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| 1 | Selenium containing macrocycles:transformation between Se-N/Se-S/Se-Se bonds显示文摘Macrocycles possess potential applications in supramolecular chemistry and biosystems.Thus development of new kinds of macrocycles is of significance.Herein,novel macrocycles containing Se-Se/Se-S bonds were synthesized via transformation between selenium related dynamic covalent bonds.A monomer containing two ebselen moieties was synthesized(M1).The Se-N bonds in M1 were reduced by dithiothreitol,forming Se-S linked dimer(D1).To realize the transformation from Se-S bonds to Se-Se bonds,guest molecules were added as template,triggering the formation of Se-Se linked dimer(D2).The formation of these two new kinds of macrocycles was determined by ~1H NMR and ^(77)Se NMR,and the necessity of guest molecules was also confirmed.The introduction of ebselen moieties and Se-S bonds or Se-Se bonds into macrocycles may endow it with new responsiveness and bioactivities,as well as new types of host-guest chemistry. | Shaobo Ji Hicham El Mard Mario Smet Wim Dehaen Huaping Xu | 2017 | Science China Chemistry2017，60，9： | 2 |
| 2 | Reduction versus rearrangement of 6,13-dihydro-6,13- diarylpentacene-6,13-diols affording 6, 13-and 13,13'-substituted pentacene derivatives显示文摘 | Vets Nathalie Smet Mario Dehaen Wire | 2005 | Synt Let2005，，2： | 1 |
| 3 | Dendritic tellurides acting as antioxidants显示文摘We have described the synthesis of a series of poly(aryl ether) dendrimers with telluride in the core and oligo(ethylene oxide) chains at the pe- riphery which act as glutathione peroxidase (GPx) mimics. These series of compounds were well characterized by H-NMR, 1 13C-NMR and ESI-MS. Using different ROOH (H2O2, cumene hydroperoxide) for testing the antioxidizing properties of these com- pounds, we have found that from generation 0 to 2, the activity of the dendritic GPx mimics first de- creased and then increased. This can be explained on the basis of a greater steric hindrance, going from generation 0 to 1, and stronger binding interactions going from generation 1 to 2. In other words, there exists a balance between binding interactions and steric hindrance that may optimize the GPx activity. | XU Huaping WANG Yapei WANG Zhiqiang LIU Junqiu Mario Smet Wim Dehaen | 2006 | Chinese Science Bulletin2006，51，19： | 1 |
| 4 | Aliphatic hyperbranched copolyesters by combination of ROP and AB2-polycondensation显示文摘 | Smet Mario Gottschalk Casten Skaria Sunny Frey Holger | 2005 | Macromolecular Chemistry and Physics2005，206，： | 1 |
| 5 | Mycotoxin binder improves growth rate in piglets associated with reduction of toll-like receptor-4 and increase of tight junction protein gene expression in gut mucosa显示文摘Background: Deoxynivalenol(DON) is a mycotoxin produced by Fusarium species in the field, commonly found in cereal grains, which negatively affects performances and health of animals. Mycotoxin binders are supposed to reduce the toxicity of mycotoxins.Method: The effect of a mycotoxin binder(containing acid-activated bentonite, clinoptilolite, yeast cell walls and organic acids) on growth performance and gut health was studied. Hundred and twenty weaning piglets were allocated to 4 treatments, with 5 pens of 6 piglets each, arranged in a 2 × 2 factorial design: control diet; control diet with 1 kg/t binder; control diet with DON; and control diet with DON and 1 kg/t binder. From d0–14,the diet of DON-challenged groups was artificially contaminated with a mixture of DON(2.6 mg/kg), 3-acetyldeoxynivalenol(0.1 mg/kg) and 15-acetyl-deoxynivalenol(0.3 mg/kg), after which the total contamination level was reduced to 1 mg/kg, until d37. On d14, one pig from each pen was euthanized and distal small intestinal mucosa samples were collected for the assessment of intestinal permeability, and gene expression of tight junction proteins, toll-like receptor 4, inflammatory cytokines and intestinal alkaline phosphatase.Results: After 37 d, there were no differences in growth performance between control and DON-challenged groups(P > 0.05). Nevertheless, groups that received diets with binder had a significantly higher average daily gain(ADG) and average daily feed intake(ADFI) for the first 14 d as well as for the whole period, compared to groups without binder(P ≤ 0.05). Groups with binder in the diet also exhibited lower expression of toll-like receptor 4 in distal small intestinal mucosa at d14, compared to groups without binder(P ≤ 0.05). Interestingly, comparing the two DON treatments, piglets fed DON and binder had significantly higher ADFI and ADG compared to those with only DON for the first 14-d(P ≤ 0.05). Addition of binder to DON contaminated diets, also down-regulated the gene expression of toll-like receptor 4(P ≤ 0.05) and increased m RNA level zona occludens 1(P ≤ 0.10) as compared to DON.Conclusions: The present data provide evidence that the binder improves growth rate in piglets associated with reduction of toll-like receptor-4 and increase of tight junction protein gene expression. However, the current study does not allow to assess whether the effects of the binder are mediated by alterations in the toxicokinetics of the mycotoxin. | Linghong Jin Wei Wang Jeroen Degroote Noémie Van Noten Honglin Yan Maryam Majdeddin Mario Van Poucke Luc Peelman Anne Goderis Kurt Van De Mierop Ronny Mombaerts Stefaan De Smet Joris Michiels | 2018 | Journal of Animal Science and Biotechnology2018，9，2： | 0 |
| 6 | N-heterocyclic Carbene Catalysed Polymerisation of 2,5-Diformylfuran显示文摘The biobased renewable monomer 2,5-diformylfuran is polymerised using various N-heterocyclic carbene(NHC)catalysts in dimethyl sulfoxide(DMSO)affording a low molar mass polymer.It is shown that catalyst structure as well as the temperature and time the polymerization is running have a noticeable effect on its molar mass.The obtained material is characterized by nuclear magnetic resonance(NMR),thermogravimetric analysis(TGA),differential scanning calorimetry(DSC)and X-ray diffraction(XRD).An attempt at chain extension with diamine leads to precipitation of the polymer.This new biobased polymer material might be useful as a sustainable resin. | Wouter Ruelens Fariba Mafakheri Viktor Van Lierde Mario Smet | 2022 | Organic Polymer Material Research2022，4，2： | 0 |
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