conjugated block copolymers containing helical polymeric blocks were readily synthesized. Although the copolymerized monomers possess different structures and polymerization mechanisms, the one-pot block copolymerization followed a living polymerization mechanism and provided the desired π-conjugated block copolymers in high yields with controlled molar mass, narrow size distribution, and tunable composition.Remarkably, the helical polymeric block induces the π-conjugated block copolymer asymmetric self-assembly into a supramolecular, one-handed helical architecture resulting in distinct optical properties. More interestingly, by utilizing the crystallization of conjugated blocks and one-handed helical blocks, the crystallization-driven and helix-induced precise asymmetric living self-assembly yielded a family of uniform and single-handed helical architectures with controlled dimensions, narrow distribution, and well-defined helicity. The transfer of helical chirality to the supramolecular architectures rendered the achiral π-conjugated blocks with unique chiroptical properties such as the emission of white light over a broad optical spectrum and the circularly polarized luminescence.
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Affiliation(s)
- Na Liu
- School of Pharmaceutical Sciences, Jilin University, Changchun, Jilin Province 130021, China
| | - Run-Tan Gao
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun 130012, China
| | - Zong-Quan Wu
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun 130012, China
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19
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Ousaka N, MacLachlan MJ, Akine S. Stapling strategy for slowing helicity interconversion of α-helical peptides and isolating chiral auxiliary-free one-handed forms. Nat Commun 2023; 14:6834. [PMID: 37884515 PMCID: PMC10603036 DOI: 10.1038/s41467-023-42493-y] [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: 06/01/2023] [Accepted: 10/12/2023] [Indexed: 10/28/2023] Open
Abstract
In nature, α-helical peptides adopt right-handed conformations that are dictated by L-amino acids. Isolating one-handed α-helical peptides composed of only achiral components remains a significant challenge. Here, this goal is achieved by optical resolution of the corresponding racemic (quasi-)static α-helical peptide with double stapling, which effectively freezes the interconversion between the right-handed (P)- and left-handed (M)-α-helices. An as-obtained doubly stapled analogue having an unprotected L-valine residue at the C-terminus transforms from a kinetically trapped (M)-α-helix to a thermodynamically stable (P)-α-helix upon heating. In contrast, the corresponding singly stapled α-helical peptide undergoes an acid/base-triggered and solvent-induced reversible inversion of its preferred helicity within minutes. The interconversion rates of the singly and doubly stapled α-helical peptide foldamers are approximately 106 and 1012 times slower, respectively, than that of a non-stapled dynamic helical peptide. Therefore, the enantiopure doubly-stapled (quasi-)static α-helical peptide would retain its optical activity for several years at 25 °C.
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Affiliation(s)
- Naoki Ousaka
- Nano Life Science Institute (WPI-NanoLSI), Kanazawa University, Kakuma-machi, Kanazawa, 920-1192, Japan.
| | - Mark J MacLachlan
- Nano Life Science Institute (WPI-NanoLSI), Kanazawa University, Kakuma-machi, Kanazawa, 920-1192, Japan.
- Department of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, BC, V6T 1Z1, Canada.
- Quantum Matter Institute, University of British Columbia, 2355 East Mall, Vancouver, BC, V6T 1Z4, Canada.
| | - Shigehisa Akine
- Nano Life Science Institute (WPI-NanoLSI), Kanazawa University, Kakuma-machi, Kanazawa, 920-1192, Japan.
- Graduate School of Natural Science and Technology, Kanazawa University, Kanazawa, 920-1192, Japan.
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20
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Surukonti SR, Manabolu Surya SB, Katari NK, Yerla RR. Investigating Betrixaban Maleate drug degradation profiles, isolation and characterization of unknown degradation products by mass-triggered preparative HPLC, HRMS, and NMR. J Pharm Biomed Anal 2023; 235:115643. [PMID: 37633165 DOI: 10.1016/j.jpba.2023.115643] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2023] [Revised: 08/10/2023] [Accepted: 08/11/2023] [Indexed: 08/28/2023]
Abstract
Betrixaban Maleate, a novel oral, once-daily factor Xa inhibitor drug substance, was subjected to stress testing under a wide range of degradation conditions, including acidic hydrolysis, alkaline hydrolysis, oxidative, thermal, and photolytic, to determine its inherent stability. The drug was biodegradable in acidic and alkaline environments, and three new degradation products were identified. Two degraded products are formed in an acidic environment, while the third is in alkaline conditions. The three degradants were identified using UPLC-ESI/MS and isolated using mass-triggered preparative HPLC, and their structures were unambiguously elucidated using HRMS and 2D NMR techniques. Based on spectral and chromatographic data, it was firmly proven that these distinct degradation products were the betrixaban chemical's hydrolysis components. The formation of the degradants has been hypothesized through several possible mechanisms.
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Affiliation(s)
- Srikanth Reddy Surukonti
- Department of Chemistry, GITAM School of Science, GITAM deemed to be University, Hyderabad, Telangana, 502 329, India
| | - Surendra Babu Manabolu Surya
- Department of Chemistry, GITAM School of Science, GITAM deemed to be University, Hyderabad, Telangana, 502 329, India.
| | - Naresh Kumar Katari
- Department of Chemistry, GITAM School of Science, GITAM deemed to be University, Hyderabad, Telangana, 502 329, India
| | - Rajender Reddy Yerla
- Department of Chemistry, GITAM School of Science, GITAM deemed to be University, Hyderabad, Telangana, 502 329, India
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21
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Shen J, R D, Li Z, Oh H, Behera H, Joshi H, Kumar M, Aksimentiev A, Zeng H. Sulfur-Containing Foldamer-Based Artificial Lithium Channels. Angew Chem Int Ed Engl 2023; 62:e202305623. [PMID: 37539755 DOI: 10.1002/anie.202305623] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2023] [Revised: 07/18/2023] [Accepted: 08/02/2023] [Indexed: 08/05/2023]
Abstract
Unlike many other biologically relevant ions (Na+ , K+ , Ca2+ , Cl- , etc) and protons, whose cellular concentrations are closely regulated by highly selective channel proteins, Li+ ion is unusual in that its concentration is well tolerated over many orders of magnitude and that no lithium-specific channel proteins have so far been identified. While one naturally evolved primary pathway for Li+ ions to traverse across the cell membrane is through sodium channels by competing with Na+ ions, highly sought-after artificial lithium-transporting channels remain a major challenge to develop. Here we show that sulfur-containing organic nanotubes derived from intramolecularly H-bonded helically folded aromatic foldamers of 3.6 Å in hollow cavity diameter could facilitate highly selective and efficient transmembrane transport of Li+ ions, with high transport selectivity factors of 15.3 and 19.9 over Na+ and K+ ions, respectively.
