1486-48-2Relevant articles and documents
Mimic catechins to develop selective MMP-2 inhibitors
Di Pizio, Antonella,Agamennone, Mariangela,Laghezza, Antonio,Loiodice, Fulvio,Tortorella, Paolo
, p. 1293 - 1300 (2018)
Abstract: Matrix metalloproteinase 2 (MMP-2) is a well-known anticancer target belonging to the MMP family. Because of the bilateral role of MMPs in cancer, developing highly selective MMP-2 inhibitors is a current challenge. In this paper, we investigated the binding modes of green tea polyphenols epigallocatechin gallate and epicatechin into the active site of the MMP-2 enzyme. The structure-based analysis allowed the optimization of these hits and hence led to a better lead candidate. Moreover, using a pharmacophore model, we screened FooDB compounds and selected food components as potential MMP-2 inhibitors. The search for food-derived compounds that target this enzyme may represent a strategy to identify new lead molecules with improved safety profiles and provide indications about possible functional foods. Graphical abstract: [Figure not available: see fulltext.].
The Synthesized Plant Metabolite 3,4,5-Tri-O-Galloylquinic Acid Methyl Ester Inhibits Calcium Oxalate Crystal Growth in a Drosophila Model, Downregulates Renal Cell Surface Annexin A1 Expression, and Decreases Crystal Adhesion to Cells
Abd El-Salam, Mohamed,Bastos, Jairo Kenupp,Han, Jing Jing,Previdi, Daniel,Coelho, Eduardo B.,Donate, Paulo M.,Romero, Michael F.,Lieske, John
, p. 1609 - 1621 (2018)
The plant metabolite 3,4,5-tri-O-galloylquinic acid methyl ester (TGAME, compound 6) was synthesized, and its potential effect on calcium oxalate monohydrate (COM) crystal binding to the surface of Madin-Darby canine kidney cells type I (MDCKI) and crystal growth in a Drosophila melanogaster Malpighian tubule (MT) model were investigated. Membrane, cytosolic, and total annexin A1 (AxA1), α-enolase, and heat shock protein 90 (HSP90) amounts were examined by Western blot analysis after subcellular fractionation, then confirmed by immunofluorescence staining of cultured cells. Pretreatment of MDCKI cells with TGAME for up to 6 h significantly diminished COM crystal binding in a concentration-dependent manner. TGAME significantly inhibited AxA1 surface expression by immunofluorescence microscopy, whereas intracellular AxA1 increased. Western blot analysis confirmed AxA1 expression changes in the membrane and cytosolic fractions of compound-treated cells, whereas whole cell AxA1 remained unchanged. TGAME also significantly decreased the size, number, and growth of calcium oxalate (CaOx) crystals induced in a Drosophila melanogaster MT model and possessed a potent antioxidant activity in a DPPH assay.
Promotion of mitochondrial biogenesis by synthetic 1,2- or 1,3-digallates through activation of an energy sensing network
Chong, Youhoon,Kim, Mi Kyoung,Lee, Taegum
, (2022/01/08)
Based on the observations suggesting that a digallate functionality might serve as a novel scaffold for inducers of mitochondrial biogenesis, we prepared a series of digallates and evaluated their activity in an in vitro model widely used in PD research (
Synthesis and evaluation of new sesamol-based phenolic acid derivatives with hypolipidemic, antioxidant, and hepatoprotective effects
Xie, Yundong,Liu, Jiping,Shi, Yongheng,Bin Wang,Wang, Xiaoping,Wang, Wei,Sun, Meng,Xu, Xinya,He, Shipeng
, p. 1688 - 1702 (2021/07/26)
The objective of this study is to synthesize a series of sesamol-based phenolic acid derivatives, which were designed by combination principle. The hypolipidemic activity of all these compounds was preliminarily screened by acute hyperlipidemic mice model induced by Triton WR 1339, in which compound T6 exhibited more significant reducing plasma TG and TC than fenofibrate. Compound T6 was also found to obviously decrease TG and TC both in the plasma and hepatic tissue of high-fat-diet-induced hyperlipidemic mice. Moreover, T6 showed hepatoprotective effects, which remarkable amelioration in characteristic liver enzymes was examined and the histopathological observation displayed that compound T6 inhibited lipids accumulation in the hepatic. The levels of PPAR-α receptor related to lipids metabolism in hepatic tissue were upregulated after T6 treatment. Other potent effects of T6 such as antioxidant and anti-inflammatory activity were also observed. On the bases of these findings, compound T6 may serve as an effective hypolipidemic and hepatoprotective agent. [Figure not available: see fulltext.]
