1
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Do TNV, Nguyen HX, Le TH, Dang PH, Nguyen NT, Nguyen MTT. Taxotrophises A and B, two new polyphenols from the stems of Taxotrophis ilicifolius. Nat Prod Res 2024; 38:2187-2192. [PMID: 36606539 DOI: 10.1080/14786419.2022.2164579] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Revised: 12/19/2022] [Accepted: 12/25/2022] [Indexed: 01/07/2023]
Abstract
From the EtOAc extract of the wood of the stems of Taxotrophis ilicifolius (Moraceae), two new secondary metabolites, named taxotrophises A (1) and B (2), were isolated, together with five known compounds (3-7). Their chemical structures have been elucidated by extensive NMR spectroscopic analysis. All isolated compounds have been evaluated for α-glucosidase inhibitory activity. In the present work, compounds 1 and 4 showed the strongest α-glucosidase inhibitory activity with IC50 values of 6.5 and 1.5 μM, respectively, and stronger than that of a positive control, acarbose (IC50; 214.5 μM).
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Affiliation(s)
- Truong Nhat Van Do
- Faculty of Chemistry, University of Science, Ho Chi Minh City, Vietnam
- Vietnam National University, Ho Chi Minh City, Vietnam
- Research Lab for Drug Discovery and Development, University of Science, Ho Chi Minh City, Vietnam
| | - Hai Xuan Nguyen
- Faculty of Chemistry, University of Science, Ho Chi Minh City, Vietnam
- Vietnam National University, Ho Chi Minh City, Vietnam
- Research Lab for Drug Discovery and Development, University of Science, Ho Chi Minh City, Vietnam
| | - Tho Huu Le
- Faculty of Chemistry, University of Science, Ho Chi Minh City, Vietnam
- Vietnam National University, Ho Chi Minh City, Vietnam
- Research Lab for Drug Discovery and Development, University of Science, Ho Chi Minh City, Vietnam
| | - Phu Hoang Dang
- Faculty of Chemistry, University of Science, Ho Chi Minh City, Vietnam
- Vietnam National University, Ho Chi Minh City, Vietnam
- Research Lab for Drug Discovery and Development, University of Science, Ho Chi Minh City, Vietnam
| | - Nhan Trung Nguyen
- Faculty of Chemistry, University of Science, Ho Chi Minh City, Vietnam
- Vietnam National University, Ho Chi Minh City, Vietnam
- Research Lab for Drug Discovery and Development, University of Science, Ho Chi Minh City, Vietnam
- Cancer Research Laboratory, University of Science, Ho Chi Minh City, Vietnam
| | - Mai Thanh Thi Nguyen
- Faculty of Chemistry, University of Science, Ho Chi Minh City, Vietnam
- Vietnam National University, Ho Chi Minh City, Vietnam
- Research Lab for Drug Discovery and Development, University of Science, Ho Chi Minh City, Vietnam
- Cancer Research Laboratory, University of Science, Ho Chi Minh City, Vietnam
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2
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Le TH, Nguyen NKT, Nguyen MTT, Nguyen NT. Two new phenylbutenoids from the rhizomes of cassumunar ginger and their α-glucosidase inhibitory activity. Nat Prod Res 2024; 38:1545-1552. [PMID: 36576074 DOI: 10.1080/14786419.2022.2157826] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2022] [Revised: 11/29/2022] [Accepted: 12/06/2022] [Indexed: 12/29/2022]
Abstract
An extract from the rhizomes of Cassumunar ginger (Zingiber purpureum Roscoe). was found to have significant α-glucosidase inhibitory activity with an IC50 value of 6.3 µg/mL. Two new phenylbutenoids, cassudimin A (1) and cassumunol N (2), and seven known compounds (3-9) were isolated. Their structures and relative configurations of two new compounds were elucidated based on spectra interpretation. Compounds 1-3, 6-9 showed more potent α-glucosidase inhibitory activity than a positive control, acarbose (IC50 = 168.0 µM). Dehydrozingerone (6) exhibited the most potent α-glucosidase inhibition with an IC50 value of 8.3 μM. Compounds 7 and 9 were found in Z. purpureum rhizomes for the first time.
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Affiliation(s)
- Tho Huu Le
- Faculty of Chemistry, University of Science, Ho Chi Minh City, Vietnam
- Vietnam National University, Ho Chi Minh City, Vietnam
- Research Lab for Drug Discovery and Development, University of Science, Ho Chi Minh City, Vietnam
| | - Ngan Kim Thi Nguyen
- Faculty of Chemistry, University of Science, Ho Chi Minh City, Vietnam
- Vietnam National University, Ho Chi Minh City, Vietnam
| | - Mai Thanh Thi Nguyen
- Faculty of Chemistry, University of Science, Ho Chi Minh City, Vietnam
- Vietnam National University, Ho Chi Minh City, Vietnam
- Research Lab for Drug Discovery and Development, University of Science, Ho Chi Minh City, Vietnam
- Cancer Research Laboratory, University of Science, Ho Chi Minh City, Vietnam
| | - Nhan Trung Nguyen
- Faculty of Chemistry, University of Science, Ho Chi Minh City, Vietnam
- Vietnam National University, Ho Chi Minh City, Vietnam
- Research Lab for Drug Discovery and Development, University of Science, Ho Chi Minh City, Vietnam
- Cancer Research Laboratory, University of Science, Ho Chi Minh City, Vietnam
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3
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Van Do TN, Le TH, Nguyen HX, Vo TNT, Dang PH, Nguyen NT, Nguyen MTT. δ-Tocopherol derivatives from the leaves of Muntingia calabura L. Nat Prod Res 2021; 36:5524-5529. [PMID: 34933616 DOI: 10.1080/14786419.2021.2018589] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
From an ethyl acetate-soluble fraction of the leaves of Muntingia calabura, one new trimeric δ-tocopherol derivative named as tocomuntin A (1), together with three known δ-tocopherol derivatives (2-4) were isolated. Their structures were elucidated based on the interpretation of NMR and MS spectroscopic data. In this work, δ-tocopherol (3) was found to have α-glucosidase inhibitory activity for the first time (IC50, 47.3 μM).
