1
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Nakayama T, Uno B. Concerted Two-Proton-Coupled Electron Transfer from Piceatannol to Electrogenerated Superoxide in N, N-Dimethylformamide. ACS OMEGA 2024; 9:24889-24898. [PMID: 38882073 PMCID: PMC11171091 DOI: 10.1021/acsomega.4c01742] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/22/2024] [Revised: 05/01/2024] [Accepted: 05/24/2024] [Indexed: 06/18/2024]
Abstract
The reactivity of 4-[(E)-2-(3,5-dihydroxyphenyl)ethenyl]benzene-1,2-diol (piceatannol) toward electrochemically generated superoxide radical anion (O2 •-) was investigated using electrochemistry and in situ controlled-potential electrolytic electron spin resonance (ESR) measurements in N,N-dimethylformamide with density functional theory (DFT) calculations. The quasireversible cyclic voltammogram of dioxygen/O2 •-, modified in the presence of piceatannol, indicated that the electrogenerated O2 •- was scavenged by piceatannol via proton-coupled electron transfer. Differences in the reactivities of piceatannol and 5-[(E)-2-(4-hydroxyphenyl)ethen-1-yl]benzene-1,3-diol (trans-resveratrol) toward O2 •-, originating from the presence of the benzene-1,2-diol (catechol) moiety, were observed in the voltammograms and ESR measurements. The electrochemical and computational results show that the reaction mechanism is a concerted two-proton-coupled electron transfer (2PCET) via the catechol moiety of piceatannol. The stilbene moiety of piceatannol kinetically promotes 2PCET via its catechol moiety. These findings indicate that piceatannol is a better O2 •- scavenger than catechol and trans-resveratrol.
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Affiliation(s)
- Tatsushi Nakayama
- Gifu Pharmaceutical University, 1-25-4 Daigaku-nishi, Gifu 501-1196, Japan
| | - Bunji Uno
- Gifu University of Medical Science, 4-3-3 Nijigaoka, Kani, Gifu 509-0923, Japan
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2
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Balk M, Sofia P, Neffe AT, Tirelli N. Lignin, the Lignification Process, and Advanced, Lignin-Based Materials. Int J Mol Sci 2023; 24:11668. [PMID: 37511430 PMCID: PMC10380785 DOI: 10.3390/ijms241411668] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2023] [Revised: 07/10/2023] [Accepted: 07/12/2023] [Indexed: 07/30/2023] Open
Abstract
At a time when environmental considerations are increasingly pushing for the application of circular economy concepts in materials science, lignin stands out as an under-used but promising and environmentally benign building block. This review focuses (A) on understanding what we mean with lignin, i.e., where it can be found and how it is produced in plants, devoting particular attention to the identity of lignols (including ferulates that are instrumental for integrating lignin with cell wall polysaccharides) and to the details of their coupling reactions and (B) on providing an overview how lignin can actually be employed as a component of materials in healthcare and energy applications, finally paying specific attention to the use of lignin in the development of organic shape-memory materials.
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Affiliation(s)
- Maria Balk
- Institute of Functional Materials for Sustainability, Helmholtz-Zentrum Hereon, Kantstrasse 55, 14513 Teltow, Germany
| | - Pietro Sofia
- Laboratory of Polymers and Biomaterials, Fondazione Istituto Italiano di Tecnologia, Via Morego 30, 16163 Genova, Italy
- The Open University Affiliated Research Centre at the Istituto Italiano di Tecnologia (ARC@IIT), Via Morego 30, 16163 Genova, Italy
| | - Axel T Neffe
- Institute of Functional Materials for Sustainability, Helmholtz-Zentrum Hereon, Kantstrasse 55, 14513 Teltow, Germany
| | - Nicola Tirelli
- Laboratory of Polymers and Biomaterials, Fondazione Istituto Italiano di Tecnologia, Via Morego 30, 16163 Genova, Italy
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3
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Yao L, Cai W, Chen S, Wang A, Wang X, Zhao C, Shou C, Jia Y. Design, syntheses and biological evaluation of natural product aiphanol derivatives and analogues: discovery of potent anticancer agents. Bioorg Med Chem Lett 2023; 90:129326. [PMID: 37182611 DOI: 10.1016/j.bmcl.2023.129326] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2023] [Revised: 05/03/2023] [Accepted: 05/09/2023] [Indexed: 05/16/2023]
Abstract
The natural product aiphanol (1) is one of the substances with anticancer biological activity isolated from traditional Chinese medicines (TCM) Smilax glabra Roxb. (Tufuling). Our recent research found that aiphanol could suppress angiogenesis and tumor growth by dual-blocking VEGF/VEGFRs and COX2 signal pathway. In this study, four series of 40 aiphanol derivatives and analogues were designed, synthesized and evaluated for their anticancer activity. Among them, the analogues 10j and 14c exhibited the most potent inhibition and broad-spectrum antiproliferative activity toward nine tumor cell lines. The IC50 values of the analogues 10j and 14c range from 0.81 to 10 μmol/L which up to 80-fold vs. parent compound aiphanol. The structure-activity relationship (SAR) studies indicated that the substrate at 7-position of benzo 1,4-dioxane is very crucial for anticancer activity. Molecular docking indicated that the compound 14c (ent-14c) tightly binds to VEGFR2 and COX2, respectively. Therefore, compounds 10j and 14c could be promising candidates for the development of anticancer agents in the future.
