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Dharmarwardana M, Dempsey JM, Padilla-Coley S, Jarvis TS, Shi K, Atkinson KM, Smith BD. Supramolecular capture of highly polar amidosquaraine dye in water with nanomolar affinity and large turn-on fluorescence. Chem Commun (Camb) 2021; 57:13518-13521. [PMID: 34846389 PMCID: PMC8689413 DOI: 10.1039/d1cc05039g] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
A supramolecular dye-capture system comprising anionic amidosquaraine guest and macrocyclic tetralactam host exhibits nanomolar affinity and "turn on" visible fluorescence. Utility is demonstrated with a new fluorescent assay for liposome leakage induced by the biomedically important enzyme phospholipase A2.
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52
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Malla JA, Ahmad M, Talukdar P. Molecular Self-Assembly as a Tool to Construct Transmembrane Supramolecular Ion Channels. CHEM REC 2021; 22:e202100225. [PMID: 34766703 DOI: 10.1002/tcr.202100225] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2021] [Revised: 10/16/2021] [Accepted: 10/25/2021] [Indexed: 12/12/2022]
Abstract
Self-assembly has become a powerful tool for building various supramolecular architectures with applications in material science, environmental science, and chemical biology. One such area is the development of artificial transmembrane ion channels that mimic naturally occurring channel-forming proteins to unveil various structural and functional aspects of these complex biological systems, hoping to replace the defective protein channels with these synthetically accessible moieties. This account describes our recent approaches to construct supramolecular ion channels using synthetic molecules and their applications in medicinal chemistry.
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Affiliation(s)
- Javid Ahmad Malla
- Department of Chemistry, Indian Institute of Science Education and Research Pune, Dr. Homi Bhaba Road, Pune, Maharashtra, 411008, India
| | - Manzoor Ahmad
- Department of Chemistry, Indian Institute of Science Education and Research Pune, Dr. Homi Bhaba Road, Pune, Maharashtra, 411008, India
| | - Pinaki Talukdar
- Department of Chemistry, Indian Institute of Science Education and Research Pune, Dr. Homi Bhaba Road, Pune, Maharashtra, 411008, India
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53
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Kerckhoffs A, Bo Z, Penty SE, Duarte F, Langton MJ. Red-shifted tetra- ortho-halo-azobenzenes for photo-regulated transmembrane anion transport. Org Biomol Chem 2021; 19:9058-9067. [PMID: 34617944 DOI: 10.1039/d1ob01457a] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Photo-responsive synthetic ion transporters are of interest as tools for studying transmembrane transport processes and have potential applications as targeted therapeutics, due to the possibility of spatiotemporal control and wavelength-dependent function. Here we report the synthesis of novel symmetric and non-symmetric red-shifted tetra-ortho-chloro- and tetra-ortho-fluoro azobenzenes, bearing pendant amine functionality. Functionalisation of the photo-switchable scaffolds with squaramide hydrogen bond donors enabled the preparation of a family of anion receptors, which act as photo-regulated transmembrane chloride transporters in response to green or red light. The subtle effects of chlorine/fluorine substitution, meta/para positioning of the anion receptors, and the use of more flexible linkers are explored. NMR titration experiments on the structurally diverse photo-switchable receptors reveal cooperative binding of chloride in the Z, but not E isomer, by the two squaramide binding sites. These results are supported by molecular dynamics simulations in explicit solvent and model membranes. We show that this intramolecular anion recognition leads to effective switching of transport activity in lipid bilayer membranes, in which optimal Z isomer activity is achieved using a combination of fluorine substitution and para-methylene spacer units.
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Affiliation(s)
- Aidan Kerckhoffs
- Department of Chemistry, University of Oxford, Chemistry Research Laboratory, 12 Mansfield Road, Oxford, OX1 3TA, UK.
| | - Zonghua Bo
- Department of Chemistry, University of Oxford, Chemistry Research Laboratory, 12 Mansfield Road, Oxford, OX1 3TA, UK.
| | - Samuel E Penty
- Department of Chemistry, University of Oxford, Chemistry Research Laboratory, 12 Mansfield Road, Oxford, OX1 3TA, UK.
| | - Fernanda Duarte
- Department of Chemistry, University of Oxford, Chemistry Research Laboratory, 12 Mansfield Road, Oxford, OX1 3TA, UK.
| | - Matthew J Langton
- Department of Chemistry, University of Oxford, Chemistry Research Laboratory, 12 Mansfield Road, Oxford, OX1 3TA, UK.
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54
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Utilizing an Amino Acid Scaffold to Construct Heteroditopic Receptors Capable of Interacting with Salts under Interfacial Conditions. Int J Mol Sci 2021; 22:ijms221910754. [PMID: 34639095 PMCID: PMC8509731 DOI: 10.3390/ijms221910754] [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: 08/29/2021] [Revised: 09/28/2021] [Accepted: 09/29/2021] [Indexed: 11/17/2022] Open
Abstract
A 4-nitro-L-phenylalanine scaffold was used to construct effective ion pair receptors capable of binding anions in an enhanced manner with the assistance of alkali metal cations. A benzocrown ether was linked to a receptor platform via the amide function so as to support the squaramide function in anion binding and to allow all three NHs to act simultaneously. The binding properties of the receptors were determined using UV-vis, 1H NMR, 2D NMR, and DOSY spectroscopy in MeCN and in the solid state by X-ray measurements. Ion pair receptor 2 was found to interact with the most strongly with salts, and the removal of its key structural elements was shown to hinder the receptor action. The amide proton was recognized to switch from having involvement in an intramolecular hydrogen bond to interacting with anions upon complexation. Apart from carboxylates, which promote deprotonation, and other monovalent salts creating 1:1 complexes with the receptor, more complex equilibria were established upon the complexation of 2 with sulfates. Receptor 2 was shown to be capable of the extraction of ion pairs from the aqueous to organic phase and of the cation-enhanced transport chloride and sulfate anions across a bulk chloroform membrane. These features may open the door for its use in regulating ion concertation under interfacial conditions and acting as a potential drug to treat channelopathies.
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55
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Kumawat LK, Wynne C, Cappello E, Fisher P, Brennan LE, Strofaldi A, McManus JJ, Hawes CS, Jolliffe KA, Gunnlaugsson T, Elmes RBP. Squaramide-Based Self-Associating Amphiphiles for Anion Recognition. Chempluschem 2021; 86:1058-1068. [PMID: 34351081 PMCID: PMC8456826 DOI: 10.1002/cplu.202100275] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2021] [Revised: 07/08/2021] [Indexed: 12/03/2022]
Abstract
The synthesis and characterisation of two novel self-assembled amphiphiles (SSAs) SQS-1 and SQS-2 are reported. Both compounds, based on the squaramide motif, were fully soluble in a range of solvents and were shown to undergo self-assembly through a range of physical techniques. Self-assembly was shown to favour the formation of crystalline domains on the nanoscale but also fibrillar film formation, as suggested by SEM analysis. Moreover, both SQS-1 and SQS-2 were capable of anion recognition in DMSO solution as demonstrated using 1 H NMR and UV/Vis absorption spectroscopy, but displayed lower binding affinities for various anions when compared against other squaramide based receptors. In more competitive solvent mixtures SQS-1 gave rise to a colourimetric response in the presence of HPO42- that was clearly visible to the naked eye. We anticipate that the observed response is due to the basic nature of the HPO42- anion when compared against other biologically relevant anions.
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Affiliation(s)
- Lokesh K. Kumawat
- Department of ChemistryMaynooth UniversityNational University of IrelandMaynoothCo. KildareIreland
| | - Conor Wynne
- Department of ChemistryMaynooth UniversityNational University of IrelandMaynoothCo. KildareIreland
- Synthesis and Solid State Pharmaceutical Centre (SSPC)Ireland
| | - Emanuele Cappello
- School of ChemistryTrinity Biomedical Sciences Institute (TBSI)Trinity College DublinThe University of DublinDublin 2Ireland
| | - Peter Fisher
- Department of ChemistryMaynooth UniversityNational University of IrelandMaynoothCo. KildareIreland
| | - Luke E. Brennan
- Department of ChemistryMaynooth UniversityNational University of IrelandMaynoothCo. KildareIreland
| | - Alessandro Strofaldi
- Department of ChemistryMaynooth UniversityNational University of IrelandMaynoothCo. KildareIreland
| | - Jennifer J. McManus
- Department of ChemistryMaynooth UniversityNational University of IrelandMaynoothCo. KildareIreland
- HH Wills Physics LaboratoryUniversity of BristolTyndall AvenueBristolBS8 1TLUnited Kingdom
- Synthesis and Solid State Pharmaceutical Centre (SSPC)Ireland
| | - Chris S. Hawes
- School of Chemical and Physical SciencesKeele UniversityKeeleST5 5BGUnited Kingdom
| | | | - Thorfinnur Gunnlaugsson
- School of ChemistryTrinity Biomedical Sciences Institute (TBSI)Trinity College DublinThe University of DublinDublin 2Ireland
- Synthesis and Solid State Pharmaceutical Centre (SSPC)Ireland
| | - Robert B. P. Elmes
- Department of ChemistryMaynooth UniversityNational University of IrelandMaynoothCo. KildareIreland
- Kathleen Lonsdale Institute for Human Health ResearchMaynooth UniversityMaynoothCo. KildareIreland
- Synthesis and Solid State Pharmaceutical Centre (SSPC)Ireland
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56
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Grus T, Lahnif H, Klasen B, Moon ES, Greifenstein L, Roesch F. Squaric Acid-Based Radiopharmaceuticals for Tumor Imaging and Therapy. Bioconjug Chem 2021; 32:1223-1231. [PMID: 34170116 DOI: 10.1021/acs.bioconjchem.1c00305] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Targeting vectors bound to a chelator represent a significant fraction of radiopharmaceuticals used nowadays for diagnostic and therapeutic purposes in nuclear medicine. The use of squaramides as coupling units for chelator and targeting vector helps to circumvent the disadvantages of several common coupling methods. This review gives an overview of the use of squaric acid diesters (SADE) as linking agents. It focuses on the conjugation of cyclic chelators, e.g., DOTA (1,4,7,10-tetraazacyclododecane-1,4,7,10-tetraacetic acid), as well as hybrid chelators like AAZTA5 (6-pentanoic acid-6-amino-1,4-diazepine tetracetic acid) or DATA5m (6-pentanoic acid-6-amino-1,4-diazapine-triacetate) to different targeting vectors, e.g., prostate-specific membrane antigen inhibitors (KuE; PSMAi), fibroblast activation protein inhibitors (FAPi), and monoclonal antibodies (mAbs). An overview of the synthesis, radiolabeling, and in vitro and in vivo behavior of the described structures is given. The unique properties of SADE enable a fast and simple conjugation of chelators to biomolecules, peptides, and small molecules under mild conditions. Furthermore, SA-containing conjugates could not only display similar in vitro characteristics in terms of binding affinity when compared to reference compounds, but may even induce beneficial effects on the pharmacokinetic properties of these radiopharmaceuticals.
