7-SUBSTITUTED INDIRUBIN-3'OXIMES AND THEIR APPLICATIONS
申请人:Meijer Laurent
公开号:US20100331327A1
公开(公告)日:2010-12-30
The invention relates to new 3′-, 7-substituted-indirubins of formula (I) wherein R represents N—OH, N—O-alkyl or N—O—CO-alkyl, NO—(R
a
)
n1
-Het, N—O—(Y)
n1
—NR
a
R
b
, N—O—CO—N(R
b
R
c
), radical with Het representing an aliphatic nitrogeneous heterocycle, Y being an optionally substituted —CH
2
— radical, n1 being 1 to 3, and X is an halogen atom selected in the group comprising F, Cl, Br, I, and Z is H or CH
3
and the salts thereof.
该发明涉及公式(I)中的新3'-,7-取代吲哚素,其中R代表N—OH,N—O-烷基或N—O—CO-烷基,NO—(R
a
)
n1
-Het,N—O—(Y)
n1
—NR
a
R
b
,N—O—CO—N(R
b
R
c
),基团Het代表脂肪族氮杂环,Y为可选择取代的—CH
2
—基团,n1为1至3,X为在F、Cl、Br、I组成的卤素原子中选择的一个,Z为H或CH
3
及其盐。
Novel Inverse Binding Mode of Indirubin Derivatives Yields Improved Selectivity for DYRK Kinases
Alzheimer's disease and Down syndrome. In this study, we present the design, synthesis, and biologicalevaluation of indirubins as DYRK inhibitors with enhanced selectivity. Modifications of the bis-indole included polar or acidic functionalities at positions 5' and 6' and a bromine or a trifluoromethyl group at position 7, affording analogues that possess high activity and pronounced specificity. Compound 6i
with antibacterialactivity serve as good candidates for developing novel antibacterial drugs which is very urgent and important. In this work, based on the unique scaffold of indirubin, an active ingredient of traditional Chinese medicine formulation Danggui Luhui Wan, we synthesized 29 indirubin-3′-monoximes and preliminarily evaluated their antibacterialactivities. The antibacterialactivity results
多重耐药微生物病原体是一个严重的全球健康问题。具有抗菌活性的新化合物是开发新型抗菌药物的良好候选者,这是非常紧迫和重要的。本工作基于中药当归鹿汇丸活性成分靛玉红独特的支架,合成了29个靛玉红-3'-单肟,并初步评价了其抗菌活性。抗菌活性结果表明,合成的靛玉红-3′-单肟5a-5z和5aa-5ad对金黄色葡萄球菌ATCC25923表现出良好的效力(MIC = 0.4-25.6 μg mL -1 )。其中,我们发现5-F、5-Cl和7-CF 3取代的靛玉红-3′-单肟5r 、 5s和5aa对金黄色葡萄球菌也表现出更好的抗菌效率(MIC高达0.4 μg mL -1 )比原型天然产物靛玉红(MIC = 32 μg mL -1 )。更重要的是,靛玉红-3'-单肟5aa与左氧氟沙星对临床多重耐药金黄色葡萄球菌具有一定的协同作用(分数抑菌浓度指数:0.375)。此外,还进行了电镜观察、PI染色、细胞外钾离子和核酸(260
6-Bromoindirubin-3′-oxime derivatives are highly active colistin adjuvants against <i>Klebsiella pneumoniae</i>
作者:Haoting Li、Anne E. Mattingly、Richard D. Smith、Roberta J. Melander、Robert K. Ernst、Christian Melander
DOI:10.1039/d2md00370h
日期:——
Multidrug resistant (MDR) bacterial infections have become increasingly common, leading clinicians to rely on last-resort antibiotics such as colistin.
多重耐药(MDR)细菌感染越来越普遍,导致临床医生不得不依赖最后的抗生素,如科利斯汀。
Indirubin Core Structure of Glycogen Synthase Kinase-3 Inhibitors as Novel Chemotype for Intervention with 5-Lipoxygenase
作者:Carlo Pergola、Nicolas Gaboriaud-Kolar、Nadine Jestädt、Stefanie König、Marina Kritsanida、Anja M. Schaible、Haokun Li、Ulrike Garscha、Christina Weinigel、Dagmar Barz、Kai F. Albring、Otmar Huber、Alexios L. Skaltsounis、Oliver Werz
DOI:10.1021/jm401740w
日期:2014.5.8
The enzymes 5-lipoxygenase (5-LO) and glycogen synthase kinase (GSK)-3 represent promising drug targets in inflammation. We made use of the bisindole core of indirubin, present in GSK-3 inhibitors, to innovatively target 5-LO at the ATP-binding site for the design of dual 5-LO/GSK-3 inhibitors. Evaluation of substituted indirubin derivatives led to the identification of (3Z)-6-bromo-3-[(3E)-3-hydroxyiminoindolin-2-ylidene]indolin-2-one (15) as a potent, direct, and reversible 5-LO inhibitor (IC50 = 1.5 mu M), with comparable cellular effectiveness on 5-LO and GSK-3. Together, we present indirubins as novel chemotypes for the development of 5-LO inhibitors, the interference with the ATP-binding site as a novel strategy for 5-LO targeting, and dual 5-LO/GSK-3 inhibition as an unconventional and promising concept for anti-inflammatory intervention.