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Affiliation(s)
- Licheng Yao
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, and Chemical Biology Center, Peking University, Beijing 100191, China
| | - Wenqing Cai
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, and Chemical Biology Center, Peking University, Beijing 100191, China
| | - Shanmei Chen
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Department of Biochemistry and Molecular Biology, Peking University Cancer Hospital & Institute, Beijing 100142, China
| | - Aidan Wang
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, and Chemical Biology Center, Peking University, Beijing 100191, China
| | - Xin Wang
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, and Chemical Biology Center, Peking University, Beijing 100191, China
| | - Chuanke Zhao
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Department of Biochemistry and Molecular Biology, Peking University Cancer Hospital & Institute, Beijing 100142, China
| | - Chengchao Shou
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Department of Biochemistry and Molecular Biology, Peking University Cancer Hospital & Institute, Beijing 100142, China.
| | - Yanxing Jia
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, and Chemical Biology Center, Peking University, Beijing 100191, China.
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4
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Kim H, Rencoret J, Elder TJ, del Río JC, Ralph J. Biomimetic oxidative copolymerization of hydroxystilbenes and monolignols. SCIENCE ADVANCES 2023; 9:eade5519. [PMID: 36888720 PMCID: PMC9995074 DOI: 10.1126/sciadv.ade5519] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/20/2022] [Accepted: 02/07/2023] [Indexed: 06/18/2023]
Abstract
Hydroxystilbenes are a class of polyphenolic compounds that behave as lignin monomers participating in radical coupling reactions during the lignification. Here, we report the synthesis and characterization of various artificial copolymers of monolignols and hydroxystilbenes, as well as low-molecular-mass compounds, to obtain the mechanistic insights into their incorporation into the lignin polymer. Integrating the hydroxystilbenes, resveratrol and piceatannol, into monolignol polymerization in vitro, using horseradish peroxidase to generate phenolic radicals, produced synthetic lignins [dehydrogenation polymers (DHPs)]. Copolymerization of hydroxystilbenes with monolignols, especially sinapyl alcohol, by in vitro peroxidases notably improved the reactivity of monolignols and resulted in substantial yields of synthetic lignin polymers. The resulting DHPs were analyzed using two-dimensional NMR and 19 synthesized model compounds to confirm the presence of hydroxystilbene structures in the lignin polymer. The cross-coupled DHPs confirmed both resveratrol and piceatannol as authentic monomers participating in the oxidative radical coupling reactions during polymerization.