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Affiliation(s)
- Tilmann Grus
- Department of Chemistry - TRIGA site, Johannes Gutenberg University Mainz, 55128 Mainz, Germany
| | - Hanane Lahnif
- Department of Chemistry - TRIGA site, Johannes Gutenberg University Mainz, 55128 Mainz, Germany
| | - Benedikt Klasen
- Department of Chemistry - TRIGA site, Johannes Gutenberg University Mainz, 55128 Mainz, Germany
| | - Euy-Sung Moon
- Department of Chemistry - TRIGA site, Johannes Gutenberg University Mainz, 55128 Mainz, Germany
| | - Lukas Greifenstein
- Department of Chemistry - TRIGA site, Johannes Gutenberg University Mainz, 55128 Mainz, Germany
| | - Frank Roesch
- Department of Chemistry - TRIGA site, Johannes Gutenberg University Mainz, 55128 Mainz, Germany
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57
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Han B, He XH, Liu YQ, He G, Peng C, Li JL. Asymmetric organocatalysis: an enabling technology for medicinal chemistry. Chem Soc Rev 2021; 50:1522-1586. [PMID: 33496291 DOI: 10.1039/d0cs00196a] [Citation(s) in RCA: 162] [Impact Index Per Article: 54.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
The efficacy and synthetic versatility of asymmetric organocatalysis have contributed enormously to the field of organic synthesis since the early 2000s. As asymmetric organocatalytic methods mature, they have extended beyond the academia and undergone scale-up for the production of chiral drugs, natural products, and enantiomerically enriched bioactive molecules. This review provides a comprehensive overview of the applications of asymmetric organocatalysis in medicinal chemistry. A general picture of asymmetric organocatalytic strategies in medicinal chemistry is firstly presented, and the specific applications of these strategies in pharmaceutical synthesis are systematically described, with a focus on the preparation of antiviral, anticancer, neuroprotective, cardiovascular, antibacterial, and antiparasitic agents, as well as several miscellaneous bioactive agents. The review concludes with a discussion of the challenges, limitations and future prospects for organocatalytic asymmetric synthesis of medicinally valuable compounds.
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Affiliation(s)
- Bo Han
- State Key Laboratory of Southwestern Chinese Medicine Resources, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China.
| | - Xiang-Hong He
- State Key Laboratory of Southwestern Chinese Medicine Resources, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China.
| | - Yan-Qing Liu
- State Key Laboratory of Southwestern Chinese Medicine Resources, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China.
| | - Gu He
- State Key Laboratory of Biotherapy and Cancer Centre, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Cheng Peng
- State Key Laboratory of Southwestern Chinese Medicine Resources, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China.
| | - Jun-Long Li
- State Key Laboratory of Southwestern Chinese Medicine Resources, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China. and Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province, Sichuan Industrial Institute of Antibiotics, School of Pharmacy, Chengdu University, Chengdu 610106, China.
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58
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Partridge BE, Winegar PH, Han Z, Mirkin CA. Redefining Protein Interfaces within Protein Single Crystals with DNA. J Am Chem Soc 2021; 143:8925-8934. [PMID: 34096291 PMCID: PMC8381744 DOI: 10.1021/jacs.1c04191] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Proteins are exquisite nanoscale building blocks: molecularly pure, chemically addressable, and inherently selective for their evolved function. The organization of proteins into single crystals with high positional, orientational, and translational order results in materials where the location of every atom can be known. However, controlling the organization of proteins is challenging due to the myriad interactions that define protein interfaces within native single crystals. Recently, we discovered that introducing a single DNA-DNA interaction between protein surfaces leads to changes in the packing of proteins within single crystals and the protein-protein interactions (PPIs) that arise. However, modifying specific PPIs to effect deliberate changes to protein packing is an unmet challenge. In this work, we hypothesized that disrupting and replacing a highly conserved PPI with a DNA-DNA interaction would enable protein packing to be modulated by exploiting the programmability of the introduced oligonucleotides. Using concanavalin A (ConA) as a model protein, we circumvent potentially deleterious mutagenesis and exploit the selective binding of ConA toward mannose to noncovalently attach DNA to the protein surface. We show that DNA association eliminates the major PPI responsible for crystallization of native ConA, thereby allowing subtle changes to DNA design (length, complementarity, and attachment position) to program distinct changes to ConA packing, including the realization of three novel crystal structures and the deliberate expansion of ConA packing along a single crystallographic axis. These findings significantly enhance our understanding of how DNA can supersede native PPIs to program protein packing within ordered materials.
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Affiliation(s)
- Benjamin E Partridge
- Department of Chemistry and International Institute for Nanotechnology, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - Peter H Winegar
- Department of Chemistry and International Institute for Nanotechnology, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - Zhenyu Han
- Department of Chemistry and International Institute for Nanotechnology, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - Chad A Mirkin
- Department of Chemistry and International Institute for Nanotechnology, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
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59
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Liu T, den Berk L, Wondergem JAJ, Tong C, Kwakernaak MC, Braak BT, Heinrich D, Water B, Kieltyka RE. Squaramide-Based Supramolecular Materials Drive HepG2 Spheroid Differentiation. Adv Healthc Mater 2021; 10:e2001903. [PMID: 33929772 DOI: 10.1002/adhm.202001903] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2020] [Revised: 03/19/2021] [Indexed: 12/12/2022]
Abstract
A major challenge in the use of HepG2 cell culture models for drug toxicity screening is their lack of maturity in 2D culture. 3D culture in Matrigel promotes the formation of spheroids that express liver-relevant markers, yet they still lack various primary hepatocyte functions. Therefore, alternative matrices where chemical composition and materials properties are controlled to steer maturation of HepG2 spheroids remain desired. Herein, a modular approach is taken based on a fully synthetic and minimalistic supramolecular matrix based on squaramide synthons outfitted with a cell-adhesive peptide, RGD for 3D HepG2 spheroid culture. Co-assemblies of RGD-functionalized squaramide-based and native monomers resulted in soft and self-recovering supramolecular hydrogels with a tunable RGD concentration. HepG2 spheroids are self-assembled and grown (≈150 µm) within the supramolecular hydrogels with high cell viability and differentiation over 21 days of culture. Importantly, significantly higher mRNA and protein expression levels of phase I and II metabolic enzymes, drug transporters, and liver markers are found for the squaramide hydrogels in comparison to Matrigel. Overall, the fully synthetic squaramide hydrogels are proven to be synthetically accessible and effective for HepG2 differentiation showcasing the potential of this supramolecular matrix to rival and replace naturally-derived materials classically used in high-throughput toxicity screening.
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Affiliation(s)
- Tingxian Liu
- Department of Supramolecular and Biomaterials Chemistry Leiden Institute of Chemistry Leiden University P.O. Box 9502 Leiden 2300 RA Netherlands
| | - Linda den Berk
- Division of Drug Discovery and Safety Leiden Academic Centre for Drug Research Leiden University P.O. Box 9502 Leiden 2300 RA Netherlands
| | - Joeri A. J. Wondergem
- Department of Physics Huygens‐Kamerlingh Onnes Laboratory Leiden University Leiden 2300 RA Netherlands
- Fraunhofer Institute for Silicate Research ISC Neunerplatz 2 Würzburg 97082 Germany
| | - Ciqing Tong
- Department of Supramolecular and Biomaterials Chemistry Leiden Institute of Chemistry Leiden University P.O. Box 9502 Leiden 2300 RA Netherlands
| | - Markus C. Kwakernaak
- Department of Supramolecular and Biomaterials Chemistry Leiden Institute of Chemistry Leiden University P.O. Box 9502 Leiden 2300 RA Netherlands
| | - Bas ter Braak
- Division of Drug Discovery and Safety Leiden Academic Centre for Drug Research Leiden University P.O. Box 9502 Leiden 2300 RA Netherlands
| | - Doris Heinrich
- Department of Physics Huygens‐Kamerlingh Onnes Laboratory Leiden University Leiden 2300 RA Netherlands
- Fraunhofer Institute for Silicate Research ISC Neunerplatz 2 Würzburg 97082 Germany
| | - Bob Water
- Division of Drug Discovery and Safety Leiden Academic Centre for Drug Research Leiden University P.O. Box 9502 Leiden 2300 RA Netherlands
| | - Roxanne E. Kieltyka
- Department of Supramolecular and Biomaterials Chemistry Leiden Institute of Chemistry Leiden University P.O. Box 9502 Leiden 2300 RA Netherlands
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60
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Bauer MR, Di Fruscia P, Lucas SCC, Michaelides IN, Nelson JE, Storer RI, Whitehurst BC. Put a ring on it: application of small aliphatic rings in medicinal chemistry. RSC Med Chem 2021; 12:448-471. [PMID: 33937776 PMCID: PMC8083977 DOI: 10.1039/d0md00370k] [Citation(s) in RCA: 143] [Impact Index Per Article: 47.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2020] [Accepted: 12/18/2020] [Indexed: 12/15/2022] Open
Abstract
Aliphatic three- and four-membered rings including cyclopropanes, cyclobutanes, oxetanes, azetidines and bicyclo[1.1.1]pentanes have been increasingly exploited in medicinal chemistry for their beneficial physicochemical properties and applications as functional group bioisosteres. This review provides a historical perspective and comparative up to date overview of commonly applied small rings, exemplifying key principles with recent literature examples. In addition to describing the merits and advantages of each ring system, potential hazards and liabilities are also illustrated and explained, including any significant chemical or metabolic stability and toxicity risks.
