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Vollett KDW, Cheng HLM. Efficient one-step amide formation using amino porphyrins. Org Biomol Chem 2024; 22:6308-6320. [PMID: 39037740 DOI: 10.1039/d4ob00704b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/23/2024]
Abstract
Amide bonds are one of the most prevalent phenomena in nature and are utilized frequently in drug and material design. However, forming amide bonds is not always efficient or high yielding, particularly when the amine used to conjugate to a carboxylic acid is a weak nucleophile. This limitation precludes many useful amino compounds from participating in conjugation reactions to form amides. A particularly valuable amino compound, which is also a very weak nucleophile, is the amino porphyrin, valued for its role as a photosensitizer, fluorescent agent, catalyst, or, upon metalation, even a very efficient contrast agent for magnetic resonance imaging (MRI). In this work, we propose fast and high-yield coupling of an unreactive amine - the amino porphyrin - to carboxylic acid via isothiocyanate conjugation. Reactions can be achieved in one step at room temperature in one hour, achieving quantitative conversion and near perfect selectivity. Both metalated and unmetalated porphyrin, as well as fluorescein isothiocyanate (FITC), demonstrated efficient conjugation. To illustrate the value of the proposed method, we created a new blood-pool MRI contrast agent that reversibly binds to serum albumin. This new blood-pool agent, known as MITC-Deox (MRI isothiocyanate that links with deoxycholic acid), substantially reduced T1 relaxation times in blood vessels in mice, remained stable for 1 hour, cleared from blood by 24 hours, and was eliminated from the body after 4 days. The proposed method for efficient amide formation is a superior alternative to existing coupling methods, opening a door to novel synthesis of MRI contrast agents and beyond.
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Affiliation(s)
- Kyle D W Vollett
- Institute of Biomedical Engineering, University of Toronto, Canada.
- Translational Biology & Engineering Program, Ted Rogers Centre for Heart Research, Toronto, Canada
| | - Hai-Ling Margaret Cheng
- Institute of Biomedical Engineering, University of Toronto, Canada.
- Translational Biology & Engineering Program, Ted Rogers Centre for Heart Research, Toronto, Canada
- The Edward S. Rogers Sr. Department of Electrical & Computer Engineering, University of Toronto, Canada
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Surface modification of fluorescent Tb 3+-doped layered double hydroxides with hyperbranched polymers through host-guest interaction. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2019; 104:109976. [PMID: 31499989 DOI: 10.1016/j.msec.2019.109976] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/20/2018] [Revised: 07/10/2019] [Accepted: 07/14/2019] [Indexed: 11/20/2022]
Abstract
The preparation of fluorescent inorganic-organic polymer composites for biomedical applications has become one of the most interest research focuses recently. In this work, we reported a novel method for the preparation of Tb3+-doped luminescent layered double hydroxides (LDHs) based composites by taken advantage of a one-pot supramolecular chemistry. The adamantane can be immobilized on the surface of Tb3+-doped LDHs to obtain LDH-Ad, which could be further utilized for modified by the β-cyclodextrin (β-CD) containing hyperbranched polyglycerols (β-CD-HPG) through the host-guest interaction. Based on the characterization results, we demonstrated that the hyperbranched polyglycerol could be facilely introduced on these fluorescent Tb3+-doped LDHs through the method described in this work. The obtained Tb3+-doped LDHs based polymer composites (LDHs-β-CD-HPG) display improved water dispersibility and still maintain their fluorescence. The results based on various biological assays suggest that LDHs-β-CD-HPG polymer composites are of low cytotoxicity and their cell uptake behavior can be effectively traced using confocal laser imaging. All of the above results demonstrated that the fluorescent Tb3+-doped LDHs based polymer composites could be effectively surface modified with hydrophilic hyperbranched polymers through a one-pot facile host-guest interaction and the resultant fluorescent composites are of excellent physicochemical properties and display great potential for biomedical applications. This novel surface modification method should also be important for fabrication of other multifunctional composites and therefore great advanced the development of biomedical applications of fluorescent LDHs based polymer composites and related materials.