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Affiliation(s)
- Jie Shen
- College of Chemistry, Fuzhou University, Fuzhou, Fujian, 350116, China
| | - Deepa R
- Department of BioTechnology, Indian Institute of Technology Hyderabad, Kandi, Sangareddy, 502285, Telangana, India
| | - Zhongyan Li
- College of Chemistry, Fuzhou University, Fuzhou, Fujian, 350116, China
| | - Hyeonji Oh
- McKetta Department of Chemical Engineering, The University of Texas at Austin, Austin, TX 78712, USA
| | - Harekrushna Behera
- McKetta Department of Chemical Engineering, The University of Texas at Austin, Austin, TX 78712, USA
| | - Himanshu Joshi
- Department of BioTechnology, Indian Institute of Technology Hyderabad, Kandi, Sangareddy, 502285, Telangana, India
| | - Manish Kumar
- McKetta Department of Chemical Engineering, The University of Texas at Austin, Austin, TX 78712, USA
| | - Aleksei Aksimentiev
- Department of Physics and Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, Urbana, IL 61820, USA
| | - Huaqiang Zeng
- College of Chemistry, Fuzhou University, Fuzhou, Fujian, 350116, China
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22
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Shah SKH, Modi U, Patel K, James A, N S, De S, Vasita R, Prabhakaran P. Site-selective post-modification of short α/γ hybrid foldamers: a powerful approach for molecular diversification towards biomedical applications. Biomater Sci 2023; 11:6210-6222. [PMID: 37526301 DOI: 10.1039/d3bm00766a] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/02/2023]
Abstract
The extensive research work in the exhilarating area of foldamers (artificial oligomers possessing well-defined conformation in solution) has shown them to be promising candidates in biomedical research and materials science. The post-modification approach is successful in peptides, proteins, and polymers to modulate their functions. To the best of our knowledge, site-selective post-modification of a foldamer affording molecules with different pendant functional groups within a molecular scaffold has not yet been reported. We demonstrate for the first time that late-stage site-selective functionalization of short hybrid oligomers is an efficient approach to afford molecules with diverse functional groups. In this article, we report the design and synthesis of hybrid peptides with repeating units of leucine (Leu) and 5-amino salicylic acid (ASA), regioselective post-modification, conformational analyses (based on solution-state NMR, circular dichroism and computational studies) and morphological studies of the peptide nanostructures. As a proof-of-concept, we demonstrate the applications of differently modified peptides as drug delivery agents, imaging probes, and anticancer agents. The novel feature of the work is that the difference in reactivity of two phenolic OH groups in short biomimetic peptides was utilized to achieve site-selective post-modification. It is challenging to apply the same approach to short α-peptides having a poor folding tendency, and their post-functionalization may considerably affect their conformation.
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Affiliation(s)
| | - Unnati Modi
- School of Life Sciences, Central University of Gujarat, Gandhinagar 382030, India
| | - Karma Patel
- School of Chemical Sciences, Central University of Gujarat, Gandhinagar 382030, India.
| | - Anjima James
- Department of Applied Chemistry, Cochin University of Science and Technology, Kochi 682022, India
| | - Sreerag N
- School of Chemical Sciences, Central University of Gujarat, Gandhinagar 382030, India.
| | - Susmita De
- Department of Chemistry, University of Calicut, Calicut 673635, India
| | - Rajesh Vasita
- School of Life Sciences, Central University of Gujarat, Gandhinagar 382030, India
| | - Panchami Prabhakaran
- School of Chemical Sciences, Central University of Gujarat, Gandhinagar 382030, India.
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23
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Raju C, Mridula K, Srinivasan N, Kunnikuruvan S, Sureshan KM. Topochemical Syntheses of Polyarylopeptides Involving Large Molecular Motions: Frustrated Monomer Packing Leads to the Formation of Polymer Blends. Angew Chem Int Ed Engl 2023; 62:e202306504. [PMID: 37486334 DOI: 10.1002/anie.202306504] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2023] [Revised: 07/24/2023] [Accepted: 07/24/2023] [Indexed: 07/25/2023]
Abstract
We report the topochemical syntheses of three polyarylopeptides, wherein triazolylphenyl group is integrated into the backbone of peptide chains. We synthesized three different monomers having azide and arylacetylene as end-groups from glycine, L-alanine and L-valine. We crystallized these monomers and the crystal structures of two of them were determined by single-crystal X-ray diffractometry. Due to the steric constraints, both of these monomers crystallized with two molecules, viz. conformers A and B, in the asymmetric unit. Consistently, in both cases, the A-conformers are antiparallelly π-stacked and B-conformers are parallelly slip-stacked, exploiting weak interactions. Though the arrangements of molecules in the pristine crystals were unsuitable for topochemical reaction, upon heating, they undergo large motion inside the crystal lattice to reach a transient reactive orientation and thereby the self-sorted conformer stacks react to give a blend of triazole-linked polyarylopeptides having two different linkages. Due to the large molecular motion inside crystals, the product phase loses its crystallinity.
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Affiliation(s)
- Cijil Raju
- School of Chemistry, Indian Institute of Science Education and Research Thiruvananthapuram Thiruvananthapuram, Kerala, 695551, India
| | - Kozhukunnon Mridula
- School of Chemistry, Indian Institute of Science Education and Research Thiruvananthapuram Thiruvananthapuram, Kerala, 695551, India
| | - Nikitha Srinivasan
- Department of Chemistry, Indian Institute of Technology Madras, Chennai, 600036, India
| | - Sooraj Kunnikuruvan
- Department of Chemistry, Indian Institute of Technology Madras, Chennai, 600036, India
- Centre for Atomistic Modelling and Materials Design and Centre for Molecular Materials and Functions, Indian Institute of Technology Madras, Chennai, 600036, India
| | - Kana M Sureshan
- School of Chemistry, Indian Institute of Science Education and Research Thiruvananthapuram Thiruvananthapuram, Kerala, 695551, India
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24
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Gao J, Ma R, Poovan F, Zhang L, Atia H, Kalevaru NV, Sun W, Wohlrab S, Chusov DA, Wang N, Jagadeesh RV, Beller M. Streamlining the synthesis of amides using Nickel-based nanocatalysts. Nat Commun 2023; 14:5013. [PMID: 37591856 PMCID: PMC10435480 DOI: 10.1038/s41467-023-40614-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2022] [Accepted: 08/03/2023] [Indexed: 08/19/2023] Open
Abstract
The synthesis of amides is a key technology for the preparation of fine and bulk chemicals in industry, as well as the manufacture of a plethora of daily life products. Furthermore, it constitutes a central bond-forming methodology for organic synthesis and provides the basis for the preparation of numerous biomolecules. Here, we present a robust methodology for amide synthesis compared to traditional amidation reactions: the reductive amidation of esters with nitro compounds under additives-free conditions. In the presence of a specific heterogeneous nickel-based catalyst a wide range of amides bearing different functional groups can be selectively prepared in a more step-economy way compared to previous syntheses. The potential value of this protocol is highlighted by the synthesis of drugs, as well as late-stage modifications of bioactive compounds. Based on control experiments, material characterizations, and DFT computations, we suggest metallic nickel and low-valent Ti-species to be crucial factors that makes this direct amide synthesis possible.
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Affiliation(s)
- Jie Gao
- Leibniz-Institut für Katalyse e.V., Albert-Einstein-Street 29a, 18059, Rostock, Germany
| | - Rui Ma
- Leibniz-Institut für Katalyse e.V., Albert-Einstein-Street 29a, 18059, Rostock, Germany
| | - Fairoosa Poovan
- Leibniz-Institut für Katalyse e.V., Albert-Einstein-Street 29a, 18059, Rostock, Germany
| | - Lan Zhang
- Faculty of Environment and Life, Beijing University of Technology, 100124, Beijing, China
| | - Hanan Atia
- Leibniz-Institut für Katalyse e.V., Albert-Einstein-Street 29a, 18059, Rostock, Germany
| | - Narayana V Kalevaru
- Leibniz-Institut für Katalyse e.V., Albert-Einstein-Street 29a, 18059, Rostock, Germany
| | - Wenjing Sun
- Guang-dong Medical University, 523808, Dongguan, China
| | - Sebastian Wohlrab
- Leibniz-Institut für Katalyse e.V., Albert-Einstein-Street 29a, 18059, Rostock, Germany
| | - Denis A Chusov
- A. N. Nesmeyanov Institute of Organoelement Compounds, 119991, Moscow, Russia.
| | - Ning Wang
- Faculty of Environment and Life, Beijing University of Technology, 100124, Beijing, China.
| | - Rajenahally V Jagadeesh
- Leibniz-Institut für Katalyse e.V., Albert-Einstein-Street 29a, 18059, Rostock, Germany.