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Affiliation(s)
- Truong Nhat Van Do
- Faculty of Chemistry, University of Science, Ho Chi Minh City, Vietnam.,Vietnam National University, Ho Chi Minh City, Vietnam
| | - Tho Huu Le
- Faculty of Chemistry, University of Science, Ho Chi Minh City, Vietnam.,Vietnam National University, Ho Chi Minh City, Vietnam
| | - Hai Xuan Nguyen
- Faculty of Chemistry, University of Science, Ho Chi Minh City, Vietnam.,Vietnam National University, Ho Chi Minh City, Vietnam
| | - Trang Ngoc Tran Vo
- Faculty of Chemistry, University of Science, Ho Chi Minh City, Vietnam.,Vietnam National University, Ho Chi Minh City, Vietnam
| | - Phu Hoang Dang
- Faculty of Chemistry, University of Science, Ho Chi Minh City, Vietnam.,Vietnam National University, Ho Chi Minh City, Vietnam
| | - Nhan Trung Nguyen
- Faculty of Chemistry, University of Science, Ho Chi Minh City, Vietnam.,Vietnam National University, Ho Chi Minh City, Vietnam.,Cancer Research Laboratory, University of Science, Ho Chi Minh City, Vietnam
| | - Mai Thanh Thi Nguyen
- Faculty of Chemistry, University of Science, Ho Chi Minh City, Vietnam.,Vietnam National University, Ho Chi Minh City, Vietnam.,Cancer Research Laboratory, University of Science, Ho Chi Minh City, Vietnam
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4
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Zhang Z, Li L, Huang G, Zhou T, Zhang X, Leng X, Chen Z, Lin J. Embelia Laeta aqueous extract suppresses acute inflammation via decreasing COX-2/iNOS expression and inhibiting NF-κB pathway. JOURNAL OF ETHNOPHARMACOLOGY 2021; 281:114575. [PMID: 34461190 DOI: 10.1016/j.jep.2021.114575] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/07/2021] [Revised: 08/22/2021] [Accepted: 08/26/2021] [Indexed: 06/13/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE The root of Embelia laeta (L.) Mez., which is called Suanjifeng in Chinese ethnic Yao medicine, is traditionally for inflammation-related diseases, such as oral ulcer, sore throat, enteritis, and rheumatoid arthritis. However, the biological properties and the underlying mechanisms of Embelia laeta still need further studies. AIM OF THIS STUDY The present study aims to investigate the anti-inflammatory effect and its underlying mechanisms of Embelia laeta. MATERIALS AND METHODS In this study, except acute toxicity experiments, Kunming (KM) mice of either sex were enrolled to establish inflammatory model induced by xylene, acetic acid and carrageenan, respectively. Mice were randomly divided into different groups and pretreated by oral gavage with different doses of Embelia laeta aqueous extract (ELAE) (2.5, 5, 10 g/kg) and 10 mg/kg of Indo for 7 days. Ear edema, vascular permeability, abdominal writhing, and paw edema degree were detected in related experiments. Moreover, in the carrageenan-induced paw edema mice model, histological changes were detected by H&E staining. MDA, MPO and NO were detected by assay kit. Proinflammatory cytokines of IFN-γ, TNF-α, IL-1β, IL-6 and PGE2 were detected by ELISA. Additionally, COX-2, iNOS and NF-κB pathway-related proteins were detected by Western blotting. RESULTS Results showed that the ELAE evoked an obvious dose-dependent inhibition of ear edema induced by xylene, paw edema induced by carrageenan, as well as suppressing the increase of vascular permeability and writhing times elicited by acetic acid. Histopathological analysis indicated that ELAE could significantly decrease the cellular infiltration in paw tissue. ELAE showed antioxidant property through markedly decrease the MDA level and MPO activity in edema paw. In addition, ELAE decreased the proinflammatory cytokines IFN-γ, TNF-α, IL-1β, IL-6, PGE2 and NO that induced by carrageenan. Western blotting results also showed that ELAE could obviously downregulate the COX-2 and iNOS expression. Further analysis revealed that ELAE also inhibited NF-κB from the cytoplasm to the nucleus and stabilize the conversion of IκBα. CONCLUSION ELAE had powerful anti-inflammatory property, which might be had a close relationship with mediating proinflammatory cytokines production, decreasing the COX-2 and iNOS expression, and inhibiting the activation of NF-κB signaling pathway.
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Affiliation(s)
- Zhongmin Zhang
- College of Pharmacy, Guangxi University of Chinese Medicine, Nanning, China.
| | - Li Li
- College of Pharmacy, Guangxi University of Chinese Medicine, Nanning, China; College of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, China.
| | - Guoxin Huang
- Clinical Research Center, Shantou Central Hospital, Shantou, Guangdong, China.
| | - Tong Zhou
- College of Pharmacy, Faculty of Chinese Medicine Science, Guangxi University of Chinese Medicine, Nanning, China.
| | - Xinyue Zhang
- College of Pharmacy, Faculty of Chinese Medicine Science, Guangxi University of Chinese Medicine, Nanning, China.
| | - Xinxin Leng
- College of Pharmacy, Faculty of Chinese Medicine Science, Guangxi University of Chinese Medicine, Nanning, China.
| | - Zhenxing Chen
- College of Basic Medicine, Guangxi University of Chinese Medicine, Nanning, China.
| | - Jiang Lin
- College of Basic Medicine, Guangxi University of Chinese Medicine, Nanning, China.
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5
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Huu DMN, Dang PH, Huynh NV, Dang HP, Vuong L, Nguyen TLT. Pipercyclobutanamide D, a new member of the cyclobutanamide-type alkaloid, from the roots of Piper nigrum. JOURNAL OF ASIAN NATURAL PRODUCTS RESEARCH 2021; 23:906-912. [PMID: 32744069 DOI: 10.1080/10286020.2020.1794858] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/14/2020] [Revised: 07/07/2020] [Accepted: 07/08/2020] [Indexed: 06/11/2023]
Abstract
From the EtOH-soluble extract of the roots of Piper nigrum, one new dimeric alkamide, pipercyclobutanamide D (1) was isolated. Its structure was elucidated on the basis of NMR spectroscopic interpretation. The relative configuration of 1 was determined based on the NOESY analysis. Compound 1 showed α-glucosidase inhibitory activity with an IC50 value of 158.5 µM. In addition, compound 1 exhibited cytotoxicity against the MCF-7 and HepG2 cell lines with the IC50 values of 45.6 and 63.9 µM, respectively. Plausible biosynthetic pathway for the formation of 1 was proposed based on regioselective [2 + 2] cycloaddition reaction.