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Affiliation(s)
- Matthias R Bauer
- Discovery Sciences, BioPharmaceuticals R&D, AstraZeneca Cambridge UK
| | - Paolo Di Fruscia
- Discovery Sciences, BioPharmaceuticals R&D, AstraZeneca Cambridge UK
| | - Simon C C Lucas
- Discovery Sciences, BioPharmaceuticals R&D, AstraZeneca Cambridge UK
| | | | - Jennifer E Nelson
- Discovery Sciences, BioPharmaceuticals R&D, AstraZeneca Cambridge UK
| | - R Ian Storer
- Discovery Sciences, BioPharmaceuticals R&D, AstraZeneca Cambridge UK
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61
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Lane JDE, Berry SN, Lewis W, Ho J, Jolliffe KA. Diaminomethylenemalononitriles and Diaminomethyleneindanediones as Dual Hydrogen Bond Donors for Anion Recognition. J Org Chem 2021; 86:4957-4964. [PMID: 33755453 DOI: 10.1021/acs.joc.0c02801] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Diaminomethylenemalononitriles (DMMs) and diaminomethyleneindanediones (DMIs) are dual H-bond donors that have previously been used as organocatalysts, but their anion binding ability has not been investigated. We report the synthesis of both alkyl- and aryl-substituted DMMs and DMIs, together with a comparison of their anion binding ability with that of the analogous thioureas. The DMMs display affinity for monovalent anions, with similar anion binding affinities observed to that of the thioureas in acetonitrile, albeit with differing trends for the N,N'-dialkyl versus N,N'-diaryl compounds. In contrast, the DMIs do not bind to monovalent anions under similar conditions as a result of conformational locking through the formation of intramolecular H-bonds. This can be overcome upon addition of sulfate ions, and binding of sulfate is enhanced in a more competitive solvent (DMSO).
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Affiliation(s)
- Jakob D E Lane
- School of Chemistry, The University of Sydney, Sydney, NSW 2006, Australia
| | - Stuart N Berry
- School of Chemistry, The University of Sydney, Sydney, NSW 2006, Australia
| | - William Lewis
- School of Chemistry, The University of Sydney, Sydney, NSW 2006, Australia.,Sydney Analytical, The University of Sydney, Sydney, NSW 2006, Australia
| | - Junming Ho
- School of Chemistry, University of New South Wales, Sydney, NSW 2052, Australia
| | - Katrina A Jolliffe
- School of Chemistry, The University of Sydney, Sydney, NSW 2006, Australia.,The University of Sydney Nano Institute (Sydney Nano), The University of Sydney, Sydney, NSW 2006, Australia
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62
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Zaleskaya M, Jagleniec D, Romański J. Macrocyclic squaramides as ion pair receptors and fluorescent sensors selective towards sulfates. Dalton Trans 2021; 50:3904-3915. [PMID: 33635308 DOI: 10.1039/d0dt04273k] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Through the high dilution technique, we obtained macrocyclic ion pair receptors R1 and R2, an anion receptor R3, and a fluorescent sensor R4 using a combination of particular members of simple libraries consisting of synthesized diamines and methyl squarates, respectively. The receptors were investigated in terms of anion and ion pair binding using the 1H NMR titration method in DMSO-d6. We found that the major contribution to the anion binding comes from the interaction with the squaramide protons rather than with the amide functions of the receptors. The receptors demonstrated the highest affinity towards benzoates and sulfates over the anions tested, and in the case of sulfate binding more complex equilibria in solution were observed. Unlike the anion receptor R3, the ion pair receptor R1 was found to recognize anions in an enhanced manner with the assistance of sodium or potassium cations. Tethering of a simple fluorophore in close proximity to the amide function of receptor R4 resulted in an optical ion pair sensor selective towards sulfates. DFT calculations carried out for the 1 : 1 complexes of R3 with the anions helped clarify this selectivity, showing more effective participation of tetrahedral sulfate anions in binding with the amide function than in the case of benzoates or chlorides.
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Affiliation(s)
- Marta Zaleskaya
- Faculty of Chemistry, University of Warsaw, Pasteura 1, PL 02-093 Warsaw, Poland.
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63
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Picci G, Milia J, Aragoni MC, Arca M, Coles SJ, Garau A, Lippolis V, Montis R, Orton JB, Caltagirone C. Switching-On Fluorescence by Copper (II) and Basic Anions: A Case Study with a Pyrene-Functionalized Squaramide. Molecules 2021; 26:molecules26051301. [PMID: 33670937 PMCID: PMC7957675 DOI: 10.3390/molecules26051301] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2021] [Revised: 02/16/2021] [Accepted: 02/22/2021] [Indexed: 12/12/2022] Open
Abstract
The new symmetric acyclic N,N’-bis(1-pyrenyl) squaramide (H2L) functionalized with the pyrene moiety as a fluorogenic fragment has been designed and its ability to selectively detect specific anions and metals investigated. H2L selectively binds Cl− both in solution (DMSO 0.5% H2O and MeCN) and in the solid state, and allows to selectively detect Cu2+ in MeCN with the formation of a 2:1 metal-receptor complex, with a green intense emission appreciable by naked eye under the UV lamp. The H2L copper complex preserves its emission properties in the presence of Cl−. The addition of basic anions (OH−, CN−, and F−) up to 10 equivalents caused the deprotonation of the squaramide NHs and a dramatic change of the emission properties of the H2L copper complex.
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Affiliation(s)
- Giacomo Picci
- Dipartimento di Scienze Chimiche e Geologiche, Università degli Studi di Cagliari, S.S. 554 bivio per Sestu, 09042 Monserrato, Cagliari, Italy; (J.M.); (M.C.A.); (M.A.); (A.G.); (V.L.)
- Correspondence: (G.P.); (C.C.); Tel.: +39-070-675-4452 (C.C.)
| | - Jessica Milia
- Dipartimento di Scienze Chimiche e Geologiche, Università degli Studi di Cagliari, S.S. 554 bivio per Sestu, 09042 Monserrato, Cagliari, Italy; (J.M.); (M.C.A.); (M.A.); (A.G.); (V.L.)
| | - Maria Carla Aragoni
- Dipartimento di Scienze Chimiche e Geologiche, Università degli Studi di Cagliari, S.S. 554 bivio per Sestu, 09042 Monserrato, Cagliari, Italy; (J.M.); (M.C.A.); (M.A.); (A.G.); (V.L.)
| | - Massimiliano Arca
- Dipartimento di Scienze Chimiche e Geologiche, Università degli Studi di Cagliari, S.S. 554 bivio per Sestu, 09042 Monserrato, Cagliari, Italy; (J.M.); (M.C.A.); (M.A.); (A.G.); (V.L.)
| | - Simon J. Coles
- National Crystallography Service, Department of Chemistry, University of Southampton, Highfield, Southampton SO17 1BJ, UK; (S.J.C.); (J.B.O.)
| | - Alessandra Garau
- Dipartimento di Scienze Chimiche e Geologiche, Università degli Studi di Cagliari, S.S. 554 bivio per Sestu, 09042 Monserrato, Cagliari, Italy; (J.M.); (M.C.A.); (M.A.); (A.G.); (V.L.)
| | - Vito Lippolis
- Dipartimento di Scienze Chimiche e Geologiche, Università degli Studi di Cagliari, S.S. 554 bivio per Sestu, 09042 Monserrato, Cagliari, Italy; (J.M.); (M.C.A.); (M.A.); (A.G.); (V.L.)
| | - Riccardo Montis
- Department of Chemical Engineering and Analytical Science, The University of Manchester, Oxford Road, Manchester M13 9PL, UK;
| | - James B. Orton
- National Crystallography Service, Department of Chemistry, University of Southampton, Highfield, Southampton SO17 1BJ, UK; (S.J.C.); (J.B.O.)
| | - Claudia Caltagirone
- Dipartimento di Scienze Chimiche e Geologiche, Università degli Studi di Cagliari, S.S. 554 bivio per Sestu, 09042 Monserrato, Cagliari, Italy; (J.M.); (M.C.A.); (M.A.); (A.G.); (V.L.)
- Correspondence: (G.P.); (C.C.); Tel.: +39-070-675-4452 (C.C.)
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64
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Kottisch V, Jermaks J, Mak JY, Woltornist RA, Lambert TH, Fors BP. Hydrogen Bond Donor Catalyzed Cationic Polymerization of Vinyl Ethers. Angew Chem Int Ed Engl 2021; 60:4535-4539. [PMID: 33137229 PMCID: PMC8145790 DOI: 10.1002/anie.202013419] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2020] [Indexed: 12/20/2022]
Abstract
The synthesis of high-molecular-weight poly(vinyl ethers) under mild conditions is a significant challenge, since cationic polymerization reactions are highly sensitive to chain-transfer and termination events. We identified a novel and highly effective hydrogen bond donor (HBD)-organic acid pair that can facilitate controlled cationic polymerization of vinyl ethers under ambient conditions with excellent monomer compatibility. Poly(vinyl ethers) of molar masses exceeding 50 kg mol-1 can be produced within 1 h without elaborate reagent purification. Modification of the HBD structure allowed tuning of the polymerization rate, while DFT calculations helped elucidate crucial intermolecular interactions between the HBD, organic acid, and polymer chain end.