- Nanotechnology Centre, Centre of Energy and Environmental Technologies, VŠB-Technical University of Ostrava, Ostrava-Poruba, Czech Republic.
| | - Matthias Beller
- Leibniz-Institut für Katalyse e.V., Albert-Einstein-Street 29a, 18059, Rostock, Germany.
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25
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Sang P, Cai J. Unnatural helical peptidic foldamers as protein segment mimics. Chem Soc Rev 2023; 52:4843-4877. [PMID: 37401344 PMCID: PMC10389297 DOI: 10.1039/d2cs00395c] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2022] [Indexed: 07/05/2023]
Abstract
Unnatural helical peptidic foldamers have attracted considerable attention owing to their unique folding behaviours, diverse artificial protein binding mechanisms, and promising applications in chemical, biological, medical, and material fields. Unlike the conventional α-helix consisting of molecular entities of native α-amino acids, unnatural helical peptidic foldamers are generally comprised of well-defined backbone conformers with unique and unnatural structural parameters. Their folded structures usually arise from unnatural amino acids such as N-substituted glycine, N-substituted-β-alanine, β-amino acid, urea, thiourea, α-aminoxy acid, α-aminoisobutyric acid, aza-amino acid, aromatic amide, γ-amino acid, as well as sulfono-γ-AA amino acid. They can exhibit intriguing and predictable three-dimensional helical structures, generally featuring superior resistance to proteolytic degradation, enhanced bioavailability, and improved chemodiversity, and are promising in mimicking helical segments of various proteins. Although it is impossible to include every piece of research work, we attempt to highlight the research progress in the past 10 years in exploring unnatural peptidic foldamers as protein helical segment mimics, by giving some representative examples and discussing the current challenges and future perspectives. We expect that this review will help elucidate the principles of structural design and applications of existing unnatural helical peptidic foldamers in protein segment mimicry, thereby attracting more researchers to explore and generate novel unnatural peptidic foldamers with unique structural and functional properties, leading to more unprecedented and practical applications.
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Affiliation(s)
- Peng Sang
- Tianjian Laboratory of Advanced Biomedical Sciences, School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450001, China.
| | - Jianfeng Cai
- Department of Chemistry, University of South Florida, Tampa, FL 33620, USA.
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26
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Wayment LJ, Wang X, Huang S, McCoy MS, Chen H, Hu Y, Jin Y, Sharma S, Zhang W. 3D Covalent Organic Framework as a Metastable Intermediate in the Formation of a Double-Stranded Helical Covalent Polymer. J Am Chem Soc 2023. [PMID: 37406308 DOI: 10.1021/jacs.3c04734] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/07/2023]
Abstract
The design and development of intricate artificial architectures have been pursued for decades. Helical covalent polymer (HCP) was recently reported as an unexpected topology that consists of chiral 1D polymers assembled through weak hydrogen bonds from achiral building blocks. However, many questions remained about the formation, driving force, and the single-handedness observed in each crystal. In this work, we reveal a metastable, racemic, fully covalently cross-linked, 3D covalent organic framework (COF) as an intermediate in the early stage of polymerization, which slowly converts into single-handed HCP double helices through partial fragmentation and self-sorting with the aid of a series of hydrogen bonding. Our work provides an intriguing example where weak noncovalent bonds serve as the determining factor of the overall product structure and facilitate the formation of a sophisticated polymeric architecture.
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Affiliation(s)
- Lacey J Wayment
- Department of Chemistry, University of Colorado Boulder, Boulder, Colorado 80309, United States
| | - Xubo Wang
- Department of Chemistry, University of Colorado Boulder, Boulder, Colorado 80309, United States
| | - Shaofeng Huang
- Department of Chemistry, University of Colorado Boulder, Boulder, Colorado 80309, United States
| | - Matthew S McCoy
- Department of Chemistry, University of Colorado Boulder, Boulder, Colorado 80309, United States
| | - Hongxuan Chen
- Department of Chemistry, University of Colorado Boulder, Boulder, Colorado 80309, United States
| | - Yiming Hu
- Department of Chemistry, University of Colorado Boulder, Boulder, Colorado 80309, United States
| | - Yinghua Jin
- Department of Chemistry, University of Colorado Boulder, Boulder, Colorado 80309, United States
| | - Sandeep Sharma
- Department of Chemistry, University of Colorado Boulder, Boulder, Colorado 80309, United States
| | - Wei Zhang
- Department of Chemistry, University of Colorado Boulder, Boulder, Colorado 80309, United States
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27
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Wu J, Sun X, Li X, Li X, Feng W, Yuan L. Multi-Responsive Molecular Encapsulation and Release Based on Hydrogen-Bonded Azo-Macrocycle. Molecules 2023; 28:molecules28114437. [PMID: 37298912 DOI: 10.3390/molecules28114437] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2023] [Revised: 05/27/2023] [Accepted: 05/27/2023] [Indexed: 06/12/2023] Open
Abstract
Research on stimuli-responsive host-guest systems is at the cutting edge of supramolecular chemistry, owing to their numerous potential applications such as catalysis, molecular machines, and drug delivery. Herein, we present a multi-responsive host-guest system comprising azo-macrocycle 1 and 4,4'-bipyridinium salt G1 for pH-, photo-, and cation- responsiveness. Previously, we reported a novel hydrogen-bonded azo-macrocycle 1. The size of this host can be controlled through light-induced E↔Z photo-isomerization of the constituent azo-benzenes. The host is found in this work to be capable of forming stable complexes with bipyridinium/pyridinium salts, and implementing guest capture and release with G1 under light in a controlled manner. The binding and release of the guest in the complexes can also be easily controlled reversibly by using acid and base. Moreover, the cation competition-induced dissociation of the complex 1a2⊃G1 is achieved. These findings are expected to be useful in regulating encapsulation for sophisticated supramolecular systems.
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Affiliation(s)
- Jinyang Wu
- College of Chemistry, Key Laboratory of Radiation Physics and Technology of the Ministry of Education, Institute of Nuclear Science and Technology, Sichuan University, Chengdu 610064, China
| | - Xuan Sun
- College of Chemistry, Key Laboratory of Radiation Physics and Technology of the Ministry of Education, Institute of Nuclear Science and Technology, Sichuan University, Chengdu 610064, China
| | - Xianghui Li
- College of Chemistry, Key Laboratory of Radiation Physics and Technology of the Ministry of Education, Institute of Nuclear Science and Technology, Sichuan University, Chengdu 610064, China
| | - Xiaowei Li
- College of Chemistry, Key Laboratory of Radiation Physics and Technology of the Ministry of Education, Institute of Nuclear Science and Technology, Sichuan University, Chengdu 610064, China
| | - Wen Feng
- College of Chemistry, Key Laboratory of Radiation Physics and Technology of the Ministry of Education, Institute of Nuclear Science and Technology, Sichuan University, Chengdu 610064, China
| | - Lihua Yuan
- College of Chemistry, Key Laboratory of Radiation Physics and Technology of the Ministry of Education, Institute of Nuclear Science and Technology, Sichuan University, Chengdu 610064, China
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28
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Haque M, Flack T, Singh R, Wall A, de Castro GV, Jiang L, White AJP, Barnard A. Aromatic oligoesters as novel helix mimetic scaffolds. Bioorg Med Chem 2023; 87:117311. [PMID: 37182518 DOI: 10.1016/j.bmc.2023.117311] [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: 03/02/2023] [Revised: 04/25/2023] [Accepted: 04/28/2023] [Indexed: 05/16/2023]
Abstract
The design, synthesis, and conformational analysis of a novel aromatic oligoester helix mimetic scaffold is reported. A range of amino acid-type side-chain functionality can be readily incorporated into monomer building blocks over three facile synthetic steps. Analysis of representative dimers revealed a stable conformer capable of effective mimicry of a canonical α-helix and the scaffold was found to be surprisingly stable to degradation in aqueous solutions at acidic and neutral pH.
