1
|
Hoang LTTT, Phan HVT, Nguyen-Si HV, Tran TN, Vo TPG, Le HTT, Dao NVT, Huynh TMS, Mai DT, Dong PSN, Nguyen VK. Tinctoric acid A-B, two new hopan-type triterpenoids from the Vietnamese lichen, Parmotrema tinctorum (Despr. ex Nyl.) hale with α-glucosidase inhibitory activity. Nat Prod Res 2024:1-8. [PMID: 38258412 DOI: 10.1080/14786419.2024.2305659] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2023] [Accepted: 01/09/2024] [Indexed: 01/24/2024]
Abstract
Two new hopan-type triterpenoids, namely tinctoric acid A-B (1-2), were isolated from the lichen Parmotrema tinctorum (Despr. ex Nyl.) Hale. Their structures were elucidated by extensive spectroscopic analyses (1D and 2D NMR). The absolute configuration at C-22 of 1 was established through DP4 probability. Compounds 1-2 were evaluated for their inhibitory activity against α-glucosidase and found to be more potent than those of positive control (acarbose, IC50 168 µM) with values IC50 74.7 and 98.2 µM, respectively. Both of these compounds interacted well with enzyme α-glucosidase MAL32 through H-bonds and hydrophobic interaction.
Collapse
Affiliation(s)
- Le-Thuy-Thuy-Trang Hoang
- Laboratory of Advanced Materials Chemistry, Institute for Advanced Study in Technology, Ton Duc Thang University, Ho Chi Minh City, Vietnam
- Faculty of Applied Sciences, Ton Duc Thang University, Ho Chi Minh City, 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
| | - 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-Phi-Giao Vo
- Department of Ecology-Evolutionary Biology, University of Science, Ho Chi Minh City, Vietnam
- Vietnam National University Ho Chi Minh City, Thu Duc City, Vietnam
| | - Huong Thi Thu Le
- Department of Chemistry, Ho Chi Minh City University of Education, Ho Chi Minh City, Vietnam
| | - Ngoc-Van-Trang Dao
- Institute of Fundamental and Applied Sciences, Duy Tan University, Ho Chi Minh City, Vietnam
- Faculty of Natural Sciences, Duy Tan University, Da Nang, Vietnam
| | - Thi-Minh-Suong Huynh
- University of Natural Resources and Environment Ho Chi Minh City, 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
| | - Phan-Si-Nguyen Dong
- Institute of Fundamental and Applied Sciences, Duy Tan University, Ho Chi Minh City, Vietnam
- Faculty of Natural Sciences, Duy Tan University, Da Nang, 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
| |
Collapse
|
2
|
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 2023:1-8. [PMID: 37574817 DOI: 10.1080/14786419.2023.2245958] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [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.
Collapse
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
| |
Collapse
|
3
|
Khayat MT, Ghazawi KF, Samman WA, Alhaddad AA, Mohamed GA, Ibrahim SRM. Recent advances on natural depsidones: sources, biosynthesis, structure-activity relationship, and bioactivities. PeerJ 2023; 11:e15394. [PMID: 37197584 PMCID: PMC10184659 DOI: 10.7717/peerj.15394] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2023] [Accepted: 04/20/2023] [Indexed: 05/19/2023] Open
Abstract
Depsidones are a class of polyphenolic polyketides that have been proposed to be biosynthesized from oxidative coupling of esters of two polyketidic benzoic acid derivatives. They are principally encountered in fungi and lichens. In addition to their diversified structural features, they revealed varied bioactivities such as antimicrobial, antimalarial, cytotoxic, anti-inflammatory, anti-Helicobacter pylori, antimycobacterial, antihypertensive, anti-diarrheal, antidiabetic, phytotoxic, anti-HIV, anti-osteoclastogenic, and butyrylcholinesterase, tyrosinase, hyaluronidase, and acetylcholinesterase inhibition. The current work was targeted to provide an overview on the naturally reported depsidones from various sources in the period from 2018 to the end of 2022 including their structures, biosynthesis, sources, and bioactivities, as well as the reported structure-activity relationship and semisynthetic derivatives. A total of 172 metabolites with 87 references were reviewed. The reported findings unambiguously demonstrated that these derivatives could be promising leads for therapeutic agents. However, further in-vivo evaluation of their potential biological properties and mechanistic investigations are needed.
