- Benzoic hydroxamate-based iron complexes as model compounds for humic substances: Synthesis, characterization and algal growth experiments
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A series of monomeric and dimeric FeIII complexes bearing benzoic hydroxamates as O,O-chelates has been prepared and characterized by elemental analysis, IR spectroscopy, UV-Vis spectroscopy, electrospray ionization mass spectrometry (ESI-MS), cyclic voltammetry, EPR spectroscopy and for some examples by X-ray diffraction analysis. The stability of the synthesized complexes in pure water and seawater was monitored over 24 h by means of UV-Vis spectrometry. The ability to release iron from the synthesized model complexes has been investigated with algae growth experiments.
- Orlowska, Ewelina,Roller, Alexander,Wiesinger, Hubert,Pignitter, Marc,Jirsa, Franz,Krachler, Regina,Kandioller, Wolfgang,Keppler, Bernhard K.
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p. 40238 - 40249
(2016/05/24)
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- HISTONE LYSINE DEMETHYLASE INHIBITORS
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The invention provides a compound which is an iV-oxalylglycine derivative of formula (I): a hydroxamic acid derivative of formula (II): or a heteroaryl derivative of fomula (III): wherein n; Z1; Z2; Y1; Y2; A; p; X1; X2; m; R4; B; R5; R6; R7; R8; R9; X3; R10; R11 and R12 are as defined herein, or a pharmaceutically acceptable salt thereof. These compounds are inhibitors of the human 2-oxoglutarate-dependant JMJD2 subfamily of histone demethylases, in particular JMJD2E. Such inhibitors are useful in changing the epigenetic state of cells resulting in the inhibition / activation of chromatin remodelling, multiple gene activation / deactivation, and in treating cancer and other conditions characterised by undesirable cellular proliferation, and psychiatric disorders including depression.
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Page/Page column 69; 76
(2010/04/30)
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- Inhibitor scaffolds for 2-oxoglutarate-dependent histone lysine demethylases
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The dynamic methylation of histone lysyl residues plays an important role in biology by regulating transcription, maintaining genomic integrity, and by contributing to epigenetic effects. Here we describe a variety of inhibitor scaffolds that inhibit the human 2-oxoglutarate-dependent JMJD2 subfamily of histone demethylases. Combined with structural data, these chemical starting points will be useful to generate small-molecule probes to analyze the physiological roles of these enzymes in epigenetic signaling.
- Rose, Nathan R.,Ng, Stanley S.,Mecinovi?, Jasmin,Liénard, Beno?t M. R.,Bello, Simon H.,Sun, Zhe,McDonough, Michael A.,Oppermann, Udo,Schofield, Christopher J.
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supporting information; experimental part
p. 7053 - 7056
(2009/11/30)
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- Inhibitors of the FEZ-1 metallo-β-lactamase
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Metallo-β-lactamases (MBLs) catalyze the hydrolysis of β-lactams including penicillins, cephalosporins and carbapenems. Starting from benzohydroxamic acid (1) structure-activity studies led to the identification of selective inhibitors of the FEZ-1 MBL, e.g., 2,5-substituted benzophenone hydroxamic acid 17 has a Ki of 6.1 ± 0.7 μM against the FEZ-1 MBL but does not significantly inhibit the IMP-1, BcII, CphA or L1 MBLs.
- Lienard, Benoit M.R.,Horsfall, Louise E.,Galleni, Moreno,Frere, Jean-Marie,Schofield, Christopher J.
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p. 964 - 968
(2008/12/23)
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- Synthesis of hydroxy- and amino-substituted benzohydroxamic acids: Inhibition of ribonucleotide reductase and antitumor activity
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Benzohydroxamic acids inhibit mammalian ribonucleotide reductase and exhibit antineoplastic activity in L1210 leukemic mice. Five new hydroxy- and amino-substituted benzohydroxamic acids (3,4- and 3,5-OH,3,4-NH2, 2,3,4-, and 3,4,5-OH) were prepared and tested along with 12 previously reported benzohydroxamic acids (BHA) for enzyme inhibition and antitumor activity. The most potent enzyme inhibitor in this series was 2,3,4-OH-BHA (ID50=3.5 μM), which is 140 times more potent than hydroxyurea, but its toxicity limited the antitumor activity to a 30% increase in life span of L1210 bearing mice at 125 (mg/kg) day ip for 8 days. The most effective antitumor agent in this series was 3,4-OH-BHA which prolonged the life span of L1210 bearing mice 103% at 600 (mg/kg)/day ip for 8 days.
- van't Riet,Wampler,Elford
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p. 589 - 592
(2007/10/05)
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