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Affiliation(s)
- Muhammed Haque
- Department of Chemistry, Molecular Sciences Research Hub, Imperial College London, London W12 0BZ, UK
| | - Theo Flack
- Department of Chemistry, Molecular Sciences Research Hub, Imperial College London, London W12 0BZ, UK
| | - Ravi Singh
- Department of Chemistry, Molecular Sciences Research Hub, Imperial College London, London W12 0BZ, UK
| | - Archie Wall
- Department of Chemistry, Molecular Sciences Research Hub, Imperial College London, London W12 0BZ, UK
| | | | - Lishen Jiang
- Department of Chemistry, Molecular Sciences Research Hub, Imperial College London, London W12 0BZ, UK
| | - Andrew J P White
- Department of Chemistry, Molecular Sciences Research Hub, Imperial College London, London W12 0BZ, UK
| | - Anna Barnard
- Department of Chemistry, Molecular Sciences Research Hub, Imperial College London, London W12 0BZ, UK.
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29
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Roe WE, Warnock TMC, Knipe PC. A spirocyclic backbone accesses new conformational space in an extended, dipole-stabilized foldamer. Commun Chem 2023; 6:71. [PMID: 37069245 PMCID: PMC10110530 DOI: 10.1038/s42004-023-00868-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2023] [Accepted: 03/24/2023] [Indexed: 04/19/2023] Open
Abstract
Most aromatic foldamers adopt uniform secondary structures, offering limited potential for the exploration of conformational space and the formation of tertiary structures. Here we report the incorporation of spiro bis-lactams to allow controlled rotation of the backbone of an iteratively synthesised foldamer. This enables precise control of foldamer shape along two orthogonal directions, likened to the aeronautical yaw and roll axes. XRD, NMR and computational data suggest that homo-oligomers adopt an extended right-handed helix with a pitch of over 30 Å, approximately that of B-DNA. Compatibility with extant foldamers to form hetero-oligomers is demonstrated, allowing greater structural complexity and function in future hybrid foldamer designs.
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Affiliation(s)
- William Edward Roe
- School of Chemistry and Chemical Engineering, Queen's University Belfast, David Keir Building, Belfast, BT9 5AG, UK
| | - Toyah Mary Catherine Warnock
- School of Chemistry and Chemical Engineering, Queen's University Belfast, David Keir Building, Belfast, BT9 5AG, UK
| | - Peter Clarke Knipe
- School of Chemistry and Chemical Engineering, Queen's University Belfast, David Keir Building, Belfast, BT9 5AG, UK.
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30
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Gou F, Shi D, Kou B, Li Z, Yan X, Wu X, Jiang YB. One-Pot Cyclization to Large Peptidomimetic Macrocycles by In Situ-Generated β-Turn-Enforced Folding. J Am Chem Soc 2023; 145:9530-9539. [PMID: 37037798 DOI: 10.1021/jacs.2c11684] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
Abstract
Macrocycles have been targets of extensive synthetic efforts for decades because of their potent molecular recognition and self-assembly capabilities. Yet, efficient syntheses of macrocyclic molecules via irreversible covalent bonds remain challenging. Here, we report an efficient approach to large peptidomimetic macrocycles by using the in situ-generated β-turn structural motifs afforded in the amidothiourea moieties from the early steps of the reaction of 2 molecules of bilateral amino acid-based acylhydrazine with 2 molecules of diisothiocyanate. Four chiral and achiral peptidomimetic large macrocycles were successfully synthesized in high yields of 45-63% in a feasible one-pot reaction under sub-molar concentration conditions and were purified by simple filtration. X-ray crystallographic characterization of three macrocycles reveals an important feature that their four β-turn structures, each maintained by four 10-membered intramolecular hydrogen bonds, alternatively network the four aromatic arms. This affords an interesting conformation switching mode upon anion binding. Binding of SO42- to 1L or 1D that contains 4 alanine residues (with the lowest steric hinderance among the macrocycles) leads to an inside-out structural change of the host macrocycle, as confirmed by the X-ray crystal structure of 1L-SO42- and 1D-SO42- complexes, accompanied by an inversion of the CD signals. On the basis of the strong sulfate affinity of the macrocycles, we succeeded in the removal of sulfate anions from water via a macrocycle-mediated liquid-liquid extraction method. Our synthetic protocol can be easily extended to other macrocycles of varying arms and/or chiral amino acid residues; thus, a variety of structurally and functionally diverse macrocycles are expected to be readily made.
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Affiliation(s)
- Fei Gou
- Department of Chemistry, College of Chemistry and Chemical Engineering, The MOE Key Laboratory of Spectrochemical Analysis and Instrumentation, and Collaborative Innovation Center of Chemistry for Energy Materials (iChEM), Xiamen University, Xiamen 361005, China
| | - Di Shi
- Department of Chemistry, College of Chemistry and Chemical Engineering, The MOE Key Laboratory of Spectrochemical Analysis and Instrumentation, and Collaborative Innovation Center of Chemistry for Energy Materials (iChEM), Xiamen University, Xiamen 361005, China
| | - Bohan Kou
- Department of Chemistry, College of Chemistry and Chemical Engineering, The MOE Key Laboratory of Spectrochemical Analysis and Instrumentation, and Collaborative Innovation Center of Chemistry for Energy Materials (iChEM), Xiamen University, Xiamen 361005, China
| | - Zhao Li
- Department of Chemistry, College of Chemistry and Chemical Engineering, The MOE Key Laboratory of Spectrochemical Analysis and Instrumentation, and Collaborative Innovation Center of Chemistry for Energy Materials (iChEM), Xiamen University, Xiamen 361005, China
| | - Xiaosheng Yan
- Department of Chemistry, College of Chemistry and Chemical Engineering, The MOE Key Laboratory of Spectrochemical Analysis and Instrumentation, and Collaborative Innovation Center of Chemistry for Energy Materials (iChEM), Xiamen University, Xiamen 361005, China
- School of Pharmaceutical Sciences, Xiamen University, Xiamen 361102, China
| | - Xin Wu
- School of Pharmaceutical Sciences, Xiamen University, Xiamen 361102, China
- School of Chemistry and Molecular Biosciences, The University of Queensland, St Lucia, Queensland 4072, Australia
| | - Yun-Bao Jiang
- Department of Chemistry, College of Chemistry and Chemical Engineering, The MOE Key Laboratory of Spectrochemical Analysis and Instrumentation, and Collaborative Innovation Center of Chemistry for Energy Materials (iChEM), Xiamen University, Xiamen 361005, China
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31
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Wang Z, Mei L, Guo C, Huang S, Shi WQ, Li X, Feng W, Li X, Yang C, Yuan L. Supramolecular Shish Kebabs: Higher Order Dimeric Structures from Ring-in-Rings Complexes with Conformational Adaptivity. Angew Chem Int Ed Engl 2023; 62:e202216690. [PMID: 36652350 DOI: 10.1002/anie.202216690] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2022] [Revised: 01/13/2023] [Accepted: 01/16/2023] [Indexed: 01/19/2023]
Abstract
Use of abiotic chemical systems for understanding higher order superstructures is challenging. Here we report a ring-in-ring(s) system comprising a hydrogen-bonded macrocycle and cyclobis(paraquat-o-phenylene) tetracation (o-Box) or cyclobis(paraquat-p-phenylene) tetracation (CBPQT4+ , p-Box) that assembles to construct discrete higher order structures with adaptive conformation. As indicated by mass spectrometry, computational modeling, NMR spectroscopy, and single-crystal X-ray diffraction analysis, this ring-in-ring(s) system features the box-directed aggregation of multiple macrocycles, leading to generation of several stable species such as H4G (1 a/o-Box) and H5G (1 a/o-Box). Remarkably, a dimeric shish-kebab-like ring-in-rings superstructure H7G2 (1 a/o-Box) or H8G2 (1 a/p-Box) is formed from the coaxial stacking of two ring-in-rings units. The formation of such unique dimeric superstructures is attributed to the large π-surface of this 2D planar macrocycle and the conformational variation of both host and guest.
