1
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Dong PSN, Phan HVT, Sichaem J, Nguyen-Si HV, Tran TN, Hoang LTTT, Huynh TMS, Le HTT, Mai DT, Ngo TL, Le TD, Nguyen VK. Tinctorin, a new spiroterpenoid from the lichen Parmotrema tinctorum (Despr. ex Nyl.) Hale growing in Vietnam. Nat Prod Res 2024; 38:2869-2876. [PMID: 37574817 DOI: 10.1080/14786419.2023.2245958] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2023] [Revised: 07/19/2023] [Accepted: 08/01/2023] [Indexed: 08/15/2023]
Abstract
A new spiroterpenoid, namely tinctorin (1), along with one known compound, norreticulatin (2), were isolated from the lichen Parmotrema tinctorum (Despr. ex Nyl.) Hale. Their structures were elucidated by extensive spectroscopic analyses and electronic circular dichroism (ECD) calculations. The absolute configuration of 2 was established for the first time. Compound 1 was evaluated for its inhibitory activity against α-glucosidase and found to be inactive.
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Affiliation(s)
- Phan-Si-Nguyen Dong
- Institute of Research and Development, Duy Tan University, Da Nang, Vietnam
- School of Computer Science, Duy Tan University, Da Nang, Vietnam
| | - Hoang-Vinh-Truong Phan
- Institute of Fundamental and Applied Sciences, Duy Tan University, Ho Chi Minh City, Vietnam
- Faculty of Natural Sciences, Duy Tan University, Da Nang, Vietnam
| | - Jirapast Sichaem
- Research Unit in Natural Products Chemistry and Bioactivities, Faculty of Science and Technology, Thammasat University Lampang Campus, Lampang, Thailand
| | - Hoai-Vu Nguyen-Si
- Institute of Fundamental and Applied Sciences, Duy Tan University, Ho Chi Minh City, Vietnam
- Faculty of Natural Sciences, Duy Tan University, Da Nang, Vietnam
| | - Thanh-Nha Tran
- Department of Environmental Engineering, Thu Dau Mot University, Binh Duong, Vietnam
| | | | - Thi-Minh-Suong Huynh
- University of Natural Resources and Environment Ho Chi Minh City, Ho Chi Minh City, Vietnam
| | - Huong Thi Thu Le
- Department of Chemistry, Ho Chi Minh City University of Education, Ho Chi Minh City, Vietnam
| | - Dinh-Tri Mai
- Graduate University of Science and Technology, Vietnam Academy of Science and Technology, Ha Noi, Vietnam
- Institute of Chemical Technology, Vietnam Academy of Science and Technology, Ho Chi Minh City, Vietnam
| | - Tung-Lam Ngo
- Chu Van An High School Specialist, Lang Son City, Vietnam
| | - Tien-Dung Le
- Institute of Applied Materials Science, Vietnam Academy of Science and Technology, Ho Chi Minh City, Vietnam
| | - Van-Kieu Nguyen
- Institute of Fundamental and Applied Sciences, Duy Tan University, Ho Chi Minh City, Vietnam
- Faculty of Natural Sciences, Duy Tan University, Da Nang, Vietnam
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2
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Khanh Van NN, Aree T, Quynh Trang NT, Ngoc Thao NT, Tri NH, Duong TH, Nguyen NH, Kim Tuyen PN. A New 3-Benzylphthalide from the Moss Erythrodontium julaceum. Chem Biodivers 2023; 20:e202301013. [PMID: 37749933 DOI: 10.1002/cbdv.202301013] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2023] [Revised: 09/24/2023] [Accepted: 09/25/2023] [Indexed: 09/27/2023]
Abstract
From the moss Erythrodontium julaceum Paris growing in Vietnam, julacelide (1), a new 3-benzylphthalide, along with methyl orsellinate (2), ethyl orsellinate (3), 4-O-methylhaematommic acid (4), and zeorin (5), were isolated and structurally elucidated. Their chemical structures were elucidated through extensive 1D and 2D NMR analysis and high-resolution mass spectroscopy as well as through comparisons to the existing literature. Compound 4-O-methylhaematommic acid was a new natural product. The absolute configuration of julacelide was defined using time-dependent density functional theory (TDDFT) calculations. Julacelide was evaluated for α-glucosidase inhibition.