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Affiliation(s)
- Hoon Kim
- Department of Energy Great Lakes Bioenergy Research Center, Wisconsin Energy Institute, University of Wisconsin-Madison, Madison, WI 53726, USA
| | - Jorge Rencoret
- Instituto de Recursos Naturales y Agrobiología de Sevilla (IRNAS), CSIC, Avenida de la Reina Mercedes, 10, 41012, Seville, Spain
| | - Thomas J. Elder
- USDA-Forest Service, Southern Research Station 521 Devall Dr. Auburn, AL 36849, USA
| | - José C. del Río
- Instituto de Recursos Naturales y Agrobiología de Sevilla (IRNAS), CSIC, Avenida de la Reina Mercedes, 10, 41012, Seville, Spain
| | - John Ralph
- Department of Energy Great Lakes Bioenergy Research Center, Wisconsin Energy Institute, University of Wisconsin-Madison, Madison, WI 53726, USA
- Department of Biochemistry, University of Wisconsin-Madison, Madison, WI 53706, USA
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5
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Chen SM, Zhao CK, Yao LC, Wang LX, Ma YN, Meng L, Cai SQ, Liu CY, Qu LK, Jia YX, Shou CC. Aiphanol, a multi-targeting stilbenolignan, potently suppresses mouse lymphangiogenesis and lymphatic metastasis. Acta Pharmacol Sin 2023; 44:189-200. [PMID: 35778489 PMCID: PMC9813257 DOI: 10.1038/s41401-022-00940-4] [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: 01/24/2022] [Accepted: 06/07/2022] [Indexed: 01/18/2023] Open
Abstract
The high incidence of lymphatic metastasis is closely related to poor prognosis and mortality in cancers. Potent inhibitors to prevent pathological lymphangiogenesis and lymphatic spread are urgently needed. The VEGF-C-VEGFR3 pathway plays a vital role in driving lymphangiogenesis and lymph node metastasis. In addition, COX2 in tumor cells and tumor-associated macrophages (TAMs) facilitates lymphangiogenesis. We recently reported that aiphanol, a natural stilbenolignan, attenuates tumor angiogenesis by repressing VEGFR2 and COX2. In this study, we evaluated the antilymphangiogenic and antimetastatic potency of aiphanol using in vitro, ex vivo and in vivo systems. We first demonstrated that aiphanol directly bound to VEGFR3 and blocked its kinase activity with an half-maximal inhibitory concentration (IC50) value of 0.29 μM in an in vitro ADP-GloTM kinase assay. Furthermore, we showed that aiphanol (7.5-30 μM) dose-dependently counteracted VEGF-C-induced proliferation, migration and tubular formation of lymphatic endothelial cells (LECs), which was further verified in vivo. VEGFR3 knockdown markedly mitigated the inhibitory potency of aiphanol on lymphangiogenesis. In 4T1-luc breast tumor-bearing mice, oral administration of aiphanol (5 and 30 mg· kg-1 ·d-1) dose-dependently decreased lymphatic metastasis and prolonged survival time, which was associated with impaired lymphangiogenesis, angiogenesis and, interestingly, macrophage infiltration. In addition, we found that aiphanol decreased the COX2-dependent secretion of PGE2 and VEGF-C from tumor cells and macrophages. These results demonstrate that aiphanol is an appealing agent for preventing lymphangiogenesis and lymphatic dissemination by synergistically targeting VEGFR3 and inhibiting the COX2-PGE2-VEGF-C signaling axis.
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Affiliation(s)
- Shan-Mei Chen
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Department of Biochemistry and Molecular Biology, Peking University Cancer Hospital & Institute, Beijing, 100142, China
| | - Chuan-Ke Zhao
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Department of Biochemistry and Molecular Biology, Peking University Cancer Hospital & Institute, Beijing, 100142, China.
| | - Li-Cheng Yao
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing, 100191, China
| | - Li-Xin Wang
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Department of Biochemistry and Molecular Biology, Peking University Cancer Hospital & Institute, Beijing, 100142, China
| | - Yu-Nan Ma
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Department of Laboratory Animal, Peking University Cancer Hospital & Institute, Beijing, 100142, China
| | - Lin Meng
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Department of Biochemistry and Molecular Biology, Peking University Cancer Hospital & Institute, Beijing, 100142, China
| | - Shao-Qing Cai
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing, 100191, China
| | - Cai-Yun Liu
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Department of Biochemistry and Molecular Biology, Peking University Cancer Hospital & Institute, Beijing, 100142, China
| | - Li-Ke Qu
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Department of Biochemistry and Molecular Biology, Peking University Cancer Hospital & Institute, Beijing, 100142, China.
| | - Yan-Xing Jia
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing, 100191, China.
| | - Cheng-Chao Shou
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Department of Biochemistry and Molecular Biology, Peking University Cancer Hospital & Institute, Beijing, 100142, China.