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Baâzaoui M, Béjaoui I, Kalfat R, Amdouni N, Hbaieb S, Chevalier Y. Preparation and characterization of nanoparticles made from amphiphilic mono and per-aminoalkyl-β-cyclodextrins. Colloids Surf A Physicochem Eng Asp 2015. [DOI: 10.1016/j.colsurfa.2015.08.015] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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4
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Titov DV, Gening ML, Tsvetkov YE, Nifantiev NE. Conjugates of cyclooligosaccharide scaffolds and carbohydrate ligands: Methods for synthesis and the interaction with lectins. RUSSIAN JOURNAL OF BIOORGANIC CHEMISTRY 2013; 39:509-46. [DOI: 10.1134/s1068162013050142] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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5
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TSUTSUMI H, ETHO S, SHIMODA H, IKEDA H, ISHIZU T, NIIYA T. Drug Development for Eradication with InclusionComplex of Multifunctional-modifiedβCD. JOURNAL OF COMPUTER CHEMISTRY-JAPAN 2011. [DOI: 10.2477/jccj.h2303] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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6
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Fulton DA, Pease AR, Stoddart JF. Cyclodextrin-based carbohydrate clusters by amide bond formation. Isr J Chem 2010. [DOI: 10.1560/26tf-06hg-eqjj-w85j] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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7
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Synthesis, antifungal activities, and potential detoxification of N-(2,3,4,6-tetra-O-acetyl-β-d-glucopyranosyl)thiocarbamates. Carbohydr Res 2009; 344:1289-96. [DOI: 10.1016/j.carres.2009.05.008] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2009] [Revised: 04/28/2009] [Accepted: 05/06/2009] [Indexed: 11/22/2022]
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8
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Dupont N, Lazar AN, Perret F, Danylyuk O, Suwinska K, Navaza A, Coleman AW. Solid state structures of the complexes between the antiseptic chlorhexidine and three anionic derivatives of calix[4]arene. CrystEngComm 2008. [DOI: 10.1039/b805317k] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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9
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Villalonga R, Cao R, Fragoso A. Supramolecular Chemistry of Cyclodextrins in Enzyme Technology. Chem Rev 2007; 107:3088-116. [PMID: 17590054 DOI: 10.1021/cr050253g] [Citation(s) in RCA: 278] [Impact Index Per Article: 16.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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10
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Mangte DV, Deshmukh SP. Syntheses and antimicrobial activities of 4-aryl-5-phenylimino-3-S-(hepta-O-acetyl lactosyl)-1,2,4-thiadiazolines. HETEROATOM CHEMISTRY 2007. [DOI: 10.1002/hc.20310] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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11
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Tale PV, Deshmukh SP. Synthesis ofN-lactosylated thiourea and benzothiazolyl thiourea. HETEROATOM CHEMISTRY 2006. [DOI: 10.1002/hc.20207] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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12
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Ong TT, Tang W, Muderawan W, Ng SC, Chan HSO. Synthesis and application of single-isomer 6-mono(alkylimidazolium)-β-cyclodextrins as chiral selectors in chiral capillary electrophoresis. Electrophoresis 2005; 26:3839-48. [PMID: 16167309 DOI: 10.1002/elps.200500189] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Novel single isomers of positively charged beta-CDs were prepared via nucleophilic substitution of 6-monotosyl-beta-CD with alkylimidazoles to afford 6-mono(alkylimidazolium)-beta-CD tosylates and then 6-mono(alkylimidazolium)-beta-CD chlorides by anion exchange. The chiral resolution abilities of these cationic CDs were studied by CE using dansyl (Dns)-amino acids as model analytes. From the experimental results, it was found that both resolution and selectivity of these cationic CDs were dependent on the following parameters: concentration of chiral selectors, pH of the running buffer, counteranions of the CDs, side chain length of the n-alkyl-imidazolium cation, temperature of the capillary column, and organic modifier used. The concentration of chiral selectors required for enantioseparation varied from 3 to 30 mM. The BGE pH played an important role in the resolution of Dns-amino acids. For acidic BGEs, chiral resolution increased with pH (4.0-6.0) and reached a local maximum at pH 6.0. However, better resolutions were obtained with basic phosphate buffer at pH 9.6. Methanol was found to be an effective organic modifier for the resolution of Dns-amino acids by CE.
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Affiliation(s)
- Teng-Teng Ong
- Department of Chemistry, National University of Singapore, Singapore, Singapore
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Tang W, Muderawan IW, Ong TT, Ng SC. A family of single-isomer positively charged cyclodextrins as chiral selectors for capillary electrophoresis: Mono-6A-butylammonium-6A-deoxy-β-cyclodextrin tosylate. Electrophoresis 2005; 26:3125-33. [PMID: 16041704 DOI: 10.1002/elps.200500018] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
A novel single-isomer positively charged beta-cyclodextrin (beta-CD), mono-6(A)-butylammonium-6(A)-deoxy-beta-cyclodextrin tosylate (BuAM-beta-CD), has been synthesized, characterized, and used for the enantioseparations of alpha-hydroxy acids, carboxylic acids, and ampholytic analytes by capillary electrophoresis in acidic aqueous background electrolytes. The effective mobilities of all studied analytes decreased with increasing concentration of CD. Satisfactory resolutions were obtained for alpha-hydroxy acids over a wide range of chiral selector concentration. The optimum CD concentration was lower than 5 mM for the carboxylic acids, while higher than 20 mM for alpha-hydroxy acids. Inclusion complexation in combination with ion pair interaction seemed to account for the chiral discrimination process. The hydrogen bonding may provide secondary contribution for the chiral resolution of alpha-hydroxy acids. In addition, BuAM-beta-CD was further proved to be an effective chiral selector for anionic analytes by the baseline enantioseparation of a six-acid mixture within 20 min.