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Affiliation(s)
- Zhenwen Wang
- College of Chemistry, Key Laboratory of Radiation Physics and Technology of Ministry of Education, Sichuan University, Chengdu, Sichuan, 610064, China) (The first email address should be
| | - Lei Mei
- Laboratory of Nuclear Energy Chemistry, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, 100049, China
| | - Chenxing Guo
- College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen, Guangdong, 518071, China
| | - Song Huang
- College of Chemistry, Key Laboratory of Radiation Physics and Technology of Ministry of Education, Sichuan University, Chengdu, Sichuan, 610064, China) (The first email address should be
| | - Wei-Qun Shi
- Laboratory of Nuclear Energy Chemistry, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, 100049, China
| | - Xiaowei Li
- College of Chemistry, Key Laboratory of Radiation Physics and Technology of Ministry of Education, Sichuan University, Chengdu, Sichuan, 610064, China) (The first email address should be
| | - Wen Feng
- College of Chemistry, Key Laboratory of Radiation Physics and Technology of Ministry of Education, Sichuan University, Chengdu, Sichuan, 610064, China) (The first email address should be
| | - Xiaopeng Li
- College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen, Guangdong, 518071, China.,University General Hospital, Shenzhen University Clinical Medical Academy, Shenzhen University, Shenzhen, Guangdong, 518055, China
| | - Cheng Yang
- College of Chemistry, Key Laboratory of Radiation Physics and Technology of Ministry of Education, Sichuan University, Chengdu, Sichuan, 610064, China) (The first email address should be
| | - Lihua Yuan
- College of Chemistry, Key Laboratory of Radiation Physics and Technology of Ministry of Education, Sichuan University, Chengdu, Sichuan, 610064, China) (The first email address should be
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32
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Roles of Hydrogen, Halogen Bonding and Aromatic Stacking in a Series of Isophthalamides. Symmetry (Basel) 2023. [DOI: 10.3390/sym15030738] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/19/2023] Open
Abstract
The synthesis and spectroscopic characterisation of six bis(5-X-pyridine-2-yl)isophthalamides (X = H, F, Br, Cl, I, NO2) are reported, together with five crystal structure analyses (for X = H, F to I). The isophthalamides span a range of conformations as syn/anti (H-DIP; I-DIP), anti/anti- (F-DIP; Br-DIP) and with both present in ratio 2:1 in Cl-DIP. The essentially isostructural F-DIP and Br-DIP molecules (using strong amide…amide interactions) aggregate into 2D molecular sheets that align with either F/H or Br atoms at the sheet surfaces (interfaces), respectively. Sheets are linked by weak C-H⋯F contacts in F-DIP and by Br⋯Br halogen bonding interactions as a ‘wall of bromines’ at the Br atom rich interfaces in Br-DIP. Cl-DIP is an unusual crystal structure incorporating both syn/anti and anti/anti molecular conformations in the asymmetric unit (Z’ = 3). The I-DIP•½(H2O) hemihydrate structure has a water molecule residing on a twofold axis between two I-DIPs and has hydrogen and N⋯I (Nc = 0.88) halogen bonding. The hydrate is central to an unusual synthon and involved in six hydrogen bonding interactions/contacts. Contact enrichment analysis on the Hirshfeld surface demonstrates that F-DIP, Cl-DIP and Br-DIP have especially over-represented halogen···halogen interactions. With the F-DIP, Cl-DIP and Br-DIP molecules having an elongated skeleton, the formation of layers of halogen atoms in planes perpendicular to the long unit cell axis occurs in the crystal packings. All six DIPs were analysed by ab initio calculations and conformational analysis; comparisons are made between their minimized structures and the five crystal structures. In addition, physicochemical properties are compared and assessed.
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33
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Amidoquinoline-based xylofuranose derivative for selective detection of Cu2+ in aqueous medium. J Photochem Photobiol A Chem 2023. [DOI: 10.1016/j.jphotochem.2022.114468] [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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34
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Zhang J, Shao Y, Zheng H, Xue XS. Transition State Stabilization by SCF 2 -H⋅⋅⋅O Bifurcated Hydrogen Bond. Chem Asian J 2023; 18:e202201244. [PMID: 36635229 DOI: 10.1002/asia.202201244] [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: 12/14/2022] [Revised: 01/10/2023] [Accepted: 01/12/2023] [Indexed: 01/14/2023]
Abstract
The difluoromethylthio group (SCF2 H), which is generally considered a highly lipophilic weak hydrogen bonding donor, has attracted special interest from the pharmaceutical and agrochemical industry. Remarkably, there have been relatively few literature investigations of SCF2 H hydrogen bonding interactions. Here, we report the determination of the hydrogen bond acidity parameter A of the SCF2 H in the most popularly used electrophilic difluoromethylthiolating reagent. We present kinetic and computational evidence of the RSCF2 -H⋅⋅⋅O2 bifurcated hydrogen bond for stabilizing the SCF2 H-transferring transition state, which could cause a reversal of apparent electrophilic reactivity of difluoromethylthiolating and trifluoromethylthiolating reagents. Solvent effects on the RSCF2 -H⋅⋅⋅O2 bifurcated hydrogen bonds will also be discussed.
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Affiliation(s)
- Jingjing Zhang
- Center of Basic Molecular Science, Department of Chemistry, Tsinghua University, Beijing, 100084, China
| | - Yingbo Shao
- College of Chemistry, Nankai University, Tianjin, 300071, P. R. China
| | - Hanliang Zheng
- College of Chemistry, Nankai University, Tianjin, 300071, P. R. China
| | - Xiao-Song Xue
- College of Chemistry, Nankai University, Tianjin, 300071, P. R. China.,Key Laboratory of Organofluorine Chemistry, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences Chinese Academy of Sciences, 345 Lingling Road, Shanghai, 200032, P. R. China.,School of Chemistry and Materials Science, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, 1 Sub-lane Xiangshan, Hangzhou, 310024, P. R. China
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35
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Menke FS, Mazzier D, Wicher B, Allmendinger L, Kauffmann B, Maurizot V, Huc I. Molecular torsion springs: alteration of helix curvature in frustrated tertiary folds. Org Biomol Chem 2023; 21:1275-1283. [PMID: 36645374 DOI: 10.1039/d2ob02109a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
The first abiotic foldamer tertiary structures have been recently reported in the form of aromatic helix-turn-helix motifs based on oligo-quinolinecarboxamides held together by intramolecular hydrogen bonds. Tertiary folds were predicted by computational modelling of the hydrogen-bonding interfaces between helices and later verified by X-ray crystallography. However, the prognosis of how the conformational preference inherent to each helix influences the tertiary structure warranted further investigation. Several new helix-turn-helix sequences were synthesised in which some hydrogen bonds have been removed. Contrary to expectations, this change did not strongly destabilise the tertiary folds. On closer inspection, a new crystal structure revealed that helices adopt their natural curvature when some hydrogen bonds are missing and undergo some spring torsion upon forming the said hydrogen bonds, thus potentially giving rise to a conformational frustration. This phenomenon sheds light on the aggregation behaviour of the helices when they are not linked by a turn unit.
