Structure–activity relationship studies on chalcone derivatives
摘要:
Some chalcones exert potent anti-inflammatory activities. 2,5-Dialkoxychalcones and 2',5'-dihydroxy-4-chloro-dihydrochalcone inhibited nitric oxide (NO) production in lipopolysaccharide (LPS)/interferon-gamma (IFN-gamma)-activated N9 microglial cells and in LPS-activated RAW 264.7 macrophage-like cells have been demonstrated in our previous reports. These compounds also suppressed the inducible NO synthase (iNOS) expression and cyclooxygenase-2 (COX-2) activity in RAW 264.7 cells. In an effort to continually develop potent anti-inflammatory agent, a series of chalcones were prepared by Claisen-Schmidt condensation of appropriate acetophenones with appropriate aromatic aldehyde and then evaluated their inhibitory effects on the activation of mast cells, neutrophils, macrophages, and microglial cells. Most of the 2',5-dihydroxychaclone derivatives exhibited potent inhibitory effects on the release of beta-glucuronidase and lysozyme from rat neutrophils stimulated with formyl-Met-Leu-Phe (fMLP)/cytochalasin B (CB). Some chalcones showed potent inhibitory effects on superoxide anion generation in rat neutrophils in response to fMLP/CB. Compounds 1 and 5 exhibited potent inhibitory effects on NO production in macrophages and microglial cells. Compound 11 showed inhibitory effect on NO production and iNOS protein expression in RAW 264.7 cells. The present results demonstrated that most of the 2', 5'-dihydroxychaclones have anti-inflammatory effects. The potent inhibitory effect of 2',5'-dibydroxy-dihydrochaclones on NO production in LPS-activated macrophage, probably through the suppression of iNOS protein expression, is proposed to be useful for the relief of septic shock. (C) 2002 Elsevier Science Ltd. All rights reserved.
Novel chalcone derivatives and pharmaceutical compositions comprising the same
申请人:KAOHSIUNG MEDICAL UNIVERSITY
公开号:US20040176471A1
公开(公告)日:2004-09-09
Disclosed herein are novel chalcone derivatives of formulas (I), (II) and (III):
1
wherein each of the substituents is given the definition as set forth in the Specification and Claims. These compounds are demonstrated to have anti-inflammatory activities and thus can be used in the treatment of an inflammatory disorder in a subject.
This paper reports the synthesis, electrochemical and spectroelectrochemical properties of peripheral tetra substituted phthalocyanines that include (E)-1-(2,5-dimethoxyphenyl)-3-(4 hydroxyphenyl)prop-2-en-1-one. Precursor phthalonitrile compound (3) for the formation of phthalocyanines was synthesized at first, then related phthalocyanine compounds CoII (Pc-4), CuII (Pc-5), ZnII (Pc-6), MnIIICl (Pc-7)
Synthetic 2′,5′-dimethoxychalcones as G2/M arrest-mediated apoptosis-inducing agents and inhibitors of nitric oxide production in rat macrophages
作者:Bai-Luh Wei、Chi-Huang Teng、Jih-Pyang Wang、Shen-Jeu Won、Chun-Nan Lin
DOI:10.1016/j.ejmech.2006.12.009
日期:2007.5
In an effort to develop novel antitumor or chemopreventive agents, a series of 2',5'-dimethoxychalcone derivatives were prepared by Claisen-Schmidt condensation of appropriate acetophenones with suitable aromatic aldehyde. In vitro screening revealed low micromolar activity (IC50) against several human cancer tines. Activity in MCF-7 cells correlated with the ability to induce G(2)/M arrest-mediated apoptosis following drug treatment by the most potent agent, 8, an observation further reinforced by fluorescence microscopy. Compounds 3, 8, and 10 showed potent inhibitory effect on NO production in lipopolysaccharide (LPS)-activated RAW 264.7 macrophage-like cells. The present results demonstrated that 3, 8, and 10 are potential anti-inflammatory and cancer chemopreventive agents. (c) 2007 Elsevier Masson SAS. All rights reserved.
Amino acid and peptide prodrugs of diphenylpropanones positive allosteric modulators of α7 nicotinic receptors with analgesic activity
作者:Beatriz Balsera、José Mulet、Salvador Sala、Francisco Sala、Roberto de la Torre-Martínez、Sara González-Rodríguez、Adrián Plata、Lieve Naesens、Asia Fernández-Carvajal、Antonio Ferrer-Montiel、Manuel Criado、María Jesús Pérez de Vega、Rosario González-Muñiz
DOI:10.1016/j.ejmech.2017.10.083
日期:2018.1
preparation of aminoacid and peptide derivatives as prodrugs of these modulators with the aim of improving their in vivo biological activity. While the valine derivative showed very short half life in aqueous solutions to be considered a prodrug, Val-Val and Val-Pro-Val are suitable precursors of the parent 1,3-diphenylpropanones, via chemical and enzymatic transformation, respectively. Compounds 19 (Val-Val)