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Affiliation(s)
- Veronika Kottisch
- Department of Chemistry and Chemical Biology, Baker Lab, Cornell University, Ithaca, NY, 14853, USA
| | - Janis Jermaks
- Department of Chemistry and Chemical Biology, Baker Lab, Cornell University, Ithaca, NY, 14853, USA
| | - Joe-Yee Mak
- Department of Chemistry and Chemical Biology, Baker Lab, Cornell University, Ithaca, NY, 14853, USA
| | - Ryan A Woltornist
- Department of Chemistry and Chemical Biology, Baker Lab, Cornell University, Ithaca, NY, 14853, USA
| | - Tristan H Lambert
- Department of Chemistry and Chemical Biology, Baker Lab, Cornell University, Ithaca, NY, 14853, USA
| | - Brett P Fors
- Department of Chemistry and Chemical Biology, Baker Lab, Cornell University, Ithaca, NY, 14853, USA
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65
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Orvay F, Cerdá J, Rotger C, Ortí E, Aragó J, Costa A, Soberats B. Influence of the Z/E Isomerism on the Pathway Complexity of a Squaramide-Based Macrocycle. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2021; 17:e2006133. [PMID: 33448095 DOI: 10.1002/smll.202006133] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/01/2020] [Revised: 11/25/2020] [Indexed: 05/25/2023]
Abstract
The rising interest on pathway complexity in supramolecular polymerization has prompted the finding of novel monomer designs able to stabilize kinetically trapped species and generate supramolecular polymorphs. In the present work, the exploitation of the Z/E (geometrical) isomerism of squaramide (SQ) units to produce various self-assembled isoforms and complex supramolecular polymerization pathways in methylcyclohexane/CHCl3 mixtures is reported for the first time. This is achieved by using a new bissquaramidic macrocycle (MSq) that self-assembles into two markedly different thermodynamic aggregates, AggA (discrete cyclic structures) and AggB (fibrillar structures), depending on the solvent composition and concentration. Remarkably, UV-vis, 1 H NMR, and FT-IR experiments together with quantum-chemical calculations indicate that these two distinct aggregates are formed via two different hydrogen bonding patterns (side-to-side in AggA and head-to-tail in AggB) due to different conformations in the SQ units (Z,E in AggA and Z,Z in AggB). The ability of MSq to supramolecularly polymerize into two distinct aggregates is utilized to induce the kinetic-to-thermodynamic transformation from AggA to AggB, which occurs via an on-pathway mechanism. It is believed that this system provides new insights for the design of potential supramolecular polymorphic materials by using squaramide units.
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Affiliation(s)
- Francisca Orvay
- Department of Chemistry, University of the Balearic Islands, Cra. Valldemossa, Km. 7.5, Palma de Mallorca, 07122, Spain
| | - Jesús Cerdá
- Instituto de Ciencia Molecular, Universidad de Valencia, Paterna, 46980, Spain
| | - Carmen Rotger
- Department of Chemistry, University of the Balearic Islands, Cra. Valldemossa, Km. 7.5, Palma de Mallorca, 07122, Spain
| | - Enrique Ortí
- Instituto de Ciencia Molecular, Universidad de Valencia, Paterna, 46980, Spain
| | - Juan Aragó
- Instituto de Ciencia Molecular, Universidad de Valencia, Paterna, 46980, Spain
| | - Antonio Costa
- Department of Chemistry, University of the Balearic Islands, Cra. Valldemossa, Km. 7.5, Palma de Mallorca, 07122, Spain
| | - Bartolome Soberats
- Department of Chemistry, University of the Balearic Islands, Cra. Valldemossa, Km. 7.5, Palma de Mallorca, 07122, Spain
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66
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García-Urricelqui A, de Cózar A, Mielgo A, Palomo C. Probing α-Amino Aldehydes as Weakly Acidic Pronucleophiles: Direct Access to Quaternary α-Amino Aldehydes by an Enantioselective Michael Addition Catalyzed by Brønsted Bases. Chemistry 2021; 27:2483-2492. [PMID: 33034390 DOI: 10.1002/chem.202004468] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2020] [Indexed: 12/20/2022]
Abstract
The high tendency of α-amino aldehydes to undergo 1,2-additions and their relatively low stability under basic conditions have largely prevented their use as pronucleophiles in the realm of asymmetric catalysis, particularly for the production of quaternary α-amino aldehydes. Herein, it is demonstrated that the chemistry of α-amino aldehydes may be expanded beyond these limits by documenting the first direct α-alkylation of α-branched α-amino aldehydes with nitroolefins. The reaction produces densely functionalized products bearing up to two, quaternary and tertiary, vicinal stereocenters with high diastereo- and enantioselectivity. DFT modeling leads to the proposal that intramolecular hydrogen bonding between the NH group and the carbonyl oxygen atom in the starting α-amino aldehyde is key for reaction stereocontrol.
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Affiliation(s)
- Ane García-Urricelqui
- Departamento de Química Orgánica I, Universidad del País Vasco UPV/EHU, Manuel Lardizábal 3, 20018, San Sebastián, Spain
| | - Abel de Cózar
- Departamento de Química Orgánica I, Universidad del País Vasco UPV/EHU, Manuel Lardizábal 3, 20018, San Sebastián, Spain.,IKERBASQUE, Basque Foundation for Science, 48009, Bilbao, Spain
| | - Antonia Mielgo
- Departamento de Química Orgánica I, Universidad del País Vasco UPV/EHU, Manuel Lardizábal 3, 20018, San Sebastián, Spain
| | - Claudio Palomo
- Departamento de Química Orgánica I, Universidad del País Vasco UPV/EHU, Manuel Lardizábal 3, 20018, San Sebastián, Spain
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67
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Mała ŻA, Janicki MJ, Niedźwiecka NH, Góra RW, Konieczny KA, Kowalczyk R. Stereoselectivity Enhancement During the Generation of Three Contiguous Stereocenters in Tetrahydrothiophenes. ChemCatChem 2021. [DOI: 10.1002/cctc.202001583] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Żaneta A. Mała
- Bioorganic Chemistry Faculty of Chemistry Wrocław University of Science and Technology Wybrzeże Wyspiańskiego 27 50-370 Wrocław Poland
| | - Mikołaj J. Janicki
- Physical and Quantum Chemistry Faculty of Chemistry Wrocław University of Science and Technology Wybrzeże Wyspiańskiego 27 50-370 Wrocław Poland
| | - Natalia H. Niedźwiecka
- Bioorganic Chemistry Faculty of Chemistry Wrocław University of Science and Technology Wybrzeże Wyspiańskiego 27 50-370 Wrocław Poland
| | - Robert W. Góra
- Physical and Quantum Chemistry Faculty of Chemistry Wrocław University of Science and Technology Wybrzeże Wyspiańskiego 27 50-370 Wrocław Poland
| | - Krzysztof A. Konieczny
- Faculty of Chemistry Wrocław University of Science and Technology Wybrzeże Wyspiańskiego 27 50-370 Wrocław Poland
| | - Rafał Kowalczyk
- Bioorganic Chemistry Faculty of Chemistry Wrocław University of Science and Technology Wybrzeże Wyspiańskiego 27 50-370 Wrocław Poland
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68
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López R, Palomo C. N,N-Diacylaminals as Emerging Tools in Synthesis: From Peptidomimetics to Asymmetric Catalysis. Chemistry 2021; 27:20-29. [PMID: 32667706 DOI: 10.1002/chem.202002637] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2020] [Revised: 07/12/2020] [Indexed: 12/26/2022]
Abstract
N,N-Diacylaminals are flexible molecular scaffolds that have commonly been utilized as amide surrogates in peptidomimetics. The singularities of this motif as an N-acyl imine equivalent and as hydrogen-bond donor have recently opened new synthetic opportunities, especially in the field of asymmetric catalysis. This concept article highlights this diverse synthetic potential and provides the elements necessary for further developments.
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Affiliation(s)
- Rosa López
- Departamento de Química Orgánica I, Facultad de Química, Universidad del País Vasco (UPV/EHU), Manuel de Lardizabal 3, 20018, San Sebastián, Spain
| | - Claudio Palomo
- Departamento de Química Orgánica I, Facultad de Química, Universidad del País Vasco (UPV/EHU), Manuel de Lardizabal 3, 20018, San Sebastián, Spain
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69
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Singh A, Singh RK, Patwari GN. Hierarchy of π-stacking determines the conformational preferences of bis-squaramates. CrystEngComm 2021. [DOI: 10.1039/d1ce00623a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Orientation of squaramate dimers in crystal structures is tuned by varying the degree of cooperativity between hydrogen bonding and π-stacking.
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Affiliation(s)
- Abhishek Singh
- IITB-Monash Research Academy
- Indian Institute of Technology Bombay
- Mumbai 400 076
- India
| | - Reman Kumar Singh
- Department of Chemistry
- Indian Institute of Technology Bombay
- Mumbai 400076
- India
| | - G. Naresh Patwari
- Department of Chemistry
- Indian Institute of Technology Bombay
- Mumbai 400076
- India
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70
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Vieira Silveira E, Montecinos R, Scorsin L, Garcia-Rio L, Medeiros M, Nascimento V, Nome F, Affeldt RF, Micke GA. Supramolecular kinetic effects by pillararenes: the synergism between spatiotemporal and preorganization concepts in decarboxylation reactions. NEW J CHEM 2021. [DOI: 10.1039/d1nj00551k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Spatiotemporal and preorganization factors were both responsible for the catalytic and inhibitory supramolecular effects in decarboxylation reactions.