Cannabidiol derivative, preparation method and application thereof
-
, (2021/07/28)
The invention discloses a cannabidiol derivative, a preparation method and application thereof, and belongs to the technical field of medicinal chemistry, wherein the cannabidiol derivative is obtained by taking cannabidiol as a main body through a synthesis means, and an anti-tumor activity determination result shows that the cannabidiol derivative prepared by the invention has an inhibition effect on lung cancer cell strains, human breast cancer cell strains, nasopharynx cancer and drug-resistant strains thereof.
Biological Characterization, Mechanistic Investigation and Structure-Activity Relationships of Chemically Stable TLR2 Antagonists
Bermudez, Marcel,Grabowski, Maria,Murgueitio, Manuela S.,Rademann, J?rg,Rudolf, Thomas,Tiemann, Markus,Varga, Péter,Weindl, Günther,Wolber, Gerhard
, (2020/06/08)
Toll-like receptors (TLRs) build the first barrier in the innate immune response and therefore represent promising targets for the modulation of inflammatory processes. Recently, the pyrogallol-containing TLR2 antagonists CU-CPT22 and MMG-11 were reported; however, their 1,2,3-triphenol motif renders them highly susceptible to oxidation and excludes them from use in extended experiments under aerobic conditions. Therefore, we have developed a set of novel TLR2 antagonists (1–9) based on the systematic variation of substructures, linker elements, and the hydrogen-bonding pattern of the pyrogallol precursors by using chemically robust building blocks. The novel series of chemically stable and synthetically accessible TLR2 antagonists (1–9) was pharmacologically characterized, and the potential binding modes of the active compounds were evaluated structurally. Our results provide new insights into structure-activity relationships and allow rationalization of structural binding characteristics. Moreover, they support the hypothesis that this class of TLR ligands bind solely to TLR2 and do not directly interact with TLR1 or TLR6 of the functional heterodimer. The most active compound from this series (6), is chemically stable, nontoxic, TLR2-selective, and shows a similar activity with regard to the pyrogallol starting points, thus indicating the variability of the hydrogen bonding pattern.
Synthesis of B-ring-fluorinated (?)-epicatechin gallate derivatives
Baumgarten, Kai D.,Czekelius, Constantin,Michaelis, Carina S.,Thieltges, David D. S.
, p. 4024 - 4028 (2020/06/09)
The synthesis of enantiomerically pure B-ring fluorinated catechin derivatives is presented. In a convergent approach the chromane was obtained by reaction of a lithiated fluoro-resorcine with an optically active epoxide. The latter was prepared from 3,4-
Switchable Full-Color Reflective Photonic Ellipsoidal Particles
He, Qilin,Ku, Kang Hee,Vijayamohanan, Harikrishnan,Kim, Bumjoon J.,Swager, Timothy M.
, p. 10424 - 10430 (2020/06/08)
Full-color reflective photonic ellipsoidal polymer particles, capable of a dynamic color change, are created from dendronized brush block copolymers (den-BBCPs) self-assembled by solvent-evaporation from an emulsion. Surfactants composed of dendritic mono
1,3-benzodioxole natural salvianolic acid ester compound and blood fat reduction application thereof
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, (2019/10/17)
The invention discloses a 1,3-benzodioxole natural salvianolic acid ester compound and blood fat reduction application thereof. A sesamol structure is adopted as a functional fragment, a natural salvianolic acid type structure is introduced into the sesam
Synthesis, structure activity relationship and in vitro anti-influenza virus activity of novel polyphenol-pentacyclic triterpene conjugates
Li, Haiwei,Li, Man,Xu, Renyang,Wang, Shouxin,Zhang, Yongmin,Zhang, Lihe,Zhou, Demin,Xiao, Sulong
, p. 560 - 568 (2019/01/03)
It is urgently necessary to develop more effective anti-influenza agents due to the continuous emergence of drug-resistant strains of influenza virus. Our earlier studies have identified that certain pentacyclic triterpene derivatives are effective inhibitors of influenza virus infection. In the present study, a series of C-28 modified pentacyclic triterpene derivatives via conjugation with a series of polyphenols were synthesized, and their antiviral activities against influenza A/WSN/33 (H1N1) virus in MDCK (Madin-Darby canine kidney) cells were evaluated. Four compounds 23m, 23o, 23q and 23s displayed robust anti-influenza potency with averaged IC50 values at the low-micromole level, surpassing the potency of oseltamivir. In addition, the in vitro cytotoxic activity of the four conjugates against MDCK cells showed no toxicity at 100 μM. Further mechanism studies of compound 23s, one of the best representative conjugates with IC50 value of 5.80 μM and a selective index (SI) value of over 17.2, by hemagglutination inhibition (HI), surface plasmon resonance and molecular modeling indicated that this conjugate bound tightly to the viral envelope hemagglutinin (KD = 15.6 μM), thus blocking the invasion of influenza viruses into host cells.