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Affiliation(s)
- Duc Minh Nguyen Huu
- Faculty of Traditional Medicine, University of Medicine and Pharmacy at Ho Chi Minh City, Ho Chi Minh City 72716, Vietnam
| | - Phu Hoang Dang
- Faculty of Chemistry, University of Science, Ho Chi Minh City 72711, Vietnam
- Vietnam National University, Ho Chi Minh City 71308, Vietnam
| | - Ngoc Vinh Huynh
- Faculty of Chemistry, University of Science, Ho Chi Minh City 72711, Vietnam
- Vietnam National University, Ho Chi Minh City 71308, Vietnam
| | - Huu Phuc Dang
- Laboratory of Applied Physics, Advanced Institute of Materials Science, Ton Duc Thang University, Ho Chi Minh City 72915, Vietnam
- Faculty of Applied Sciences, Ton Duc Thang University, Ho Chi Minh City 72915, Vietnam
| | - Loi Vuong
- Institute of Applied Technology, Thu Dau Mot University, Binh Duong Province 75109, Vietnam
| | - Thi Lien Thuong Nguyen
- Institute of Applied Technology, Thu Dau Mot University, Binh Duong Province 75109, Vietnam
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6
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Chen HJ, Zhang XS, Zhang JW, Gu HX, Huang JX. Chemical constituents from the stems of Acanthopanax senticosus with their inhibitory activity on α-glucosidase. JOURNAL OF ASIAN NATURAL PRODUCTS RESEARCH 2021; 23:803-808. [PMID: 32614676 DOI: 10.1080/10286020.2020.1783657] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/23/2020] [Accepted: 06/14/2020] [Indexed: 06/11/2023]
Abstract
A new aurone named (2Z)-2-[(4'-hydroxy-3'-methoxyphenyl) methylene]-6-methoxy-7-prenyl-3(2H)-benzofurane (1), together with five known compounds (2-6), were isolated from EtOAc-soluble extract of the stems of Acanthopanax senticosus. The chemical structures were elucidated on the basis of spectroscopic analyses. All isolates were evaluated for in vitro inhibitory activity on α-glucosidase. Among them, compounds 1 and 4 were found to exhibit moderate inhibitory activity on α-glucosidase with IC50 value of 64.1 ± 1.2 and 48.9 ± 1.1 μM, respectively.[Formula: see text].
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Affiliation(s)
- Hong-Jun Chen
- Department of Pharmacy, Jingjiang People's Hospital, Jingjiang 214500, China
| | - Xue-Song Zhang
- Department of Central Laboratory, Jingjiang People's Hospital, Jingjiang 214500, China
| | - Jiu-Wen Zhang
- Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
| | - Hai-Xuan Gu
- Jiangsu Sanjiang Pharmaceutical Co., Ltd, Jiangsu 214500, China
| | - Ji-Xun Huang
- Department of Pharmacy, Jingjiang People's Hospital, Jingjiang 214500, China
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7
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Nguyen NT, Tran TTT, Dang PH, Le TH, Nguyen HX, Do TNV, Nguyen MTT. A new 8,3'-neolignan from Solanum procumbens Lour. Nat Prod Res 2021; 36:5081-5085. [PMID: 33939574 DOI: 10.1080/14786419.2021.1916746] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
The phytochemical investigation of the EtOAc-soluble fraction of the aerial parts of Solanum procumbens Lour. has been carried out to obtain seven compounds, including a new 8,3'-neolignan named solacanin A (1). Their chemical structures were elucidated based on the spectroscopic data interpretation. All isolated compounds were tested for their α-glucosidase inhibitory activity. Compounds 1 and 3-6 showed inhibitory activity with IC50 values of 221.5, 18.9, 6.0, 104.1, and 219.7 µM, respectively.
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Affiliation(s)
- Nhan Trung Nguyen
- Faculty of Chemistry, University of Science, Ho Chi Minh City, Vietnam.,Vietnam National University, Ho Chi Minh City, Vietnam.,Cancer Research Laboratory, University of Science, Ho Chi Minh City, Vietnam
| | - Thuy Thanh Thi Tran
- Faculty of Chemistry, University of Science, Ho Chi Minh City, Vietnam.,Vietnam National University, Ho Chi Minh City, Vietnam
| | - Phu Hoang Dang
- Faculty of Chemistry, University of Science, Ho Chi Minh City, Vietnam.,Vietnam National University, Ho Chi Minh City, Vietnam
| | - Tho Huu Le
- Faculty of Chemistry, University of Science, Ho Chi Minh City, Vietnam.,Vietnam National University, Ho Chi Minh City, Vietnam
| | - Hai Xuan Nguyen
- Faculty of Chemistry, University of Science, Ho Chi Minh City, Vietnam.,Vietnam National University, Ho Chi Minh City, Vietnam
| | - Truong Nhat Van Do
- Faculty of Chemistry, University of Science, Ho Chi Minh City, Vietnam.,Vietnam National University, Ho Chi Minh City, Vietnam
| | - Mai Thanh Thi Nguyen
- Faculty of Chemistry, University of Science, Ho Chi Minh City, Vietnam.,Vietnam National University, Ho Chi Minh City, Vietnam.,Cancer Research Laboratory, University of Science, Ho Chi Minh City, Vietnam
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8
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Chen X, Gao M, Jian R, Hong WD, Tang X, Li Y, Zhao D, Zhang K, Chen W, Zheng X, Sheng Z, Wu P. Design, synthesis and α-glucosidase inhibition study of novel embelin derivatives. J Enzyme Inhib Med Chem 2020; 35:565-573. [PMID: 31969031 PMCID: PMC7006637 DOI: 10.1080/14756366.2020.1715386] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2019] [Revised: 12/12/2019] [Accepted: 01/07/2020] [Indexed: 12/28/2022] Open
Abstract
Embelin is a naturally occurring para-benzoquinone isolated from Embelia ribes (Burm. f.) of the Myrsinaceae family. It was first discovered to have potent inhibitory activity (IC50 = 4.2 μM) against α-glucosidase in this study. Then, four series of novel embelin derivatives were designed, prepared and evaluated in α-glucosidase inhibition assays. The results show that most of the embelin derivatives synthesised are effective α-glucosidase inhibitors, with IC50 values at the micromolar level, especially 10d, 12d, and 15d, the IC50 values of which are 1.8, 3.3, and 3.6 μM, respectively. Structure-activity relationship (SAR) studies suggest that hydroxyl groups in the 2/5-position of para-benzoquinone are very important, and long-chain substituents in the 3-position are highly preferred. Moreover, the inhibition mechanism and kinetics studies reveal that all of 10d, 12d, 15d, and embelin are reversible and mixed-type inhibitors. Furthermore, docking experiments were carried out to study the interactions between 10d and 15d with α-glucosidase.
