The inexpensive Br2 can serve as a novel Lewis acid catalyst for Friedel–Crafts alkylation of indoles with α,β-unsaturatedketones. Under the catalysis of only 3 mol % of Br2, this Michael addition proceeded smoothly with high efficiency and broad substrate scope. Moreover, theoretical calculations suggested that Br2 possesses only the modest power to activate chalcones and is inferior to most tested
Synthesis and in vitro cytotoxicity study of 3-(1H-indol-3-yl)-1,3-diphenylpropan-1-ones
作者:Jagadeesh N. Masagalli、Kittappa M. Mahadevan、Honnali Jayadevappa、Hosanagara N. Harishkumar、Rajesha Ganalu、Prashantha Nagaraja
DOI:10.1007/s00044-013-0875-y
日期:2014.6
A series of 3-(1H-indol-3-yl)-1,3-diphenylpropan-1-ones 3a-l were synthesized in good to excellent yield by Michael addition of indole 1 with alpha,beta-unsaturated ketones 2a-l in presence of indium(III) sulphate (20 mol%). The structure of the title compounds were established by H-1 NMR, C-13 NMR, mass and elemental analysis. All the synthesized compounds were evaluated for in vitro cytotoxicity against five different cancer cell lines such as ACHN (human kidney adenocarcinoma), Panc1 (pancreatic), Calu1 (lung), H460 (non small cell lung), HCT116 (human colon cancer cell) and MCF10A (normal breast epithelium) using propidium iodide staining assay protocol. The result showed that the compounds 3e and 3l have excellent cytotoxic activity with the IC50 value ranging from 1.4-2.7 to 2.4-3.4 mu M, respectively, in comparison with the other compounds, Flavopiridol and Gemcitabine were employed as a positive control. The findings conferred 3-(1H-indol-3-yl)-1,3-diphenylpropan-1-ones seem to be promising candidates for the development of new anticancer drugs.