BF<sub>3</sub>-OEt<sub>2</sub> Catalyzed C3-Alkylation of Indole: Synthesis of Indolylsuccinimidesand Their Cytotoxicity Studies

A simple and efficient BF<sub>3</sub>-OEt<sub>2</sub> promoted C3-alkylation of indole has been developed to obtain3-indolylsuccinimidesfrom commercially available indoles and maleimides, with excellent yields under mild reaction conditions. Furthermore, anti-proliferative ac...

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Main Authors: Iqbal N. Shaikh, Abdul Rahim, Shaikh Faazil, Syed Farooq Adil, Mohamed E. Assal, Mohammad Rafe Hatshan
Format: Article
Language:English
Published: MDPI AG 2021-04-01
Series:Molecules
Subjects:
Online Access:https://www.mdpi.com/1420-3049/26/8/2202
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author Iqbal N. Shaikh
Abdul Rahim
Shaikh Faazil
Syed Farooq Adil
Mohamed E. Assal
Mohammad Rafe Hatshan
author_facet Iqbal N. Shaikh
Abdul Rahim
Shaikh Faazil
Syed Farooq Adil
Mohamed E. Assal
Mohammad Rafe Hatshan
author_sort Iqbal N. Shaikh
collection DOAJ
description A simple and efficient BF<sub>3</sub>-OEt<sub>2</sub> promoted C3-alkylation of indole has been developed to obtain3-indolylsuccinimidesfrom commercially available indoles and maleimides, with excellent yields under mild reaction conditions. Furthermore, anti-proliferative activity of these conjugates was evaluated against HT-29 (Colorectal), Hepg2 (Liver) and A549 (Lung) human cancer cell lines. One of the compounds, <b>3w</b>, having <i>N</i>,<i>N</i>-Dimethylatedindolylsuccinimide is a potent congener amongst the series with IC<sub>50</sub> value 0.02 µM and 0.8 µM against HT-29 and Hepg2 cell lines, respectively, and compound <b>3i</b> was most active amongst the series with IC<sub>50</sub> value 1.5 µM against A549 cells. Molecular docking study and mechanism of reaction have briefly beendiscussed. This method is better than previous reports in view of yield and substrate scope including electron deficient indoles.
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spelling doaj.art-6afe5aec9d2f40febb49bb76c8cb27e12023-11-21T15:06:06ZengMDPI AGMolecules1420-30492021-04-01268220210.3390/molecules26082202BF<sub>3</sub>-OEt<sub>2</sub> Catalyzed C3-Alkylation of Indole: Synthesis of Indolylsuccinimidesand Their Cytotoxicity StudiesIqbal N. Shaikh0Abdul Rahim1Shaikh Faazil2Syed Farooq Adil3Mohamed E. Assal4Mohammad Rafe Hatshan5Department of Chemistry, Poona College of Arts, Science and Commerce, Camp, Pune 411 001, IndiaDepartment of Chemistry, Poona College of Arts, Science and Commerce, Camp, Pune 411 001, IndiaDepartment of Chemistry, Poona College of Arts, Science and Commerce, Camp, Pune 411 001, IndiaDepartment of Chemistry, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi ArabiaDepartment of Chemistry, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi ArabiaDepartment of Chemistry, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi ArabiaA simple and efficient BF<sub>3</sub>-OEt<sub>2</sub> promoted C3-alkylation of indole has been developed to obtain3-indolylsuccinimidesfrom commercially available indoles and maleimides, with excellent yields under mild reaction conditions. Furthermore, anti-proliferative activity of these conjugates was evaluated against HT-29 (Colorectal), Hepg2 (Liver) and A549 (Lung) human cancer cell lines. One of the compounds, <b>3w</b>, having <i>N</i>,<i>N</i>-Dimethylatedindolylsuccinimide is a potent congener amongst the series with IC<sub>50</sub> value 0.02 µM and 0.8 µM against HT-29 and Hepg2 cell lines, respectively, and compound <b>3i</b> was most active amongst the series with IC<sub>50</sub> value 1.5 µM against A549 cells. Molecular docking study and mechanism of reaction have briefly beendiscussed. This method is better than previous reports in view of yield and substrate scope including electron deficient indoles.https://www.mdpi.com/1420-3049/26/8/2202C3-alkylationindoleindolylsuccinimidescytotoxicityanticancer
spellingShingle Iqbal N. Shaikh
Abdul Rahim
Shaikh Faazil
Syed Farooq Adil
Mohamed E. Assal
Mohammad Rafe Hatshan
BF<sub>3</sub>-OEt<sub>2</sub> Catalyzed C3-Alkylation of Indole: Synthesis of Indolylsuccinimidesand Their Cytotoxicity Studies
Molecules
C3-alkylation
indole
indolylsuccinimides
cytotoxicity
anticancer
title BF<sub>3</sub>-OEt<sub>2</sub> Catalyzed C3-Alkylation of Indole: Synthesis of Indolylsuccinimidesand Their Cytotoxicity Studies
title_full BF<sub>3</sub>-OEt<sub>2</sub> Catalyzed C3-Alkylation of Indole: Synthesis of Indolylsuccinimidesand Their Cytotoxicity Studies
title_fullStr BF<sub>3</sub>-OEt<sub>2</sub> Catalyzed C3-Alkylation of Indole: Synthesis of Indolylsuccinimidesand Their Cytotoxicity Studies
title_full_unstemmed BF<sub>3</sub>-OEt<sub>2</sub> Catalyzed C3-Alkylation of Indole: Synthesis of Indolylsuccinimidesand Their Cytotoxicity Studies
title_short BF<sub>3</sub>-OEt<sub>2</sub> Catalyzed C3-Alkylation of Indole: Synthesis of Indolylsuccinimidesand Their Cytotoxicity Studies
title_sort bf sub 3 sub oet sub 2 sub catalyzed c3 alkylation of indole synthesis of indolylsuccinimidesand their cytotoxicity studies
topic C3-alkylation
indole
indolylsuccinimides
cytotoxicity
anticancer
url https://www.mdpi.com/1420-3049/26/8/2202
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