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Affiliation(s)
- Nguyen Ngoc Khanh Van
- Faculty of Natural Sciences Pedagogy, Sai Gon University, 273 An Duong Vuong, Ward 3, District 5, Ho Chi Minh City, 70000, Vietnam
| | - Thammarat Aree
- Department of Chemistry, Faculty of Science, Chulalongkorn University, Pathumwan, Bangkok, 10330, Thailand
| | - Nguyen Thi Quynh Trang
- Faculty of Environment, Sai Gon University, 273 An Duong Vuong, Ward 3, District 5, Ho Chi Minh City, 70000, Vietnam
| | - Nguyen Thi Ngoc Thao
- Faculty of Environment, Sai Gon University, 273 An Duong Vuong, Ward 3, District 5, Ho Chi Minh City, 70000, Vietnam
| | - Nguyen Huu Tri
- Faculty of Natural Sciences Pedagogy, Sai Gon University, 273 An Duong Vuong, Ward 3, District 5, Ho Chi Minh City, 70000, 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
| | - Ngoc-Hong Nguyen
- CirTech Institute, HUTECH University, 475 A Dien Bien Phu Street, Binh Thanh District, Ho Chi Minh City, Vietnam
| | - Pham Nguyen Kim Tuyen
- Faculty of Environment, Sai Gon University, 273 An Duong Vuong, Ward 3, District 5, Ho Chi Minh City, 70000, Vietnam
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3
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Do TH, Duong TH, Nguyen Minh An T, Vo TPG, Do VM, Nguyen NH, Sichaem J. Two New α-Glucosidase Inhibitory Depsidones from the Lichen Parmotrema cristiferum (Taylor) Hale. Chem Biodivers 2023; 20:e202201213. [PMID: 36775801 DOI: 10.1002/cbdv.202201213] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2022] [Revised: 01/17/2023] [Accepted: 02/10/2023] [Indexed: 02/14/2023]
Abstract
A bioactivity-guided investigation of the lichen Parmotrema cristiferum (Taylor) Hale (Parmeliaceae) led to the isolation of two new depsidones, cristifones A and B (1 and 2). The structures of the isolated compounds were identified by spectroscopic methods and comparison with the literature data. Compound 1 showed the initial combined structures of depsidone and depside cores. The two isolated compounds were then evaluated for α-glucosidase inhibition. Compounds 1 and 2 were confirmed as potent, with IC50 values of 21.5 and 18.4 μM, respectively. Compound 2 was a non-competitive inhibitor against α-glucosidase, as indicated by the intersect in the second quadrant of each respective plot.
