通过基于结构的药物设计项目(SBDD),发现了有效的丙酮酸羧化酶小分子抑制剂(PC)。制备了一系列α-酮酸(7)和α-羟基肉桂酸(8),并在两种测定中评估了其对PC的抑制作用。两种最有效的抑制剂是3,3'-(1,4-亚苯基)双[2-羟基-2-丙酸](8u)和2-羟基-3-(喹啉-2-基)丙酸(8v))的IC 50值分别为3.0±1.0μM和4.3±1.5μM。化合物8v是相对于丙酮酸(K i = 0.74μM)和针对ATP的混合型抑制剂,表明它靶向PC的独特羧基转移酶(CT)域。此外,化合物8v不会显着抑制人碳酸酐酶II,基质金属蛋白酶-2,苹果酸脱氢酶或乳酸脱氢酶。
Synthesis of dispirooxindoles containing N-unsubstituted heterocyclic moieties and study of their anticancer activity
作者:A. A. Beloglazkina、N. A. Karpov、S. R. Mefedova、V. S. Polyakov、D. A. Skvortsov、M. A. Kalinina、V. A. Tafeenko、A. G. Majouga、N. V. Zyk、E. K. Beloglazkina
DOI:10.1007/s11172-019-2511-6
日期:2019.5
A convenient method is proposed for the synthesis of N-unsubstituted spiroxindoles with different heterocyclic moieties (2-thiohydantoin, hydantoin, and thiazolidine) by the regio-selective 1,3-dipolar cycloaddition of azomethine ylides, generated from isatins and sarcosine, to arylidene derivatives of corresponding heterocycles. The cytotoxicity of compounds was tested by the MTT method against MCF7
Design, synthesis, and biological evaluation of substrate-competitive inhibitors of C-terminal Binding Protein (CtBP)
作者:Sudha Korwar、Benjamin L. Morris、Hardik I. Parikh、Robert A. Coover、Tyler W. Doughty、Ian M. Love、Brendan J. Hilbert、William E. Royer、Glen E. Kellogg、Steven R. Grossman、Keith C. Ellis
DOI:10.1016/j.bmc.2016.04.037
日期:2016.6
C-terminal Binding Protein (CtBP) is a transcriptional co-regulator that downregulates the expression of many tumor-suppressor genes. Utilizing a crystal structure of CtBP with its substrate 4-methylthio-2-oxobutyric acid (MTOB) and NAD(+) as a guide, we have designed, synthesized, and tested a series of small molecule inhibitors of CtBP. From our first round of compounds, we identified 2-(hydroxyimino)-3-phenylpropanoic acid as a potent CtBP inhibitor (IC50 = 0.24 mu M). A structure-activity relationship study of this compound further identified the 4-chloro- (IC50 = 0.18 mu M) and 3-chloro- (IC50 = 0.17 mu M) analogues as additional potent CtBP inhibitors. Evaluation of the hydroxyimine analogues in a short-term cell growth/viability assay showed that the 4-chloro- and 3-chloro-analogues are 2-fold and 4-fold more potent, respectively, than the MTOB control. A functional cellular assay using a CtBP-specific transcriptional readout revealed that the 4-chloro- and 3-chloro-hydroxyimine analogues were able to block CtBP transcriptional repression activity. This data suggests that substrate-competitive inhibition of CtBP dehydrogenase activity is a potential mechanism to reactivate tumor-suppressor gene expression as a therapeutic strategy for cancer. (C) 2016 Elsevier Ltd. All rights reserved.
Synthesis and in vitro anticancer activity of 2,4-azolidinedione-acetic acids derivatives
作者:Danylo Kaminskyy、Borys Zimenkovsky、Roman Lesyk
DOI:10.1016/j.ejmech.2009.02.023
日期:2009.9
The synthesis and evaluation of anticancer activity of 2,4-thia(imida)zolidinedione-3- and 5-acetic acids amides were described. The structures of compounds were determined by IR, H-1 NMR, and MS analysis. In vitro anticancer activity of these compounds has been tested in National Cancer Institute (NCI) and the relationships between structure and anticancer activity are discussed. Among 2,4-azolidinedione-acetic acids derivatives 2-[5-(4-chlorobenzylidene)-2,4-dioxo-imidazolidin-3-yl]-N-(2-trifluoromethyl-phenyl)-acetamide (Ic) was superior to other related compounds in terms of high selectivity for the leukemia CCRF-CEM (log GI(50) = -6.06), HL-60(TB) (log GI(50) = -6.53), MOLT-4 (log GI(50) = -6.52) and SR (log GI(50) -6.51) cell lines. (C) 2009 Elsevier Masson SAS. All rights reserved.
SnCl<sub>2</sub>·2H<sub>2</sub>O: An Efficient Reagent for Selective and Direct Oxidative Desulfurization of Phenylmethylene-2-thiohydantoins to Corresponding Hydantoins
作者:Ravi Kumar、Shashi Pandey、Shahnawaz Khan、Prem M. S. Chauhan