Synthesis and Toxicity Evaluation of New Pyrroles Obtained by the Reaction of Activated Alkynes with 1-Methyl-3-(cyanomethyl)benzimidazolium Bromide
A series of new pyrrole derivatives were designed as chemical analogs of the 1,4-dihydropyridines drugs in order to develop future new calcium channel blockers. The new tri- and tetra-substituted <i>N</i>-arylpyrroles were synthesized by the one-pot reaction of 1-methyl-3-cyanomethyl ben...
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oai:doaj.org-article:50ba9b3b4d214fd69a0031ea6801b0232021-11-11T18:27:01ZSynthesis and Toxicity Evaluation of New Pyrroles Obtained by the Reaction of Activated Alkynes with 1-Methyl-3-(cyanomethyl)benzimidazolium Bromide10.3390/molecules262164351420-3049https://doaj.org/article/50ba9b3b4d214fd69a0031ea6801b0232021-10-01T00:00:00Zhttps://www.mdpi.com/1420-3049/26/21/6435https://doaj.org/toc/1420-3049A series of new pyrrole derivatives were designed as chemical analogs of the 1,4-dihydropyridines drugs in order to develop future new calcium channel blockers. The new tri- and tetra-substituted <i>N</i>-arylpyrroles were synthesized by the one-pot reaction of 1-methyl-3-cyanomethyl benzimidazolium bromide with substituted alkynes having at least one electron-withdrawing substituent, in 1,2-epoxybutane, acting both as the solvent and reagent to generate the corresponding benzimidazolium N3-ylide. The structural characterization of the new substituted pyrroles was based on IR, NMR spectroscopy as well as on single crystal X-ray analysis. The toxicity of the new compounds was assessed on the plant cell using <i>Triticum aestivum</i> L. species and on the animal cell using <i>Artemia franciscana</i> Kellogg and <i>Daphnia magna</i> Straus crustaceans. The compounds showed minimal phytotoxicity on <i>Triticum</i> rootlets and virtually no acute toxicity on <i>Artemia</i> nauplii, while on <i>Daphnia magna</i>, it induced moderate to high toxicity, similar to nifedipine. Our research indicates that the newly synthetized pyrrole derivatives are promising molecules with biological activity and low acute toxicity.Beatrice-Cristina IvanFlorea DumitrascuAdriana Iuliana AnghelRobert Viorel AncuceanuSergiu ShovaDenisa DumitrescuConstantin DraghiciOctavian Tudorel OlaruGeorge Mihai NitulescuMihaela DinuStefania-Felicia BarbuceanuMDPI AGarticlebenzimidazolium bromidealkynes1,3-dipolar cycloadditionpyrrolesX-ray diffractiontoxicity evaluationOrganic chemistryQD241-441ENMolecules, Vol 26, Iss 6435, p 6435 (2021) |
institution |
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language |
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topic |
benzimidazolium bromide alkynes 1,3-dipolar cycloaddition pyrroles X-ray diffraction toxicity evaluation Organic chemistry QD241-441 |
spellingShingle |
benzimidazolium bromide alkynes 1,3-dipolar cycloaddition pyrroles X-ray diffraction toxicity evaluation Organic chemistry QD241-441 Beatrice-Cristina Ivan Florea Dumitrascu Adriana Iuliana Anghel Robert Viorel Ancuceanu Sergiu Shova Denisa Dumitrescu Constantin Draghici Octavian Tudorel Olaru George Mihai Nitulescu Mihaela Dinu Stefania-Felicia Barbuceanu Synthesis and Toxicity Evaluation of New Pyrroles Obtained by the Reaction of Activated Alkynes with 1-Methyl-3-(cyanomethyl)benzimidazolium Bromide |
description |
A series of new pyrrole derivatives were designed as chemical analogs of the 1,4-dihydropyridines drugs in order to develop future new calcium channel blockers. The new tri- and tetra-substituted <i>N</i>-arylpyrroles were synthesized by the one-pot reaction of 1-methyl-3-cyanomethyl benzimidazolium bromide with substituted alkynes having at least one electron-withdrawing substituent, in 1,2-epoxybutane, acting both as the solvent and reagent to generate the corresponding benzimidazolium N3-ylide. The structural characterization of the new substituted pyrroles was based on IR, NMR spectroscopy as well as on single crystal X-ray analysis. The toxicity of the new compounds was assessed on the plant cell using <i>Triticum aestivum</i> L. species and on the animal cell using <i>Artemia franciscana</i> Kellogg and <i>Daphnia magna</i> Straus crustaceans. The compounds showed minimal phytotoxicity on <i>Triticum</i> rootlets and virtually no acute toxicity on <i>Artemia</i> nauplii, while on <i>Daphnia magna</i>, it induced moderate to high toxicity, similar to nifedipine. Our research indicates that the newly synthetized pyrrole derivatives are promising molecules with biological activity and low acute toxicity. |
format |
article |
author |
Beatrice-Cristina Ivan Florea Dumitrascu Adriana Iuliana Anghel Robert Viorel Ancuceanu Sergiu Shova Denisa Dumitrescu Constantin Draghici Octavian Tudorel Olaru George Mihai Nitulescu Mihaela Dinu Stefania-Felicia Barbuceanu |
author_facet |
Beatrice-Cristina Ivan Florea Dumitrascu Adriana Iuliana Anghel Robert Viorel Ancuceanu Sergiu Shova Denisa Dumitrescu Constantin Draghici Octavian Tudorel Olaru George Mihai Nitulescu Mihaela Dinu Stefania-Felicia Barbuceanu |
author_sort |
Beatrice-Cristina Ivan |
title |
Synthesis and Toxicity Evaluation of New Pyrroles Obtained by the Reaction of Activated Alkynes with 1-Methyl-3-(cyanomethyl)benzimidazolium Bromide |
title_short |
Synthesis and Toxicity Evaluation of New Pyrroles Obtained by the Reaction of Activated Alkynes with 1-Methyl-3-(cyanomethyl)benzimidazolium Bromide |
title_full |
Synthesis and Toxicity Evaluation of New Pyrroles Obtained by the Reaction of Activated Alkynes with 1-Methyl-3-(cyanomethyl)benzimidazolium Bromide |
title_fullStr |
Synthesis and Toxicity Evaluation of New Pyrroles Obtained by the Reaction of Activated Alkynes with 1-Methyl-3-(cyanomethyl)benzimidazolium Bromide |
title_full_unstemmed |
Synthesis and Toxicity Evaluation of New Pyrroles Obtained by the Reaction of Activated Alkynes with 1-Methyl-3-(cyanomethyl)benzimidazolium Bromide |
title_sort |
synthesis and toxicity evaluation of new pyrroles obtained by the reaction of activated alkynes with 1-methyl-3-(cyanomethyl)benzimidazolium bromide |
publisher |
MDPI AG |
publishDate |
2021 |
url |
https://doaj.org/article/50ba9b3b4d214fd69a0031ea6801b023 |
work_keys_str_mv |
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