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A novel chromone derivative with anti-inflammatory property via inhibition of ROS-dependent activation of TRAF6-ASK1-p38 pathway.

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The p38 MAPK signaling pathway plays a pivotal role in inflammation. Targeting p38 MAPK may be a potential strategy for the treatment of inflammatory diseases. In the present study, we show that a novel chromone derivative, DCO-6, significantly reduced lipopolysaccharide (LPS)-induced production of

Anti-inflammatory 5,6,7,8-tetrahydro-2-(2-phenylethyl)chromones from agarwood of Aquilaria sinensis.

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Four new 5,6,7,8-tetrahydro-2-(2-phenylethyl)chromones, aqulisinone A (1), (5S, 6R,7S,8S)-8-chloro-5,6,7-trihydroxy-2-[2-(4'-methoxyphenylethyl)]-5,6,7,8-tetrahydrochromone (2), (5S,6R,7S,8S)-8-chloro-5,6,7-trihydroxy-2-(2-phenylethyl)-5,6,7,8-tetrahydrochromone (3),

Bioactive chromone constituents from Vitex negundo alleviate pain and inflammation.

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UNASSIGNED Vitex negundo L. has been widely studied for its beneficial effect in inflammatory and pain conditions. The present study describes the isolation of two new bioactive chromone constituents from V. negundo and their in vivo evaluation for anti-inflammatory and antinociceptive

Chromones: A Promising Ring System for New Anti-inflammatory Drugs.

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The quest for safer anti-inflammatory drugs is still the focus of several medicinal chemistry programs. Chromones (4H-chromen-4-ones) are a group of naturally occurring compounds ubiquitous in plants, and the chromone core has proven to be a privileged scaffold in medicinal chemistry. Herein we

Rational design, synthesis and evaluation of chromone-indole and chromone-pyrazole based conjugates: identification of a lead for anti-inflammatory drug.

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Conjugates of chromone-indole and chromone-pyrazole were screened for cyclooxygenase-2 (COX-2), cyclooxygenase-1 (COX-1) and 5-lipoxygenase (5-LOX) inhibitory activities. Compounds 8 and 9 were identified as preferred inhibitors of COX-2 over the other two enzymes. Their IC50 for COX-2 was 29 nM and

Rearranged limonoids and chromones from Harrisonia perforata and their anti-inflammatory activity.

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Two new rearranged limonoids, harperforatin (1) and harperfolide (2), and a new chromone, harperamone (3), were isolated from fruits and roots of Harrisonia perforata, together with eight known compounds. Their structures were elucidated on the basis of spectroscopic data. Harperfolide (2) exhibited

Prenylated chromones and flavonoids from Artocarpus heterophyllus with their potential antiproliferative and anti-inflammatory activities

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Two new prenylated chromones, artoheterophines A (1) and B (2), five known prenylated chromones (3-7), as well as five known biogenetically related prenylated flavonoids (8-12) were isolated and characterized from the stems and leaves of A. heterophyllus. Their chemical structures were unambiguously

Repositioning Chromones for Early Anti-inflammatory Treatment of COVID-19

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The COVID-19 pandemic is posing an unprecedented sanitary threat. In the absence of specific vaccines and anti-SARS-CoV-2 drugs, medicines that may assist in tackling the emergency and limiting the high number of fatalities are urgently needed. The repositioning of available drugs to treat COVID-19

Natural chromones as potential anti-inflammatory agents: Pharmacological properties and related mechanisms.

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Chromones are a group of natural substances with a diversity of biological activities. Herein we assessed the pharmacological potential of three chromones (1, 2 and 3) isolated from Dictyoloma vandellianum as anti-inflammatory agents using in vitro and in vivo approaches. During in vitro screening,

GYF-17, a chloride substituted 2-(2-phenethyl)-chromone, suppresses LPS-induced inflammatory mediator production in RAW264.7 cells by inhibiting STAT1/3 and ERK1/2 signaling pathways.

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GYF-17, a 2-(2-phenethyl)-chromone derivative, was isolated from agarwood and showed superior activity of inhibiting NO production of RAW264.7 cells induced by LPS in our preliminary pharmacodynamic screening. In order to develop novel therapeutic drug for acute and chronic inflammatory disorders,

N,N-dialkylaminosubstituted chromones and isoxazoles as potential anti-inflammatory agents.

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The ability of some N,N-dialkylaminosubstituted chromones and isoxazoles to inhibit the protein kinase C (PKC) dependent signal transduction pathway was tested. As a cellular model, human neutrophils stimulated with either phorbol myristate acetate (PMA) or formylmethionine-leucine-phenylalanine

LC-MS-guided isolation of anti-inflammatory 2-(2-phenylethyl)chromone dimers from Chinese agarwood (Aquilaria sinensis).

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Fifteen previously undescribed 2-(2-phenylethyl)chromone dimers, along with two known analogues were isolated from Chinese agarwood (Aquilaria sinensis) by a LC-MS-guided fractionation procedure. Their structures were elucidated on the basis of spectroscopic and spectrometric data (1D and 2D NMR,

Anti-inflammatory Dimeric 2-(2-Phenylethyl)chromones from the Resinous Wood of Aquilaria sinensis.

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Sixteen new 2-(2-phenylethyl)chromone dimers, including four pairs of enantiomers (1a/1b, 3a/3b, 6a/6b, and 8a/8b), along with eight optically pure analogues (2, 4, 5, 7, and 9-12) were isolated from the resinous wood of Aquilaria sinensis. Their structures were determined by extensive spectroscopic

Anti-inflammatory 2-(2-phenylethyl)chromone derivatives from Chinese agarwood.

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Five new 2-(2-phenylethyl)chromone derivatives (1-5), along with eleven known compounds (6-16) were isolated from Chinese agarwood. Their structures were elucidated by spectroscopic data (NMR, UV, IR, and MS) analyses and comparison of their spectroscopic and physical data with the literature

6,8-Di-t-butyl-4-oxo-4H-1-benzopyran-2-carboxylic acid: a chromone derivative with anti-allergic, anti-inflammatory and uricosuric activity.

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