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6
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Ntalouka F, Tsirivakou A. Luteolin: A promising natural agent in management of pain in chronic conditions. FRONTIERS IN PAIN RESEARCH 2023; 4:1114428. [PMID: 36937566 PMCID: PMC10016360 DOI: 10.3389/fpain.2023.1114428] [Citation(s) in RCA: 17] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2022] [Accepted: 02/13/2023] [Indexed: 03/04/2023] Open
Abstract
Pain due to chronic conditions is a frequent and insufficiently addressed problem. Current drug options for pain management (either in cases of chronic inflammatory conditions or neuropathy) do not adequately treat pain. Moreover, they are associated with important adverse events in long term use. Luteolin is a flavonoid widely present in the plant kingdom and its sources have been assembled in a comprehensive list of this paper. Luteolin has shown in several research studies a range of pharmacological properties; anti-inflammatory, antioxidant, neuroprotective, and analgesic. In this article, we summarize the effects and potential benefits from introducing luteolin as an adjuvant agent in established protocols for pain management. We review the most indicative in vivo and in vitro evidence of how luteolin can target the molecular pathways involved in pathogenesis of chronic inflammatory and neuropathic pain. The data reviewed strongly support luteolin's promising benefits in pain management and raise the need for further clinical trials that can establish its role in clinical practice.
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Benabbes R, Ouahhoud S, Moueqqit M, Addi M, Hano C, Delporte C, Nacoulma AP, Megalizzi V. The Major Stilbene Compound Accumulated in the Roots of a Resistant Variety of Phoenix dactylifera L. Activates Proteasome for a Path in Anti-Aging Strategy. Cells 2022; 12:cells12010071. [PMID: 36611864 PMCID: PMC9818208 DOI: 10.3390/cells12010071] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2022] [Revised: 12/14/2022] [Accepted: 12/20/2022] [Indexed: 12/28/2022] Open
Abstract
The main objective of the present study is to estimate, through differential analysis, various biological activities of total phenolics content in alcoholic extracts of three date palm varieties sensitive or resistant to Fusarium oxysporum. sp Albidinis. Here, stilbene products with antioxidant and bioactive capacities were evidenced in resistant variety Taabdount (TAAR). Furthermore, the methanolic fraction of the TAAR-resistant date palm variety contains a significant product, determined by LC-MS/MS and 1H, 13C NMR, belonging to the family of hydroxystilbenes, which exhibits antioxidant capacities, inhibits the mushroom tyrosinase activity, and activates and exerts a protective effect on hypochlorite-induced damage in 20S proteasome of human dermal fibroblast aged cells. Altogether, the present results indicate that hydroxystilbene present in resistant Phoenix dactylifera L. should be studied to understand the way that the stilbene could exert anti-aging ability.
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Affiliation(s)
- Redouane Benabbes
- Laboratory of Bioresources, Biotechnology, Ethnopharmacology and Health, Faculty of Sciences, Université Mohamed Premier, BV Mohammed VI BP 717, Oujda 60000, Morocco
| | - Sabir Ouahhoud
- Laboratory of Bioresources, Biotechnology, Ethnopharmacology and Health, Faculty of Sciences, Université Mohamed Premier, BV Mohammed VI BP 717, Oujda 60000, Morocco
| | - Mohammed Moueqqit
- Laboratory of Bioresources, Biotechnology, Ethnopharmacology and Health, Faculty of Sciences, Université Mohamed Premier, BV Mohammed VI BP 717, Oujda 60000, Morocco
| | - Mohamed Addi
- Laboratory of Improvement of Agricultural Production, Biotechnology and Environment, Department of Biology, Faculty of Sciences, Université Mohamed Premier, Oujda 60000, Morocco
| | - Christophe Hano
- Laboratoire de Biologie des Ligneux et des Grandes Cultures, INRA USC1328, Orleans University, CEDEX 2, 45067 Orléans, France
- Correspondence:
| | - Cédric Delporte
- Microbiology, Bioorganic and Macromolecular Chemistry, Faculty of Pharmacy, Université Libre de Bruxelles, Bvd du Triomphe, 1050 Brussels, Belgium
| | - Aminata P. Nacoulma