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Affiliation(s)
- Thanh-Hung Do
- NTT Hi-Tech Institute, Nguyen Tat Thanh University, Ho Chi Minh City, 754000, 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, 700000, Vietnam
| | - Tran Nguyen Minh An
- Faculty of Chemical Engineering, Industrial University of Ho Chi Minh City, Ho Chi Minh City, 727000, Vietnam
| | - Thi-Phi-Giao Vo
- Faculty of Biology, University of Science, Vietnam National University Ho Chi Minh City, Ho Chi Minh City, 700000, Vietnam
| | - Van-Mai Do
- Nam Can Tho University, Nam Can Tho University, , Can Tho City, 900000, Vietnam
| | - Ngoc-Hong Nguyen
- CirTech Institute, HUTECH University, 475 A Dien Bien Phu Street, Binh Thanh District, Ho Chi Minh City, 717000, 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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4
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Secondary Metabolites of the Lichen Parmotrema cristiferum. Chem Nat Compd 2022. [DOI: 10.1007/s10600-022-03817-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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5
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Do TH, Duong TH, Nguyen HT, Nguyen TH, Sichaem J, Nguyen CH, Nguyen HH, Long NP. Biological Activities of Lichen-Derived Monoaromatic Compounds. Molecules 2022; 27:molecules27092871. [PMID: 35566220 PMCID: PMC9105517 DOI: 10.3390/molecules27092871] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2022] [Revised: 04/26/2022] [Accepted: 04/28/2022] [Indexed: 02/05/2023] Open
Abstract
Lichen-derived monoaromatic compounds are bioactive compounds, associated with various pharmacological properties: antioxidant, antifungal, antiviral, cytotoxicity, and enzyme inhibition. However, little is known about data regarding alpha-glucosidase inhibition and antimicrobial activity. Very few compounds were reported to have these activities. In this paper, a series of monoaromatic compounds from a lichen source were isolated and structurally elucidated. They are 3,5-dihydroxybenzoic acid (1), 3,5-dihydroxybenzoate methyl (2), 3,5-dihydroxy-4-methylbenzoic acid (3), 3,5-dihydroxy-4-methoxylbenzoic acid (4), 3-hydroxyorcinol (5), atranol (6), and methyl hematommate (7). To obtain more derivatives, available compounds from the previous reports such as methyl β-orsellinate (8), methyl orsellinate (9), and D-montagnetol (10) were selected for bromination. Electrophilic bromination was applied to 8–10 using NaBr/H2O2 reagents to yield products methyl 5-bromo-β-orsellinate (8a), methyl 3,5-dibromo-orsellinate (9a), 3-bromo-D-montagnetol (10a), and 3,5-dibromo-D-montagnetol (10b). Compounds were evaluated for alpha-glucosidase inhibition and antimicrobial activity against antibiotic-resistant, pathogenic bacteria Enterococcus faecium, Staphylococcus aureus, and Acinetobacter baumannii. Compound 4 showed stronger alpha-glucosidase inhibition than others with an IC50 value of 24.0 µg/mL. Synthetic compound 9a exhibited remarkable activity against Staphylococcus aureus with a MIC value of 4 µg/mL. Molecular docking studies were performed to confirm the consistency between in vitro and in silico studies.
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Affiliation(s)
- Thanh-Hung Do
- NTT Hi-Tech Institute, Nguyen Tat Thanh University, Ho Chi Minh City 700000, Vietnam;
| | - Thuc-Huy Duong
- Department of Chemistry, University of Education, 280 An Duong Vuong Street, District 5, Ho Chi Minh City 700000, Vietnam;
- Correspondence: (T.-H.D.); (N.P.L.); Tel.: +84-91-901-1884 (T.-H.D.); +82-51-890-5907 (N.P.L.)
| | - Huy Truong Nguyen
- Application in Pharmaceutical Sciences Research Group, Faculty of Pharmacy, Ton Duc Thang University, Ho Chi Minh City 700000, Vietnam;
| | - Thi-Hien Nguyen
- Department of Chemistry, University of Education, 280 An Duong Vuong Street, District 5, Ho Chi Minh City 700000, Vietnam;
| | - Jirapast Sichaem
- Research Unit in Natural Products Chemistry and Bioactivities, Faculty of Science and Technology, Thammasat University Lampang Campus, Lampang 52190, Thailand;
| | - Chuong Hoang Nguyen
- University of Science, Vietnam National University Ho Chi Minh City, Ho Chi Minh City 700000, Vietnam;
| | - Huu-Hung Nguyen
- Faculty of Applied Technology, School of Engineering and Technology, Van Lang University, Ho Chi Minh City 700000, Vietnam;
| | - Nguyen Phuoc Long
- Department of Pharmacology and PharmacoGenomics Research Center, Inje University College of Medicine, Busan 614-735, Korea
- Correspondence: (T.-H.D.); (N.P.L.); Tel.: +84-91-901-1884 (T.-H.D.); +82-51-890-5907 (N.P.L.)
