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Ivan BC, Dumitrascu F, Anghel AI, Ancuceanu RV, Shova S, Dumitrescu D, Draghici C, Olaru OT, Nitulescu GM, Dinu M, Barbuceanu SF. Synthesis and Toxicity Evaluation of New Pyrroles Obtained by the Reaction of Activated Alkynes with 1-Methyl-3-(cyanomethyl)benzimidazolium Bromide. Molecules 2021; 26:6435. [PMID: 34770844 PMCID: PMC8587665 DOI: 10.3390/molecules26216435] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2021] [Revised: 10/21/2021] [Accepted: 10/22/2021] [Indexed: 11/16/2022] Open
Abstract
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 N-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 Triticum aestivum L. species and on the animal cell using Artemia franciscana Kellogg and Daphnia magna Straus crustaceans. The compounds showed minimal phytotoxicity on Triticum rootlets and virtually no acute toxicity on Artemia nauplii, while on Daphnia magna, 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.
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Affiliation(s)
- Beatrice-Cristina Ivan
- Faculty of Pharmacy, “Carol Davila” University of Medicine and Pharmacy, 6 Traian Vuia Street, 020956 Bucharest, Romania; (B.-C.I.); (A.I.A.); (R.V.A.); (G.M.N.); (M.D.); (S.-F.B.)
| | - Florea Dumitrascu
- “Costin D. Nenitescu” Center of Organic Chemistry, Romanian Academy, 202B Splaiul Independenței, 060023 Bucharest, Romania;
| | - Adriana Iuliana Anghel
- Faculty of Pharmacy, “Carol Davila” University of Medicine and Pharmacy, 6 Traian Vuia Street, 020956 Bucharest, Romania; (B.-C.I.); (A.I.A.); (R.V.A.); (G.M.N.); (M.D.); (S.-F.B.)
| | - Robert Viorel Ancuceanu
- Faculty of Pharmacy, “Carol Davila” University of Medicine and Pharmacy, 6 Traian Vuia Street, 020956 Bucharest, Romania; (B.-C.I.); (A.I.A.); (R.V.A.); (G.M.N.); (M.D.); (S.-F.B.)
| | - Sergiu Shova
- Laboratory of Inorganic Polymers, “Petru Poni” Institute of Macromolecular Chemistry, 41A Aleea Grigore Ghica Voda, 700487 Iasi, Romania;
| | - Denisa Dumitrescu
- Faculty of Pharmacy, “Ovidius” University Constanta, Cpt. Av. Al. Serbanescu Street, 900470 Constanta, Romania;
| | - Constantin Draghici
- “Costin D. Nenitescu” Center of Organic Chemistry, Romanian Academy, 202B Splaiul Independenței, 060023 Bucharest, Romania;
| | - Octavian Tudorel Olaru
- Faculty of Pharmacy, “Carol Davila” University of Medicine and Pharmacy, 6 Traian Vuia Street, 020956 Bucharest, Romania; (B.-C.I.); (A.I.A.); (R.V.A.); (G.M.N.); (M.D.); (S.-F.B.)
| | - George Mihai Nitulescu
- Faculty of Pharmacy, “Carol Davila” University of Medicine and Pharmacy, 6 Traian Vuia Street, 020956 Bucharest, Romania; (B.-C.I.); (A.I.A.); (R.V.A.); (G.M.N.); (M.D.); (S.-F.B.)
| | - Mihaela Dinu
- Faculty of Pharmacy, “Carol Davila” University of Medicine and Pharmacy, 6 Traian Vuia Street, 020956 Bucharest, Romania; (B.-C.I.); (A.I.A.); (R.V.A.); (G.M.N.); (M.D.); (S.-F.B.)
| | - Stefania-Felicia Barbuceanu
- Faculty of Pharmacy, “Carol Davila” University of Medicine and Pharmacy, 6 Traian Vuia Street, 020956 Bucharest, Romania; (B.-C.I.); (A.I.A.); (R.V.A.); (G.M.N.); (M.D.); (S.-F.B.)
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Microwave Assisted Reactions of Fluorescent Pyrrolodiazine Building Blocks. Molecules 2019; 24:molecules24203760. [PMID: 31635419 PMCID: PMC6832281 DOI: 10.3390/molecules24203760] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2019] [Revised: 10/07/2019] [Accepted: 10/16/2019] [Indexed: 11/29/2022] Open
Abstract
We report here the synthesis and optical spectral properties of several new pyrrolodiazine derivatives. The luminescent heterocycles were synthesized by 1,3-dipolar cycloaddition reactions between N-alkylated pyridazine and methylpropiolate or dimethyl acetylenedicarboxylate (DMAD). The pyrrolopyridazine derivatives are blue emitters with moderate quantum yields (around 25%) in the case of pyrrolopyridazines and negligible yet measurable emission for pyrrolophthalazines. In a subsequent step towards including the pyrrolodiazine moiety, given its spectral properties in various macromolecular frameworks such as biological molecules, a subset of the synthetized compounds has been subjected to α-bromination. A selective and efficient way for α-bromination in heterogeneous catalysis of pyrrolodiazine derivatives under microwave (MW) irradiation is presented. We report substantially higher yields under MW irradiation, whereas the solvent amounts required are at least five-fold less compared to classical heating.
