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Khadem S, Marles RJ. Natural 3,4-Dihydro-2(1 H)-quinolinones - part III: biological activities. Nat Prod Res 2024:1-8. [PMID: 38795182 DOI: 10.1080/14786419.2024.2357663] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2024] [Accepted: 05/14/2024] [Indexed: 05/27/2024]
Abstract
Natural products have played a crucial role in drug discovery, but their development is hindered by challenges such as inadequate availability and complex synthesis methods. However, both natural and synthetic compounds that have the core structure of 3,4-dihydro-2(1H)-quinolinone, also known as 2-oxo-1,2,3,4-tetrahydroquinoline (2O-THQ), display a diverse array of effects in both central and peripheral tissues, with some showing therapeutic potential in treating various disorders. Despite the significance of this family of compounds, the current literature lacks comprehensive coverage of their biological functions. This article aims to address this gap by extensively reviewing the biological activities of 2O-THQ alkaloids from diverse organisms and exploring their potential to serve as a source of innovative bioactive natural products.
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Affiliation(s)
- Shahriar Khadem
- Safe Environments Directorate, Healthy Environments and Consumer Safety Branch, Health Canada, Ottawa, Canada
| | - Robin J Marles
- Retired Senior Scientific Advisor, Health Canada, Ottawa, Canada
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Khadem S, Marles RJ. Natural 3,4-dihydro-2(1 h)-quinolinones- Part II: animal, bacterial, and fungal sources. Nat Prod Res 2024:1-14. [PMID: 38564663 DOI: 10.1080/14786419.2024.2324377] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2023] [Accepted: 02/23/2024] [Indexed: 04/04/2024]
Abstract
While natural products have undoubtedly played a pivotal role in drug discovery, their potential as lead compounds has been hindered by challenges such as limited accessibility and complex synthesis processes. At the core of numerous natural and synthetic compounds, each exhibiting remarkable biological traits, lies the foundational structure of 3,4-dihydro-2(1H)-quinolinone, also recognised as 2-oxo-tetrahydroquinoline (2 O-THQ). This article extensively examines the occurrence of 2 O-THQ alkaloids across diverse organisms including animals, fungi, and bacteria, exploring their capacity to serve as a source for innovative bioactive natural products. Despite the undeniable significance of these compounds, the existing body of review literature has yet to provide comprehensive coverage, underscoring the pivotal contribution of this present article in investigating their prevalence in nature.
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Affiliation(s)
- Shahriar Khadem
- Safe Environments Directorate, Healthy Environments and Consumer Safety Branch, Ottawa, Health Canada, Canada
| | - Robin J Marles
- Retired Senior Scientific Advisor, Ottawa, Health Canada, Canada
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Khazaal HT, Khazaal MT, Abdel-Razek AS, Hamed AA, Ebrahim HY, Ibrahim RR, Bishr M, Mansour YE, El Dib RA, Soliman HSM. Antimicrobial, antiproliferative activities and molecular docking of metabolites from Alternaria alternata. AMB Express 2023; 13:68. [PMID: 37414961 DOI: 10.1186/s13568-023-01568-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2023] [Accepted: 06/02/2023] [Indexed: 07/08/2023] Open
Abstract
Endophytic fungi allied to plants have sparked substantial promise in discovering new bioactive compounds. In this study, propagation of the endophytic fungus Alternaria alternata HE11 obtained from Colocasia esculanta leaves led to the isolation of Ergosterol (1), β-Sitosterol (2), Ergosterol peroxide (3), in addition to three dimeric naphtho-γ-pyrones, namely Fonsecinone A (4), Asperpyrone C (5), and Asperpyrone B (6), which were isolated from genus Alternaria for the first time. Structures of the isolated compounds were established on the basis of extensive 1D and 2D NMR and, MS measurements. The ethyl acetate extract, as well as compounds 1, 3, 4 and 6 were evaluated for their antimicrobial activity using agar well-diffusion and broth microdilution assays. Molecular docking study was carried out to explore the pharmacophoric moieties that governed the binding orientation of antibacterial active compounds to multidrug efflux transporter AcrB and the ATP binding site to E. coli DNA gyrase using MOE software. Results revealed that the most active antibacterial compounds 4 and 6 bind with high affinity in the phenylalanine-rich cage and are surrounded with other hydrophobic residues. The antiproliferative activity of all isolated compounds was in vitro evaluated using the human prostatic adenocarcinoma cell lines DU-145, PC-3, PC-3 M, 22Rv1 and CWR-R1ca adopting MTT assay. Compound 4 was the most active against almost all tested cell lines, with IC50 values 28.6, 21.6, 17.1 and 13.3 against PC-3, PC-3 M, 22Rv1 and CWR-R1ca cell lines, respectively.
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Affiliation(s)
- Heba T Khazaal
- Department of Pharmacognosy, Faculty of Pharmacy, Helwan University, Ain-Helwan, Cairo, 11795, Egypt
| | - Mohamed T Khazaal
- Botany and Microbiology Department, Faculty of Science, Helwan University, Cairo, 11795, Egypt
| | - Ahmed S Abdel-Razek
- Microbial Chemistry Department, National Research Center, 33 El-Buhouth Street, Giza, 12622, Egypt
| | - Ahmed A Hamed
- Microbial Chemistry Department, National Research Center, 33 El-Buhouth Street, Giza, 12622, Egypt
| | - Hassan Y Ebrahim
- Department of Pharmacognosy, Faculty of Pharmacy, Helwan University, Ain-Helwan, Cairo, 11795, Egypt
| | - Reham R Ibrahim
- Department of Pharmacognosy, Faculty of Pharmacy, Helwan University, Ain-Helwan, Cairo, 11795, Egypt
| | - Mokhtar Bishr
- Plant General Manager and Technical Director of the Arab Company for Pharmaceuticals and Medicinal, Plants, Cairo, Egypt
| | - Yara E Mansour
- Pharmaceutical Organic Chemistry Department, Faculty of Pharmacy, Helwan University, Ain-Helwan, Cairo, 11795, Egypt
| | - Rabab A El Dib
- Department of Pharmacognosy, Faculty of Pharmacy, Helwan University, Ain-Helwan, Cairo, 11795, Egypt
| | - Hesham S M Soliman
- Department of Pharmacognosy, Faculty of Pharmacy, Helwan University, Ain-Helwan, Cairo, 11795, Egypt.