Collapse
Affiliation(s)
- Maan T. Khayat
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Kholoud F. Ghazawi
- Clinical Pharmacy Department, College of Pharmacy, Umm Al-Qura University, Makkah, Saudi Arabia
| | - Waad A. Samman
- Department of Pharmacology and Toxicology, College of Pharmacy, Taibah University, Al-Madinah Al-Munawwarah, Saudi Arabia
| | - Aisha A. Alhaddad
- Department of Pharmacology and Toxicology, College of Pharmacy, Taibah University, Al-Madinah Al-Munawwarah, Saudi Arabia
| | - Gamal A. Mohamed
- Department of Natural Products and Alternative Medicine, Faculty of Pharmacy, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Sabrin RM Ibrahim
- Department of Pharmacognosy, Faculty of Pharmacy, Assiut University, Assiut, Egypt
- Department of Chemistry, Batterjee Medical College, Jeddah, Saudi Arabia
| |
Collapse
|
4
|
Nguyen VK, Dong PSN, Nguyen-Si HV, Sangvichien E, Tran TN, Hoang LTTT, Dao MT, Hai-Nguyen, Phan HVT, Yusuke H, Mitsunaga T, Chavasiri W. Eumitrins I-K: three new xanthone dimers from the lichen Usnea baileyi. J Nat Med 2023; 77:403-411. [PMID: 36746835 DOI: 10.1007/s11418-023-01681-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2022] [Accepted: 01/11/2023] [Indexed: 02/08/2023]
Abstract
In the continuing discovery and structure elucidation of natural xanthone dimers, which are still rarely reported in absolute configuration, three new xanthone dimers, eumitrins I-K (1-3) were isolated from the lichen Usnea baileyi, a rich source of natural xanthone dimers. Their structures were elucidated unambiguously by spectroscopic analyses, including high-resolution electrospray ionization mass spectrometry (HRESIMS), 1D and 2D nuclear magnetic resonance spectroscopy (1D and 2D NMR). The absolute configuration of all three compounds was established through DP4 probability and ECD calculation. All compounds revealed weak activity for their enzymatic inhibition against α-glucosidase and tyrosinase, as well as antibacterial activity.
Collapse
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.
| | - Phan-Si-Nguyen Dong
- 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
| | - Ek Sangvichien
- Lichen Research Unit and Lichen Herbarium, Department of Biology, Faculty of Science, Ramkhamhaeng University, Bangkapi, Bangkok, 10240, Thailand
| | - Thanh-Nha Tran
- Department of Environmental Engineering, Thu Dau Mot University, Binh Duong, Vietnam
| | | | - Minh-Trung Dao
- Department of Environmental Engineering, Thu Dau Mot University, Binh Duong, Vietnam
| | - Hai-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
| | - 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
| | - Hioki Yusuke
- Graduate School of Natural Science and Technology, Gifu University, 1-1 Yanagido, Gifu, 501-1193, Japan
| | - Tohru Mitsunaga
- Faculty of Applied Biological Sciences, Gifu University, 1-1 Yanagido, Gifu, 501-1193, Japan
| | - Warinthorn Chavasiri
- Center of Excellence in Natural Products Chemistry, Department of Chemistry, Faculty of Science, Chulalongkorn University, Pathumwan, Bangkok, 10330, Thailand.