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Gulevskaya AV, Nelina-Nemtseva JI. 1,3-Dipolar cycloaddition reactions of azomethine ylides and alkynes. Chem Heterocycl Compd (N Y) 2019. [DOI: 10.1007/s10593-019-02398-5] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Synthesis of new pyrrolo[2,1-a]phthalazine derivatives via multicomponent reaction of phthalazine with 1,1-dicyanoalkenes and alkyl isocyanides. Chem Heterocycl Compd (N Y) 2017. [DOI: 10.1007/s10593-017-2071-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Vimala G, Krishnan SM, Perumal PT, SubbiahPandi A. 5,6-Dipropylphthalazino[2,3- a]cinnoline-8,13-dione. IUCRDATA 2016. [DOI: 10.1107/s241431461600688x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
In the title compound, C22H22N2O2, the two central fused pyridazine rings have screw-boat conformations and the dihedral angle between their mean planes is 36.22 (8)°. The mean plane of the cinnoline ring system makes a dihedral angle of 46.56 (5)° with the mean plane of the phthalazine ring to which it is fused. In the crystal, molecules are linkedviaC—H...O hydrogen bonds, forming chains along thebaxis. The chains are reinforced by C—H...π interactions.
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Albota F, Drăghici C, Caira MR, Dumitrascu F. 1,3-Dipolar cycloaddition between acetylenic dipolarophiles and sydnone-N-ylides as bis(1,3-dipoles). Tetrahedron 2015. [DOI: 10.1016/j.tet.2015.10.021] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Popa MM, Georgescu E, Draghici C, Georgescu F, Dumitrascu F, Dumitrescu D. Coumarin substituted pyrrolo-fused heterocyclic systems by 1,3-dipolar cycloadditon reactions. MONATSHEFTE FUR CHEMIE 2015. [DOI: 10.1007/s00706-015-1563-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Georgescu E, Nicolescu A, Georgescu F, Teodorescu F, Marinescu D, Macsim AM, Deleanu C. New highlights of the syntheses of pyrrolo[1,2-a]quinoxalin-4-ones. Beilstein J Org Chem 2014; 10:2377-87. [PMID: 25383108 PMCID: PMC4222434 DOI: 10.3762/bjoc.10.248] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2014] [Accepted: 09/18/2014] [Indexed: 11/23/2022] Open
Abstract
The one-pot three-component reactions of 1-substituted benzimidazoles with ethyl bromoacetate and electron-deficient alkynes, in 1,2-epoxybutane, gave a variety of pyrrolo[1,2-a]quinoxalin-4-ones and pyrrolo[1,2-a]benzimidazoles. The influence of experimental conditions on the course of reaction was investigated. A novel synthetic pathway starting from benzimidazoles unsubstituted at the five membered ring, alkyl bromoacetates and non-symmetrical electron-deficient alkynes in the molar ratio of 1:2:1, in 1,2-epoxybutane at reflux temperature, led directly to pyrrolo[1,2-a]quinoxalin-4-ones in fair yield by an one-pot three-component reaction.
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Affiliation(s)
- Emilian Georgescu
- Research Center Oltchim, Str. Uzinei 1, RO-240050, Ramnicu Valcea, Romania
| | - Alina Nicolescu
- C. D. Nenitzescu Centre of Organic Chemistry, Romanian Academy, Spl. Independentei 202-B, RO-060023 Bucharest, Romania
- Petru Poni Institute of Macromolecular Chemistry, Romanian Academy, Aleea Grigore Ghica Voda 41-A, RO-700487 Iasi, Romania
| | - Florentina Georgescu
- Research Dept., Teso Spec SRL, Str. Muncii 53, RO-915200 Fundulea, Calarasi, Romania
| | - Florina Teodorescu
- C. D. Nenitzescu Centre of Organic Chemistry, Romanian Academy, Spl. Independentei 202-B, RO-060023 Bucharest, Romania
| | - Daniela Marinescu
- Research Center Oltchim, Str. Uzinei 1, RO-240050, Ramnicu Valcea, Romania
| | - Ana-Maria Macsim
- Petru Poni Institute of Macromolecular Chemistry, Romanian Academy, Aleea Grigore Ghica Voda 41-A, RO-700487 Iasi, Romania
| | - Calin Deleanu
- C. D. Nenitzescu Centre of Organic Chemistry, Romanian Academy, Spl. Independentei 202-B, RO-060023 Bucharest, Romania
- Petru Poni Institute of Macromolecular Chemistry, Romanian Academy, Aleea Grigore Ghica Voda 41-A, RO-700487 Iasi, Romania
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7,8,9,10-Tetrahydropyrrolo[2,1-a]isoquinolines in the search for new indolizine derivatives. Tetrahedron Lett 2014. [DOI: 10.1016/j.tetlet.2014.08.054] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Koszarna B, Matczak R, Krzeszewski M, Vakuliuk O, Klajn J, Tasior M, Nowicki JT, Gryko DT. Direct arylation of electron-poor indolizines. Tetrahedron 2014. [DOI: 10.1016/j.tet.2013.11.088] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Synthesis of pyrrolo[2,1-a]isoquinolines by multicomponent 1,3-dipolar cycloaddition. Molecules 2013; 18:2635-45. [PMID: 23446920 PMCID: PMC6270538 DOI: 10.3390/molecules18032635] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2013] [Revised: 02/18/2013] [Accepted: 02/18/2013] [Indexed: 11/17/2022] Open
Abstract
Pyrrolo[2,1-a]isoquinoline derivatives were synthesized by one-pot three-component reactions starting from isoquinoline, 2-bromoacetophenones and different non-symmetrical acetylenic dipolarophiles using 1,2-epoxypropane as solvent. The structure of the compounds was assigned by IR and NMR spectroscopy.