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Affiliation(s)
- Xiaole Chen
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, P.R. China
| | - Min Gao
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, P.R. China
| | - Rongchao Jian
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, P.R. China
| | - Weiqian David Hong
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, P.R. China
- International Healthcare Innovation Institute (Jiangmen), Jiangmen, P.R. China
- Department of Chemistry, University of Liverpool, Liverpool, UK
| | - Xiaowen Tang
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, P.R. China
| | - Yuling Li
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, P.R. China
| | - Denggao Zhao
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, P.R. China
- International Healthcare Innovation Institute (Jiangmen), Jiangmen, P.R. China
| | - Kun Zhang
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, P.R. China
- International Healthcare Innovation Institute (Jiangmen), Jiangmen, P.R. China
- School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou, P.R. China
| | - Wenhua Chen
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, P.R. China
- International Healthcare Innovation Institute (Jiangmen), Jiangmen, P.R. China
| | - Xi Zheng
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, P.R. China
- International Healthcare Innovation Institute (Jiangmen), Jiangmen, P.R. China
| | - Zhaojun Sheng
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, P.R. China
- International Healthcare Innovation Institute (Jiangmen), Jiangmen, P.R. China
| | - Panpan Wu
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, P.R. China
- International Healthcare Innovation Institute (Jiangmen), Jiangmen, P.R. China
- School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou, P.R. China
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9
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Zhang X, Cheng B, Liu X, Li Y, Hou J, Chen S, Chen J, Li S. Screening of α‐Glucosidase Inhibitors from
Houttuynia cordata
and Evaluation of the Binding Mechanisms. ChemistrySelect 2020. [DOI: 10.1002/slct.202001657] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Xueli Zhang
- Key Laboratory of Edible Wild Plants Conservation and UtilizationHubei Normal University Huangshi 435002 China
| | - Bingjie Cheng
- Key Laboratory of Edible Wild Plants Conservation and UtilizationHubei Normal University Huangshi 435002 China
| | - Xixia Liu
- Key Laboratory of Edible Wild Plants Conservation and UtilizationHubei Normal University Huangshi 435002 China
- Hubei Engineering Research Center of Special Wild Vegetables Breeding and Comprehensive Utilization TechnologyHubei Normal University Huangshi 435002 China
| | - Yani Li
- Key Laboratory of Edible Wild Plants Conservation and UtilizationHubei Normal University Huangshi 435002 China
- Hubei Engineering Research Center of Special Wild Vegetables Breeding and Comprehensive Utilization TechnologyHubei Normal University Huangshi 435002 China
| | - Jianjun Hou
- Key Laboratory of Edible Wild Plants Conservation and UtilizationHubei Normal University Huangshi 435002 China
- Hubei Engineering Research Center of Special Wild Vegetables Breeding and Comprehensive Utilization TechnologyHubei Normal University Huangshi 435002 China
| | - Sirui Chen
- Key Laboratory of Edible Wild Plants Conservation and UtilizationHubei Normal University Huangshi 435002 China
- Hubei Engineering Research Center of Special Wild Vegetables Breeding and Comprehensive Utilization TechnologyHubei Normal University Huangshi 435002 China
| | - Jiamin Chen
- Key Laboratory of Edible Wild Plants Conservation and UtilizationHubei Normal University Huangshi 435002 China
| | - Shuyue Li
- Key Laboratory of Edible Wild Plants Conservation and UtilizationHubei Normal University Huangshi 435002 China
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10
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Yang JB, Sun H, Ma J, Song YF, Liu Y, Wang Q, Ma SC, Cheng XL, Wei F. New phenolic constituents obtained from Polygonum multiflorum. CHINESE HERBAL MEDICINES 2020; 12:342-346. [PMID: 36119015 PMCID: PMC9476381 DOI: 10.1016/j.chmed.2020.02.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2019] [Revised: 01/10/2020] [Accepted: 02/24/2020] [Indexed: 12/17/2022] Open
Abstract
Objective To isolate the phenolic compounds obtained from the dried roots of Polygonum multiflorum and investigate their pharmacological activities. Methods The chemical constituents were isolated and purified by combining them with a macroporous resin (DM-8), MCI gel, and Sephadex LH-20 and by performing ODS column chromatography. Their structures were elucidated by 1D and 2D NMR analyses, as well as mass spectrometry. The isolated compounds were evaluated to determine their hepatoprotective and α-glucosidase inhibitory activities in vitro. Results Two phenolic compounds, namely, polygonimitin E (1) and polygonimitin F (2), were isolated from the dried roots of P. multiflorum. Compound 2 (10 µmol/L) only showed moderate hepatoprotective activity against N-acetyl-p-aminophenol (APAP)-induced HepG2 cell damage. Unfortunately, these two compounds exhibited no α-glucosidase inhibitory activity. Conclusion Compounds 1 and 2 were new compounds. Compound 2 could be one of the potential hepatoprotective constituents of P. multiflorum.
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11
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Nguyen HX, Nguyen LT, Van Do TN, Le TH, Dang PH, Tran HM, Nguyen NT, Nguyen MTT. A new phenolic acid from the wood of Mangifera gedebe. Nat Prod Res 2019; 35:2579-2582. [PMID: 31642695 DOI: 10.1080/14786419.2019.1680666] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
From the methanol extract of the wood of Mangifera gedebe (Anacardiaceae), we had isolated a new secondary metabolite named gedebic acid (1) and six known compounds (2-7). Their chemical structures were determined by spectroscopic methods as well as comparing with data in the literature. All compounds were tested for α-glucosidase inhibitory activity. Compounds 4-7 showed more potent inhibitory activity, with IC50 values ranging from 45.3 to 142.6 μM, than that of a positive control acarbose (IC50, 214.5 μM).
