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Macsim AM, Georgescu E, Georgescu F, Filip P, Nicolescu A, Deleanu C. Benzimidazolium salts as starting materials or intermediates in 1,3-dipolar cycloadditions. MONATSHEFTE FUR CHEMIE 2021. [DOI: 10.1007/s00706-021-02795-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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W. Gribble G, Narayan E. Synthesis of Pyrrolo[1,2-c]pyrimidines. HETEROCYCLES 2021. [DOI: 10.3987/com-20-s(k)11] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Funt LD, Novikov MS, Khlebnikov AF. New applications of pyridinium ylides toward heterocyclic synthesis. Tetrahedron 2020. [DOI: 10.1016/j.tet.2020.131415] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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Georgescu E, Oancea A, Georgescu F, Nicolescu A, Oprita EI, Vladulescu L, Vladulescu MC, Oancea F, Shova S, Deleanu C. Schiff bases containing a furoxan moiety as potential nitric oxide donors in plant tissues. PLoS One 2018; 13:e0198121. [PMID: 29990316 PMCID: PMC6038987 DOI: 10.1371/journal.pone.0198121] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2017] [Accepted: 05/14/2018] [Indexed: 01/18/2023] Open
Abstract
Stable Schiff bases containing a furoxan moiety are synthesized as single regioisomers by the reaction of 3-methyl-2-oxy-furazan-4-carbaldehydewith various amino compounds at room temperature. The structures of synthesized compounds were fully characterized by multinuclear NMR spectroscopy and X-ray crystallography. The effect of synthesized Schiff bases containing a furoxan moiety on biological generation of reactive oxygen species and nitric oxide in plant tissues was investigated for the first time by fluorescence microscopy and the released NO identified as nitrite with Griess reagent. There is a good correlation between the biological generation of NO determined by fluorescence microscopy and with Griess reagent. Some of the synthesized compounds exhibited both nitric oxide and reactive oxygen species generation abilities and represent potential NO donors in plant tissues.
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Affiliation(s)
| | - Anca Oancea
- National Institute of Research and Development for Biological Sciences, Bucharest, Romania
| | | | - Alina Nicolescu
- “PetruPoni” Institute of Macromolecular Chemistry, Romanian Academy, Aleea Grigore Ghica Voda, Iasi, Romania
- “C. D. Nenitescu” Centre of Organic Chemistry, Romanian Academy, Bucharest, Romania
| | - Elena Iulia Oprita
- National Institute of Research and Development for Biological Sciences, Bucharest, Romania
| | | | | | - Florin Oancea
- National Research & Development Institute for Chemistry & Petrochemistry – ICECHIM, Bucharest, Romania
| | - Sergiu Shova
- “PetruPoni” Institute of Macromolecular Chemistry, Romanian Academy, Aleea Grigore Ghica Voda, Iasi, Romania
- Institute of Chemistry, Academy of Sciences, Chisinau, Republic of Moldova
| | - Calin Deleanu
- “PetruPoni” Institute of Macromolecular Chemistry, Romanian Academy, Aleea Grigore Ghica Voda, Iasi, Romania
- “C. D. Nenitescu” Centre of Organic Chemistry, Romanian Academy, Bucharest, Romania
- * E-mail:
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Oancea A, Georgescu E, Georgescu F, Nicolescu A, Oprita EI, Tudora C, Vladulescu L, Vladulescu MC, Oancea F, Deleanu C. Isoxazole derivatives as new nitric oxide elicitors in plants. Beilstein J Org Chem 2017; 13:659-664. [PMID: 28487760 PMCID: PMC5389174 DOI: 10.3762/bjoc.13.65] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2016] [Accepted: 03/16/2017] [Indexed: 11/23/2022] Open
Abstract
Several 3,5-disubstituted isoxazoles were obtained in good yields by regiospecific 1,3-dipolar cycloaddition reactions between aromatic nitrile oxides, generated in situ from the corresponding hydroxyimidoyl chlorides, with non-symmetrical activated alkynes in the presence of catalytic amounts of copper(I) iodide. Effects of 3,5-disubstituted isoxazoles on nitric oxide and reactive oxygen species generation in Arabidopsis tissues was studied using specific diaminofluoresceine dyes as fluorescence indicators.