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Affiliation(s)
| | - Rodrigo Montecinos
- Faculdad de Química
- Pontificia Universidad Católica de Chile
- Santiago
- Chile
| | - Leandro Scorsin
- Department of Chemistry
- Federal University of Santa Catarina
- Florianópolis
- Brazil
| | - Luis Garcia-Rio
- Departamento de Química Física
- Centro de Investigación en Química Biolóxica e Materiais Moleculares (CIQUS)
- Universidade de Santiago de Compostela
- 15782 Santiago de Compostela
- Spain
| | - Michelle Medeiros
- Department of Chemistry
- Federal University of Santa Catarina
- Florianópolis
- Brazil
| | - Vanessa Nascimento
- Department of Organic Chemistry
- Fluminense Federal University
- Niterói
- Brazil
| | - Faruk Nome
- Department of Chemistry
- Federal University of Santa Catarina
- Florianópolis
- Brazil
| | - Ricardo F. Affeldt
- Department of Chemistry
- Federal University of Santa Catarina
- Florianópolis
- Brazil
| | - Gustavo A. Micke
- Department of Chemistry
- Federal University of Santa Catarina
- Florianópolis
- Brazil
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71
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Ximenis M, Sampedro A, Martínez-Crespo L, Ramis G, Orvay F, Costa A, Rotger C. Introducing a squaramide-based self-immolative spacer for controlled drug release. Chem Commun (Camb) 2021; 57:2736-2739. [DOI: 10.1039/d0cc07683j] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Herein we report the design, synthesis and assessment of the first example of a squaramide-based self-immolative system triggered by an enzymatic reduction.
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Affiliation(s)
- Marta Ximenis
- Universitat de les Illes Balears
- Cra. Valldemossa Km 7.5
- Palma de Mallorca 07122
- Spain
| | - Angel Sampedro
- Universitat de les Illes Balears
- Cra. Valldemossa Km 7.5
- Palma de Mallorca 07122
- Spain
| | - Luis Martínez-Crespo
- Universitat de les Illes Balears
- Cra. Valldemossa Km 7.5
- Palma de Mallorca 07122
- Spain
| | - Guillem Ramis
- Institut Universitari d’Investigació en Ciències de la Salut (IUNICS)
- Universitat de les Illes Balears, and Institut d’Investigació Sanitària Illes Balears (IdISBa)
- Cra. Valldemossa Km 7.5
- Palma
- Spain
| | - Francisca Orvay
- Universitat de les Illes Balears
- Cra. Valldemossa Km 7.5
- Palma de Mallorca 07122
- Spain
| | - Antonio Costa
- Universitat de les Illes Balears
- Cra. Valldemossa Km 7.5
- Palma de Mallorca 07122
- Spain
| | - Carmen Rotger
- Universitat de les Illes Balears
- Cra. Valldemossa Km 7.5
- Palma de Mallorca 07122
- Spain
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72
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Kottisch V, Jermaks J, Mak J, Woltornist RA, Lambert TH, Fors BP. Hydrogen Bond Donor Catalyzed Cationic Polymerization of Vinyl Ethers. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202013419] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Veronika Kottisch
- Department of Chemistry and Chemical Biology Baker Lab Cornell University Ithaca NY 14853 USA
| | - Janis Jermaks
- Department of Chemistry and Chemical Biology Baker Lab Cornell University Ithaca NY 14853 USA
| | - Joe‐Yee Mak
- Department of Chemistry and Chemical Biology Baker Lab Cornell University Ithaca NY 14853 USA
| | - Ryan A. Woltornist
- Department of Chemistry and Chemical Biology Baker Lab Cornell University Ithaca NY 14853 USA
| | - Tristan H. Lambert
- Department of Chemistry and Chemical Biology Baker Lab Cornell University Ithaca NY 14853 USA
| | - Brett P. Fors
- Department of Chemistry and Chemical Biology Baker Lab Cornell University Ithaca NY 14853 USA
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73
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Highly Efficient, Tripodal Ion-Pair Receptors for Switching Selectivity between Acetates and Sulfates Using Solid-Liquid and Liquid-Liquid Extractions. Int J Mol Sci 2020; 21:ijms21249465. [PMID: 33322738 PMCID: PMC7764408 DOI: 10.3390/ijms21249465] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2020] [Revised: 12/07/2020] [Accepted: 12/09/2020] [Indexed: 11/18/2022] Open
Abstract
A tripodal, squaramide-based ion-pair receptor 1 was synthesized in a modular fashion, and 1H NMR and UV-vis studies revealed its ability to interact more efficiently with anions with the assistance of cations. The reference tripodal anion receptor 2, lacking a crown ether unit, was found to lose the enhancement in anion binding induced by presence of cations. Besides the ability to bind anions in enhanced manner by the “single armed” ion-pair receptor 3, the lack of multiple and prearranged binding sites resulted in its much lower affinity towards anions than in the case of tripodal receptors. Unlike with receptors 2 or 3, the high affinity of 1 towards salts opens up the possibility of extracting extremely hydrophilic sulfate anions from aqueous to organic phase. The disparity in receptor 1 binding modes towards monovalent anions and divalent sulfates assures its selectivity towards sulfates over other lipophilic salts upon liquid–liquid extraction (LLE) and enables the Hofmeister bias to be overcome. By changing the extraction conditions from LLE to SLE (solid–liquid extraction), a switch of selectivity from sulfates to acetates was achieved. X-ray measurements support the ability of anion binding by cooperation of the arms of receptor 1 together with simultaneous binding of cations.
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74
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Saez Talens V, Davis J, Wu CH, Wen Z, Lauria F, Gupta KBSS, Rudge R, Boraghi M, Hagemeijer A, Trinh TT, Englebienne P, Voets IK, Wu JI, Kieltyka RE. Thiosquaramide-Based Supramolecular Polymers: Aromaticity Gain in a Switched Mode of Self-Assembly. J Am Chem Soc 2020; 142:19907-19916. [PMID: 33191746 PMCID: PMC7705886 DOI: 10.1021/jacs.0c02081] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Despite a growing understanding of factors that drive monomer self-assembly to form supramolecular polymers, the effects of aromaticity gain have been largely ignored. Herein, we document the aromaticity gain in two different self-assembly modes of squaramide-based bolaamphiphiles. Importantly, O → S substitution in squaramide synthons resulted in supramolecular polymers with increased fiber flexibility and lower degrees of polymerization. Computations and spectroscopic experiments suggest that the oxo- and thiosquaramide bolaamphiphiles self-assemble into "head-to-tail" versus "stacked" arrangements, respectively. Computed energetic and magnetic criteria of aromaticity reveal that both modes of self-assembly increase the aromatic character of the squaramide synthons, giving rise to stronger intermolecular interactions in the resultant supramolecular polymer structures. These examples suggest that both hydrogen-bonding and stacking interactions can result in increased aromaticity upon self-assembly, highlighting its relevance in monomer design.
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Affiliation(s)
- Victorio Saez Talens
- Supramolecular and Biomaterials Chemistry, Leiden Institute of Chemistry, Leiden University, P.O. Box 9502, 2300 RA, Leiden, The Netherlands
| | - Joyal Davis
- Supramolecular and Biomaterials Chemistry, Leiden Institute of Chemistry, Leiden University, P.O. Box 9502, 2300 RA, Leiden, The Netherlands
| | - Chia-Hua Wu
- Department of Chemistry, University of Houston, Houston, Texas 77204, United States
| | - Zhili Wen
- Department of Chemistry, University of Houston, Houston, Texas 77204, United States
| | - Francesca Lauria
- Supramolecular and Biomaterials Chemistry, Leiden Institute of Chemistry, Leiden University, P.O. Box 9502, 2300 RA, Leiden, The Netherlands
| | - Karthick Babu Sai Sankar Gupta
- Supramolecular and Biomaterials Chemistry, Leiden Institute of Chemistry, Leiden University, P.O. Box 9502, 2300 RA, Leiden, The Netherlands
| | - Raisa Rudge
- Supramolecular and Biomaterials Chemistry, Leiden Institute of Chemistry, Leiden University, P.O. Box 9502, 2300 RA, Leiden, The Netherlands
| | - Mahsa Boraghi
- Department of Chemistry, University of Houston, Houston, Texas 77204, United States
| | - Alexander Hagemeijer
- Supramolecular and Biomaterials Chemistry, Leiden Institute of Chemistry, Leiden University, P.O. Box 9502, 2300 RA, Leiden, The Netherlands
| | - Thuat T Trinh
- Department of Chemistry, Norwegian University of Science and Technology, 7491 Trondheim, Norway
| | - Pablo Englebienne
- Process & Energy Laboratory, Delft University of Technology, Leeghwaterstraat 39, 2628 CB Delft, The Netherlands
| | - Ilja K Voets
- Laboratory of Self-Organizing Soft Matter and Institute for Complex Molecular Systems, Eindhoven University of Technology, P.O. Box 513, 5600 MD, Eindhoven, The Netherlands
| | - Judy I Wu
- Department of Chemistry, University of Houston, Houston, Texas 77204, United States
| | - Roxanne E Kieltyka
- Supramolecular and Biomaterials Chemistry, Leiden Institute of Chemistry, Leiden University, P.O. Box 9502, 2300 RA, Leiden, The Netherlands
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75
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Auria‐Luna F, Mohammadi S, Divar M, Gimeno MC, Herrera RP. Asymmetric Fluorination Reactions promoted by Chiral Hydrogen Bonding‐based Organocatalysts. Adv Synth Catal 2020. [DOI: 10.1002/adsc.202000848] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Fernando Auria‐Luna
- Laboratorio de Organocatálisis Asimétrica. Departamento de Química Orgánica. Instituto de Síntesis Química y Catálisis Homogénea (ISQCH) CSIC- Universidad de Zaragoza. C/ Pedro Cerbuna 12 50009 Zaragoza Spain)
| | - Somayeh Mohammadi
- Medicinal & Natural Products Chemistry Research Center Shiraz University of Medical Sciences. 7134853734 Shiraz (Iran)
| | - Masoumeh Divar
- Medicinal & Natural Products Chemistry Research Center Shiraz University of Medical Sciences. 7134853734 Shiraz (Iran)
| | - M. Concepción Gimeno
- Departamento de Química Inorgánica. Instituto de Síntesis Química y Catálisis Homogénea (ISQCH) CSIC- Universidad de Zaragoza. C/ Pedro Cerbuna 12 50009 Zaragoza Spain)
| | - Raquel P. Herrera
- Laboratorio de Organocatálisis Asimétrica. Departamento de Química Orgánica. Instituto de Síntesis Química y Catálisis Homogénea (ISQCH) CSIC- Universidad de Zaragoza. C/ Pedro Cerbuna 12 50009 Zaragoza Spain)
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76
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Chasák J, Šlachtová V, Urban M, Brulíková L. Squaric acid analogues in medicinal chemistry. Eur J Med Chem 2020; 209:112872. [PMID: 33035923 DOI: 10.1016/j.ejmech.2020.112872] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2020] [Revised: 09/12/2020] [Accepted: 09/21/2020] [Indexed: 12/16/2022]
Abstract
In this review, we summarize the published data on squaric acid analogues with a special focus on their use in medicinal chemistry and as potential drugs. Squaric acid is an interesting small molecule with an almost perfectly square shape, and its analogues have a variety of biological activities that are enabled by the presence of significant H-bond donors and acceptors. Unfortunately, most of these compounds also exhibit reactive functionalities, and this deters the majority of medicinal chemists and pharmacologists from trying to use them in drug development. However, this group of compounds is experiencing a renaissance, and large numbers of them are being tested for antiprotozoal, antibacterial, antifungal, and antiviral activities. The most useful of these compounds exhibited IC50 values in the nanomolar range, which makes them promising drug candidates. In addition to these activities, their interactions with living systems were intensively explored, revealing that squaric acid analogues inhibit various enzymes and often serve as receptor antagonists and that the squaric acid moiety may be used as a non-classical isosteric replacement for other functional groups such as carboxylate. In summary, this review is focused on squaric acid and its analogues and their use in medicinal chemistry and should serve as a guide for other researchers in the field to demonstrate the potential of these compounds based on previous research.