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Affiliation(s)
- Hai Xuan Nguyen
- Faculty of Chemistry, VNUHCM-University of Science, Hochiminh City, Vietnam
| | - Loc Thanh Nguyen
- Faculty of Chemistry, VNUHCM-University of Science, Hochiminh City, Vietnam
| | - Truong Nhat Van Do
- Faculty of Chemistry, VNUHCM-University of Science, Hochiminh City, Vietnam
| | - Tho Huu Le
- Faculty of Chemistry, VNUHCM-University of Science, Hochiminh City, Vietnam
| | - Phu Hoang Dang
- Faculty of Chemistry, VNUHCM-University of Science, Hochiminh City, Vietnam
| | - Hung Manh Tran
- Faculty of Chemistry, VNUHCM-University of Science, Hochiminh City, Vietnam
| | - Nhan Trung Nguyen
- Faculty of Chemistry, VNUHCM-University of Science, Hochiminh City, Vietnam.,Cancer Research Laboratory, VNUHCM-University of Science, Hochiminh City, Vietnam
| | - Mai Thanh Thi Nguyen
- Faculty of Chemistry, VNUHCM-University of Science, Hochiminh City, Vietnam.,Cancer Research Laboratory, VNUHCM-University of Science, Hochiminh City, Vietnam
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12
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Nguyen NYT, Dang PH, Thien Nguyen VT, Vo TT, Nguyen DAT, Nguyen MDH, Dang PH, Tran QL. Nimbandiolactone-21 and nimbandioloxyfuran, two new 28-norlimonoids from the leaves of Azadirachta indica (Meliaceae). JOURNAL OF ASIAN NATURAL PRODUCTS RESEARCH 2019; 21:867-872. [PMID: 29986612 DOI: 10.1080/10286020.2018.1476498] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/27/2018] [Accepted: 05/10/2018] [Indexed: 06/08/2023]
Abstract
From an EtOAc-soluble fraction of the leaves of Azadirachta indica, two new 28-norlimonoids named nimbandiolactone-21 (1) and nimbandioloxyfuran (2), together with nimbandiolactone-23 (3), were isolated. Their relative structures were elucidated based on NMR spectroscopic interpretation and biosynthetic consideration. Nimbandioloxyfuran (2) and nimbandiolactone-23 (3) showed potent α-glucosidase inhibitory activity, with the IC50 values of 46.2 and 38.7 μM, respectively.
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Affiliation(s)
- Nhi Y Thi Nguyen
- a Faculty of Chemistry, VNUHCM-University of Science , Ho Chi Minh City 700000 , Vietnam
| | - Phu Hoang Dang
- a Faculty of Chemistry, VNUHCM-University of Science , Ho Chi Minh City 700000 , Vietnam
| | | | - Tuan Trong Vo
- b Faculty of Traditional Medicine, University of Medicine and Pharmacy at Ho Chi Minh City , Ho Chi Minh City 700000 , Vietnam
| | - Dao Anh Thi Nguyen
- b Faculty of Traditional Medicine, University of Medicine and Pharmacy at Ho Chi Minh City , Ho Chi Minh City 700000 , Vietnam
| | - Minh Duc Huu Nguyen
- b Faculty of Traditional Medicine, University of Medicine and Pharmacy at Ho Chi Minh City , Ho Chi Minh City 700000 , Vietnam
| | - Phuc Huu Dang
- c Theoretical Physics Research Group, Advanced Institute of Materials Science, Ton Duc Thang University , Ho Chi Minh City 700000 , Vietnam
- d Faculty of Applied Sciences, Ton Duc Thang University , Ho Chi Minh City 700000 , Vietnam
| | - Quan Le Tran
- a Faculty of Chemistry, VNUHCM-University of Science , Ho Chi Minh City 700000 , Vietnam
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13
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Song H, Zhang S, Mou J, Gong G, Huang Y, Ma R, Wang H, Tan Q. Cytotoxic activities against MCF-7 and MDA-MB-231, antioxidant and α-glucosidase inhibitory activities of Trachelospermum jasminoides extracts in vitro. BIOTECHNOL BIOTEC EQ 2019. [DOI: 10.1080/13102818.2019.1694436] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Affiliation(s)
- Hongzhi Song
- Department of Medicinal Chemistry, College of Pharmacy, Guilin Medical University, Guilin, P. R. China
| | - Shengnan Zhang
- Department of Medicinal Chemistry, College of Pharmacy, Guilin Medical University, Guilin, P. R. China
| | - Junfei Mou
- Department of Molecular Medicine, College of Biotechnology, Guilin Medical University, Guilin, P. R. China
| | - Guifen Gong
- Department of Medicinal Chemistry, College of Pharmacy, Guilin Medical University, Guilin, P. R. China
| | - Yan Huang
- Department of Medicinal Chemistry, College of Pharmacy, Guilin Medical University, Guilin, P. R. China
| | - Ruijing Ma
- Department of Medicinal Chemistry, College of Pharmacy, Guilin Medical University, Guilin, P. R. China
| | - Hengshan Wang
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, College of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin, P. R. China
| | - Qingang Tan
- Department of Medicinal Chemistry, College of Pharmacy, Guilin Medical University, Guilin, P. R. China
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Nguyen NYT, Dang PH, Nguyen VTT, Dang PH, Tran QL. A new lactam 28-norlimonoid from the leaves of Azadirachta indica A. Juss. (Meliaceae). Nat Prod Res 2018; 33:1903-1908. [PMID: 29806497 DOI: 10.1080/14786419.2018.1479700] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
Abstract
From an EtOAc-soluble fraction of the leaves of Azadirachta indica, one new lactam 28-norlimonoid named nimbandiolactam-21 (1), together with 2 known limonoids (2 and 3) were isolated. Their relative structures were elucidated based on NMR spectroscopic analysis. Nimbandiolactone-23 (2) showed the most potent α-glucosidase inhibitory activity, with an IC50 value of 38.7 μM. Compound 1 represents the first naturally occurring example of a 28-norlimonoid having the lactam moiety. The plausible biosynthetic pathway for the formation of lactam moiety in 1 was proposed.