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Affiliation(s)
- Weihua Tang
- Department of Chemistry, National University of Singapore, Singapore
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Al-Masoudi NA, Al-Soud YA, Al-Masoudi WA. Thiosugar nucleosides. Synthesis and biological activity of 1,3,4-thiadiazole, thiazoline and thiourea derivatives of 5-thio-D-glucose. NUCLEOSIDES NUCLEOTIDES & NUCLEIC ACIDS 2005; 23:1739-49. [PMID: 15598075 DOI: 10.1081/ncn-200034040] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
New acylated 5-thio-beta-D-glucopyranosylimino-disusbstituted 1,3,4-thiadiazols 8, and 11 were prepared, via spontaneous rearrangements, by cycloaddition of the glycosyl isothiocyanate 2 with the reactive intermediates 1-aza-2-azoniaallene hexachloroantimonates 4 and 6, respectively. Reaction of 2 with aminoacetone or chloroethylamine afforded the acylated 5-thio-beta-D-glucopyranosyl-4-imidazoline-2-thione nucleoside 16 and glucopyranosylamino-2-thiazoline derivative 18, respectively. Deblocking of 8, 11, 17 and 19 furnished the free nucleoside analogues 9, 12, 18 and 20, respectively. Analogously, treatment of 2 with chloroethylamine in the 1:2 ratio afforded the thioureylendisaccharide 21. No in vitro antiviral activity against HIV-1, HIV-2, human cytomegallovirus (HMCV), has been found for the new synthesized compounds.
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15
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Lai XH, Ng SC. Convenient synthesis of mono(6A-N-allylamino-6A-deoxy)permethylated β-cyclodextrin: a promising chiral selector for an HPLC chiral stationary phase. Tetrahedron Lett 2004. [DOI: 10.1016/j.tetlet.2004.04.064] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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16
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Hayashida O, Hamachi I. Fluorophore Appended Saccharide Cyclophane: Self-Association, Fluorescent Properties, Heterodimers with Cyclodextrins, and Cross-Linking Behavior with Peanut Agglutinin of Dansyl-Modified Saccharide Cyclophane. J Org Chem 2004; 69:3509-16. [PMID: 15132563 DOI: 10.1021/jo0496852] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A saccharide cyclophane bearing an environment-sensitive fluorophore (1) was prepared by introducing not only three branches with a terminal galactose residue but also one with a dansyl moiety into a tetraaza[6.1.6.1]paracyclophane skeleton. Self-association behavior of the dansyl-appended saccharide cyclophane was characterized in aqueous media by fluorescence spectroscopy and dynamic light scattering measurements. At least in the concentrations below 1.0 x 10(-5) M, saccharide cyclophane 1 existed in a monomeric state, whereas it tended to form self-aggregated complexes in the higher concentration. Solvent polarity dependency on the emission spectra of 1 was examined by fluorescence spectroscopy. With increasing dioxane contents in dioxane/water solvents, the fluorescence intensity originating from the dansyl moiety of 1 increased along with a concomitant blue shift of the fluorescence maximum (lambda(em)). In the monomeric state of 1 in water, the dansyl moiety of 1 was not fully included into its cyclophane cavity but partially exposed to the bulk aqueous phase. In the higher concentration ranges in an aggregate state, however, the dansyl group of 1 was located in the apolar cyclophane cavity whose microenvironment was equivalent to the polarity of 1-butanol evaluated on the basis of a correlation between lambda(em) and solvent polarity. This indicates an intermolecular inclusion of the dansyl moiety within the cyclophane. When cyclodextrin (CD) was mixed with 1, the dansyl group of 1 was bound to an internal cavity of CD such as gamma-CD, beta-CD, 6-O-alpha-glucosyl-beta-CD, and 6-O-alpha-maltosyl-beta-CD with binding constants of 7.5 x 10(2), 7.8 x 10(2), 7.7 x 10(2), and 6.0 x 10(2) M(-1), respectively. Such a supramolecular assembling of dansyl-modified cyclophane 1 and CDs caused changes of the fluorescence spectra as well as appearance of induced CD bands in aqueous media. Furthermore, saccharide cyclophane 1 was selectively bound to peanut agglutinin (PNA), galactoside-binding lectin, which was readily monitored by a visible turbidity of the solution due to a cross-linking agglutination of these components, as well as by fluorescence spectroscopy.
