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Duong TH, Le HT, Vu YT, Duong GH, Le TKD, Dang MK, Pham DD, Pham NKT, Sichaem J, Nguyen NH. Bio-guided Isolation of Alpha-glucosidase Inhibitory Compounds from Vietnamese Lichen Roccella montagnei. Chem Biodivers 2024:e202400438. [PMID: 38581153 DOI: 10.1002/cbdv.202400438] [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: 02/20/2024] [Revised: 03/30/2024] [Accepted: 04/04/2024] [Indexed: 04/08/2024]
Abstract
A bio-guided isolation was applied to the Vietnamese lichen Roccella montagnei based on alpha-glucosidase inhibition. Six compounds were isolated and structurally elucidated, including a new ortho depside, montagneside A (1), together with five known compounds, sekikaic acid (2), lanost-7-en-3β-ol (3), ethyl orsellinate (4), D-montagnetol (5), and D-erythrin (6). Their chemical structures were identified by extensive 1D and 2D NMR analysis, high-resolution mass spectroscopy, and comparisons with those reported in the literature. D-Erythrin (6), a major component, was selected for further modification using Smiles rearrangement. Three erythritol derivatives 6a-6c were synthesized. Compounds 1-3, 6, and 6a-6c were evaluated for alpha-glucosidase inhibition. Compounds 2 and 6a-6c showed significant alpha-glucosidase inhibition with IC50 values ranging from 7.9 to 149 µM, respectively. Molecular docking was applied to the most active compound 6a to clarify the inhibitory mechanism.
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Affiliation(s)
- Thuc Huy Duong
- Hochiminh city University of Education, Department of Chemistry, 280 An Duong Vuong Street, District 5, Hochiminh city, VIET NAM
| | - Huong Thuy Le
- Ton Duc Thang University, Faculty of Pharmacy, Nguyen Huu Tho, Ho Chi Minh Cỉty, Ho Chi Minh Cỉty, VIET NAM
| | - Y Thien Vu
- Ton Duc Thang University, Faculty of Pharmacy, Nguyen Huu Tho, Ho Chi Minh Cỉty, Ho Chi Minh Cỉty, VIET NAM
| | - Gia-Huy Duong
- Ho Chi Minh City University of Education, Department of Chemistry, An Duong Vuong, Ho Chi Minh City, Ho Chi Minh City, VIET NAM
| | - Thi-Kim-Dung Le
- Ton Duc Thang University, Faculty of Pharmacy, Nguyen Huu Tho, Ho Chi Minh Cỉty, Ho Chi Minh Cỉty, VIET NAM
| | - Minh-Khai Dang
- Ho Chi Minh City University of Education, Department of Chemistry, An Duong Vuong, Ho Chi Minh City, 084, Ho Chi Minh City, VIET NAM
| | - Duc-Dung Pham
- Ho Chi Minh City University of Education, Department of Chemistry, An Duong Vuong, Ho Chi Minh City, Ho Chi Minh City, VIET NAM
| | - Nguyen-Kim-Tuyen Pham
- Saigon University, Faculty of Environmental Science, An Duong Vuong, Ho Chi Minh City, Ho Chi Minh City, VIET NAM
| | - Jirapast Sichaem
- Thammasat University, Faculty of Science and Technology, Lampang 52190, Lampang 52190, THAILAND
| | - Ngoc-Hong Nguyen
- HUTECH Institute of Applied Sciences, Cirtect Institute, Dien Bien Phu, Ho Chi Minh City, Ho Chi Minh City, VIET NAM
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Nguyen NH, Vu YT, Nguyen TD, Cao TT, Nguyen HT, Le TKD, Sichaem J, Mai DT, Minh An TN, Duong TH. Bio-guided isolation of alpha-glucosidase inhibitory compounds from Vietnamese Garcinia schomburgkiana fruits: in vitro and in silico studies. RSC Adv 2023; 13:35408-35421. [PMID: 38053690 PMCID: PMC10694853 DOI: 10.1039/d3ra06760b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2023] [Accepted: 11/28/2023] [Indexed: 12/07/2023] Open
Abstract
Garcinia schomburgkiana is an edible tree widely distributed in the southern region of Vietnam. Little is known about the alpha-glucosidase inhibition of the Vietnamese Garcinia schomburgkiana. The aim of the current study was to explore the anti-diabetic potential of G. schomburgkiana fruits. All the fractions of G. schomburgkiana were evaluated for alpha-glucosidase inhibition, followed by bioassay-guided isolation. A new compound, epi-guttiferone Q (1), together with ten known compounds, guttiferones I-K (2-3), hypersampsone I (4), sampsonione D (5), sampsonione H (6), β-mangostin (7), α-mangostin (8), 9-hydroxycalabaxanthone (9), and fuscaxanthone (10), were isolated and structurally elucidated. The structure of the new metabolite 1 was confirmed through 1D and 2D NMR spectroscopy, and MS analysis. To the best of our knowledge, the metabolites (except 3) have not been isolated from this plant previously. All isolated compounds were evaluated for their alpha-glucosidase inhibition. Compounds 1-6 showed potent activity with IC50 values ranging from 16.2 to 130.6 μM. Compound 2 was further selected for a kinetic study. The result indicated that it was a competitive type. Additionally, in silico docking was employed to predict the binding mechanism of 1-2 and 4-6 in the active site of alpha-glucosidase, suggesting their potential as promising anti-diabetic compounds. Molecular dynamic simulation was also applied to 1 to better understand its inhibitory mechanism.