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Affiliation(s)
- Nhi Y T Nguyen
- a Faculty of Chemistry , VNUHCM-University of Science , Ho Chi Minh City , Vietnam
| | - Phu H Dang
- a Faculty of Chemistry , VNUHCM-University of Science , Ho Chi Minh City , Vietnam
| | - Van T T Nguyen
- a Faculty of Chemistry , VNUHCM-University of Science , Ho Chi Minh City , Vietnam
| | - Phuc H Dang
- b Theoretical Physics Research Group , Advanced Institute of Materials Science, Ton Duc Thang University , Ho Chi Minh City , Vietnam.,c Faculty of Applied Sciences , Ton Duc Thang University , Ho Chi Minh City , Vietnam
| | - Quan L Tran
- a Faculty of Chemistry , VNUHCM-University of Science , Ho Chi Minh City , Vietnam
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15
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Bouzeko ILT, Ndontsa BL, Mba Nguekeu YM, Awouafack MD, Wong CP, Simo Mpetga JD, Mbouangouere R, Tane P, Morita H. A new alkylbenzoquinone from Embelia rowlandii Gilg. (Myrsinaceae). Nat Prod Res 2018; 33:1909-1915. [DOI: 10.1080/14786419.2018.1479703] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
Affiliation(s)
| | - Blanche Laure Ndontsa
- Laboratory of Natural Products Chemistry, Faculty of Science, Department of Chemistry, University of Dschang , Dschang, Cameroon
| | - Yves Martial Mba Nguekeu
- Laboratory of Natural Products Chemistry, Faculty of Science, Department of Chemistry, University of Dschang , Dschang, Cameroon
| | - Maurice Ducret Awouafack
- Laboratory of Natural Products Chemistry, Faculty of Science, Department of Chemistry, University of Dschang , Dschang, Cameroon
- Institute of Natural Medicine, University of Toyama , Toyama, Japan
| | - Chin Piow Wong
- Institute of Natural Medicine, University of Toyama , Toyama, Japan
| | - James Deke Simo Mpetga
- Laboratory of Natural Products Chemistry, Faculty of Science, Department of Chemistry, University of Dschang , Dschang, Cameroon
| | - Roukayatou Mbouangouere
- Laboratory of Natural Products Chemistry, Faculty of Science, Department of Chemistry, University of Dschang , Dschang, Cameroon
| | - Pierre Tane
- Laboratory of Natural Products Chemistry, Faculty of Science, Department of Chemistry, University of Dschang , Dschang, Cameroon
| | - Hiroyuki Morita
- Institute of Natural Medicine, University of Toyama , Toyama, Japan
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16
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Nguyen HX, Van Do TN, Nguyen MTT, Dang PH, Tho LH, Awale S, Nguyen NT. A New Alkenylphenol from the Propolis of Stingless Bee Trigona minor. Nat Prod Commun 2018. [DOI: 10.1177/1934578x1801300121] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
A new alkenylphenol, 2-hydroxyl-6-(14' Z -nonadecenyl)benzoic acid (1), was isolated from the ethanolic extract of Vietnamese stingless bee propolis Trigona minor (Meliponini, Apidae), together with two known compounds (2 and 3). Their chemical structures were determined by extensive NMR spectroscopic analysis. All compounds were tested for preferential cytotoxicity against the PANC-1 human pancreatic cell line under nutrition-deprived conditions (NDM). Compound 1 exhibited the strongest preferential cytotoxicity, with a PC50 value of 2.4 μM.
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Affiliation(s)
- Hai Xuan Nguyen
- Faculty of Chemistry, VNUHCM–University of Science, 227 Nguyen Van Cu Street, District 5, Ho Chi Minh City Vietnam
| | - Truong Nhat Van Do
- Faculty of Chemistry, VNUHCM–University of Science, 227 Nguyen Van Cu Street, District 5, Ho Chi Minh City Vietnam
| | - Mai Thanh Thi Nguyen
- Faculty of Chemistry, VNUHCM–University of Science, 227 Nguyen Van Cu Street, District 5, Ho Chi Minh City Vietnam
- Cancer Research Laboratory, VNUHCM–University of Science, 227 Nguyen Van Cu Street, District 5, Ho Chi Minh City, Vietnam
| | - Phu Hoang Dang
- Faculty of Chemistry, VNUHCM–University of Science, 227 Nguyen Van Cu Street, District 5, Ho Chi Minh City Vietnam
| | - Le Huu Tho
- Faculty of Chemistry, VNUHCM–University of Science, 227 Nguyen Van Cu Street, District 5, Ho Chi Minh City Vietnam
| | - Suresh Awale
- Division of Natural Drug Discovery, Institute of Natural Medicine, University of Toyama, 2630 Sugitani, Toyama 930-0194, Japan
| | - Nhan Trung Nguyen
- Faculty of Chemistry, VNUHCM–University of Science, 227 Nguyen Van Cu Street, District 5, Ho Chi Minh City Vietnam
- Cancer Research Laboratory, VNUHCM–University of Science, 227 Nguyen Van Cu Street, District 5, Ho Chi Minh City, Vietnam
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17
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Phuong NH, Thuy NTL, Duc NT, Tuyet NTA, Mai NTT, Phung NKP. A New Glycoside and in vitro Evalution of α-Glucosidase Inhibitory Activity of Constituents of the Mangrove Lumnitzera racemosa. Nat Prod Commun 2017. [DOI: 10.1177/1934578x1701201125] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
From Lumnitzera racemosa Willd., a new glycoside, 2- O-galloyl-α-L-rhamnopyranosyl-(3→4’)-3’- O-galloyl-α-L-rhamnopyranose (1), as well as nine known compounds were isolated. Their chemical structures were elucidated by spectroscopic data analysis as well as comparison with the ones in the literature. The evaluation of α-glucosidase inhibitory activity of the extracts and some isolated compounds was measured.
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Affiliation(s)
- Nguyen H. Phuong
- Department of Organic Chemistry, University of Science, National University – Ho Chi Minh City, Dist. 5, Ho Chi Minh City, Vietnam
| | - Nguyen T. L. Thuy
- Department of BioTechnology, Ho Chi Minh City Open University, Dist. 3, Ho Chi Minh City, Vietnam
| | - Nguyen T. Duc
- Department of Organic Chemistry, University of Science, National University – Ho Chi Minh City, Dist. 5, Ho Chi Minh City, Vietnam
| | - Nguyen T. A. Tuyet
- Department of Chemistry, Ho Chi Minh City University of Pedagogy, Dist. 5, Ho Chi Minh City, Vietnam
| | - Nguyen T. T. Mai
- Department of Organic Chemistry, University of Science, National University – Ho Chi Minh City, Dist. 5, Ho Chi Minh City, Vietnam
| | - Nguyen K. P. Phung
- Department of Organic Chemistry, University of Science, National University – Ho Chi Minh City, Dist. 5, Ho Chi Minh City, Vietnam
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18
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Dang PH, Nguyen HH, Truong HT, Do TN, Nguyen HX, Nguyen MT, Abe M, Takagi R, Nguyen NT. Two ring opened oxetane taxoids containing a C-20 benzoyloxy group from the roots of Taxus wallichiana Zucc. Tetrahedron Lett 2017. [DOI: 10.1016/j.tetlet.2017.08.073] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Nguyen NT, Dang PH, Vu NXT, Le TH, Nguyen MTT. Quinoliniumolate and 2H-1,2,3-Triazole Derivatives from the Stems of Paramignya trimera and Their α-Glucosidase Inhibitory Activities: In Vitro and in Silico Studies. JOURNAL OF NATURAL PRODUCTS 2017; 80:2151-2155. [PMID: 28726400 DOI: 10.1021/acs.jnatprod.7b00289] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
From a CHCl3-soluble extract of the stems of Paramignya trimera, two new alkaloids, (E)-2-(prop-1-enyl)-N-methylquinolinium-4-olate (1) and (R)-2-ethylhexyl 2H-1,2,3-triazole-4-carboxylate (2), were isolated. Their structures were elucidated based on the spectroscopic data interpretation. Compound 2 possesses α-glucosidase inhibitory activity, with an IC50 value of 137.9 μM. Molecular docking studies of 1 and 2 with human maltase-glucoamylase (MGAM) were performed for the first time; thus, the 2,3-diH+-1H-1,2,3-triazolium cation (2i) showed good interactions with both MGAM-N (2QMJ) and -C (3TOP) terminal subunits.