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Affiliation(s)
- Jan Chasák
- Department of Organic Chemistry, Faculty of Science, Palacky University Olomouc, 17. listopadu 12, 771 46, Olomouc, Czech Republic
| | - Veronika Šlachtová
- Department of Organic Chemistry, Faculty of Science, Palacky University Olomouc, 17. listopadu 12, 771 46, Olomouc, Czech Republic
| | - Milan Urban
- Medicinal Chemistry, Institute of Molecular and Translational Medicine, Faculty of Medicine and Dentistry, Palacky University in Olomouc, Hněvotínská 5, 779 00, Olomouc, Czech Republic
| | - Lucie Brulíková
- Department of Organic Chemistry, Faculty of Science, Palacky University Olomouc, 17. listopadu 12, 771 46, Olomouc, Czech Republic.
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77
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Zaleskaya M, Karbarz M, Wilczek M, Dobrzycki Ł, Romański J. Cooperative Transport and Selective Extraction of Sulfates by a Squaramide-Based Ion Pair Receptor: A Case of Adaptable Selectivity. Inorg Chem 2020; 59:13749-13759. [PMID: 32885659 PMCID: PMC7509838 DOI: 10.1021/acs.inorgchem.0c02114] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2020] [Indexed: 11/30/2022]
Abstract
The use of a squaramide-based ion pair receptor offers a solution to the very challenging problem of extraction and transport of extremely hydrated sulfate salt. Herein we demonstrate for the first time that a neutral receptor is able not only to selectively extract but also to transport sulfates in the form of an alkali metal salt across membranes and to do so in a cooperative manner while overcoming the Hofmeister bias. This was made possible by an enhancement in anion binding promoted by cation assistance and by diversifying the stoichiometry of receptor complexes with sulfates and other ions. The existence of a peculiar 4:1 complex of receptor 2 with sulfates in solution was confirmed by UV-vis and 1H NMR titration experiments, DOSY and DLS measurements, and supported by solid-state X-ray measurements. By varying the separation technique and experimental conditions, it was possible to switch the depletion of the aqueous layer into extremely hydrophilic or less lipophilic salts, thus obtaining the desired selectivity.
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Affiliation(s)
- Marta Zaleskaya
- Faculty of Chemistry, University of Warsaw, Pasteura 1, PL 02-093 Warsaw, Poland
| | - Marcin Karbarz
- Faculty of Chemistry, University of Warsaw, Pasteura 1, PL 02-093 Warsaw, Poland
| | - Marcin Wilczek
- Faculty of Chemistry, University of Warsaw, Pasteura 1, PL 02-093 Warsaw, Poland
| | - Łukasz Dobrzycki
- Faculty of Chemistry, University of Warsaw, Pasteura 1, PL 02-093 Warsaw, Poland
| | - Jan Romański
- Faculty of Chemistry, University of Warsaw, Pasteura 1, PL 02-093 Warsaw, Poland
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78
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Agnew-Francis KA, Williams CM. Squaramides as Bioisosteres in Contemporary Drug Design. Chem Rev 2020; 120:11616-11650. [DOI: 10.1021/acs.chemrev.0c00416] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Kylie A. Agnew-Francis
- School of Chemistry and Molecular Biosciences, University of Queensland, Brisbane, Queensland 4072, Australia
| | - Craig M. Williams
- School of Chemistry and Molecular Biosciences, University of Queensland, Brisbane, Queensland 4072, Australia
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79
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Ramos J, Arufe S, Martin H, Rooney D, Elmes RBP, Erxleben A, Moreira R, Velasco-Torrijos T. Glycosyl squaramides, a new class of supramolecular gelators. SOFT MATTER 2020; 16:7916-7926. [PMID: 32724982 DOI: 10.1039/d0sm01075h] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Glycosyl squaramides were synthesised and evaluated as low molecular weight gelators. Amphiphilic glycosyl squaramides 5 and 6, with a C-16 aliphatic chain, formed thermoreversible gels in polar organic solvents and 1 : 1 ethanol/water mixtures with high efficiency. Rheological analysis showed these gels achieve their structural stability 120 h after gelation and were robust, making them particularly suitable for biomedical applications. The interactions between solvent and gelator strongly influence SAFiN (Self-Assembled Fibrillar Network) formation, critical gelation concentration (CGC) and subsequent gel structure, as evidenced by SEM imaging of xerogels. Spectroscopic studies indicate that H-bonding is involved in the self-assembly of the glycosyl squaramides in organic solvents, while hydrophobic interactions are the major driving force for gel formation in the presence of water. The compounds described herein are the first reported examples of carbohydrate-squaramide conjugates capable of forming supramolecular gels.
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Affiliation(s)
- Jessica Ramos
- Department of Chemistry, Maynooth University, Maynooth, Co., Kildare, Ireland.
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80
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Martin H, Somers T, Dwyer M, Robson R, Pfeffer FM, Bjornsson R, Krämer T, Kavanagh K, Velasco-Torrijos T. Scaffold diversity for enhanced activity of glycosylated inhibitors of fungal adhesion. RSC Med Chem 2020; 11:1386-1401. [PMID: 34095846 DOI: 10.1039/d0md00224k] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2020] [Accepted: 08/11/2020] [Indexed: 12/20/2022] Open
Abstract
Candida albicans is one of the most prevalent fungal pathogens involved in hospital acquired infections. It binds to glycans at the surface of epithelial cells and initiates infection. This process can be blocked by synthetic carbohydrates that mimic the structure of cell surface glycans. Herein we report the evaluation of a series of divalent glycosides featuring aromatic (benzene, squaramide) and bicyclic aliphatic (norbornene) scaffolds, with the latter being the first examples of their kind as small molecule anti-adhesion glycoconjugates. Galactosides 1 and 6, built on an aromatic core, were most efficient inhibitors of adhesion of C. albicans to buccal epithelial cells, displacing up to 36% and 48%, respectively, of yeast already attached to epithelial cells at 138 μM. Remarkably, cis-endo-norbornene 21 performed comparably to benzene-core derivatives. Conformational analysis reveals a preference for compounds 1 and 21 to adopt folded conformations. These results highlight the potential of norbornenes as a new class of aliphatic scaffolds for the synthesis of anti-adhesion compounds.
