Potent antimitotic and cell growth inhibitory properties of substituted chalcones
摘要:
A series of substituted chalcones was synthesised and screened for cytotoxic activity against the K562 human leukaemia cell line. (E)-3-(3"-Hydroxy-4"-methoxyphenyl)-2-methyl-1-(3',4',5'-trimethoxyphenyl)-prop-2-en-1-one [IC50 (K562) 0.21 nM] was found to be the most active. A relationship between the conformation and cytotoxicity of the chalcones is discussed. (C) 1998 Elsevier Science Ltd. All rights reserved.
The present invention relates to compounds of the formula (I) and pharmaceutically acceptable salts and solvates thereof, wherein the substituents are defined herein, to compositions containing such compounds and to the uses of such compounds for the treatment of allergic and respiratory conditions.
Combretastatin-like chalcones as inhibitors of microtubule polymerization. Part 1: Synthesis and biological evaluation of antivascular activity
作者:Sylvie Ducki、David Rennison、Meiko Woo、Alexander Kendall、Jérémie Fournier Dit Chabert、Alan T. McGown、Nicholas J. Lawrence
DOI:10.1016/j.bmc.2009.09.039
日期:2009.11
The alpha-methyl chalcone SD400 is a potent inhibitor of tubulin assembly and possesses potent anticancer activity. Various chalcone analogues were synthesized and evaluated for their cell growth inhibitory properties against the K562 human chronic myelogenous leukemia cell line (SD400, IC50 0.21 nM; combretastatin A4 CA4, IC50 2.0 nM). Cell cycle analysis by flow cytometry indicated that these agents are antimitotic (SD400, 83% of the cells are in G(2)/M phase; CA4 90%). They inhibit tubulin assembly at low concentration (SD400, IC50 0.46 mu M; CA4, 0.10 mu M) and compete with [H-3] colchicine for binding to tubulin (8% [H-3] colchicine remained bound to tubulin after competition with SD400 or CA4). Upon treatment with SD400, remarkable cell shape changes were elicited in HUVEC cells, consistent with vasculature damaging activity. (C) 2009 Elsevier Ltd. All rights reserved.
VIRAL POLYMERASE INHIBITORS
申请人:Beaulieu Pierre
公开号:US20120101091A1
公开(公告)日:2012-04-26
The present application provides compounds of formula I wherein X, Y, R
2
, n, R
5
and R
6
are defined herein, useful as inhibitors of the hepatitis C virus NS5B polymerase The present application also provides pharmaceutical compositions containing said compounds, methods of using said compounds as pharmaceuticals alone or with other antiviral agent in the treatment of a hepatitis C viral infection in a mammal having or at risk of having the infection.
Methods for biomass Deconstruction and Purification
申请人:Qiao Ming
公开号:US20120323053A1
公开(公告)日:2012-12-20
The present invention provides processes for deconstructing and purifying biomass using water. The method includes the steps of loading a reactor with biomass and water, establishing and maintaining a deconstruction temperature and pressure for a deconstruction period, flushing the reactor with water, and repeating these steps to produce a solid phase and a biomass hydrolysate.
SOLVOLYSIS OF BIOMASS TO PRODUCE AQUEOUS AND ORGANIC PRODUCTS
申请人:Qiao Ming
公开号:US20120318258A1
公开(公告)日:2012-12-20
The present invention provides processes for deconstructing biomass to produce aqueous and organic products using a solvent produced in a bioreforming reaction.