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Affiliation(s)
- Nhan T Nguyen
- Faculty of Chemistry, VNUHCM-University of Science , 227 Nguyen Van Cu Street, District 5, Ho Chi Minh City, Vietnam
- Cancer Research Laboratory, Vietnam National University, Ho Chi Minh City , 227 Nguyen Van Cu Street, District 5, Ho Chi Minh City, Vietnam
| | - Phu H Dang
- Faculty of Chemistry, VNUHCM-University of Science , 227 Nguyen Van Cu Street, District 5, Ho Chi Minh City, Vietnam
| | - Ngoc X T Vu
- Faculty of Chemistry, VNUHCM-University of Science , 227 Nguyen Van Cu Street, District 5, Ho Chi Minh City, Vietnam
| | - Tho H Le
- Faculty of Chemistry, VNUHCM-University of Science , 227 Nguyen Van Cu Street, District 5, Ho Chi Minh City, Vietnam
| | - Mai T T Nguyen
- Faculty of Chemistry, VNUHCM-University of Science , 227 Nguyen Van Cu Street, District 5, Ho Chi Minh City, Vietnam
- Cancer Research Laboratory, Vietnam National University, Ho Chi Minh City , 227 Nguyen Van Cu Street, District 5, Ho Chi Minh City, Vietnam
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Dang PH, Nguyen HX, Nguyen HHT, Vo TD, Le TH, Phan THN, Nguyen MTT, Nguyen NT. Lignans from the Roots of Taxus wallichiana and Their α-Glucosidase Inhibitory Activities. JOURNAL OF NATURAL PRODUCTS 2017; 80:1876-1882. [PMID: 28581744 DOI: 10.1021/acs.jnatprod.7b00171] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
From an EtOAc-soluble extract of the roots of Taxus wallichiana, six new (1-6) and 11 known lignans were isolated. The structures of the new compounds were elucidated based on interpretation of spectroscopic data. (+)-7'-epi-Tsugacetal (1) is a rare aryltetralin-type lignan having a cis-orientation of H-7' and H-8'. Compounds 3-6 were identified as the first naturally occurring tetrahydrofuranoid lignans having a cis-orientation of H-7 and H-8. All tested compounds were found to possess α-glucosidase inhibitory activity, with formosanol (9) showing the most potent effect with an IC50 value of 35.3 μM.
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Affiliation(s)
- Phu H Dang
- Faculty of Chemistry, VNUHCM-University of Science , 227 Nguyen Van Cu Street, District 5, Ho Chi Minh City, Vietnam
| | - Hai X Nguyen
- Faculty of Chemistry, VNUHCM-University of Science , 227 Nguyen Van Cu Street, District 5, Ho Chi Minh City, Vietnam
| | - Hanh H T Nguyen
- Faculty of Chemistry, VNUHCM-University of Science , 227 Nguyen Van Cu Street, District 5, Ho Chi Minh City, Vietnam
| | - Thai D Vo
- Faculty of Chemistry, VNUHCM-University of Science , 227 Nguyen Van Cu Street, District 5, Ho Chi Minh City, Vietnam
| | - Tho H Le
- Faculty of Chemistry, VNUHCM-University of Science , 227 Nguyen Van Cu Street, District 5, Ho Chi Minh City, Vietnam
| | - Trong H N Phan
- Faculty of Chemistry, VNUHCM-University of Science , 227 Nguyen Van Cu Street, District 5, Ho Chi Minh City, Vietnam
| | - Mai T T Nguyen
- Faculty of Chemistry, VNUHCM-University of Science , 227 Nguyen Van Cu Street, District 5, Ho Chi Minh City, Vietnam
- Cancer Research Laboratory, Vietnam National University, Ho Chi Minh City , 227 Nguyen Van Cu Street, District 5, Ho Chi Minh City, Vietnam
| | - Nhan T Nguyen
- Faculty of Chemistry, VNUHCM-University of Science , 227 Nguyen Van Cu Street, District 5, Ho Chi Minh City, Vietnam
- Cancer Research Laboratory, Vietnam National University, Ho Chi Minh City , 227 Nguyen Van Cu Street, District 5, Ho Chi Minh City, Vietnam
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Dang PH, Nguyen HX, Duong TTT, Tran TKT, Nguyen PT, Vu TKT, Vuong HC, Phan NHT, Nguyen MTT, Nguyen NT, Awale S. α-Glucosidase Inhibitory and Cytotoxic Taxane Diterpenoids from the Stem Bark of Taxus wallichiana. JOURNAL OF NATURAL PRODUCTS 2017; 80:1087-1095. [PMID: 28240909 DOI: 10.1021/acs.jnatprod.7b00006] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
From a CH2Cl2 extract of the bark of Taxus wallichiana, six new taxoids, wallitaxanes A-F (1-6), were isolated, together with 29 known compounds. The structures of the new compounds were elucidated on the basis of spectroscopic data interpretation. Wallitaxane D (4) was identified as an opened oxetane-type taxoid having the first naturally occurring C(H)-20 acetal group, while wallitaxanes E (5) and F (6) are representative of the rare abeo-taxoid class. The isolated compounds were evaluated for their α-glucosidase inhibitory activity and for cytotoxicity against the HeLa human cervical cancer cell line. In the present work, taxanes were found to exhibit α-glucosidase inhibitory activity for the first time, and wallitaxane A (1) showed the most potent effect, with an IC50 value of 3.6 μM. In turn, 7-epi-taxol (16) and 7-epi-10-deacetyltaxol (17) showed IC50 values of 0.05 and 0.085 nM, respectively, against HeLa cells.