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Affiliation(s)
- Ngoc-Hong Nguyen
- CirTech Institute, HUTECH University 475 A Dien Bien Phu Street Binh Thanh District Ho Chi Minh City 700000 Vietnam
| | - Y Thien Vu
- Faculty of Pharmacy, Ton Duc Thang University Ho Chi Minh City 700000 Vietnam
| | - Tuan-Dat Nguyen
- Department of Chemistry, Ho Chi Minh City University of Education Ho Chi Minh City 700000 Vietnam
| | - Truong-Tam Cao
- Department of Chemistry, Ho Chi Minh City University of Education Ho Chi Minh City 700000 Vietnam
| | - Huy Truong Nguyen
- Faculty of Pharmacy, Ton Duc Thang University Ho Chi Minh City 700000 Vietnam
| | - Thi-Kim-Dung Le
- Faculty of Pharmacy, Ton Duc Thang University Ho Chi Minh City 700000 Vietnam
- Laboratory of Biophysics, Institute for Advanced Study in Technology, Ton Duc Thang University 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
| | - Dinh-Tri Mai
- Graduate University of Science and Technology, Vietnam Academy of Science and Technology 18 Hoang Quoc Viet, Cau Giay Hanoi Vietnam
- Institute of Chemical Technology, Vietnam Academy of Science and Technology 1A TL29 Street, Thanh Loc ward, District 12 Ho Chi Minh City 700000 Vietnam
| | - Tran Nguyen Minh An
- Faculty of Chemical Engineering, Industrial University of Ho Chi Minh City 12 Nguyen Van Bao street, Ward 4, Go Vap District Ho Chi Minh City 700000 Vietnam
| | - Thuc-Huy Duong
- Department of Chemistry, Ho Chi Minh City University of Education Ho Chi Minh City 700000 Vietnam
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Duong TH, Vu YT, Long NP, Phan NHN, Pham NKT, Sichaem J, Kieu NKD, Duong CB, Nguyen TT, Dang VS, Nguyen HT. Bioactive-Guided Phytochemical Investigations, In Vitro and In Silico Alpha-Glucosidase Inhibition of Two Vietnamese Medicinal Plants Dicranopteris linearis and Psychotria adenophylla. Pharmaceuticals (Basel) 2023; 16:1253. [PMID: 37765061 PMCID: PMC10538207 DOI: 10.3390/ph16091253] [Citation(s) in RCA: 1] [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] [Received: 08/08/2023] [Revised: 08/26/2023] [Accepted: 09/01/2023] [Indexed: 09/29/2023] Open
Abstract
Little is known about the chemical and biological profiles of Dicranopteris linearis and Psychotria adenophylla. No previous studies have investigated alpha-glucosidase inhibition using extracts from D. linearis and P. adenophylla. In this paper, bioactive-guided isolation procedures were applied to the plants D. linearis and P. adenophylla based on alpha-glucosidase inhibition. From the most active fractions, 20 compounds (DL1-DL13 and PA1-PA7) were isolated. The chemical structures were elucidated using spectroscopic data and compared with those available in the literature. These compounds were evaluated for alpha-glucosidase inhibition, while a molecular docking study was performed to elucidate the mechanisms involved. Consequently, D. linearis and P. adenophylla might serve as a good potential for developing new antidiabetic preparations.
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Affiliation(s)
- Thuc-Huy Duong
- Department of Chemistry, University of Education, 280 An Duong Vuong Street, District 5, Ho Chi Minh City 700000, Vietnam; (T.-H.D.); (N.-H.-N.P.); (N.-K.-D.K.); (C.-B.D.)
| | - Y Thien Vu
- Faculty of Pharmacy, Ton Duc Thang University, Ho Chi Minh City 700000, Vietnam;
| | - Nguyen Phuoc Long
- Department of Pharmacology and PharmacoGenomics Research Center, Inje University College of Medicine, Busan 47392, Republic of Korea;
| | - Nguyen-Hong-Nhi Phan
- Department of Chemistry, University of Education, 280 An Duong Vuong Street, District 5, Ho Chi Minh City 700000, Vietnam; (T.-H.D.); (N.-H.-N.P.); (N.-K.-D.K.); (C.-B.D.)