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Affiliation(s)
- Harlei Martin
- Department of Chemistry, Maynooth University Maynooth Co. Kildare Ireland
| | - Tara Somers
- Department of Biology, Maynooth University Maynooth Co. Kildare Ireland
| | - Mathew Dwyer
- Department of Biology, Maynooth University Maynooth Co. Kildare Ireland
| | - Ryan Robson
- School of Life and Environmental Sciences, Deakin University Geelong Victoria 3217 Australia
| | - Frederick M Pfeffer
- School of Life and Environmental Sciences, Deakin University Geelong Victoria 3217 Australia
| | - Ragnar Bjornsson
- Department of Inorganic Spectroscopy, Max Planck Institute for Chemical Energy Conversion Stiftstrasse 34-36 45470 Mülheim an der Ruhr Germany
| | - Tobias Krämer
- Department of Chemistry, Maynooth University Maynooth Co. Kildare Ireland .,The Hamilton Institute, Maynooth University Maynooth Co. Kildare Ireland
| | - Kevin Kavanagh
- Department of Biology, Maynooth University Maynooth Co. Kildare Ireland.,The Kathleen Lonsdale Institute for Human Health Research, Maynooth University Maynooth Co. Kildare Ireland
| | - Trinidad Velasco-Torrijos
- Department of Chemistry, Maynooth University Maynooth Co. Kildare Ireland .,The Kathleen Lonsdale Institute for Human Health Research, Maynooth University Maynooth Co. Kildare Ireland
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81
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Davis JT, Gale PA, Quesada R. Advances in anion transport and supramolecular medicinal chemistry. Chem Soc Rev 2020; 49:6056-6086. [PMID: 32692794 DOI: 10.1039/c9cs00662a] [Citation(s) in RCA: 112] [Impact Index Per Article: 28.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Advances in anion transport by synthetic supramolecular systems are discussed in this article. Developments in the design of discrete molecular carriers for anions and supramolecular anion channels are reviewed followed by an overview of the use of these systems in biological systems as putative treatments for diseases such as cystic fibrosis and cancer.
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Affiliation(s)
- Jeffery T Davis
- Department of Chemistry and Biochemistry, University of Maryland, College Park, MD 20742, USA.
| | - Philip A Gale
- School of Chemistry (F11), The University of Sydney, NSW 2006, Australia.
| | - Roberto Quesada
- Departmento de Química, Universidad de Burgos, 09001 Burgos, Spain.
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82
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Dhanju S, Upadhyaya K, Rice CA, Pegan SD, Media J, Valeriote FA, Crich D. Synthesis, Cytotoxicity, and Genotoxicity of 10-Aza-9-oxakalkitoxin, an N,N,O-Trisubstituted Hydroxylamine Analog, or Hydroxalog, of a Marine Natural Product. J Am Chem Soc 2020; 142:9147-9151. [DOI: 10.1021/jacs.0c03763] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Sandeep Dhanju
- Department of Chemistry, Wayne State University, 5101 Cass Avenue, Detroit, Michigan 48202, United States
| | - Kapil Upadhyaya
- Department of Pharmaceutical and Biomedical Sciences, University of Georgia, 250 West Green Street, Athens, Georgia 30602, United States
| | - Christopher A. Rice
- Department of Pharmaceutical and Biomedical Sciences, University of Georgia, 250 West Green Street, Athens, Georgia 30602, United States
| | - Scott D. Pegan
- Department of Pharmaceutical and Biomedical Sciences, University of Georgia, 250 West Green Street, Athens, Georgia 30602, United States
| | - Joseph Media
- Department of Internal Medicine, Division of Hematology and Oncology, Henry Ford Cancer Institute, Detroit, Michigan 48202, United States
| | - Frederick A. Valeriote
- Department of Internal Medicine, Division of Hematology and Oncology, Henry Ford Cancer Institute, Detroit, Michigan 48202, United States
| | - David Crich
- Department of Chemistry, Wayne State University, 5101 Cass Avenue, Detroit, Michigan 48202, United States
- Department of Pharmaceutical and Biomedical Sciences, University of Georgia, 250 West Green Street, Athens, Georgia 30602, United States
- Department of Chemistry, University of Georgia, 140 Cedar Street, Athens, Georgia 30602, United States,
- Complex Carbohydrate Research Center, University of Georgia, 315 Riverbend Road, Athens, Georgia 30602, United States
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83
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Richardson MB, Gabriel KN, Garcia JA, Ashby SN, Dyer RP, Kim JK, Lau CJ, Hong J, Le Tourneau RJ, Sen S, Narel DL, Katz BB, Ziller JW, Majumdar S, Collins PG, Weiss GA. Pyrocinchonimides Conjugate to Amine Groups on Proteins via Imide Transfer. Bioconjug Chem 2020; 31:1449-1462. [PMID: 32302483 DOI: 10.1021/acs.bioconjchem.0c00143] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Advances in bioconjugation, the ability to link biomolecules to each other, small molecules, surfaces, and more, can spur the development of advanced materials and therapeutics. We have discovered that pyrocinchonimide, the dimethylated analogue of maleimide, undergoes a surprising transformation with biomolecules. The reaction targets amines and involves an imide transfer, which has not been previously reported for bioconjugation purposes. Despite their similarity to maleimides, pyrocinchonimides do not react with free thiols. Though both lysine residues and the N-termini of proteins can receive the transferred imide, the reaction also exhibits a marked preference for certain amines that cannot solely be ascribed to solvent accessibility. This property is peculiar among amine-targeting reactions and can reduce combinatorial diversity when many available reactive amines are available, such as in the formation of antibody-drug conjugates. Unlike amides, the modification undergoes very slow reversion under high pH conditions. The reaction offers a thermodynamically controlled route to single or multiple modifications of proteins for a wide range of applications.
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Affiliation(s)
- Mark B Richardson
- Department of Chemistry, University of California, Irvine, Irvine, California 92697, United States
| | - Kristin N Gabriel
- Department of Molecular Biology & Biochemistry, University of California, Irvine, Irvine, California 92697, United States
| | - Joseph A Garcia
- Department of Chemistry, University of California, Irvine, Irvine, California 92697, United States
| | - Shareen N Ashby
- Department of Chemistry, University of California, Irvine, Irvine, California 92697, United States
| | - Rebekah P Dyer
- Department of Molecular Biology & Biochemistry, University of California, Irvine, Irvine, California 92697, United States
| | - Joshua K Kim
- Department of Molecular Biology & Biochemistry, University of California, Irvine, Irvine, California 92697, United States
| | - Calvin J Lau
- Department of Physics & Astronomy, University of California, Irvine, Irvine, California 92697, United States
| | - John Hong
- School of Medicine, University of California, Irvine, Irvine, California 92697, United States
| | - Ryan J Le Tourneau
- Department of Chemistry, University of California, Irvine, Irvine, California 92697, United States
| | - Sanjana Sen
- Department of Molecular Biology & Biochemistry, University of California, Irvine, Irvine, California 92697, United States
| | - David L Narel
- Department of Molecular Biology & Biochemistry, University of California, Irvine, Irvine, California 92697, United States
| | - Benjamin B Katz
- Department of Chemistry, University of California, Irvine, Irvine, California 92697, United States
| | - Joseph W Ziller
- Department of Chemistry, University of California, Irvine, Irvine, California 92697, United States
| | - Sudipta Majumdar
- Department of Chemistry, University of California, Irvine, Irvine, California 92697, United States
| | - Philip G Collins
- Department of Physics & Astronomy, University of California, Irvine, Irvine, California 92697, United States
| | - Gregory A Weiss
- Department of Chemistry, University of California, Irvine, Irvine, California 92697, United States.,Department of Molecular Biology & Biochemistry, University of California, Irvine, Irvine, California 92697, United States
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84
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Saez Talens V, Arias-Alpizar G, Makurat DMM, Davis J, Bussmann J, Kros A, Kieltyka RE. Stab2-Mediated Clearance of Supramolecular Polymer Nanoparticles in Zebrafish Embryos. Biomacromolecules 2020; 21:1060-1068. [DOI: 10.1021/acs.biomac.9b01318] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- Victorio Saez Talens
- Supramolecular and Biomaterials Chemistry, Leiden Institute of Chemistry, Leiden University, PO Box 9502, 2300 RA Leiden, The Netherlands
| | - Gabriela Arias-Alpizar
- Supramolecular and Biomaterials Chemistry, Leiden Institute of Chemistry, Leiden University, PO Box 9502, 2300 RA Leiden, The Netherlands
| | - D. M. M. Makurat
- Supramolecular and Biomaterials Chemistry, Leiden Institute of Chemistry, Leiden University, PO Box 9502, 2300 RA Leiden, The Netherlands
| | - Joyal Davis
- Supramolecular and Biomaterials Chemistry, Leiden Institute of Chemistry, Leiden University, PO Box 9502, 2300 RA Leiden, The Netherlands
| | - Jeroen Bussmann
- Supramolecular and Biomaterials Chemistry, Leiden Institute of Chemistry, Leiden University, PO Box 9502, 2300 RA Leiden, The Netherlands
| | - Alexander Kros
- Supramolecular and Biomaterials Chemistry, Leiden Institute of Chemistry, Leiden University, PO Box 9502, 2300 RA Leiden, The Netherlands
| | - Roxanne E. Kieltyka
- Supramolecular and Biomaterials Chemistry, Leiden Institute of Chemistry, Leiden University, PO Box 9502, 2300 RA Leiden, The Netherlands
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85
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Picci G, Kubicki M, Garau A, Lippolis V, Mocci R, Porcheddu A, Quesada R, Ricci PC, Scorciapino MA, Caltagirone C. Simple squaramide receptors for highly efficient anion binding in aqueous media and transmembrane transport. Chem Commun (Camb) 2020; 56:11066-11069. [DOI: 10.1039/d0cc04090h] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A family of acyclic squaramide receptors (L1–L5) have been synthesised with the aim to evaluate how the presence of additional H-bond donor groups on the squaramide scaffold could affect their affinity towards anions and transport ability.
