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.
Structure–activity relationship studies on chalcone derivatives
作者:Horng-Huey Ko、Lo-Ti Tsao、Kun-Lung Yu、Cheng-Tsung Liu、Jih-Pyang Wang、Chun-Nan Lin
DOI:10.1016/s0968-0896(02)00312-7
日期:2003.1
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.
Synthetic chalcones as potential anti-inflammatory and cancer chemopreventive agents
作者:Shen-Jeu Won、Cheng-Tsung Liu、Lo-Ti Tsao、Jing-Ru Weng、Horng-Huey Ko、Jih-Pyang Wang、Chun-Nan Lin
DOI:10.1016/j.ejmech.2004.09.006
日期:2005.1
cells revealed significant or marginal cytotoxic effects against several human cancer lines. Compound 12 manifested potent selective cytotoxicity against human MCF-7 cells and caused cell death by apoptosis. The present results demonstrated that 1-3, and 7 have anti-inflammatory effects and 5, 6, and 12 are potential anti-inflammatory and cancerchemopreventiveagents.