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Macroscopic Chiral Recognition by Calix[4]arene‐Based Host–Guest Interactions. Chemistry 2018; 24:15502-15506. [DOI: 10.1002/chem.201803564] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2018] [Revised: 07/30/2018] [Indexed: 01/12/2023]
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Maftei CV, Fodor E, Jones PG, Franz MH, Davidescu CM, Neda I. Asymmetric calixarene derivatives as potential hosts in chiral recognition processes. PURE APPL CHEM 2015. [DOI: 10.1515/pac-2014-1121] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
AbstractNew chiral derivatives of 15,35,55,75-tetra-tert-butyl-1,3,5,7(1,3)-tetrabenzenacyclooctaphane-12,32,52,72-tetraol [(1); tert-butyl-calix[4]-arene] were synthesized by coupling modified chiral quinuclidines derived from the natural-product-based alkaloids quincorine and quincoridine with the calix[4]arene 1 via either an ester bond or an amide bond. X-ray analyses of two products were performed. Applications of the products in asymmetric catalytic hydrogen transfer reactions are described. A protocol is presented to multi-substitute calix[4]arene at the methylene bridges, resulting in, e.g., 2,6-carboxyl-all-tert-butyl all-methoxy-calix[4]arene.
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Affiliation(s)
| | | | - Peter G. Jones
- 1Institut für Anorganische und Analytische Chemie, Technische Universität Carola Wilhelmina, Hagenring 30, D-38106 Braunschweig, Germany
| | | | - Corneliu M. Davidescu
- 4Faculty of Industrial Chemistry and Environmental Engineering, Politehnica University Timisoara, Victoriei Square 2, Ro-300006 Timisoara, Romania
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Cecioni S, Faure S, Darbost U, Bonnamour I, Parrot-Lopez H, Roy O, Taillefumier C, Wimmerová M, Praly JP, Imberty A, Vidal S. Selectivity among two lectins: probing the effect of topology, multivalency and flexibility of "clicked" multivalent glycoclusters. Chemistry 2011; 17:2146-59. [PMID: 21294181 DOI: 10.1002/chem.201002635] [Citation(s) in RCA: 101] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2010] [Indexed: 11/07/2022]
Abstract
The design of multivalent glycoconjugates has been developed over the past decades to obtain high-affinity ligands for lectin receptors. While multivalency frequently increases the affinity of a ligand for its lectin through the so-called "glycoside cluster effect", the binding profiles towards different lectins have been much less investigated. We have designed a series of multivalent galactosylated glycoconjugates and studied their binding properties towards two lectins, from plant and bacterial origins, to determine their potential selectivity. The synthesis was achieved through copper(I)-catalysed azide-alkyne cycloaddition (CuAAC) under microwave activation between propargylated multivalent scaffolds and an azido-functionalised carbohydrate derivative. The interactions of two galactose-binding lectins from Pseudomonas aeruginosa (PA-IL) and Erythrina cristagalli (ECA) with the synthesized glycoclusters were studied by hemagglutination inhibition assays (HIA), surface plasmon resonance (SPR) and isothermal titration microcalorimetry (ITC). The results obtained illustrate the influence of the scaffold's geometry on the affinity towards the lectin and also on the relative potency in comparison with a monovalent galactoside reference probe.
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Affiliation(s)
- Samy Cecioni
- Institut de Chimie et Biochimie Moléculaires et Supramoléculaires, Laboratoire de Chimie, Organique 2-Glycochimie, UMR5246, Université Claude Bernard Lyon 1 and CNRS, 43 Boulevard du 11 Novembre 1918, 69622 Villeurbanne, France
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Chien YY, Jan MD, Adak AK, Tzeng HC, Lin YP, Chen YJ, Wang KT, Chen CT, Chen CC, Lin CC. Globotriose-functionalized gold nanoparticles as multivalent probes for Shiga-like toxin. Chembiochem 2008; 9:1100-9. [PMID: 18398881 DOI: 10.1002/cbic.200700590] [Citation(s) in RCA: 91] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Compared to monovalent carbohydrates, multivalent carbohydrate ligands exhibit significantly enhanced binding affinities to their interacting proteins. Here, we report globotriose (P(k) ligand)-functionalized gold nanoparticle (AuNP) probes for the investigation of multivalent interactions with the B(5) subunit of Shiga-like toxin I (B-Slt). Six P(k)-ligand-encapsulated AuNPs (P(k)-AuNPs) of varying particle size and linker length were synthesized and evaluated for their potential as multivalent affinity probes by using a surface plasmon resonance competition assay. The affinity of these probes for the interacting proteins was greatly affected by nanoparticle size, linker length, and ligand density on nanoparticle surface. For example, the 20-nm 20-P(k)-l-AuNP, which had a relatively long linker showed a >10(8)-fold increase in affinity compared with the mono P(k) ligand. This intrinsic high-affinity AuNP probe specifically captured the recombinant B-Slt from Escherichia coli lysate, and the resulting purity of the B-Slt was >95 %. We also developed a robust P(k)-AuNP-based detection method for Slt-I by combining the technique with silver enhancement.