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Georgescu E, Dumitrascu F, Georgescu F, Draghici C, Barbu L. A Novel Approach for the Synthesis of 5-Pyridylindolizine Derivativesvia2-(2-Pyridyl)pyridinium Ylides. J Heterocycl Chem 2013. [DOI: 10.1002/jhet.997] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Emilian Georgescu
- Research Center Oltchim; 1 Uzinei Street; 240050; Ramnicu Valcea; Romania
| | - Florea Dumitrascu
- Centre of Organic Chemistry “C. D. Nenitzescu”; Romanian Academy; 202B Spl. Independentei; Bucharest; 060023; Romania
| | | | - Constantin Draghici
- Centre of Organic Chemistry “C. D. Nenitzescu”; Romanian Academy; 202B Spl. Independentei; Bucharest; 060023; Romania
| | - Loredana Barbu
- Centre of Organic Chemistry “C. D. Nenitzescu”; Romanian Academy; 202B Spl. Independentei; Bucharest; 060023; Romania
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Postolachi R, Danac R, Buurma NJ, Pui A, Balan M, Shova S, Deleanu C. New cycloimmonium ylide ligands and their palladium(ii) affinities. RSC Adv 2013. [DOI: 10.1039/c3ra41911h] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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Cai M. 5-Bromophthalazine hemihydrate. Acta Crystallogr Sect E Struct Rep Online 2012; 68:o2421. [PMID: 22904872 PMCID: PMC3414339 DOI: 10.1107/s1600536812030358] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2012] [Accepted: 07/03/2012] [Indexed: 12/01/2022]
Abstract
The title compound, C8H5BrN2·0.5H2O, is a phthalazine derivative synthesized from 3-bromobenzene-1,2-dicarbaldehyde and hydrazine. The molecule is essentially planar, the deviation from the mean plane of the phthalazine ring being 0.015 (3) Å. The O atom of the solvent water molecule is situated on a twofold rotation axis. In the crystal, O—H⋯N hydrogen bonds and short N⋯Br [2.980 (3) Å] contacts lead to the formation of a two-dimensional network parallel to (101).
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Georgescu E, Georgescu F, Popa MM, Draghici C, Tarko L, Dumitrascu F. Efficient one-pot, three-component synthesis of a library of pyrrolo[1,2-c]pyrimidine derivatives. ACS COMBINATORIAL SCIENCE 2012; 14:101-7. [PMID: 22270789 DOI: 10.1021/co2002125] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Herein is reported a simple and efficient one-pot three-component synthesis of pyrrolo[1,2-c]pyrimidine derivatives starting from various substituted pyrimidines, 2-bromoacetophenones, and electron deficient alkynes in epoxides acting both as reaction medium and HBr scavanger. This method proved to be very lucrative and avoids formation of ylide inactivation products. The synthesis represents an environmentally benign alternative to classical methods. The new library of compounds was briefly characterized regarding the improved Lipinski rule to asses the potential drug-likeness of the compounds. The majority of compounds are statisfing the Lipinski rule.
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Affiliation(s)
- Emilian Georgescu
- Research Center Oltchim, 1 Uzinei str., 240050 Ramnicu Valcea, Romania
| | | | - Marcel M. Popa
- Center for Organic Chemistry
“C.D. Nenitzescu”, Romanian Academy, 202 B, Spl. Independentei, 060023, Bucharest, Romania
| | - Constantin Draghici
- Center for Organic Chemistry
“C.D. Nenitzescu”, Romanian Academy, 202 B, Spl. Independentei, 060023, Bucharest, Romania
| | - Laszlo Tarko
- Center for Organic Chemistry
“C.D. Nenitzescu”, Romanian Academy, 202 B, Spl. Independentei, 060023, Bucharest, Romania
| | - Florea Dumitrascu
- Center for Organic Chemistry
“C.D. Nenitzescu”, Romanian Academy, 202 B, Spl. Independentei, 060023, Bucharest, Romania
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