Structure Activity Relationship of Arylidene Pyrrolo and Pyrido [2,1-b] Quinazolones as Cytotoxic Agents: Synthesis, SAR Studies, Biological Evaluation and Docking Studies
作者:Veenu Mangla、Kunal Nepali、Gagandip Singh、Jagjeet Singh、Santosh Guru、Manish Gupta、Priya Mahajan、Ajit Saxena、Kanaya Dhar
DOI:10.2174/1573406411309050003
日期:2013.6.1
Tubulin is the one of the most useful and strategic molecular targets for anticancer drugs. Agents that bind in
Colchicine-binding site of tubulin include Phenstatin, Combretastatin A-4, Colchicine, Steganacin, Podophyllotoxin and
certain other synthetic analogues of these compounds. Arylidene pyrollo and pyrido [2,1- b] quinazolones (isoindigatone
and its synthetic analogues) have been earlier reported to be tubulin inhibitors evidenced by tubulin polymerization assay.
The present study is an extension of the library of the isoindigatone and its synthetic analogues to generate the structure
activity relationship. The study explores the role of the arylidene ring and also provides some intresting observations such
as the placement of bicyclic ring such as naphylidene for potential activity. Some of the important interactions of KNH- 3
and KNH-11 with the amino acid residues of active site of Tubulin have also been observed by molecular modeling.
微管蛋白是抗癌药物最有用、最具战略意义的分子靶点之一。能与微管蛋白的秋水仙碱结合位点结合的药物包括苯司他丁(Phenstatin)、考来替丁 A-4、秋水仙碱(Colchicine)、司替加辛(Steganacin)、鬼臼毒素(Podophyllotoxin)以及这些化合物的某些合成类似物。早先有报告称,亚芳基吡咯并吡啶并[2,1- b]喹唑酮(异茚地加通及其合成类似物)是一种管蛋白抑制剂,这在管蛋白聚合试验中得到了证明。 本研究是对异茚地加通及其合成类似物库的扩展,以生成结构活性关系。该研究探讨了亚芳基环的作用,还提供了一些有趣的观察结果,如将双环(如亚萘基)置于潜在活性中。通过分子建模,还观察到 KNH- 3 和 KNH-11 与 Tubulin 活性位点氨基酸残基的一些重要相互作用。