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Affiliation(s)
- Yuh-Yih Chien
- Institute of Chemistry, and Genomics Research Centre, Academia Sinica, 128 Taipei, Taiwan
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Kim J, Ahn Y, Park KM, Kim Y, Ko YH, Oh DH, Kim K. Carbohydrate wheels: cucurbituril-based carbohydrate clusters. Angew Chem Int Ed Engl 2007; 46:7393-5. [PMID: 17722124 DOI: 10.1002/anie.200702540] [Citation(s) in RCA: 49] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Jeeyeon Kim
- National Creative Research Initiative Center for Smart Supramolecules and Department of Chemistry, Pohang University of Science and Technology, San 31 Hyoja-dong, Pohang 790-784, Republic of Korea
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Kim J, Ahn Y, Park K, Kim Y, Ko Y, Oh D, Kim K. Carbohydrate Wheels: Cucurbituril-Based Carbohydrate Clusters. Angew Chem Int Ed Engl 2007. [DOI: 10.1002/ange.200702540] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Wiegand M, Lindhorst TK. Synthesis of Photoactive α-Mannosides and Mannosyl Peptides and Their Evaluation for Lectin Labeling. European J Org Chem 2006. [DOI: 10.1002/ejoc.200600449] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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Puchta R, Clark T, Bauer W. The formation of endo-complexes between calixarenes and amines—a reinvestigation. J Mol Model 2006; 12:739-47. [PMID: 16583198 DOI: 10.1007/s00894-005-0079-6] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2005] [Accepted: 11/21/2005] [Indexed: 10/24/2022]
Abstract
The formation of an endo-complex between p-allylcalix[4]arene and t-butylamine was described by Gutsche in 1985. However, for a comparable system, it has been shown using NOE methods that the amine does not reside inside the calix. Instead, an exo-calix complex is formed. A reevaluation suggests that the previous conclusion is an artifact due to improper NMR-data processing. DFT (RB3LYP/6-31G(d)) calculations confirm the higher stability of the exo-complex over its endo-counterpart.
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Affiliation(s)
- Ralph Puchta
- Computer-Chemie-Centrum, Friedrich-Alexander-Universität Erlangen-Nürnberg, Nägelsbachstrasse, 25, 91052, Erlangen, Germany
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Grüner B, Mikulášek L, Báča J, Císařová I, Böhmer V, Danila C, Reinoso-García MM, Verboom W, Reinhoudt DN, Casnati A, Ungaro R. Cobalt Bis(dicarbollides)(1-) Covalently Attached to the Calix[4]arene Platform: The First Combination of Organic Bowl-Shaped Matrices and Inorganic Metallaborane Cluster Anions. European J Org Chem 2005. [DOI: 10.1002/ejoc.200400811] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Yamada Y, Matsuura K, Kobayashi K. Cooperative lectin recognition of periodical glycoclusters along DNA duplexes: alternate hybridization and full hybridization. Bioorg Med Chem 2005; 13:1913-22. [PMID: 15727847 DOI: 10.1016/j.bmc.2005.01.021] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2004] [Revised: 01/14/2005] [Accepted: 01/14/2005] [Indexed: 11/23/2022]
Abstract
We describe herein the construction of periodically, spatially controlled glycoclusters along DNA duplexes and their cooperative lectin recognition. Site-specifically alpha-mannosylated oligodeoxynucleotide 20-mer (Man-ODN20) was synthesized via the phosphoramidite solid-phase synthesis. Alternate hybridization of the Man-ODN20 with the half-sliding complementary ODN 20-mer (hscODN20) gave an alternately prolonged Man-cluster Man-ODN20/hscODN20. The binding of the Man-cluster to FITC-labeled ConA lectin showed sigmoidal fluorescence dependency on the concentration of Man-ODN, indicating that some mannose residues along the repeating DNA duplex were cooperatively bound to ConA (apparent affinity constant: K(af)=2.4 x 10(4)M(-1) and Hill coefficient: n=3.5). The duplex of Man-ODN20 with full complementary ODN 20-mer (fcODN20) was little bound to ConA. The binding behavior of Man-ODN20/hscODN20 is compared with that of the alternately prolonged Gal-cluster Gal-ODN20/hscODN20 previously reported. Duplexes 20-mer, 40-mer, and 60-mer presenting one, two, and three periodic galactoses were also prepared by full hybridization of 20-mer beta-galactosylated oligodeoxynucleotide (Gal-ODN20) with the periodically repeating full complementary 20-mer, 40-mer, and 60-mer ODNs. RCA(120) lectin was found to little bind the 20-mer and 40-mer duplexes and to bind weakly and non-cooperatively the 60-mer duplex (K(af)=1.1 x 10(4)M(-1)). The cooperative lectin recognition of these glycoclusters in relation with the degree of association (DA) of ODN and the numbers of glycosides along the DNA duplex is discussed.
