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Truong Nguyen H, Duong TH, Dang MK, Pham MDT, Pham NKT, Tri Mai D, Son Dang V, Nguyen NH, Sichaem J. Two New Benzoquinone Derivatives from Vietnamese Knema globularia Stems. Chem Biodivers 2024; 21:e202400380. [PMID: 38498616 DOI: 10.1002/cbdv.202400380] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2024] [Revised: 03/16/2024] [Accepted: 03/18/2024] [Indexed: 03/20/2024]
Abstract
The chemical investigation of the stems of Knema globularia led to the isolation of two new benzoquinones derivatives, embenones A and B (1 and 2), along with three known compounds (3-5). The structures of the isolated compounds were determined using spectroscopic techniques, including HRESIMS, 1D and 2D NMR, in conjunction with comparison to existing literature data. Compounds 1 and 2 represent new carbon skeletons in nature. Furthermore, all isolated compounds were evaluated for their α-glucosidase inhibitory activity, with compounds 1-3 exhibiting superior potency relative to the positive control (acarbose, IC50 331 μM). Their IC50 values ranged from 1.40 to 96.1 μM.
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Affiliation(s)
- Huy Truong Nguyen
- Faculty of Pharmacy, Ton Duc Thang University, Ho Chi Minh City, 700000, Vietnam
| | - Thuc-Huy Duong
- Department of Chemistry, Ho Chi Minh City University of Education, 280 An Duong Vuong Street, District 5, Ho Chi Minh City, 748342, Vietnam
| | - Minh-Khai Dang
- Department of Chemistry, Ho Chi Minh City University of Education, 280 An Duong Vuong Street, District 5, Ho Chi Minh City, 748342, Vietnam
| | - Mai-Dang-Truong Pham
- Department of Chemistry, Ho Chi Minh City University of Education, 280 An Duong Vuong Street, District 5, Ho Chi Minh City, 748342, Vietnam
| | - Nguyen-Kim-Tuyen Pham
- Faculty of Environment, Sai Gon University, 273 An Duong Vuong, Ward 3, District 5, Ho Chi Minh City, 70000, Vietnam
| | - Dinh Tri Mai
- Graduate University of Science and Technology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi, 11300, Vietnam
- Institute of Chemical Technology, Vietnam Academy of Science and Technology, 1 A TL29 Street, Thanh Loc ward, District 12, Ho Chi Minh City, 700000, Vietnam
| | - Van Son Dang
- Graduate University of Science and Technology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi, 11300, Vietnam
- Institute of Tropical Biology, Vietnam Academy of Science and Technology, 85 Tran Quoc Toan Street, District 3, Ho Chi Minh City, 700000, Vietnam
| | - Ngoc-Hong Nguyen
- CirTech Institute, HUTECH University, 475 A Dien Bien Phu Street, Binh Thanh District, Ho Chi Minh City, 70000, Vietnam
| | - Jirapast Sichaem
- Research Unit in Natural Products Chemistry and Bioactivities, Faculty of Science and Technology, Thammasat University Lampang Campus, Lampang, 52190, Thailand
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Sugiura S, Maeda H. Pyrrole-bridged quinones: π-electronic systems that modulate electronic structures by tautomerism and deprotonation. Chem Commun (Camb) 2021; 57:6983-6986. [PMID: 34160483 DOI: 10.1039/d1cc02691g] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
A new series of π-extended quinone derivatives containing a pyrrole bridge exhibited NH/OH-type tautomerization and anion binding along with deprotonation that induced near-infrared absorption and ion-pairing assemblies.
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Affiliation(s)
- Shinya Sugiura
- Department of Applied Chemistry, College of Life Sciences, Ritsumeikan University, Kusatsu 525-8577, Japan.
| | - Hiromitsu Maeda
- Department of Applied Chemistry, College of Life Sciences, Ritsumeikan University, Kusatsu 525-8577, Japan.
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3
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Abstract
Pyrano- and dipyranocoumarins are classes of naturally occurring organic compounds with very interesting biological activities. This review focuses on the synthetic strategies for the synthesis of pyranocoumarins and dipyranocoumarins and the biological properties of those compounds. The synthesis involves the formation of the pyran ring, at first, from a coumarin or the formation of pyranone moiety from an existing pyran. Pyranocoumarins and dipyranocoumarins present anti-HIV, anti-cancer, neuroprotective, antidiabetic, antibacterial, antifungal, anti-inflammatory activities. Especially khellactones and calanolides are usually potent and selective in anti-HIV activity. Decursin and decursinol derivatives are effective as anticancer, neuroprotective, antidiabetic, antibacterial, and antifungal agents.
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Affiliation(s)
- Evangelia-Eirini N. Vlachou
- Laboratory of Organic Chemistry, Department of Chemistry, Aristotle University of Thessaloniki, Thessaloniki 54124, Greece
| | - Konstantinos E. Litinas
- Laboratory of Organic Chemistry, Department of Chemistry, Aristotle University of Thessaloniki, Thessaloniki 54124, Greece
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Vlachou EN, Gabriel C, Litinas KE. One‐pot Synthesis of Fused Dipyranocoumarins from Dihydroxycoumarins and Propargyl Chlorides under Microwave Irradiation. J Heterocycl Chem 2018. [DOI: 10.1002/jhet.3376] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Evangelia‐Eirini N. Vlachou
- Laboratory of Organic Chemistry, Department of ChemistryAristotle University of Thessaloniki Thessaloniki 54124 Greece
| | - Catherine Gabriel
- Center for Research of the Structure of Matter, Magnetic Resonance Laboratory, Department of Chemical EngineeringAristotle University of Thessaloniki, University Campus Thessaloniki 54124 Greece
| | - Konstantinos E. Litinas
- Laboratory of Organic Chemistry, Department of ChemistryAristotle University of Thessaloniki Thessaloniki 54124 Greece
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Schmidt B, Schultze C. A One-Pot Synthesis of Pyranocoumarins Through Microwave-Promoted Propargyl Claisen Rearrangement/Wittig Olefination. European J Org Chem 2018. [DOI: 10.1002/ejoc.201701684] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Bernd Schmidt
- Institut für Chemie; Universität Potsdam; Karl-Liebknecht-Strasse 24-25 14476 Potsdam-Golm Germany
| | - Christiane Schultze
- Institut für Chemie; Universität Potsdam; Karl-Liebknecht-Strasse 24-25 14476 Potsdam-Golm Germany
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