- PharmD program, Egypt-Japan University of Science and Technology (E-JUST), New Borg El-Arab City, Alexandria, 21934, Egypt.
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4
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Xie D, Zhang S. Selective Reduction of Quinolinones Promoted by a SmI 2/H 2O/MeOH System. J Org Chem 2022; 87:8757-8763. [PMID: 35698844 DOI: 10.1021/acs.joc.2c00389] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The selective reduction of quinolin-2(1H)-ones promoted by a SmI2/H2O/MeOH system is reported for the first time. The reaction is effectively carried out to afford 3,4-dihydroquinoline-2(1H)-ones under mild conditions in a one-pot fashion with good to excellent yields.
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Affiliation(s)
- Dengbing Xie
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Dushu Lake Campus, Suzhou 215123, People's Republic of China
| | - Songlin Zhang
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Dushu Lake Campus, Suzhou 215123, People's Republic of China
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Zhang B. Quinolone derivatives and their antifungal activities: An overview. Arch Pharm (Weinheim) 2019; 352:e1800382. [PMID: 31021468 DOI: 10.1002/ardp.201800382] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2018] [Revised: 01/29/2019] [Accepted: 02/03/2019] [Indexed: 11/06/2022]
Abstract
More than 300 million people suffer from the incidence of life-threatening invasive fungal infections, resulting in over 1.35 million deaths annually. Currently, the antifungal agents available in clinics are rather limited, and the rapid development of resistance to the existing antifungal drugs has further aggravated mortality. Quinolones possess a broad spectrum of chemotherapeutic properties and demonstrate considerable antifungal activities as well. Various quinolone derivatives have been screened for their antifungal activities, and some of them exhibit excellent potency against both drug-susceptible and drug-resistant fungi. This review aims to outline the recent advances in quinolone derivatives as potential antifungal agents and summarize the structure-activity relationship, to provide insights for the rational design of more active candidates.
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Affiliation(s)
- Bo Zhang
- School of Chemistry and Life Science, Anshan Normal University, Anshan, Liaoning, P.R. China
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Kamel RA, Abdel-Razek AS, Hamed A, Ibrahim RR, Stammler HG, Frese M, Sewald N, Shaaban M. Isoshamixanthone: a new pyrano xanthone from endophytic Aspergillus sp. ASCLA and absolute configuration of epiisoshamixanthone. Nat Prod Res 2019; 34:1080-1090. [PMID: 30663363 DOI: 10.1080/14786419.2018.1548458] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
Isoshamixanthone (1), a new stereoisomeric pyrano xanthone together with the previously known fungal metabolites, epiisoshamixanthone (2), sterigmatocystin (3), arugosin C (4), norlichexanthone (5), diorcinol (6), ergosterol and methyllinoleate, were obtained from the endophytic fungal strain Aspergillus sp. ASCLA isolated from leaf tissues of the medicinal plant Callistemon subulatus. The chemical structure of the new xanthone (1) was elucidated by extensive 1D, 2D NMR, and ESI HR mass measurements, and by comparison with literature data. The constitutions and absolute configurations of 1 and epiisoshamixanthone (2) were additionally confirmed by X-ray crystallography. Compounds 1,2 were evaluated for their potential anticancer activity using the human cervix carcinoma cell line (KB-3-1). The antimicrobial activities of the fungal extract and compounds 1,2 were studied using a panel of pathogenic microorganisms as well.
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Affiliation(s)
- Reem A Kamel
- Organic and Bioorganic Chemistry, Faculty of Chemistry, Bielefeld University, Bielefeld, Germany.,Pharmacognosy Department, Faculty of Pharmacy, Helwan University, Helwan, Cairo, Egypt
| | - Ahmed S Abdel-Razek
- Organic and Bioorganic Chemistry, Faculty of Chemistry, Bielefeld University, Bielefeld, Germany.,Microbial Chemistry Department, Genetic Engineering and Biotechnology Research Division, National Research Centre, Dokki-Giza, Egypt
| | - Abdelaaty Hamed
- Organic and Bioorganic Chemistry, Faculty of Chemistry, Bielefeld University, Bielefeld, Germany.,Chemistry Department, Faculty of Science, Al-Azhar University, Nasr City-Cairo, Egypt
| | - Reham R Ibrahim
- Pharmacognosy Department, Faculty of Pharmacy, Helwan University, Helwan, Cairo, Egypt
| | - Hans Georg Stammler
- Inorganic and Structural Chemistry, Bielefeld University, Department of Chemistry, Bielefeld, Germany
| | - Marcel Frese
- Organic and Bioorganic Chemistry, Faculty of Chemistry, Bielefeld University, Bielefeld, Germany
| | - Norbert Sewald
- Organic and Bioorganic Chemistry, Faculty of Chemistry, Bielefeld University, Bielefeld, Germany
| | - Mohamed Shaaban
- Organic and Bioorganic Chemistry, Faculty of Chemistry, Bielefeld University, Bielefeld, Germany.,Chemistry of Natural Compounds Department, Division of Pharmaceutical Industries, National Research Centre, Dokki-Giza, Egypt
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