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Affiliation(s)
- Yoshinao Yamada
- Department of Molecular Design and Engineering, Graduate School of Engineering, Nagoya University, Nagoya 464-8603, Japan
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Wallner FK, Chen L, Moliner A, Jondal M, Elofsson M. Loading of the Antigen-Presenting Protein CD1d with Synthetic Glycolipids. Chembiochem 2004; 5:437-44. [PMID: 15185366 DOI: 10.1002/cbic.200300655] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
CD1 proteins present mammalian and microbial lipid and glycolipid antigens to different subsets of T cells. Few such antigens have been identified and the binding of these to CD1 molecules has mainly been studied by using responding T cells in cellular assays or recombinant solid-phase CD1 proteins. In the present study we use four different glycolipids, some of which contain tumor-associated carbohydrate antigens, to develop a procedure to easily detect binding of glycolipids to CD1 proteins on viable cells. Two of these glycolipids are novel glycoconjugates containing alpha-D-N-acetylgalactosamine (alpha-GalNAc) that were prepared by a combined solution and solid-phase approach. The key step, a Fischer glycosylation of 9-fluorenylmethoxycarbonylaminoethanol with GalNAc, furnished the alpha-glycoside 4 in 34% yield. Cells were incubated with glycolipids and stained with monoclonal antibodies specific for the carbohydrate part. The level of glycolipid bound to cells was then determined by flow cytometry with a secondary antibody labeled with fluorescein isothiocyanate. All four glycolipids were found to bind to CD1d but with different selectivity. The loading was dose dependent and could be inhibited by an established CD1d ligand, alpha-galactosylceramide. Through use of this procedure, glycolipids were selectively loaded onto CD1d expressed on professional antigen-presenting cells for future use as cellular vaccines. Moreover, the glycolipids described in this study represent novel CD1d-binding ligands that will be useful derivatives in the study of CD1d-dependent immune responses, for example, against tumors.
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Affiliation(s)
- Fredrik K Wallner
- Organic Chemistry, Department of Chemistry, Umeå University, 90187 Umeå, Sweden
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Recker J, Müller WM, Müller U, Kubota T, Okamoto Y, Nieger M, Vögtle F. Dendronized molecular knots: selective synthesis of various generations, enantiomer separation, circular dichroism. Chemistry 2002; 8:4434-42. [PMID: 12355531 DOI: 10.1002/1521-3765(20021004)8:19<4434::aid-chem4434>3.0.co;2-#] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
For the first time, knot molecules (of the amide type) are synthesized, which bear one to three dendritic units of various generations at their periphery. They were obtained through two different routes: i) attachment of dendritic wedges to new mono-, di- and trihydroxy functionalized dodecaamide knots that have been obtained by selective debenzylation of oligobenzyloxy substituted knots, or ii) cyclization of already dendron substituted pyridine-2,6-dicarbonyl dichlorides with an "extended diamine" to directly yield the "tri-dendroknots". The derivatization of knot molecules by functional substituents and even large dendritic units is an important advance in the synthesis and property variation of molecular knots. This holds true in particular for substitution of the pyridine units of the knots, whereas the isophthalic acid units seem not to tolerate larger substitutents, as reflected in lower knot yields. These syntheses also demonstrate knots to be accessible indirectly by substitution of the corresponding mono-, di- and tri-functionalized knot skeleton. An advantage of dendritic "decoration" is the control of solubility and chromatographic behaviour of the molecular knots (knotanes). Suggestions are made about the threading mechanism by supramolecular template effects leading to the formation of amide-based molecular knots. The topological chirality of the new "dendroknots" is shown by efficient enantioseparations (separation factor alpha between 1.22 and 1.48). For this purpose (commercially unavailable) chiral column material of the Chiralpak type was used, in which the chiral component is covalently bonded to the silica gel support. The racemate splittings provide additional evidence for the knotted structure, as all other conceivable isomers such as macromonocyclic or catenated dodecaamides would not be chiral. The pure enantiomers obtained exhibit pronounced Cotton effects in their circular dichroism spectra. By comparison with the unsubstituted knot, the absolute configuration (Lambda, Delta) of all new knots is derived.