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6
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Nguyen VK, Nguyen-Si HV, Devi AP, Poonsukkho P, Sangvichien E, Tran TN, Yusuke H, Mitsunaga T, Chavasiri W. Eumitrins F-H: three new xanthone dimers from the lichen Usnea baileyi and their biological activities. Nat Prod Res 2022; 37:1480-1490. [PMID: 34984944 DOI: 10.1080/14786419.2021.2023143] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
The lichen Usnea baileyi is a fruticose lichen belonging to the Usnea genus. It is well known as a rich source of natural xanthone dimers and possesses various bioactivities. Nevertheless, the chemical investigation on this type of lichen is still rare as most of researches reported its components without structural elucidation. Herein, in the continuous study on this type of lichen, we further isolate xanthone dimers from the dichloromethane extract and explore three new xanthone dimers, eumitrins F - H (1 - 3). Their structures were elucidated unambiguously by spectroscopic analyses, including high resolution electrospray ionisation mass spectrometry (HRESIMS), 1 D and 2 D nuclear magnetic resonance spectroscopy (1 D and 2 D NMR), and DP4 probability. All compounds were evaluated for their enzyme inhibition against α-glucosidase, tyrosinase, and antibacterial activity. They revealed moderate antimicrobial and weak tyrosinase inhibition. For α-glucosidase inhibition, compound 3 displayed the most significant inhibitory against α-glucosidase possessing an IC50 value of 64.2 µM.
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Affiliation(s)
- Van-Kieu Nguyen
- Institute of Fundamental and Applied Sciences, Duy Tan University, Ho Chi Minh City, Vietnam.,Faculty of Natural Sciences, Duy Tan University, Da Nang, Vietnam
| | - Hoai-Vu Nguyen-Si
- Institute of Fundamental and Applied Sciences, Duy Tan University, Ho Chi Minh City, Vietnam.,Faculty of Natural Sciences, Duy Tan University, Da Nang, Vietnam
| | - Asshaima Paramita Devi
- Center of Excellence in Natural Products Chemistry, Department of Chemistry, Faculty of Science, Chulalongkorn University, Pathumwan, Bangkok, Thailand.,Program of Biotecnology, Faculty of Science, Chulalongkorn University, Bangkok, Thailand
| | - Pakarapon Poonsukkho
- Lichen Research Unit and Lichen Herbarium, Department of Biology, Faculty of Science, Ramkhamhaeng University, Bangkok, Thailand
| | - Ek Sangvichien
- Lichen Research Unit and Lichen Herbarium, Department of Biology, Faculty of Science, Ramkhamhaeng University, Bangkok, Thailand
| | - Thanh-Nha Tran
- Department of Enviromental Engineering, Thu Dau Mot University, Binh Duong, Vietnam
| | - Hioki Yusuke
- Graduate School of Natural Science and Technology, Gifu University, Gifu, Japan
| | - Tohru Mitsunaga
- Faculty of Applied Biological Sciences, Gifu University, Gifu, Japan
| | - Warinthorn Chavasiri
- Center of Excellence in Natural Products Chemistry, Department of Chemistry, Faculty of Science, Chulalongkorn University, Pathumwan, Bangkok, Thailand
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7
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Hill RA, Sutherland A. Hot off the Press. Nat Prod Rep 2022. [DOI: 10.1039/d2np90034c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
A personal selection of 32 recent papers is presented covering various aspects of current developments in bioorganic chemistry and novel natural products such as hyjapone A from Hypericum japonicum.
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Affiliation(s)
- Robert A. Hill
- School of Chemistry, Glasgow University, Glasgow, G12 8QQ, UK
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