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Dorababu A. Update of Recently (2016–2020) Designed Azepine Analogs and Related Heterocyclic Compounds with Potent Pharmacological Activities. Polycycl Aromat Compd 2022. [DOI: 10.1080/10406638.2022.2041677] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Micheletti G, Frenna V, Macaluso G, Boga C, Spinelli D. Mononuclear Rearrangement of the Z-Phenylhydrazones of Some 3-Acyl-1,2,4-oxadiazoles: Effect of Substituents on the Nucleophilic Character of the >C═N-NH-C 6 H 5 Chain and on the Charge Density of N-2 of the 1,2,4-Oxadiazole Ring (Electrophilic Counterpart). J Org Chem 2019; 84:2462-2469. [PMID: 30695638 DOI: 10.1021/acs.joc.8b02305] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The reaction rates for the mononuclear rearrangement of the Z-phenylhydrazones of 3-acyl-1,2,4-oxadiazoles 3a-c into the relevant 2-phenyl-2 H-1,2,3-triazoles (4a-c) have been measured in dioxane/water at different temperatures in a large range of proton concentrations. The occurrence of two different reaction pathways (one uncatalyzed, water assisted, and the other general base catalyzed) has- been observed. The obtained results have been able to furnish information about the effects of the nature of the 3-acyl structure and of the 5-substituents in the 1,2,4-oxadiazole ring on the reactivity of the examined rearrangements: they are well in line with the previsions carried out considering some our previous computational results as well as experimental kinetic ones.
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Affiliation(s)
- Gabriele Micheletti
- Department of Industrial Chemistry "Toso Montanari" ALMA MATER STUDIORUM , Università di Bologna , Viale del Risorgimento 4 , 40136 Bologna , Italy
| | - Vincenzo Frenna
- Department STEMBIO , Università di Palermo , Viale delle Scienze-Parco d'Orleans II , 90128 Palermo , Italy
| | - Gabriella Macaluso
- Department STEMBIO , Università di Palermo , Viale delle Scienze-Parco d'Orleans II , 90128 Palermo , Italy
| | - Carla Boga
- Department of Industrial Chemistry "Toso Montanari" ALMA MATER STUDIORUM , Università di Bologna , Viale del Risorgimento 4 , 40136 Bologna , Italy
| | - Domenico Spinelli
- Department of Chemistry 'G. Ciamician' ALMA MATER STUDIORUM , Università di Bologna , Via Selmi 2 , 40126 Bologna , Italy
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Monte ZS, Silva AM, Lima GMS, Silva TGDA, Marques KMR, Rodrigues MD, Falcão EPS, Melo SJ. Synthesis and evaluation of arylamidine derivatives for new antimicrobial and cytotoxic activities. AN ACAD BRAS CIENC 2017. [PMID: 28640352 DOI: 10.1590/0001-3765201720160801] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
A series of arylamidines 3a-j was designed, synthesized and investigated for antimicrobial activity. Structures of the compounds were confirmed by IR, 1H-NMR and 13C-NMR and a 2D spectroscopic study was performed. A preliminary screening of the antimicrobial tests clearly showed that three out of ten arylamidines, viz, 3f, 3g and 3i, were effective against all the gram-negative bacteria: Klebsiella pneumoniae, Pseudomonas aeruginosa and Salmonella enteric; and against the yeast, candida albicans. Further, the Minimum Inhibitory Concentrations (MIC) against the bacteria and yeast were determined. All compounds 3a-d, 3f, 3g, 3i and 3j were also investigated for their low cytotoxic effects on tested cell lines. Compounds 3d and 3f were the most effective derivatives against HL-60 and HEp-2 cells, respectively, with IC50 value (2µg/mL), and low normal cells toxicity.
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Affiliation(s)
- Zenaide S Monte
- Programa de Pós-Graduação em Ciências Farmacêuticas, Departamento de Ciências Farmacêuticas, Universidade Federal de Pernambuco/UFPE, Av. Prof. Moraes Rego, 1235, Cidade Universitária, 50740-560 Recife, PE, Brazil
| | - Amanda M Silva
- Departamento de Biomedicina, Universidade Federal de Pernambuco/UFPE, Av. Prof. Moraes Rego, 1235, Cidade Universitária, 50740-560 Recife, PE, Brazil
| | - Gláucia M S Lima
- Departamento de Antibióticos, Universidade Federal de Pernambuco/UFPE, Av. Prof. Moraes Rego, 1235, Cidade Universitária, 50740-560 Recife, PE, Brazil
| | - Teresinha G DA Silva
- Departamento de Antibióticos, Universidade Federal de Pernambuco/UFPE, Av. Prof. Moraes Rego, 1235, Cidade Universitária, 50740-560 Recife, PE, Brazil
| | - Karla M R Marques
- Departamento de Antibióticos, Universidade Federal de Pernambuco/UFPE, Av. Prof. Moraes Rego, 1235, Cidade Universitária, 50740-560 Recife, PE, Brazil
| | - Maria D Rodrigues
- Departamento de Antibióticos, Universidade Federal de Pernambuco/UFPE, Av. Prof. Moraes Rego, 1235, Cidade Universitária, 50740-560 Recife, PE, Brazil
| | - Emerson P S Falcão
- Departamento de Nutrição, Núcleo de Nutrição da Universidade Federal de Pernambuco (CAV - UFPE), Rua Alto do Reservatório, Bela Vista, s/n, 55608-680 Cidade Vitoria de Santo Antão, PE, Brazil
| | - Sebastião J Melo
- Programa de Pós-Graduação em Ciências Farmacêuticas, Departamento de Ciências Farmacêuticas, Universidade Federal de Pernambuco/UFPE, Av. Prof. Moraes Rego, 1235, Cidade Universitária, 50740-560 Recife, PE, Brazil
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