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Affiliation(s)
- Janosch Recker
- Kekulé-Institut für Organische Chemie und Biochemie, Rheinische Friedrich-Wilhelms-Universität Bonn Gerhard-Domagk-Strasse 1, (Germany)
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Vargas-Berenguel A, Ortega-Caballero F, Santoyo-González F, García-López JJ, Giménez-Martínez JJ, García-Fuentes L, Ortiz-Salmerón E. Dendritic galactosides based on a beta-cyclodextrin core for the construction of site-specific molecular delivery systems: synthesis and molecular recognition studies. Chemistry 2002; 8:812-27. [PMID: 11857696 DOI: 10.1002/1521-3765(20020215)8:4<812::aid-chem812>3.0.co;2-p] [Citation(s) in RCA: 39] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
In order to evaluate the ability of multivalent glycosides based on a beta-cyclodextrin core as site-specific molecular carriers, a study on both the inclusion complexation behaviour and lectin binding affinity of branched and hyperbranched beta-cyclodextrins is presented. A series of cluster galactosides constructed on beta-cyclodextrin scaffolds containing seven 1-thio-beta-lactose or beta-lactosylamine bound to the macrocyclic core through different spacer arms were synthesised. In addition, the first synthesis of three first-order dendrimers based on a beta-cyclodextrin core containing fourteen 1-thio-beta-D-galactose, 1-thio-beta-lactose and 1-thio-beta-melibiose residues was performed. Calorimetric titrations performed at 25 degrees C in buffered aqueous solution (pH 7.4) gave the affinity constants and the thermodynamic parameters for the complex formation of these beta-cyclodextrin derivatives with guests sodium 8-anilino-1-naphthalenesulfonate (ANS) and 2-naphthalenesulfonate, and lectin from peanut (Arachis hypogaea) (PNA). The persubstitution of the primary face of the beta-cyclodextrin with saccharides led to a slight increase of the binding constant values for the inclusion complexation with ANS relative to the native beta-cyclodextrin. However, the increase of the steric congestion due to the presence of the saccharide residues on the narrow rim of the beta-cyclodextrin may cause a decrease of the binding ability as shown for sodium 2-naphthalenesulfonate. The spacer arms are not passive elements and influence the host binding ability according to their chemical nature. PNA forms soluble cross-linked complexes with cluster galactosides and lactosides scaffolded on beta-cyclodextrin but not with cluster galactopyranosylamines or melibiose. Both, perbranched and hyperbranched beta-cyclodextrins, form stronger complexes with PNA than the monomeric analogues. However, the use of hyperbranched CDs does not contribute to the improvement of the complex stability relative to heptakis-glycocyclodextrin derivatives. Finally, a titration experiment with PNA and a complex formed by a heptakis lactose beta-cyclodextrin derivative with sodium 2-naphthalenesulfonate showed the formation of a soluble cross-linked complex with stronger affinity constant and higher stoichiometry than those observed for the complex formation of PNA with the same heptakis-lactose beta-cyclodextrin derivative, suggesting the formation of a three component complex.
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Artificial Multivalent Sugar Ligands to Understand and Manipulate Carbohydrate-Protein Interactions. HOST-GUEST CHEMISTRY 2002. [DOI: 10.1007/3-540-45010-6_7] [Citation(s) in RCA: 151] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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Felder D, Gallani JL, Guillon D, Heinrich B, Nicoud JF, Nierengarten JF. Investigations of Thin Films with Amphiphilic Dendrimers Bearing Peripheral Fullerene Subunits. Angew Chem Int Ed Engl 2000. [DOI: 10.1002/(sici)1521-3757(20000103)112:1<207::aid-ange207>3.0.co;2-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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