- The Unit Pharmacognosy, Bioanalysis & Drug Discovery (PBDD), Department of Drug Research and Development, Faculty of Pharmacy, Université Libre de Bruxelles, Bvd du Triomphe, 1050 Brussels, Belgium
| | - Véronique Megalizzi
- Microbiology, Bioorganic and Macromolecular Chemistry, Faculty of Pharmacy, Université Libre de Bruxelles, Bvd du Triomphe, 1050 Brussels, Belgium
- The Unit Pharmacognosy, Bioanalysis & Drug Discovery (PBDD), Department of Drug Research and Development, Faculty of Pharmacy, Université Libre de Bruxelles, Bvd du Triomphe, 1050 Brussels, Belgium
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8
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Kamarehei F, Mehdiabadi M, Naderi F. Antibacterial effects of natural compounds on biofilm formation of Streptococcus mutans. Clin Exp Dent Res 2022; 8:1426-1433. [PMID: 36281582 PMCID: PMC9760147 DOI: 10.1002/cre2.673] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2022] [Revised: 09/19/2022] [Accepted: 09/22/2022] [Indexed: 11/06/2022] Open
Abstract
Streptococcus mutans is the main cariogenic pathogen in the oral cavity, considered to contribute toward oral diseases. S. mutans is predominantly entrapped in plaque biofilms. OBJECTIVES In this study, we surveyed the antibacterial activity of natural compounds in terms of the biofilm production of S. mutans. MATERIAL AND METHODS We extracted the studies related to natural compounds affected on S. mutans biofilm from different databases. RESULTS Disruption of S. mutans viability in biofilms by a potent new pharmacological factor could inhibit and remove cavities. Various antibacterial agents are needed to destroy biofilms that remove both pathogens and commensal bacteria, and also exert inhibitory effects on many bacterial species. CONCLUSIONS An effective therapeutic agent for dental caries has to be capable of removing pathogens and their biofilms. Specific virulence attributes of S. mutans exist; hence, natural compounds that have excellent properties to combat such pathogens need to be selected.
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Affiliation(s)
- Farideh Kamarehei
- Department of Microbiology, Faculty of MedicineHamadan University of Medical SciencesHamadanIran
| | - Mohsen Mehdiabadi
- Department of Pediatric Dentistry, Faculty of DentistryHamadan University of Medical SciencesHamadanIran
| | - Fariba Naderi
- Department of Pediatric Dentistry, Faculty of DentistryHamadan University of Medical SciencesHamadanIran
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9
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Aiphanol, a native compound, suppresses angiogenesis via dual-targeting VEGFR2 and COX2. Signal Transduct Target Ther 2021; 6:413. [PMID: 34862391 PMCID: PMC8642386 DOI: 10.1038/s41392-021-00739-5] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2021] [Revised: 05/06/2021] [Accepted: 05/10/2021] [Indexed: 11/08/2022] Open
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10
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Su X, Wu Y, Wu M, Lu J, Jia S, He X, Liu S, Zhou Y, Xing H, Xue Y. Regioisomers Salviprolin A and B, Unprecedented Rosmarinic Acid Conjugated Dinorditerpenoids from Salvia przewalskii Maxim. Molecules 2021; 26:6955. [PMID: 34834049 PMCID: PMC8618536 DOI: 10.3390/molecules26226955] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2021] [Revised: 11/07/2021] [Accepted: 11/11/2021] [Indexed: 11/16/2022] Open
Abstract
Salvia przewalskii Maxim is a perennial plant from the genus Salvia (family Lamiaceae). The roots of S. przewalskii were long used as a traditional herb to treat blood circulation related illnesses in China. As part of our continuing interest in polycyclic natural products from medicinal plants, two unprecedented adducts comprised of a dinor-diterpenoid and a 9'-nor-rosmarinic acid derivative, linked by a 1,4-benzodioxane motif (1 and 2), were isolated from the roots of S. przewalskii. Their structures were established by extensive spectroscopic approaches including 1D, 2D NMR, and HRFABMS. Their cytotoxic activities against five human tumor cell lines were evaluated.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | - Yongbo Xue
- School of Pharmaceutical Sciences (Shenzhen), Sun Yat-sen University, Shenzhen 518107, China; (X.S.); (Y.W.); (M.W.); (J.L.); (S.J.); (X.H.); (S.L.); (Y.Z.); (H.X.)