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Affiliation(s)
- Friedericke S Menke
- Department of Pharmacy, Ludwig-Maximilians-University, Butenandstraße 5-13, 81377 Munich, Germany.
| | - Daniela Mazzier
- Department of Pharmacy, Ludwig-Maximilians-University, Butenandstraße 5-13, 81377 Munich, Germany.
| | - Barbara Wicher
- Department of Chemical Technology of Drugs, Poznan University of Medical Sciences, Grunwaldzka 6, 60-780 Poznan, Poland
| | - Lars Allmendinger
- Department of Pharmacy, Ludwig-Maximilians-University, Butenandstraße 5-13, 81377 Munich, Germany.
| | - Brice Kauffmann
- Institut Européen de Chimie et Biologie (UMS3011/US001), CNRS, Inserm, Université de Bordeaux, 2 rue Robert Escarpit, F-33600 Pessac, France
| | - Victor Maurizot
- CBMN (UMR 5248), Univ. Bordeaux, CNRS, Bordeaux INP, 2 rue Robert Escarpit, 33600 Pessac, France
| | - Ivan Huc
- Department of Pharmacy, Ludwig-Maximilians-University, Butenandstraße 5-13, 81377 Munich, Germany.
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36
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Devkota GP, Carson WP, Hartley CS. Conformational Control of ortho-Phenylenes by Terminal Amides. J Org Chem 2023; 88:1331-1338. [PMID: 36650119 DOI: 10.1021/acs.joc.2c01858] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Control over the folding of oligomers, be it broad induction of a preferred helical handedness or subtle changes in the orientations of individual functional groups, is important for applications ranging from molecular recognition to long-range conformational communication. Here, we report a series of ortho-phenylene hexamers functionalized with achiral and chiral amides at their termini. NMR spectroscopy, taking advantage of 19F labeling, allows multiple conformers to be detected for each compound. In combination with CD spectroscopy and DFT calculations, specific geometries corresponding to each conformer have been identified and quantified. General conclusions about the effect of sterics and the amide linker on conformational behavior have been drawn, revealing some similarities to and key differences from previously reported imines. A model for twist sense control has been developed that is supported by computational models.
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Affiliation(s)
- Govinda Prasad Devkota
- Department of Chemistry & Biochemistry, Miami University, Oxford, Ohio 45056, United States
| | - William P Carson
- Department of Chemistry & Biochemistry, Miami University, Oxford, Ohio 45056, United States
| | - C Scott Hartley
- Department of Chemistry & Biochemistry, Miami University, Oxford, Ohio 45056, United States
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37
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Fan L, Du M, Kong L, Cai Y, Hu X. Recognition Site Modifiable Macrocycle: Synthesis, Functional Group Variation and Structural Inspection. Molecules 2023; 28:molecules28031338. [PMID: 36771008 PMCID: PMC9921963 DOI: 10.3390/molecules28031338] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2023] [Revised: 01/24/2023] [Accepted: 01/27/2023] [Indexed: 02/04/2023] Open
Abstract
Traditional macrocyclic molecules encode recognition sites in their structural backbones, which limits the variation of the recognition sites and thus, would restrict the adjustment of recognition properties. Here, we report a new oligoamide-based macrocycle capable of varying the recognition functional groups by post-synthesis modification on its structural backbone. Through six steps of common reactions, the parent macrocycle (9) can be produced in gram scale with an overall yield of 31%. The post-synthesis modification of 9 to vary the recognition sites are demonstrated by producing four different macrocycles (10-13) with distinct functional groups, 2-methoxyethoxyl (10), hydroxyl (11), carboxyl (12) and amide (13), respectively. The 1H NMR study suggests that the structure of these macrocycles is consistent with our design, i.e., forming hydrogen bonding network at both rims of the macrocyclic backbone. The 1H-1H NOESY NMR study indicates the recognition functional groups are located inside the cavity of macrocycles. At last, a preliminary molecular recognition study shows 10 can recognize n-octyl-β-D-glucopyranoside (14) in chloroform.
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38
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Yin J, Birman VB. Phenazine-Based Oligomers as Redox-Responsive Molecular Actuators. J Org Chem 2022; 87:15744-15753. [PMID: 36354745 DOI: 10.1021/acs.joc.2c01445] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Nanosized butterfly-coil foldamers containing alternating phenazine-1,6-dicarboxamide and 2,5-dialkoxyterephthalamide moieties have been demonstrated to undergo extension-contraction in response to changing their oxidation state. Both the chemical (catalytic hydrogenation/aerial oxidation) and electrochemical versions of this process have been shown to be clean and fully reversible.
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Affiliation(s)
- Jingwei Yin
- Washington University Department of Chemistry, Campus Box 1134, One Brookings Drive, Saint Louis, Missouri 63130, United States
| | - Vladimir B Birman
- Washington University Department of Chemistry, Campus Box 1134, One Brookings Drive, Saint Louis, Missouri 63130, United States
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39
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Yin J, Birman VB. Phenazine-Based Molecular Actuators: The Second Generation. Org Lett 2022; 24:8759-8763. [DOI: 10.1021/acs.orglett.2c03450] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/05/2022]
Affiliation(s)
- Jingwei Yin
- Washington University Department of Chemistry,
Campus Box 1134, One Brookings Drive, Saint Louis, Missouri 63130, United States
| | - Vladimir B. Birman
- Washington University Department of Chemistry,
Campus Box 1134, One Brookings Drive, Saint Louis, Missouri 63130, United States
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40
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Cui Y, Zhao Y, Shen J, Zhang G, Ding C. The stable "F-SO 2 +" donor provides a mild and efficient approach to nitriles and amides. RSC Adv 2022; 12:33064-33068. [PMID: 36425170 PMCID: PMC9672908 DOI: 10.1039/d2ra05890a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2022] [Accepted: 10/20/2022] [Indexed: 10/17/2023] Open
Abstract
In this update, we developed a mild, efficient and practical method using fluorosulfuryl imidazolium salt A as an environment friendly promoter for conversion of oximes to nitriles or amides via β-elimination or Beckmann rearrangement in almost quantitative yield in 10 minutes. The target products were generated in gram-scale and could be collected through crystallization without silica gel column purification in excellent yield.
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Affiliation(s)
- Yin Cui
- College of Chemical Engineering, Zhejiang University of Technology Hangzhou 310014 P. R. China
| | - Yiyong Zhao
- Zhejiang Ecological Environment Low Carbon Development Center Hangzhou 310014 P. R. China
| | - Junjie Shen
- Zhejiang Kefeng New Material Co. LTD Huzhou 313200 P. R. China
| | - Guofu Zhang
- College of Chemical Engineering, Zhejiang University of Technology Hangzhou 310014 P. R. China
| | - Chengrong Ding
- College of Chemical Engineering, Zhejiang University of Technology Hangzhou 310014 P. R. China
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41
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Wang J, Wicher B, Maurizot V, Huc I. Directing the Self-Assembly of Aromatic Foldamer Helices using Acridine Appendages and Metal Coordination. Chemistry 2022; 28:e202201345. [PMID: 35965255 PMCID: PMC9826129 DOI: 10.1002/chem.202201345] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2022] [Indexed: 01/11/2023]
Abstract
Folded molecules provide complex interaction interfaces amenable to sophisticated self-assembly motifs. Because of their high conformational stability, aromatic foldamers constitute suitable candidates for the rational elaboration of self-assembled architectures. Several multiturn helical aromatic oligoamides have been synthesized that possess arrays of acridine appendages pointing in one or two directions. The acridine units were shown to direct self-assembly in the solid state via aromatic stacking leading to recurrent helix-helix association patterns under the form of discrete dimers or extended arrays. In the presence of Pd(II), metal coordination of the acridine units overwhelms other forces and generates new metal-mediated multihelical self-assemblies, including macrocycles. These observations demonstrate simple access to different types of foldamer-containing architectures, ranging from discrete objects to 1D and, by extension, 2D and 3D arrays.