| |
Collapse
|
5
|
Wei PP, Ai HL, Shi BB, Ye K, Lv X, Pan XY, Ma XJ, Xiao D, Li ZH, Lei XX. Paecilins F–P, new dimeric chromanones isolated from the endophytic fungus Xylaria curta E10, and structural revision of paecilin A. Front Microbiol 2022; 13:922444. [PMID: 36118220 PMCID: PMC9478379 DOI: 10.3389/fmicb.2022.922444] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2022] [Accepted: 08/15/2022] [Indexed: 11/13/2022] Open
Abstract
A total of eleven new dimeric chromanones, paecilins F-P (2–12), were isolated from the endophytic fungus Xylaria curta E10, along with four known analogs (1, 13–15). Their structures and absolute configurations were determined by extensive experimental spectroscopic methods, single-crystal X-ray diffraction, and equivalent circulating density (ECD) calculations. In addition, the structure of paecilin A, which was reported to be a symmetric C8-C8′ dimeric pattern, was revised by analysis of the nuclear magnetic resonance (NMR) data, and single-crystal X-ray diffraction. Compound 1 showed antifungal activity against the human pathogenic fungus Candida albicans with a minimum inhibitory concentration of 16 μg/mL, and Compounds 8 and 10 showed antibacterial activity against the gram-negative bacterium Escherichia coli with the same minimum inhibitory concentration of 16 μg/mL.
Collapse
|
6
|
Gampa M, Padmaja P, Khalivulla SI, Reddy PN. Synthesis and Antimicrobial and Antioxidant Activities of 1,2,3-Triazole-Tethered Xanthone Derivatives. Russ J Org Chem 2022. [DOI: 10.1134/s1070428022060173] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
|
7
|
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] [What about the content of this article? (0)] [Affiliation(s)] [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.
Collapse
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
| |
Collapse
|
8
|
Pham NKT, Nguyen HT, Dao TBN, Vu-Huynh KL, Nguyen TQT, Huynh BLC, Le TD, Nguyen NH, Nguyen NH, Duong TH. Two new phenolic compounds from the lichen Parmotrema cristiferum growing in Vietnam. Nat Prod Res 2021; 36:3865-3871. [PMID: 33656403 DOI: 10.1080/14786419.2021.1892672] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
Two new phenolic compounds, cristiferides A-B (1-2) together with six known compounds, 2,4-dihydroxyphthalide (3), lecanoric acid (4), orsellinic acid (5), 5-chloroorsellinic acid (6), methyl haematommate (7), and methyl β-orsellinate (8) were isolated from the lichen Parmotrema cristiferum (Taylor) Hale (Parmeliaceae). The structures of isolated compounds were identified from its spectroscopic data and by comparison with the literatures. Compounds 1-3 and 6-8 were evaluated for alpha-glucosidase inhibition. Compounds 2 and 7 revealed potent activity with IC50 values of 72.66 μM and 48.73 μM, respectively.
Collapse
Affiliation(s)
| | - Huy Truong Nguyen
- Faculty of Pharmacy, Ton Duc Thang University, Ho Chi Minh City, Vietnam
| | - Thi-Bich-Ngoc Dao
- Department of Chemistry, University of Education, Ho Chi Minh City, Vietnam
| | - Kim Long Vu-Huynh
- Faculty of Pharmacy, Ton Duc Thang University, Ho Chi Minh City, Vietnam
| | | | | | - Tien-Dung Le
- Vietnam Academy of Science and Technology, Graduate University of Science and Technology, Ha Noi, Vietnam.,Institute of Applied Materials Science, Vietnam Academy of Science and Technology, Ho Chi Minh City, Vietnam
| | - Ngoc-Hung Nguyen
- Department of Chemistry, University of Education, Ho Chi Minh City, Vietnam
| | - Ngoc-Hong Nguyen
- CirTech Institute, Ho Chi Minh City University of Technology (HUTECH), Ho Chi Minh City, Vietnam
| | - Thuc-Huy Duong
- Department of Chemistry, University of Education, Ho Chi Minh City, Vietnam
| |
Collapse
|
9
|
Duong TH, Nguyen VK, Sichaem J, Tran TN, Do TH, Pham NKT, Nguyen TAT, Nguyen THT, Mai DT, Nguyen NH, Huynh BLC. Reticulatin, a novel C 43-spiroterpenoid from the lichen Parmotrema reticulatum growing in Vietnam. Nat Prod Res 2021; 36:3705-3712. [PMID: 33576270 DOI: 10.1080/14786419.2021.1885032] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
A novel C43-spiroterpenoid, reticulatin (1), was isolated from the lichen Parmotrema reticulatum (Taylor) M. Choisy (Parmeliaceae). Five previously-reported compounds were also isolated: zeorin (2), leucotylin (3), lupeol (4), betulinic acid (5), and dihydroreynosin (6). The structures were elucidated by 1D, 2D NMR, and HRESIMS spectroscopy and comparison with the literature. We propose that reticulatin is a biosynthetic product of fusicoccadiene and vinapraesorediosic acid A via Diels-Alder addition. Reticulatin is the first C43-spiroterpenoid identified from lichen metabolites. All compounds were evaluated for inhibition of α-glucosidase. Compound 1 showed the most potent inhibition, with an IC50 value of 3.90 μM, much lower than that of the acarbose positive control (IC50 165 µM).