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Affiliation(s)
- Giacomo Picci
- Dipartimento di Scienze Chimiche e Geologiche
- Universita’degli Studi di Cagliari
- 09042 Monserrato
- Italy
| | - Maciej Kubicki
- Prof. dr hab. Maciej Kubicki
- Faculty of Chemistry
- Adam Mickiewicz University Umultowska 89b
- 61-614 Poznań
- Poland
| | - Alessandra Garau
- Dipartimento di Scienze Chimiche e Geologiche
- Universita’degli Studi di Cagliari
- 09042 Monserrato
- Italy
| | - Vito Lippolis
- Dipartimento di Scienze Chimiche e Geologiche
- Universita’degli Studi di Cagliari
- 09042 Monserrato
- Italy
| | - Rita Mocci
- Dipartimento di Scienze Chimiche e Geologiche
- Universita’degli Studi di Cagliari
- 09042 Monserrato
- Italy
| | - Andrea Porcheddu
- Dipartimento di Scienze Chimiche e Geologiche
- Universita’degli Studi di Cagliari
- 09042 Monserrato
- Italy
| | - Roberto Quesada
- Departamento de Quimica
- Facultad de Ciencias
- Universidad de Burgos
- 09001 Burgos
- Spain
| | - Pier Carlo Ricci
- Dipartimento di Fisica
- Universita’degli Studi di Cagliari
- 09042 Monserrato
- Italy
| | - M. Andrea Scorciapino
- Dipartimento di Scienze Chimiche e Geologiche
- Universita’degli Studi di Cagliari
- 09042 Monserrato
- Italy
| | - Claudia Caltagirone
- Dipartimento di Scienze Chimiche e Geologiche
- Universita’degli Studi di Cagliari
- 09042 Monserrato
- Italy
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86
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Bujosa S, Castellanos E, Frontera A, Rotger C, Costa A, Soberats B. Self-assembly of amphiphilic aryl-squaramides in water driven by dipolar π–π interactions. Org Biomol Chem 2020; 18:888-894. [DOI: 10.1039/c9ob02085c] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Amphiphilic aryl-squaramides self-assemble via unprecedented dipolar π–π interactions forming well-defined supramolecular aggregates and self-consistent hydrogels in water
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Affiliation(s)
- Sergi Bujosa
- Universitat de les Illes Balears
- 07122 Palma de Mallorca
- Spain
| | | | | | - Carmen Rotger
- Universitat de les Illes Balears
- 07122 Palma de Mallorca
- Spain
| | - Antonio Costa
- Universitat de les Illes Balears
- 07122 Palma de Mallorca
- Spain
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87
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Zaleskaya M, Jagleniec D, Karbarz M, Dobrzycki Ł, Romański J. Squaramide based ion pair receptors possessing ferrocene as a signaling unit. Inorg Chem Front 2020. [DOI: 10.1039/c9qi01452g] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Ferrocene offers a convenient reporter in squaramide based ion pair sensors able to recognize anions more strongly in the presence of cations.
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Affiliation(s)
- Marta Zaleskaya
- Faculty of Chemistry
- University of Warsaw
- PL 02-093 Warsaw
- Poland
| | | | - Marcin Karbarz
- Faculty of Chemistry
- University of Warsaw
- PL 02-093 Warsaw
- Poland
| | | | - Jan Romański
- Faculty of Chemistry
- University of Warsaw
- PL 02-093 Warsaw
- Poland
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88
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Castellanos E, Soberats B, Bujosa S, Rotger C, de la Rica R, Costa A. Development of Plasmonic Chitosan–Squarate Hydrogels via Bioinspired Nanoparticle Growth. Biomacromolecules 2019; 21:966-973. [DOI: 10.1021/acs.biomac.9b01635] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Eduardo Castellanos
- Universitat de les Illes Balears, Cra. Valldemossa Km 7.5, 07122 Palma de Mallorca, Spain
| | - Bartolome Soberats
- Universitat de les Illes Balears, Cra. Valldemossa Km 7.5, 07122 Palma de Mallorca, Spain
| | - Sergi Bujosa
- Universitat de les Illes Balears, Cra. Valldemossa Km 7.5, 07122 Palma de Mallorca, Spain
| | - Carmen Rotger
- Universitat de les Illes Balears, Cra. Valldemossa Km 7.5, 07122 Palma de Mallorca, Spain
| | - Roberto de la Rica
- Universitat de les Illes Balears, Cra. Valldemossa Km 7.5, 07122 Palma de Mallorca, Spain
- Multidisciplinary sepsis group, Balearic Islands Health Research Institute (IdISBa), Son Espases University Hospital, S Building, Carretera de Valldemossa 79, 07120 Palma de Mallorca, Spain
| | - Antonio Costa
- Universitat de les Illes Balears, Cra. Valldemossa Km 7.5, 07122 Palma de Mallorca, Spain
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89
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Chahal MK, Payne DT, Matsushita Y, Labuta J, Ariga K, Hill JP. Molecular Engineering of β‐Substituted Oxoporphyrinogens for Hydrogen‐Bond Donor Catalysis. European J Org Chem 2019. [DOI: 10.1002/ejoc.201901706] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Mandeep K. Chahal
- International Center for Materials Nanoarchitectonics (MANA) National Institute for Materials Science (NIMS) Namiki 1‐1, Tsukuba 305‐0044 Ibaraki Japan
| | - Daniel T. Payne
- International Center for Materials Nanoarchitectonics (MANA) National Institute for Materials Science (NIMS) Namiki 1‐1, Tsukuba 305‐0044 Ibaraki Japan
| | - Yoshitaka Matsushita
- Research Network and Facility Services Division National Institute for Materials Science (NIMS) 1‐2–1 Sengen, Tsukuba 305‐0047 Ibaraki Japan
| | - Jan Labuta
- International Center for Materials Nanoarchitectonics (MANA) National Institute for Materials Science (NIMS) Namiki 1‐1, Tsukuba 305‐0044 Ibaraki Japan
| | - Katsuhiko Ariga
- International Center for Materials Nanoarchitectonics (MANA) National Institute for Materials Science (NIMS) Namiki 1‐1, Tsukuba 305‐0044 Ibaraki Japan
- Department of Advanced Materials Science Graduate School of Frontier Sciences The University of Tokyo 5‐1–5 Kashiwanoha, Kashiwa 277‐8561 Chiba Japan
| | - Jonathan P. Hill
- International Center for Materials Nanoarchitectonics (MANA) National Institute for Materials Science (NIMS) Namiki 1‐1, Tsukuba 305‐0044 Ibaraki Japan
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90
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Gimeno MC, Herrera RP. Hydrogen Bonding and Internal or External Lewis or Brønsted Acid Assisted (Thio)urea Catalysts. European J Org Chem 2019. [DOI: 10.1002/ejoc.201901344] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- M. Concepción Gimeno
- Departamento de Química Inorgánica; Instituto de Síntesis Química y Catálisis Homogénea (ISQCH) CSIC-Universidad de Zaragoza; C/ Pedro Cerbuna 12 50009 Zaragoza Spain
| | - Raquel P. Herrera
- Departamento de Química Orgánica. Laboratorio de Organocatálisis Asimétrica; Instituto de Síntesis Química y Catálisis Homogénea (ISQCH) CSIC-Universidad de Zaragoza; C/ Pedro Cerbuna 12 50009 Zaragoza Spain
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91
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Ivancová I, Pohl R, Hubálek M, Hocek M. Squaramate-Modified Nucleotides and DNA for Specific Cross-Linking with Lysine-Containing Peptides and Proteins. Angew Chem Int Ed Engl 2019; 58:13345-13348. [PMID: 31328344 PMCID: PMC6771961 DOI: 10.1002/anie.201906737] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2019] [Revised: 07/12/2019] [Indexed: 01/31/2023]
Abstract
Squaramate-linked 2'-deoxycytidine 5'-O-triphosphate was synthesized and found to be good substrate for KOD XL DNA polymerase in primer extension or PCR synthesis of modified DNA. The resulting squaramate-linked DNA reacts with primary amines to form a stable diamide linkage. This reaction was used for bioconjugations of DNA with Cy5 and Lys-containing peptides. Squaramate-linked DNA formed covalent cross-links with histone proteins. This reactive nucleotide has potential for other bioconjugations of nucleic acids with amines, peptides or proteins without need of any external reagent.
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Affiliation(s)
- Ivana Ivancová
- Institute of Organic Chemistry and BiochemistryCzech Academy of SciencesFlemingovo nam. 216610Prague 6Czech Republic
- Department of Organic ChemistryFaculty of ScienceCharles University in PragueHlavova 8CZ-12843Prague 2Czech Republic
| | - Radek Pohl
- Institute of Organic Chemistry and BiochemistryCzech Academy of SciencesFlemingovo nam. 216610Prague 6Czech Republic
| | - Martin Hubálek
- Institute of Organic Chemistry and BiochemistryCzech Academy of SciencesFlemingovo nam. 216610Prague 6Czech Republic
| | - Michal Hocek
- Institute of Organic Chemistry and BiochemistryCzech Academy of SciencesFlemingovo nam. 216610Prague 6Czech Republic
- Department of Organic ChemistryFaculty of ScienceCharles University in PragueHlavova 8CZ-12843Prague 2Czech Republic
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92
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Ivancová I, Pohl R, Hubálek M, Hocek M. Squaramate‐Modified Nucleotides and DNA for Specific Cross‐Linking with Lysine‐Containing Peptides and Proteins. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201906737] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Ivana Ivancová
- Institute of Organic Chemistry and BiochemistryCzech Academy of Sciences Flemingovo nam. 2 16610 Prague 6 Czech Republic
- Department of Organic ChemistryFaculty of ScienceCharles University in Prague Hlavova 8 CZ-12843 Prague 2 Czech Republic
| | - Radek Pohl
- Institute of Organic Chemistry and BiochemistryCzech Academy of Sciences Flemingovo nam. 2 16610 Prague 6 Czech Republic
| | - Martin Hubálek
- Institute of Organic Chemistry and BiochemistryCzech Academy of Sciences Flemingovo nam. 2 16610 Prague 6 Czech Republic
| | - Michal Hocek
- Institute of Organic Chemistry and BiochemistryCzech Academy of Sciences Flemingovo nam. 2 16610 Prague 6 Czech Republic
- Department of Organic ChemistryFaculty of ScienceCharles University in Prague Hlavova 8 CZ-12843 Prague 2 Czech Republic
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