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Affiliation(s)
- Jinhua Wang
- CBMN (UMR5248)Univ. Bordeaux – CNRS – IPBInstitut Européen de Chimie et Biologie2 rue Escarpit33600PessacFrance
| | - Barbara Wicher
- Department of Chemical Technology of DrugsPoznan University of Medical SciencesGrunwaldzka 660-780PoznanPoland
| | - Victor Maurizot
- CBMN (UMR5248)Univ. Bordeaux – CNRS – IPBInstitut Européen de Chimie et Biologie2 rue Escarpit33600PessacFrance
| | - Ivan Huc
- CBMN (UMR5248)Univ. Bordeaux – CNRS – IPBInstitut Européen de Chimie et Biologie2 rue Escarpit33600PessacFrance,Department of PharmacyLudwig-Maximilians-UniversitätButenandtstrasse 5–1381377MünchenGermany,Cluster of Excellence e-conversion85748GarchingGermany
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42
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Liu C, Wang Z, Zhang L, Dong Z. Soft 2D Covalent Organic Framework with Compacted Honeycomb Topology. J Am Chem Soc 2022; 144:18784-18789. [PMID: 36201683 DOI: 10.1021/jacs.2c08468] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
In this contribution, we report the synthesis of an imine-based soft 2D covalent organic framework (S-COF) with compacted honeycomb topology via inveterately selecting a helically folded ditopic flexible linker and a trigonal building block. In contrast to various topological structures of rigid monomer-based COFs (R-COFs) reported so far, owing to the presence of flexible skeleton S-COF can spontaneously form a compacted and nonporous topological structure via intramolecular π stacking of presupposed honeycomb-like topology. Such S-COFs with a compacted honeycomb topology have neither been proposed theoretically nor been achieved experimentally. The compacted topological structure of 2D S-COF was clearly characterized by transmission electron microscopy (TEM), atomic force microscopy (AFM), powder X-ray diffraction (PXRD), thermogravimetric analysis (TGA), Fourier-transform infrared spectroscopy (FT-IR), and circular dichroism (CD) measurements. This study opens a new window to the development of S-COFs and will significantly expand the scope of COF materials.
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Affiliation(s)
- Chenglong Liu
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun 130012, China
| | - Zhenzhu Wang
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun 130012, China
| | - Lei Zhang
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun 130012, China
| | - Zeyuan Dong
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun 130012, China.,Center for Supramolecular Chemical Biology, Jilin University, Changchun 130012, China.,Key Laboratory for Molecular Enzymology and Engineering of Ministry of Education, Jilin University, Changchun 130012, China
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43
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Liu Z, Zhou Y, Yuan L. Hydrogen-bonded aromatic amide macrocycles: synthesis, properties and functions. Org Biomol Chem 2022; 20:9023-9051. [PMID: 36128982 DOI: 10.1039/d2ob01263d] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
As a classic example of nearly planar cyclic compounds, hydrogen-bonded aromatic amide (H-bonded aramide) macrocycles, consisting of consecutive intramolecular hydrogen bonds and aromatic residues, receive considerable research attention due to their rich host-guest chemistry. This review provides a detailed summary of the synthesis, properties and functions of H-bonded aramide macrocycles and their derivatives. Herein, the constitutional patterns of these macrocycles are divided into two subcategories: interior hydrogen bonding motifs and exterior hydrogen bonding motifs. Based on these two motifs, we summarize the facile synthesis, self-assembly, host-guest interaction complexation of H-bonded aramide macrocycles and the resulting applications such as molecular recognition, artificial ion channels, soft materials, supramolecular catalysis, and artificial molecular machines. The development of H-bonded aramide macrocycles is still in its infancy, although a considerable number of examples have been reported. We hope that this review will provide useful information and unlock new opportunities in this field.
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Affiliation(s)
- Zejiang Liu
- College of Chemistry, Key Laboratory of Radiation Physics and Technology of Ministry of Education, Institute of Nuclear Science and Technology, Sichuan University, Chengdu 610064, China.
| | - Yidan Zhou
- College of Chemistry, Key Laboratory of Radiation Physics and Technology of Ministry of Education, Institute of Nuclear Science and Technology, Sichuan University, Chengdu 610064, China.
| | - Lihua Yuan
- College of Chemistry, Key Laboratory of Radiation Physics and Technology of Ministry of Education, Institute of Nuclear Science and Technology, Sichuan University, Chengdu 610064, China.
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44
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Sobiech TA, Zhong Y, Gong B. Cavity-containing aromatic oligoamide foldamers and macrocycles: progress and future perspectives. Org Biomol Chem 2022; 20:6962-6978. [PMID: 36040143 DOI: 10.1039/d2ob01467j] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
As a major class of foldamers, aromatic oligoamide foldamers have attracted intense interest. The rigidity of aromatic residues and amide linkages allows the development of foldamers with readily predictable, stable conformations. Aromatic oligoamide foldamers having backbones fully constrained by intramolecular hydrogen bonds have attracted wide attention. Depending on their lengths, such foldamers adopt crescent or helical conformations with highly negative inner cavities. Cyclizing the backbone of the aromatic oligoamides affords the corresponding macrocycles which are characterised by persistent shapes and non-deformable inner cavities. With their defined, inner cavities, such aromatic oligoamide foldamers and macrocycles have served as hosts for cationic and polar guests, and as transmembrane channels for transporting ions and molecules. Recent synthetic progress resulted in the construction of multi-turn hollow helices that offer three-dimensional inner pores with adjustable depth. Reducing the number of backbone-constraining hydrogen bonds leads to oligoamides which, with their partially constrained backbones, undergo either solvent- or guest-dependent folding. One class of such aromatic olgioamide foldamders, which offer multiple backbone amide NH groups as hydrogen-bond donors, are designed to bind anions with adjustable affinities.
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Affiliation(s)
- Thomas A Sobiech
- Department of Chemistry, University at Buffalo, the State University of New York, Buffalo, NY 14260, USA.
| | - Yulong Zhong
- Department of Chemistry, University at Buffalo, the State University of New York, Buffalo, NY 14260, USA.
| | - Bing Gong
- Department of Chemistry, University at Buffalo, the State University of New York, Buffalo, NY 14260, USA.
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45
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Su F, Zhang S, Chen Z, Zhang Z, Li Z, Lu S, Zhang M, Fang F, Kang S, Guo C, Su C, Yu X, Wang H, Li X. Precise Synthesis of Concentric Ring, Helicoid, and Ladder Metallo-Polymers with Chevron-Shaped Monomers. J Am Chem Soc 2022; 144:16559-16571. [PMID: 35998652 DOI: 10.1021/jacs.2c06251] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Molecular geometry represents one of the most important structural features and governs physical properties and functions of materials. Nature creates a wide array of substances with distinct geometries but similar chemical composition with superior efficiency and precision. However, it remains a formidable challenge to construct abiological macromolecules with various geometries based on identical repeating units, owing to the lack of corresponding synthetic approaches for precisely manipulating the connectivity between monomers and feasible techniques for characterizing macromolecules at the single-molecule level. Herein, we design and synthesize a series of tetratopic monomers with chevron stripe shape which serve as the key precursors to produce four distinct types of metallo-macromolecules with well-defined geometries, viz., the concentric hexagon, helicoid polymer, ladder polymer, and cross-linked polymer, via platinum-acetylide couplings. Concentric hexagon, helicoid, and ladder metallo-polymers are directly visualized by transmission electron microscopy, atomic force microscopy, and ultra-high-vacuum low-temperature scanning tunneling microscopy at the single-molecule level. Finally, single-walled carbon nanotubes (SWCNTs) are selected as the guest to investigate the structure-property relationship based on such macromolecules, among which the helicoid metallo-polymer shows high efficiency in wrapping SWCNTs with geometry-dependent selectivity.
