- Synthesis, antifungal activity, 3d-qsar, and molecular docking study of novel menthol-derived 1,2,4-triazole-thioether compounds
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A series of novel menthol derivatives containing 1,2,4-triazole-thioether moiety were designed, synthesized, characterized structurally, and evaluated biologically to explore more potent natural product-based antifungal agents. The bioassay results reveal
- Duan, Wen-Gui,Huang, Mei,Li, Bao-Yu,Lin, Gui-Shan
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- A High-Throughput Glycosyltransferase Inhibition Assay for Identifying Molecules Targeting Fucosylation in Cancer Cell-Surface Modification
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In cancers, increased fucosylation (attachment of fucose sugar residues) on cell-surface glycans, resulting from the abnormal upregulation of the expression of specific fucosyltransferase enzymes (FUTs), is one of the most important types of glycan modifications associated with malignancy. Fucosylated glycans on cell surfaces are involved in a multitude of cellular interactions and signal regulation in normal biological processes, as well as in disease. For example, sialyl LewisX is a fucosylated cell-surface glycan that is abnormally abundant in some cancers where it has been implicated in facilitating metastasis, allowing circulating tumor cells to bind to the epithelial tissue within blood vessels and invade into secondary sites by taking advantage of glycan-mediated interactions. To identify inhibitors of FUT enzymes as potential cancer therapeutics, we have developed a novel high-throughput assay that makes use of a fluorogenically labeled oligosaccharide as a probe of fucosylation. This probe, which consists of a 4-methylumbelliferyl glycoside, is recognized and hydrolyzed by specific glycoside hydrolase enzymes to release fluorescent 4-methylumbelliferone, yet when the probe is fucosylated prior to treatment with the glycoside hydrolases, hydrolysis does not occur and no fluorescent signal is produced. We have demonstrated that this assay can be used to measure the inhibition of FUT enzymes by small molecules, because blocking fucosylation will allow glycosidase-catalyzed hydrolysis of the labeled oligosaccharide to produce a fluorescent signal. Employing this assay, we have screened a focused library of small molecules for inhibitors of a human FUT enzyme involved in the synthesis of sialyl LewisX and demonstrated that our approach can be used to identify potent FUT inhibitors from compound libraries in microtiter plate format.
- Zhang, Xiaohua,Chen, Fei,Petrella, Alessandro,Chacón-Huete, Franklin,Covone, Jason,Tsai, Teng-Wei,Yu, Ching-Ching,Forgione, Pat,Kwan, David H.
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p. 715 - 724
(2019/03/26)
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- Design, synthesis and antibacterial evaluation of 1-[(1R,2S)-2-Fluorocyclopropyl] Ciprofloxacin-(4-Methyl-3-Aryl)-1,2,4-Triazole-5(4H)-Thione Hybrids
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Fourteen novel 1-[(1R,2S)-2-Fluorocyclopropyl]ciprofloxac in-(4-methyl-3-aryl)-1,2,4-triazole-5(4H)-thione hybrids 6a-n were designed, synthesized and assessed for their in vitro antibacterial activities against representative Gram-positive and Gram-negat
- Geng, Yun-He,Wei, Zeng-Quan,Xu, Zhi,Na, Lu-Xin,Zhang, Shu,Guo, Hui-Yuan,Liu, Ming-Liang,Feng, Lian-Shun,You, Xue-Fu
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p. 101 - 107
(2019/08/01)
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- A one-pot synthesis of 4,5-disubstituted-1,2,4-triazole-3-thiones on solid support under microwave irradiation
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4,5-Di-substituted-1,2,4-triazole-3-thiones (4a-f) have been prepared in one stage from the reaction of acid hydrazide 1 with alkyl or aryl isothiocyanate 2 in the presence of a KOH (10%) solution on the surface of silica gel as well as on the surface of montmorillonite K10 under microwave irradiation. These triazoles have also been prepared from the reaction of 4-substituted-1-aroyl thiosemicarbazides 3a-e, with a KOH (10%) solution on the surface of silica gel under microwave irradiation. Copyright Taylor & Francis Group, LLC.
- Rostamizadeh, Shahnaz,Mollahoseini, Kambiz,Moghadasi, Samar
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p. 1839 - 1845
(2007/10/03)
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- NEW COMPOUNDS
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The present invention relates to new compounds of formula I, (I) a process for their preparation and new intermediates prepared therein, pharmaceutical formulations containing said compounds and to the use of said compounds in therapy.
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- 5-Aryl-3-(alkylthio)-4H-1,2,4-triazoles as selective antagonists of strychnine-induced convulsions and potential antispastic agents
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Selected examples from three series of isomeric (alkylthio)-1,2,4- triazoles were prepared and examined for anticonvulsant activity versus strychnine-, maximal-electroshock-, pentylenetetrazole-, and 3- mercaptopropionic-acid-induced seizures in mice. A n
- Kane,Staeger,Dalton,Miller,Dudley,Ogden,Kehne,Ketteler,McCloskey,Senyah,Chmielewski,Miller
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p. 125 - 132
(2007/10/02)
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- 2,4-Dihydro-3H-1,2,4-triazole-3-thiones as Potential Antidepressant Agents
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A series of 5-aryl-2,4-dihydro-3H-1,2,4-triazole-3-thiones was prepared and evaluated for potential antidepressant activity.Members of this series were generally prepared by the alkaline ring closures of the corresponding 1-aroylthiosemicarbazides.Several
- Kane, John M.,Dudley, Mark W.,Sorensen, Stephen M.,Miller, Francis P.
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p. 1253 - 1258
(2007/10/02)
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