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Affiliation(s)
- Osamu Hayashida
- Institute for Materials Chemistry and Engineering, Kyushu University, Hakozaki, Higashi-ku, Fukuoka 812-8581, Japan.
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Lai XH, Ng SC. Preparation and chiral recognition of a novel chiral stationary phase for high-performance liquid chromatography, based on mono(6A-N-allylamino-6A-deoxy)-perfunctionalized β-cyclodextrin and covalently bonded silica gel. J Chromatogr A 2004; 1031:135-42. [PMID: 15058577 DOI: 10.1016/j.chroma.2003.11.018] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A novel chiral stationary phase (CSP) was prepared by immobilizing mono(6A-N-allylamino-6A-deoxy)-perphenylcarbamoylated beta-cyclodextrin onto the surface of silica gel via hydrosilylation. The chromatographic properties of this column were tested with a wide range of structurally diverse racemic compounds and drugs under reverse phases. Separation mechanisms involved are also discussed.
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Affiliation(s)
- Xiang-Hua Lai
- Department of Chemistry, National University of Singapore, Singapore 119260, Singapore
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Abstract
One of the key areas of importance in biotechnology and bioengineering is molecular complexation (MC). MC is useful in selectivity, separation, and solubilization of biomolecules. While many complex, natural MC agents exist, such as proteins and antibodies, relatively few engineered MC materials are available. Inorganic, insoluble MC agents, such as zeolites, are widely used in petroleum catalysis. Carbon Buckminster fullerenes ("bucky balls") can complex small neutral molecules, but are relatively insoluble and difficult to manufacture. Crown ethers have been used for molecular complexation, but are costly to synthesize and have limited capacities. One class of highly useful MC agents are cyclodextrins (CDs). These naturally-occurring, water-soluble cyclic glucans are used in a variety of food, pharmaceutical, and analytical applications. Due to the availability of multiple reactive hydroxyl groups, the functionality of CDs can be greatly increased through chemical modification. A host of new applications are being explored, including enzyme mimicry, molecular recognition, chromatographic separation, and solubilization. This review describes recent applications of modified cyclodextrins in bioprocessing and medicine.
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Affiliation(s)
- S D Eastburn
- Biochemical and Food Process Engineering, Department of Agricultural Engineering, Purdue University, West Lafayette, IN 47907, USA
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Lai X, Ng SC. Mono(6A-N-allylamino-6A-deoxy)perphenylcarbamoylated β-cyclodextrin: synthesis and application as a chiral stationary phase for HPLC. Tetrahedron Lett 2003. [DOI: 10.1016/s0040-4039(03)00347-2] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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21
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Saleh MA. Reaction of glycosyl isothiocynates with 3-indolylaminomethyl-ketone hydrochloride. NUCLEOSIDES, NUCLEOTIDES & NUCLEIC ACIDS 2002; 21:401-9. [PMID: 12182352 DOI: 10.1081/ncn-120006834] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Reaction of glycosyl isothiocyanate la-c with 3-indolylaminomethylketone hydrochloride(2) yielded glycosylthiourea derivatives 3a-c. Cyclodehydration of 3a-c with acetic anhydride afforded 5-(indol-3-yl)-2-[N-per-O-acetyl-D-glycopyranosyl)amino]thiazoles 4a-c. Deacetylation of 4a-c gave 5-(indol-3-yl)-2-[N-(D-glycopyranosyl) amino] thiazoles 5a-c.
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Affiliation(s)
- Mohamed A Saleh
- Chemistry Department, Faculty of Science, Tanta University, Egypt.