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11
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Lv TM, Guo R, Yan ZY, Du YQ, Lin B, Huang XX, Song SJ. Structure elucidation of a new terpenylated coumarin with the combination of CASE algorithms and DFT/NMR approach. JOURNAL OF ASIAN NATURAL PRODUCTS RESEARCH 2021; 23:982-991. [PMID: 32820653 DOI: 10.1080/10286020.2020.1804377] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/09/2020] [Revised: 07/28/2020] [Accepted: 07/28/2020] [Indexed: 06/11/2023]
Abstract
One new terpenylated coumarin ailanthuscoumarin was isolated from the root barks of Ailanthus altissima (Mill.) Swingle. The high oxidation of the compound led to the difficulty of structure elucidation by 2D-NMR spectra. Its structure was determined with the aid of computer-assisted structure elucidation (CASE) expert systems and Gauge-independent atomic orbital (GIAO) NMR calculations. The absolute configuration of ailanthuscoumarin was determined by the comparison between the experimental and calculated electronic circular dichroism (ECD) spectra. The anti-hepatoma activity of ailanthuscoumarin against two human hepatoma cells (Hep3B, HepG2) was also reported.
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Affiliation(s)
- Tian-Ming Lv
- School of Traditional Chinese Materia Medica, Key Laboratory of Structure-Based Drug Design and Discovery, Ministry of Education, Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Rui Guo
- School of Traditional Chinese Materia Medica, Key Laboratory of Structure-Based Drug Design and Discovery, Ministry of Education, Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Zhi-Yang Yan
- School of Traditional Chinese Materia Medica, Key Laboratory of Structure-Based Drug Design and Discovery, Ministry of Education, Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Ye-Qing Du
- School of Traditional Chinese Materia Medica, Key Laboratory of Structure-Based Drug Design and Discovery, Ministry of Education, Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Bin Lin
- School of Pharmaceutical Engineering, Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Xiao-Xiao Huang
- School of Traditional Chinese Materia Medica, Key Laboratory of Structure-Based Drug Design and Discovery, Ministry of Education, Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Shao-Jiang Song
- School of Traditional Chinese Materia Medica, Key Laboratory of Structure-Based Drug Design and Discovery, Ministry of Education, Shenyang Pharmaceutical University, Shenyang 110016, China
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12
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Pan L, Fu L, Jia XG, Jia XY, Zhang T, Zou ZM. New stilbenoligan and flavonoid from the roots of Caragana stenophylla Pojark. and their anti-inflammatory activity. JOURNAL OF ASIAN NATURAL PRODUCTS RESEARCH 2021; 23:627-636. [PMID: 33985389 DOI: 10.1080/10286020.2021.1918119] [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: 02/21/2021] [Accepted: 04/11/2021] [Indexed: 06/12/2023]
Abstract
A phytochemical investigation on the 80% ethanol extract of the roots of Caragana stenophylla Pojark. resulted in the isolation of 20 compounds, including two new ones, named kompasinol P (2) and 3,5,7,2',3'-pentahydroxy-4'-methoxyisoflavanone (3). Among them, a pair of enantiomers, (7S, 8 R, 7'R, 8'S)-kompasinol A (1a) and (7 R, 8S, 7'S, 8'R)-kompasinol A (1b), were successfully separated by the chiral-phase HPLC resolution for the first time. The absolute configurations of 1a and 1b were determined by the experimental and calculated electronic circular dichroism (ECD) data. 15 isolates were evaluated for their anti-inflammatory activity via inhibiting the production of nitric oxide (NO) in lipopolysaccharide (LPS)-stimulated murine macrophage RAW 264.7 cells. Compounds 1a/1b, 6, 7, 9, 10, 12, 14, and 16-18 showed moderate inhibition with IC50 values ranging from 11.45 to 68.54 μM.