Collapse
Affiliation(s)
- Thuc-Huy Duong
- Department of Chemistry, Ho Chi Minh City University of Education, 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
| | - Jirapast Sichaem
- Research Unit in Natural Products Chemistry and Bioactivities, Faculty of Science and Technology, Thammasat University Lampang Campus, Lampang, Thailand
| | - Thanh-Nha Tran
- Department of Chemistry, Ho Chi Minh City University of Education, Ho Chi Minh City, Vietnam
| | - Thanh-Hung Do
- NTT Hi-Tech Institute, Nguyen Tat Thanh University, Ho Chi Minh City, Vietnam
| | | | - Thi-Anh-Tuyet Nguyen
- Department of Chemistry, Ho Chi Minh City University of Education, Ho Chi Minh City, Vietnam
| | - Thi-Hoai-Thu Nguyen
- Faculty of Basic Sciences, University of Medicine and Pharmacy at Ho Chi Minh City, Ho Chi Minh City, Vietnam
| | - Dinh-Tri Mai
- Graduate University of Science and Technology, Vietnam Academy of Science and Technology, Ho Chi Minh City, Vietnam.,Institute of Chemical Technology, Vietnam Academy of Science and Technology, Ho Chi Minh City, Vietnam
| | - Ngoc-Hong Nguyen
- CirTech Institute, Ho Chi Minh City University of Technology (HUTECH), Ho Chi Minh City, Vietnam
| | | |
Collapse
|
10
|
Bui VM, Duong TH, Nguyen TAM, Nguyen TNV, Nguyen NH, Nguyen HH, Chavasiri W, Nguyen KPP, Huynh BLC. Two new phenolic compounds from the Vietnamese lichen Parmotrema tinctorum. Nat Prod Res 2020; 36:3429-3434. [PMID: 33356561 DOI: 10.1080/14786419.2020.1864367] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
Chemical investigation of the lichen Parmotrema tinctorum (Nyl.) Hale led to the isolation of two new phenolic compounds, 2-ethylhexyl orsellinate (1) and tinctorinone (2). The structures were determined by analysis of their MS and NMR data as well as by comparison with literature data. The 2-ethylhexyl ester group of 2-ethylhexyl orsellinate is uncommon among lichen metabolites. Tinctorinone revealed strong inhibition towards α-glucosidase.
Collapse
Affiliation(s)
- Van-Muoi Bui
- Department of Organic Chemistry, University of Science, National University - Ho Chi Minh City, Ho Chi Minh City, Vietnam
| | - Thuc-Huy Duong
- Department of Chemistry, Ho Chi Minh City University of Education, Ho Chi Minh City, Vietnam
| | | | - Thi-Ngoc-Van Nguyen
- Department of Organic Chemistry, University of Science, National University - Ho Chi Minh City, Ho Chi Minh City, Vietnam
| | - Ngoc-Hong Nguyen
- CirTech Institute, Ho Chi Minh City University of Technology (HUTECH), Ho Chi Minh City, Vietnam
| | - Huu-Hung Nguyen
- Faculty of Technology, Van Lang University, Ho Chi Minh City, Vietnam
| | - Warinthorn Chavasiri
- Center of Excellence in Natural Products Chemistry, Department of Chemistry, Faculty of Science, Chulalongkorn University, Bangkok, Thailand
| | - Kim-Phi-Phung Nguyen
- Department of Organic Chemistry, University of Science, National University - Ho Chi Minh City, Ho Chi Minh City, Vietnam
| | | |
Collapse
|