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Affiliation(s)
- Feng Su
- College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen, Guangdong 518060, China.,Institute of Microscale Optoelectronics, Shenzhen University, Shenzhen, Guangdong 518060, China
| | - Shunran Zhang
- College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen, Guangdong 518060, China.,Guangdong Provincial Key Laboratory of Distributed Energy Systems, Dongguan University of Technology, Dongguan, Guangdong 523106, China
| | - Zhi Chen
- College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen, Guangdong 518060, China
| | - Zeyuan Zhang
- State Key Laboratory for Mechanical Behavior of Materials, Shaanxi International Research Center for Soft Matter, School of Materials Science and Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi 710061, China
| | - Zhikai Li
- College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen, Guangdong 518060, China
| | - Shuai Lu
- College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen, Guangdong 518060, China
| | - Mingming Zhang
- State Key Laboratory for Mechanical Behavior of Materials, Shaanxi International Research Center for Soft Matter, School of Materials Science and Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi 710061, China
| | - Fang Fang
- Instrumental Analysis Center, Shenzhen University, Shenzhen, Guangdong 518060, China
| | - Shimin Kang
- Guangdong Provincial Key Laboratory of Distributed Energy Systems, Dongguan University of Technology, Dongguan, Guangdong 523106, China
| | - Chenxing Guo
- College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen, Guangdong 518060, China
| | - Chenliang Su
- Institute of Microscale Optoelectronics, Shenzhen University, Shenzhen, Guangdong 518060, China
| | - Xiujun Yu
- College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen, Guangdong 518060, China
| | - Heng Wang
- College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen, Guangdong 518060, China
| | - Xiaopeng Li
- College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen, Guangdong 518060, China.,Shenzhen University General Hospital, Shenzhen University Clinical Medical Academy, Shenzhen, Guangdong 518055, China
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46
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Algar JL, Findlay JA, Preston D. Roles of Metal Ions in Foldamers and Other Conformationally Flexible Supramolecular Systems. ACS ORGANIC & INORGANIC AU 2022; 2:464-476. [PMID: 36855532 PMCID: PMC9955367 DOI: 10.1021/acsorginorgau.2c00021] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/09/2022] [Revised: 08/04/2022] [Accepted: 08/08/2022] [Indexed: 11/28/2022]
Abstract
Conformational control is a key prerequisite for much molecular function. As chemists seek to create complex molecules that have applications beyond the academic laboratory, correct spatial positioning is critical. This is particularly true of flexible systems. Conformationally flexible molecules show potential because they resemble in many cases naturally occurring analogues such as the secondary structures found in proteins and peptides such as α-helices and β-sheets. One of the ways in which conformation can be controlled in these molecules is through interaction with or coordination to metal ions. This review explores how secondary structure (i.e., controlled local conformation) in foldamers and other conformationally flexible systems can be enforced or modified through coordination to metal ions. We hope to provide examples that illustrate the power of metal ions to influence this structure toward multiple different outcomes.
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47
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Shen J, Ye R, Liu Z, Zeng H. Hybrid Pyridine–Pyridone Foldamer Channels as M2‐Like Artificial Proton Channels. Angew Chem Int Ed Engl 2022; 61:e202200259. [DOI: 10.1002/anie.202200259] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2022] [Indexed: 11/05/2022]
Affiliation(s)
- Jie Shen
- College of Chemistry Fuzhou University Fuzhou Fujian 350116 China
| | - Ruijuan Ye
- College of Chemistry Fuzhou University Fuzhou Fujian 350116 China
| | - Zhiwei Liu
- Department of Chemistry & Biochemistry Rowan University 201 Mullica Hill Road Glassboro NJ 08028 USA
| | - Huaqiang Zeng
- College of Chemistry Fuzhou University Fuzhou Fujian 350116 China
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48
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Sang P, Shi Y, Wei L, Cai J. Helical sulfono-γ-AApeptides with predictable functions in protein recognition. RSC Chem Biol 2022; 3:805-814. [PMID: 35866163 PMCID: PMC9257604 DOI: 10.1039/d2cb00049k] [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: 02/15/2022] [Accepted: 04/21/2022] [Indexed: 12/01/2022] Open
Abstract
Sulfono-γ-AApeptides are a subset of possible sequence-specific foldamers that might be considered for the design of biomimetic drug molecular structures. Although they have been studied for a relatively short period of time, a number of structures and functions have been designed or discovered within this class of unnatural peptides. Examples of utilizing these sulfono-γ-AApeptides have demonstrated the potential that sulfono-γ-AApeptides can offer, however, to date, their application in biomedical sciences yet remains unexplored. This review mainly summarizes the helical folding conformations of sulfono-γ-AApeptides and their biological application as helical mimetics in medicinally relevant protein-protein interactions (PPIs) and assesses their potential for the mimicry of other α-helices for protein recognition in the future.
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Affiliation(s)
- Peng Sang
- Department of Chemistry, University of South Florida 4202 E. Fowler Ave. Tampa FL 33620 USA
| | - Yan Shi
- Department of Chemistry, University of South Florida 4202 E. Fowler Ave. Tampa FL 33620 USA
| | - Lulu Wei
- Department of Chemistry, University of South Florida 4202 E. Fowler Ave. Tampa FL 33620 USA
| | - Jianfeng Cai
- Department of Chemistry, University of South Florida 4202 E. Fowler Ave. Tampa FL 33620 USA
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49
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Adegboyega AK, Son J. Reaction of Dioxazolones with Boronic Acids: Copper-Mediated Synthesis of N-Aryl Amides via N-Acyl Nitrenes. Org Lett 2022; 24:4925-4929. [PMID: 35776142 DOI: 10.1021/acs.orglett.2c01837] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Dioxazolones, as direct amide sources, have been used with boronic acids in the presence of copper(I) chloride to access N-aryl amides at room temperature. The versatility of the developed reaction is proven by ample scope having a wide range of functional group tolerance. The reaction optimization conditions revealed that a fluorine additive demonstrated improved reactivity toward the intended transformation. The addition of triphenylphosphine resulted in N-acyl iminophosphorane, suggesting the involvement of an N-acyl nitrene intermediate.
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Affiliation(s)
| | - Jongwoo Son
- Department of Chemistry, Dong-A University, Busan 49315, South Korea.,Department of Chemical Engineering (BK21 FOUR Graduate Program), Dong-A University, Busan 49315, South Korea
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50
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Missioui M, Guerrab W, Nchioua I, El Moutaouakil Ala Allah A, Kalonji Mubengayi C, Alsubari A, Mague JT, Ramli Y. Crystal structure and Hirshfeld surface analysis of 2-chloro- N-(4-methoxyphenyl)acetamide. Acta Crystallogr E Crystallogr Commun 2022; 78:687-690. [PMID: 35855360 PMCID: PMC9260361 DOI: 10.1107/s205698902200576x] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2022] [Accepted: 05/28/2022] [Indexed: 11/10/2022]
Abstract
In the title molecule, C9H10ClNO2, the methoxy group lies very close to the plane of the phenyl ring while the acetamido group is twisted out of this plane by 28.87 (5)°. In the crystal, a three-dimensional structure is generated by N—H...O, C—H...O and C—H...Cl hydrogen bonds plus C—H...π(ring) interactions. A Hirshfeld surface analysis of the intermolecular interactions was performed and indicated that C...H/H...C interactions make the largest contribution to the surface area (33.4%).
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