Synthesis, antimycobacterial activity evaluation, and QSAR studies of chalcone derivatives
作者:P.M. Sivakumar、S. Prabu Seenivasan、Vanaja Kumar、Mukesh Doble
DOI:10.1016/j.bmcl.2006.12.112
日期:2007.3
In order to develop relatively small molecules as antimycobacterial agents, twenty-five chalcones were synthesized, their activity was evaluated, and quantitative structure-activity relationship (QSAR) was developed. The synthesis was based on the Claisen-Schimdt scheme and the resultant compounds were tested for antitubercular activity by luciferase reporter phage (LRP) assay. Compound C-24 was found to be the most active (similar to 99%) in this series based on the percentage reduction in Relative Light Units at both 50 and 100 mu g/ml levels, followed by compound C-21. Four compounds at the 50 mu g/ml and eight compounds at the 100 mu g/ml showed activity above 90% level. QSAR model was developed between activity and spatial, topological, and ADME descriptors for the 50 mu g/ml data. The statistical measures such as r, r(2), q(2), and F values obtained for the training set were in acceptable range and hence this relationship was used for the test set. The predictive ability of the model is satisfactory (q(2) = 0.56) and it can be used for designing similar group of compounds. (c) 2007 Elsevier Ltd. All rights reserved.
Synthesis and inhibitory activity of dimethylamino-chalcone derivatives on the induction of nitric oxide synthase
作者:Javier Rojas、José N Domı́nguez、Jaime E Charris、Gricela Lobo、Miguel Payá、M.Luisa Ferrándiz
DOI:10.1016/s0223-5234(02)01387-9
日期:2002.8
A series of nine dimethylamino-chalcone derivatives (1,3-diaryl-propenones) was synthesized and screened as potential inhibitors of NO and PGE(2) production in the RAW 264.7 macrophage cell line. 4-Dimethylamino-2',5'-dimethoxychalcone (6) was found to be the most potent and dual inhibitor (IC50s, in the submicromolar range) of NO and PGE(2) production. 2',6'-Dimethoxylation appeared to be an effective requirement for selective and potent inhibition of nitric oxide synthase induction as it was confirmed by Western blot analysis. Chalcone (6) at 25 mg kg(-1) by oral route, inhibited significantly the formation of oedema in the carrageenan-induced model of inflammation in mice. (C) 2002 Editions scientifiques et medicales Elsevier SAS. All rights reserved.