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Affiliation(s)
- Anca Oancea
- National Institute of Research and Development for Biological Sciences, Spl. Independentei 296, RO-060031 Bucharest, Romania
| | - Emilian Georgescu
- Research Center Oltchim, Str. Uzinei 1, RO-240050, Ramnicu Valcea, Romania
| | - Florentina Georgescu
- Research Dept., Teso Spec SRL, Str. Muncii 53, RO-915200 Fundulea, Calarasi, Romania
| | - Alina Nicolescu
- Petru Poni Institute of Macromolecular Chemistry, Romanian Academy, Aleea Grigore Ghica Voda 41-A, RO-700487 Iasi, Romania
- C. D. Nenitescu Centre of Organic Chemistry, Romanian Academy, Spl. Independentei 202-B, RO-060023 Bucharest, Romania
| | - Elena Iulia Oprita
- National Institute of Research and Development for Biological Sciences, Spl. Independentei 296, RO-060031 Bucharest, Romania
| | - Catalina Tudora
- National Institute of Research and Development for Biological Sciences, Spl. Independentei 296, RO-060031 Bucharest, Romania
| | - Lucian Vladulescu
- Research Dept., Teso Spec SRL, Str. Muncii 53, RO-915200 Fundulea, Calarasi, Romania
| | | | - Florin Oancea
- National Research & Development Institute for Chemistry & Petrochemistry – ICECHIM, Spl. Independentei 202, RO-060021 Bucharest, Romania
| | - Calin Deleanu
- Petru Poni Institute of Macromolecular Chemistry, Romanian Academy, Aleea Grigore Ghica Voda 41-A, RO-700487 Iasi, Romania
- C. D. Nenitescu Centre of Organic Chemistry, Romanian Academy, Spl. Independentei 202-B, RO-060023 Bucharest, Romania
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Albota F, Caira MR, Draghici C, Dumitrascu F, Dumitrescu DE. Sydnone C-4 heteroarylation with an indolizine ring via Chichibabin indolizine synthesis. Beilstein J Org Chem 2016; 12:2503-2510. [PMID: 28144319 PMCID: PMC5238577 DOI: 10.3762/bjoc.12.245] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2016] [Accepted: 11/09/2016] [Indexed: 11/23/2022] Open
Abstract
The synthesis of sydnones heteroarylated at C-4 with an indolizine was achieved by Chichibabin (Tschitschibabin) indolizine synthesis starting from the corresponding sydnone-N-pyridinium bromides. The latter compounds were also transformed to sydnone-indolizines connected through a keto group at the C-4 position by refluxing them in 1,2-epoxybutane with an activated alkyne. The structures of the new compounds were assigned by FTIR, NMR spectroscopy and X-ray analysis.
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Affiliation(s)
- Florin Albota
- Center of Organic Chemistry ‘‘C. D. Nenitzescu’’, Roumanian Academy, Spl Independentei 202B, 060023 Bucharest, Romania
| | - Mino R Caira
- Department of Chemistry, University of Cape Town, Rondebosch 7701, South Africa
| | - Constantin Draghici
- Center of Organic Chemistry ‘‘C. D. Nenitzescu’’, Roumanian Academy, Spl Independentei 202B, 060023 Bucharest, Romania
| | - Florea Dumitrascu
- Center of Organic Chemistry ‘‘C. D. Nenitzescu’’, Roumanian Academy, Spl Independentei 202B, 060023 Bucharest, Romania
| | - Denisa E Dumitrescu
- Faculty of Pharmacy, University Ovidius, Aleea Universitatii 1, Constantza, Romania
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1,3-Dipolar cycloaddition of azinium ylides to alkynyl hetarenes: a synthetic route to indolizine and pyrrolo[2,1-a]isoquinoline based heterobiaryls. Tetrahedron 2016. [DOI: 10.1016/j.tet.2016.03.050] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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