Efficient synthesis of new (R)-2-amino-1-butanol derived ureas, thioureas and acylthioureas and in vitro evaluation of their antimycobacterial activity
摘要:
The synthesis of 22 structurally diverse urea, thiourea and acylthiourea derivatives containing the (R)-2-amino-1-butanol motif has been performed. The evaluation of their in vitro activity against Mycobacterium tuberculosis (H(37)Rv and strain 43) showed promising results in the case of the acylthiourea derivatives (MIC range 0.36-7.46 mu M for H(37)Rv strain). (C) 2013 Elsevier Masson SAS. All rights reserved.
Intramolecular Hydrogen Bonding and Anion Binding of <i>N</i>-Benzamido-<i>N</i>‘-benzoylthioureas
作者:Wen-Xia Liu、Yun-Bao Jiang
DOI:10.1021/jo702159r
日期:2008.2.1
N-acylthiourea is known to be unable to bind anions due to a strong intramolecular hydrogenbond (IHB). We show here that by inserting an amido group in the N‘-phenyl side the newly designed N-benzamido-N‘-benzoylthioureas, despite this IHB too, bind strongly to anions with binding constants on the order of 106−107 mol-1 L. Results suggest that potential anion receptors or organocatalysts could be developed
exhibited satisfactory antiviral activity in a lethal influenzavirus mouse model. Moreover, mechanistic studies indicated that these acylthiourea derivatives inhibited influenzavirus proliferation by targeting influenzavirus RNA-dependent RNApolymerase. Thus, 10m is a potential lead compound for the further exploration of treatment options for influenza.
The biological screening of a collection of nature occurring diterpenoids against 11 beta-HSD1 resulted in the discovery of the lead compound 1b, which pointed to the therapeutic potential for type 2 diabetes. Subsequently, an optimization project was initiated. Starting from compound 1b and its counterpart 2, the hemi-synthesis was performed on kaurenic acid scaffolds yielding 36 derivatives. Further evaluations on both human and mouse 11 beta-HSD revealed that seven urea derivatives exhibited significant improved potency and selectivity. Especially, the urea 19a has an IC50 (human 11 beta-HSD1) = 9.4 nM and selectivity index (human 11 beta-HSD) > 10,649. The 2D and 3D binding models of the complex 19a/11 beta-HSD1 were generated using docking simulations. Based on the results, the structural activity relationships (SARs) of compounds 1b and 2 were also discussed. (C) 2013 Elsevier Masson SAS. All rights reserved.
Design and synthesis of indole, 2,3-dihydro-indole, and 3,4-dihydro-2H-quinoline-1-carbothioic acid amide derivatives as novel HCV inhibitors
An efficient synthetic methodology to provide indole, 2,3-dihydro-indole, and 3,4-dihydro-2H-quinoline-1-carbothioic acid amide derivatives is described. These conformationally restricted heterobicyclic scaffolds were evaluated as a novel class of HCV inhibitors. Introduction of an acyl group at the NH2 of the thiourea moiety has been found to enhance inhibitory activity. The chain length and the position of the alkyl group on the indoline aromatic ring markedly influenced anti-HCV activity. The indoline scaffold was more potent than the corresponding indole and tetrahydroquinoline scaffolds and analogue 31 displayed excellent activity (EC50 = 510 nM) against HCV without significant cytotoxicity (CC50 > 50 mu M). (C) 2009 Elsevier Ltd. All rights reserved.
Efficient synthesis of new (R)-2-amino-1-butanol derived ureas, thioureas and acylthioureas and in vitro evaluation of their antimycobacterial activity
作者:Georgi M. Dobrikov、Violeta Valcheva、Yana Nikolova、Iva Ugrinova、Evdokia Pasheva、Vladimir Dimitrov
DOI:10.1016/j.ejmech.2013.02.034
日期:2013.5
The synthesis of 22 structurally diverse urea, thiourea and acylthiourea derivatives containing the (R)-2-amino-1-butanol motif has been performed. The evaluation of their in vitro activity against Mycobacterium tuberculosis (H(37)Rv and strain 43) showed promising results in the case of the acylthiourea derivatives (MIC range 0.36-7.46 mu M for H(37)Rv strain). (C) 2013 Elsevier Masson SAS. All rights reserved.