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Affiliation(s)
- Lan Pan
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100193, China
| | - Lu Fu
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100193, China
| | - Xiao-Guang Jia
- Xinjiang Institute of Chinese Materia Medica and Ethnodrug, Urumqi 830002, China
| | - Xin-Yue Jia
- Xinjiang Institute of Chinese Materia Medica and Ethnodrug, Urumqi 830002, China
| | - Tao Zhang
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100193, China
| | - Zhong-Mei Zou
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100193, China
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13
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Cui J, Jia J. Natural COX-2 Inhibitors as Promising Anti-inflammatory Agents: An Update. Curr Med Chem 2021; 28:3622-3646. [PMID: 32942970 DOI: 10.2174/0929867327999200917150939] [Citation(s) in RCA: 38] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2020] [Revised: 08/09/2020] [Accepted: 08/13/2020] [Indexed: 12/15/2022]
Abstract
COX-2, a key enzyme that catalyzed the rate-limiting steps in the conversion of arachidonic acid to prostaglandins, played a pivotal role in the inflammatory process. Different from other family members, COX-2 was barely detectable in normal physiological conditions and highly inducible during the acute inflammatory response of human bodies to injuries or infections. Therefore, the therapeutic utilization of selective COX-2 inhibitors has already been considered as an effective approach for the treatment of inflammation with diminished side effects. Currently, both traditional and newer NSAIDs are the commonly prescribed medications that treat inflammatory diseases by targeting COX-2. However, due to the cardiovascular side-effects of the NSAIDs, finding reasonable alternatives for these frequently prescribed medicines are a hot spot in medicinal chemistry research. Naturallyoccurring compounds have been reported to inhibit COX-2, thereby possessing beneficial effects against inflammation and certain cell injury. The review mainly concentrated on recently identified natural products and derivatives as COX-2 inhibitors, the characteristics of their structural core scaffolds, their anti-inflammatory effects, molecular mechanisms for enzymatic inhibition, and related structure-activity relationships. According to the structural features, the natural COX-2 inhibitors were mainly divided into the following categories: natural phenols, flavonoids, stilbenes, terpenoids, quinones, and alkaloids. Apart from the anti-inflammatory activities, a few dietary COX-2 inhibitors from nature origin also exhibited chemopreventive effects by targeting COX-2-mediated carcinogenesis. The utilization of these natural remedies in future cancer prevention was also discussed. In all, the survey on the characterized COX-2 inhibitors from natural sources paves the way for the further development of more potent and selective COX-2 inhibitors in the future.
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Affiliation(s)
- Jiahua Cui
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Jinping Jia
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China
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Cetin A. In silico studies on stilbenolignan analogues as SARS-CoV-2 Mpro inhibitors. Chem Phys Lett 2021; 771:138563. [PMID: 33776065 PMCID: PMC7983322 DOI: 10.1016/j.cplett.2021.138563] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2021] [Revised: 03/17/2021] [Accepted: 03/18/2021] [Indexed: 12/16/2022]
Abstract
COVID-19, a new strain of coronavirus family, was identified at the end of 2019 in China. The COVID-19 virus spread rapidly all over the world. Scientists strive to find virus-specific antivirals for the treatment of COVID-19. The present study reports a molecular docking study of the stilbenolignans and SARS-CoV-2 main protease (SARS-CoV-2 Mpro) inhibitors. The detailed interactions between the stilbenolignan analogues and SARS-CoV-2 Mpro inhibitors were determined as hydrophobic bonds, hydrogen bonds and electronic bonds, inhibition activity, ligand efficiency, bonding type and distance and etc. The binding energies of the stilbenolignan analogues were obtained from the molecular docking of SARS-CoV-2 Mpro. Lehmbachol D, Maackolin, Gnetucleistol, Gnetifolin F, Gnetofuran A and Aiphanol were found to be -7.7, -8.2, -7.3, -8.5, -8.0 and -7.3 kcal/mol, respectively. Osirus, Molinspiration and SwissADME chemoinformatic tools were used to examine ADMET properties, pharmacokinetic parameters and toxicological characteristics of the stilbenolignan analogues. All analogues obey the Lipinski's rule of five. Furthermore, stilbenolignan analogues were studied to predict their binding affinities against SARS-CoV-2 Mpro using molecular modeling and simulation techniques, and the binding free energy calculations of all complexes were calculated using the molecular mechanics/Poisson-Boltzmann surface area (MM-PBSA) method. With the data presented here it has been observed that these analogues may be a good candidate for SARS-CoV-2 Mpro in vivo studies, so more research can be done on stilbenolignan analogues.
