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Martín-Acosta P, Cuadrado I, González-Cofrade L, Pestano R, Hortelano S, de las Heras B, Estévez-Braun A. Synthesis of Quinoline and Dihydroquinoline Embelin Derivatives as Cardioprotective Agents. JOURNAL OF NATURAL PRODUCTS 2023; 86:317-329. [PMID: 36749898 PMCID: PMC9972480 DOI: 10.1021/acs.jnatprod.2c00924] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/14/2022] [Indexed: 06/18/2023]
Abstract
A set of new dihydroquinoline embelin derivatives was obtained from the reaction of the natural benzoquinone embelin (1) with anilines and aromatic aldehydes in the presence of AgOTf. The synthesis of these compounds involves the formation of a Knoevenagel adduct, followed by nucleophilic addition of aniline and subsequent electrocyclic ring closure. The scope of the reaction regarding the aldehydes and anilines was determined. Quinoline derivatives were also obtained from the corresponding dihydroquinolines under oxidation with DDQ. The cardioprotective activity of the synthesized compounds was screened using a doxorubicin-induced cardiotoxicity model in H9c2 cardiomyocytes. Some structure-activity relationships were outlined, and the best activities were achieved with quinoline-embelin derivatives having a 4-nitrophenyl group attached at the pyridine ring. The obtained results indicated that embelin derivatives 4i, 6a, 6d, 6k, and 6m could have potential as cardioprotective agents, as they attenuated a DOX-induced cardiotoxicity effect acting on oxidative stress and apoptosis.
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Affiliation(s)
- Pedro Martín-Acosta
- Instituto
Universitario de Bio-Orgánica Antonio González, Departamento
de Química Orgánica, Universidad
de La Laguna, Avenida Astrofísico Francisco Sánchez N° 2, 38206, La Laguna, Tenerife, Spain
| | - Irene Cuadrado
- Departamento
de Farmacología, Farmacognosia y Botánica, Facultad
de Farmacia, Universidad Complutense de
Madrid (UCM), Plaza Ramón y Cajal s/n, 28040, Madrid, Spain
| | - Laura González-Cofrade
- Departamento
de Farmacología, Farmacognosia y Botánica, Facultad
de Farmacia, Universidad Complutense de
Madrid (UCM), Plaza Ramón y Cajal s/n, 28040, Madrid, Spain
| | - Roberto Pestano
- Instituto
Universitario de Bio-Orgánica Antonio González, Departamento
de Química Orgánica, Universidad
de La Laguna, Avenida Astrofísico Francisco Sánchez N° 2, 38206, La Laguna, Tenerife, Spain
| | - Sonsoles Hortelano
- Unidad
de Terapias Farmacológicas, Área de Genética
Humana, Instituto de Investigación
de Enfermedades Raras (IIER), Instituto de Salud Carlos III, Carretera de Majadahonda-Pozuelo
Km 2, 28220, Madrid, Spain
| | - Beatriz de las Heras
- Departamento
de Farmacología, Farmacognosia y Botánica, Facultad
de Farmacia, Universidad Complutense de
Madrid (UCM), Plaza Ramón y Cajal s/n, 28040, Madrid, Spain
| | - Ana Estévez-Braun
- Instituto
Universitario de Bio-Orgánica Antonio González, Departamento
de Química Orgánica, Universidad
de La Laguna, Avenida Astrofísico Francisco Sánchez N° 2, 38206, La Laguna, Tenerife, Spain
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Shainyan BA, Zhilitskaya LV, Yarosh NO. Synthetic Approaches to Biologically Active C-2-Substituted Benzothiazoles. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27082598. [PMID: 35458794 PMCID: PMC9027766 DOI: 10.3390/molecules27082598] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/14/2022] [Revised: 04/01/2022] [Accepted: 04/12/2022] [Indexed: 12/15/2022]
Abstract
Numerous benzothiazole derivatives are used in organic synthesis, in various industrial and consumer products, and in drugs, with a wide spectrum of biological activity. As the properties of the benzothiazole moiety are strongly affected by the nature and position of substitutions, in this review, covering the literature from 2016, we focus on C-2-substituted benzothiazoles, including the methods of their synthesis, structural modification, reaction mechanisms, and possible pharmacological activity. The synthetic approaches to these heterocycles include both traditional multistep reactions and one-pot atom economy processes using green chemistry principles and easily available reagents. Special attention is paid to the methods of the thiazole ring closure and chemical modification by the introduction of pharmacophore groups.
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Jayashree S, Shivashankar K. Montmorillonite K-10 catalyzed Mannich reaction: Synthesis of aminonaphthoquinone derivatives from Lawsone. SYNTHETIC COMMUN 2018. [DOI: 10.1080/00397911.2018.1466334] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
| | - Kalegowda Shivashankar
- P.G. Department of Chemistry, Central College Campus, Bangalore University, Bangalore, Karnataka, India
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Rimaz M, Khalafy J, Mousavi H, Bohlooli S, Khalili B. Two Different Green Catalytic Systems for One-Pot Regioselective and Chemoselective Synthesis of Some Pyrimido[4,5-d]Pyrimidinone Derivatives in Water. J Heterocycl Chem 2017. [DOI: 10.1002/jhet.2932] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Mehdi Rimaz
- Department of Chemistry; Payame Noor University; PO Box 19395-3697 Tehran Iran
| | - Jabbar Khalafy
- Department of Organic Chemistry, Faculty of Chemistry; Urmia University; Urmia Iran
| | - Hossein Mousavi
- Department of Chemistry; Payame Noor University; PO Box 19395-3697 Tehran Iran
| | - Sanaz Bohlooli
- Department of Chemistry; Payame Noor University; PO Box 19395-3697 Tehran Iran
| | - Behzad Khalili
- Department of Chemistry, Faculty of Sciences; University of Guilan; PO Box 41335-1914 Rasht Iran
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