- Faculty of Environment, Sai Gon University, 273 An Duong Vuong, Ward 3, District 5, Ho Chi Minh City 700000, Vietnam;
| | - Nguyen-Kim-Tuyen Pham
- Faculty of Environment, Sai Gon University, 273 An Duong Vuong, Ward 3, 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;
| | - Nguyen-Khanh-Duy Kieu
- Department of Chemistry, University of Education, 280 An Duong Vuong Street, District 5, Ho Chi Minh City 700000, Vietnam; (T.-H.D.); (N.-H.-N.P.); (N.-K.-D.K.); (C.-B.D.)
| | - Chi-Bao Duong
- Department of Chemistry, University of Education, 280 An Duong Vuong Street, District 5, Ho Chi Minh City 700000, Vietnam; (T.-H.D.); (N.-H.-N.P.); (N.-K.-D.K.); (C.-B.D.)
- Faculty of Environment, Sai Gon University, 273 An Duong Vuong, Ward 3, District 5, Ho Chi Minh City 700000, Vietnam;
| | - Thanh-Trung Nguyen
- Institute of Research and Development, Duy Tan University, Danang 550000, Vietnam
- Center for Pharmaceutical Biotechnology, School of Medicine and Pharmacy, Duy Tan University, Danang 550000, Vietnam
| | - Van-Son Dang
- Vietnam Academy of Science and Technology, Graduate University of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi 100000, Vietnam;
- Institute of Tropical Biology, Vietnam Academy of Science and Technology, 85 Tran Quoc Toan Street, District 3, Ho Chi Minh City 700000, Vietnam
| | - Huy Truong Nguyen
- Faculty of Pharmacy, Ton Duc Thang University, Ho Chi Minh City 700000, Vietnam;
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Nguyen NH, Duong TH, Truong Nguyen H, Vu YT, Tran TMD, Ho TTV, Mai CC, Mai DT, Nguyen HC, Thuy Le H, Pham DD. New Halogenated Flavonoids from Adenosma bracteosum and Vitex negundo and Their α-Glucosidase Inhibition. Chem Biodivers 2023; 20:e202300390. [PMID: 37293748 DOI: 10.1002/cbdv.202300390] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2023] [Revised: 06/05/2023] [Accepted: 06/05/2023] [Indexed: 06/10/2023]
Abstract
Adenosma bracteosum and Vitex negundo are natural sources of methoxylated flavonoids. Little is known about the α-glucosidase inhibition of multi-methoxylated flavonoid derivatives. Eighteen natural flavonoids were isolated from A. bracteosum and V. negundo. Seven halogenated derivatives were synthesized. Their chemical structures were elucidated by extensive NMR analysis and high-resolution mass spectroscopy as well as comparisons in literature. All compounds were evaluated for their α-glucosidase inhibition. Most compounds showed good activity with IC50 values ranging from 16.7 to 421.8 μM. 6,8-Dibromocatechin was the most active compound with an IC50 value of 16.7 μM. A molecular docking study was conducted, indicating that those compounds are potent α-glucosidase inhibitors.
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Affiliation(s)
- Ngoc-Hong Nguyen
- CirTech Institute, HUTECH University, 475 A Dien Bien Phu Street, Binh Thanh District, Ho Chi Minh City, 72300, 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, 72700, Vietnam
| | - Huy Truong Nguyen
- Faculty of Pharmacy, Ton Duc Thang University, Ho Chi Minh City, 72900, Vietnam
| | - Y Thien Vu
- Faculty of Pharmacy, Ton Duc Thang University, Ho Chi Minh City, 72900, Vietnam
| | - Thi-Minh-Dinh Tran
- Department of Biology, Ho Chi Minh City University of Education, 280 An Duong Vuong Street, District 5, Ho Chi Minh City, 72700, Vietnam
| | - Thi-Thanh-Van Ho
- Department of Chemistry, Ho Chi Minh City University of Education, 280 An Duong Vuong Street, District 5, Ho Chi Minh City, 72700, Vietnam
| | - Chi-Cong Mai
- Department of Chemistry, Ho Chi Minh City University of Education, 280 An Duong Vuong Street, District 5, Ho Chi Minh City, 72700, Vietnam
| | - Dinh-Tri Mai
- Graduate University of Science and Technology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi, 122000, Vietnam
- Institute of Chemical Technology, Vietnam Academy of Science and Technology, 1A TL29 Street, Thanh Loc ward, District 12, Ho Chi Minh City, Vietnam
| | - Hoang-Chuong Nguyen
- Faculty of Biology-Biotechnology, University of Science, Vietnam National University Ho Chi Minh City, Ho Chi Minh City, 72711, Vietnam
| | - Huong Thuy Le
- Faculty of Pharmacy, Ton Duc Thang University, Ho Chi Minh City, 72900, Vietnam
| | - Duc-Dung Pham
- Department of Chemistry, Ho Chi Minh City University of Education, 280 An Duong Vuong Street, District 5, Ho Chi Minh City, 72700, Vietnam
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