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Affiliation(s)
- Phu Hoang Dang
- Faculty of Chemistry, VNUHCM-University of Science , 227 Nguyen Van Cu Street, District 5, Ho Chi Minh City, Vietnam
| | - Hai Xuan Nguyen
- Faculty of Chemistry, VNUHCM-University of Science , 227 Nguyen Van Cu Street, District 5, Ho Chi Minh City, Vietnam
| | - Truc Thanh Thi Duong
- Faculty of Chemistry, VNUHCM-University of Science , 227 Nguyen Van Cu Street, District 5, Ho Chi Minh City, Vietnam
| | - Thao Kim Thi Tran
- Faculty of Chemistry, VNUHCM-University of Science , 227 Nguyen Van Cu Street, District 5, Ho Chi Minh City, Vietnam
| | - Phuc Thi Nguyen
- Faculty of Chemistry, VNUHCM-University of Science , 227 Nguyen Van Cu Street, District 5, Ho Chi Minh City, Vietnam
| | - Trang Kieu Thi Vu
- Faculty of Chemistry, VNUHCM-University of Science , 227 Nguyen Van Cu Street, District 5, Ho Chi Minh City, Vietnam
| | - Hung Chi Vuong
- Tay Nguyen Herbals JSC , Tu Tra Ward, Don Duong District, Lam Dong Province Vietnam
| | - Nguyen Huu Trong Phan
- Faculty of Chemistry, VNUHCM-University of Science , 227 Nguyen Van Cu Street, District 5, Ho Chi Minh City, Vietnam
| | - Mai Thanh Thi Nguyen
- Faculty of Chemistry, VNUHCM-University of Science , 227 Nguyen Van Cu Street, District 5, Ho Chi Minh City, Vietnam
- Cancer Research Laboratory, Vietnam National University, Ho Chi Minh City , 227 Nguyen Van Cu Street, District 5, Ho Chi Minh City, Vietnam
| | - Nhan Trung Nguyen
- Faculty of Chemistry, VNUHCM-University of Science , 227 Nguyen Van Cu Street, District 5, Ho Chi Minh City, Vietnam
- Cancer Research Laboratory, Vietnam National University, Ho Chi Minh City , 227 Nguyen Van Cu Street, District 5, Ho Chi Minh City, Vietnam
| | - Suresh Awale
- Division of Natural Drug Discovery, Institute of Natural Medicine, University of Toyama , 2630 Sugitani, Toyama 930-0194, Japan
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a-Glucosidase inhibitors extracted from the roots of Polygonum multiflorum Thunb. Fitoterapia 2017; 117:65-70. [DOI: 10.1016/j.fitote.2016.11.009] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2016] [Revised: 11/14/2016] [Accepted: 11/15/2016] [Indexed: 11/17/2022]
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Nguyen HX, Le TC, Do TNV, Le TH, Nguyen NT, Nguyen MTT. α-Glucosidase inhibitors from the bark of Mangifera mekongensis. Chem Cent J 2016; 10:45. [PMID: 27446235 PMCID: PMC4955201 DOI: 10.1186/s13065-016-0193-9] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2016] [Accepted: 07/14/2016] [Indexed: 11/25/2022] Open
Abstract
Background Mangifera mekongensis (Anacardiaceae) is cultivated for its edible fruit and has been used in traditional Vietnamese medicine for its anti-aging properties and for treating diabetes, vermifuge, and dysentery. As part of a search for biologically active compounds with reduction of the rate of glucose absorption, a screening has been initiated to evaluate natural product extracts for the inhibition of enzyme α-glucosidase. A n-hexane extract of the bark of M. mekongensis showed strong α-glucosidase inhibitory activity with IC50 value of 1.71 µg/mL. Thus, the constituents of this plant were examined. Results Two new steroids named mekongsterol A (1) and mekongsterol B (2), were isolated from the n-hexane extract of the bark of M. mekongensis (Anacardiaceae), together with seven known compounds (3–9). Their chemical structures were elucidated on the basis of spectroscopic data. All compounds possessed significant α-glucosidase inhibitory activity in a concentration-dependent manner, except for 3 and 4. Compounds 1, 2, 5–9 showed more potent inhibitory activity, with IC50 values ranging from 1.2 to 112.0 µM, than that of a positive control acarbose (IC50, 214.5 µM). Conclusions These results suggested that the traditional use of the bark of M. mekongensis for the treatment of diabetes diseases in Vietnam may be attributable to the α-glucosidase inhibitory activity of its steroid and cycloartane constituents. Electronic supplementary material The online version of this article (doi:10.1186/s13065-016-0193-9) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Hai Xuan Nguyen
- Faculty of Chemistry, University of Science, Vietnam National University Hochiminh City, 227 Nguyen Van Cu, District 5, Hochiminh City, Vietnam ; Cancer Research Laboratory, Vietnam National University Hochiminh City, 227 Nguyen Van Cu, District 5, Hochiminh City, Vietnam
| | - Tri Cong Le
- Faculty of Chemistry, University of Science, Vietnam National University Hochiminh City, 227 Nguyen Van Cu, District 5, Hochiminh City, Vietnam
| | - Truong Nhat Van Do
- Faculty of Chemistry, University of Science, Vietnam National University Hochiminh City, 227 Nguyen Van Cu, District 5, Hochiminh City, Vietnam
| | - Tho Huu Le
- Faculty of Chemistry, University of Science, Vietnam National University Hochiminh City, 227 Nguyen Van Cu, District 5, Hochiminh City, Vietnam
| | - Nhan Trung Nguyen
- Faculty of Chemistry, University of Science, Vietnam National University Hochiminh City, 227 Nguyen Van Cu, District 5, Hochiminh City, Vietnam ; Cancer Research Laboratory, Vietnam National University Hochiminh City, 227 Nguyen Van Cu, District 5, Hochiminh City, Vietnam
| | - Mai Thanh Thi Nguyen
- Faculty of Chemistry, University of Science, Vietnam National University Hochiminh City, 227 Nguyen Van Cu, District 5, Hochiminh City, Vietnam ; Cancer Research Laboratory, Vietnam National University Hochiminh City, 227 Nguyen Van Cu, District 5, Hochiminh City, Vietnam
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