Synthesis of 1,4-dihydropyrazolo[4,3-b]indoles via intramolecular C(sp2)-N bond formation involving nitrene insertion, DFT study and their anticancer assessment
作者:Manpreet Kaur、Vikrant Mehta、Aabid Abdullah Wani、Sahil Arora、Prasad V. Bharatam、Ashoke Sharon、Sandeep Singh、Raj Kumar
DOI:10.1016/j.bioorg.2021.105114
日期:2021.9
deoxygenation of o-nitrophenyl-substituted N-aryl pyrazoles and subsequent intramolecular (sp2)-N bond formation under microwave irradiation expedite modified Cadogan condition. This method allows access to NH-free as well as N-substituted fused indoles. DFT study and controlled experiments highlighted the role of nitrene insertion as one of the plausible reaction mechanisms. Furthermore, the target compounds
本文我们报告了一系列未报告1,4-二氢吡唑并[4,3-的一种新的合成路线b〕吲哚(6 - 8通过的脱氧)ö硝基苯基取代ñ -芳基吡唑和随后的分子内(SP 2) -微波辐射下的 N 键形成加速了改良的 Cadogan 条件。这种方法允许访问无 NH 以及N-取代的稠合吲哚。DFT 研究和对照实验强调了氮烯插入作为可能的反应机制之一的作用。此外,目标化合物在低微摩尔浓度下对肺癌 (A549)、结肠 (HCT-116) 和乳腺癌 (MDA-MB-231 和 MCF-7) 癌细胞系表现出细胞毒性,诱导 ROS 生成并改变线粒体高侵袭性 MDA-MB-231 细胞的膜电位。进一步的研究表明,这些化合物是选择性 Topo I ( 6h ) 或 Topo II ( 7a, 7b ) 抑制剂。