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Fulton DA, Stoddart JF. Synthesis of cyclodextrin-based carbohydrate clusters by photoaddition reactions. J Org Chem 2001; 66:8309-19. [PMID: 11735508 DOI: 10.1021/jo010705z] [Citation(s) in RCA: 74] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The syntheses of homogeneous cyclodextrin-based carbohydrate clusters, persubstituted with beta-D-thioglucosyl or D-thiolactosyl residues on either (a) the primary face, (b) the secondary face, or (c) both the primary and the secondary faces of their cyclodextrin tori, are described. The key step in the synthetic methodology, namely the attachment of the carbohydrate residues to the cyclodextrin torus, proceeds in moderate-good yields (42-70%) by the photoaddition of thiol groups, positioned at the anomeric centers of the carbohydrate residues, to allyl ether functions on the cyclodextrins. Facile removal of protecting groups then affords the free cluster compounds. Extensive 1-D and 2-D NMR spectroscopic investigations were performed on these compounds to determine their structures and establish their homogeneities, and a brief computer molecular modeling study allowed estimates of the dimensions of the clusters to be determined.
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Affiliation(s)
- D A Fulton
- Department of Chemistry and Biochemistry, University of California, Los Angeles 90095-1569, USA
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Affiliation(s)
- D A Fulton
- Department of Chemistry and Biochemistry, University of California, Los Angeles, 405 Hilgard Avenue, Los Angeles, California 90095, USA
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Fulton DA, Stoddart JF. An efficient synthesis of cyclodextrin-based carbohydrate cluster compounds. Org Lett 2000; 2:1113-6. [PMID: 10804567 DOI: 10.1021/ol005668x] [Citation(s) in RCA: 69] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
[formula: see text] The photoaddition of the thiol 2,3,4,6-tetra-O-acetyl-beta-D-1-thioglucopyranose to the allyl ether functions of per-2-allyl-, per-6-allyl-, and per-2,6-diallyl-beta-cyclodextrin derivatives provides a remarkably simple and efficient way for attaching glucopyranose units onto (1) the secondary face, as well as (2) the primary face, of beta-cyclodextrin--not to mention (3) both the primary and secondary faces, simultaneously--in yields of up to 70%.
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Affiliation(s)
- D A Fulton
- Department of Chemistry and Biochemistry, University of California, Los Angeles 90095-1569, USA
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García Fernández J, Mellet CO. Chemistry and developments of N-thiocarbonyl carbohydrate derivatives: Sugar isothiocyanates, thioamides, thioureas, thiocarbamates, and their conjugates. Adv Carbohydr Chem Biochem 2000. [DOI: 10.1016/s0065-2318(00)55004-5] [Citation(s) in RCA: 64] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Zhang LF, Chen L, Lee TC, Ng SC. A facile route into 6A-mono-ω-alkenylcarbamido-6A-deoxy-perfunctionalised cyclodextrin: key intermediate for further reactive functionalisations. ACTA ACUST UNITED AC 1999. [DOI: 10.1016/s0957-4166(99)00435-8] [Citation(s) in RCA: 23] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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27
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Zhang LF, Wong YC, Chen L, Ching CB, Ng SC. A facile immobilization approach for perfunctionalised cyclodextrin onto silica via the Staudinger reaction. Tetrahedron Lett 1999. [DOI: 10.1016/s0040-4039(99)00017-9] [Citation(s) in RCA: 60] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Impellizzeri G, Pappalardo G, Rizzarelli E, Tringali C. Synthesis and high field NMR study of a new cyclodipeptide–β-cyclodextrin derivative. ACTA ACUST UNITED AC 1996. [DOI: 10.1039/p29960001435] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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30
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Fernández JMG, Mellet CO, Maciejewski S, Defaye J. Thioureido-β-cyclodextrins as molecular carriers. Chem Commun (Camb) 1996. [DOI: 10.1039/cc9960002741] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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31
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de Robertis L, Lancelon-Pin C, Driguez H, Attioui F, Bonaly R, Alain M. Synthesis of new oligosaccharidyl-thio-β-cyclodextrins (CDS): a novel family of potent drug-targetting vectors. Bioorg Med Chem Lett 1994. [DOI: 10.1016/s0960-894x(01)80241-9] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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32
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Parrot-Lopez H, Leray E, Coleman AW. New β-cyclodextrin derivatives possessing biologically active saccharide antennae. Supramol Chem 1993. [DOI: 10.1080/10610279308029836] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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33
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Mellet CO, Blanco JLJ, Fernández JMG, Fuentes J. Building Blocks for Glycopeptide Synthesis. Disaccharide Glycosyl Isothiocyanates. J Carbohydr Chem 1993. [DOI: 10.1080/07328309308019403] [Citation(s) in RCA: 25] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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35
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36
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37
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Fuentes J, Moreda W, Ortiz C, Robina I, Welsh C. Partially protected D-glucopyranosyl isothiocyanates. Synthesis and transformations into thiourea and heterocyclic derivatives. Tetrahedron 1992. [DOI: 10.1016/s0040-4020(01)88231-4] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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