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Ghanta P, Doble M, Ramaiah B. Alkaloids of Adhatoda vasica Nees. as potential inhibitors of cyclooxygenases - an in-silico study. J Biomol Struct Dyn 2021; 40:7245-7255. [PMID: 33715610 DOI: 10.1080/07391102.2021.1895887] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Eicosanoid pathways play a crucial role in the progression and resolution of inflammation. NSAIDs act as anti-inflammatory agents by inhibiting both the isoforms of cyclooxygenases (COXs) whereas, COXIBs act as specific COX-2 inhibitors. Excessive usage of the same is linked with gastrointestinal bleeding and increased cardiovascular risk, respectively. The current in-silico study was aimed at evaluating the potential of major alkaloids of A. vasica (vasicine (VAS), vasicinone (VAE), and Deoxyvasicine (DOV)) as inhibitors of COXs. The results of the computed binding energy (ΔG) indicate that Celecoxib (CEL), DOV, and VAS have a higher affinity to COX-2, while VAE has a higher affinity to COX-1, and Mefenamic acid (MEF) was not selective. Among the alkaloids, VAE exhibited the best ΔG (of -8.2 kcal/mol) with COX-1, while VAS exhibited the best ΔG (of -8.2 kcal/mol) with COX-2. This was comparable to the ΔG exhibited by Mefenamic acid (-8.7 kcal/mol with both the COXs). With their potential to remain gastroprotective while having the ability to inhibit enzymes of both the prostaglandin and leukotriene pathways, the alkaloids of A. vasica could be promising leads for the design of Eicosanoid pathway modulators/inhibitors.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Prasanth Ghanta
- Department of Biosciences, Sri Sathya Sai Institute of Higher Learning, Puttaparthi, India
| | - Mukesh Doble
- Bio-engineering and Drug Design Lab, Department of Biotechnology, Bhupat and Jyoti Mehta School of Biosciences, Indian Institute of Technology - Madras, Chennai, India
| | - Basavaraju Ramaiah
- Department of Biosciences, Sri Sathya Sai Institute of Higher Learning, Puttaparthi, India
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Cheng L, Guo DL, Zhang MS, Linghu L, Fu SB, Deng Y, He YQ, Xiao SJ. Dihydrophenanthrofurans and bisbibenzyl derivatives from the stems of Dendrobium nobile. Fitoterapia 2020; 143:104586. [DOI: 10.1016/j.fitote.2020.104586] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2020] [Revised: 03/29/2020] [Accepted: 03/30/2020] [Indexed: 01/16/2023]
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17
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Wan J, Zang Y, Xiao DA, Li N, Li J, Jin ZX, Chen DL, Xiong J, Li J, Hu JF. Stewartiacids A-N, C-23 carboxylated triterpenoids from Chinese Stewartia and their inhibitory effects against ATP-citrate lyase and NF-κB. RSC Adv 2020; 10:3343-3356. [PMID: 35497717 PMCID: PMC9048753 DOI: 10.1039/c9ra09542j] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2019] [Accepted: 01/10/2020] [Indexed: 11/30/2022] Open
Abstract
Fourteen previously undescribed naturally occurring C-23 carboxylated triterpenoids, stewartiacids A-N (1-14), were isolated and characterized from the twigs and leaves of the ornamental and medicinal plant Stewartia sinensis (Chinese Stewartia), a 'vulnerable' species endemic to China. The new structures were elucidated on the basis of spectroscopic data, single crystal X-ray diffraction, and electronic circular dichroism (ECD) analyses. Stewartiacids A (1) and B (2) are isoursenol derivatives. Stewartiacid C (3) is a 12-oxo-γ-amyrin analogue. Both isoursenol and γ-amyrin derivatives are quite rare in nature. Stewartiacids D (4) and E (5) are 13,27-cycloursane-type compounds. Stewartiacids K (11) and L (12) are ursane-type triterpene and phenylpropanol adducts built through a 1,4-dioxane ring, which are also seldom reported in the literature. The rest are common C-23 carboxylated ursane-type (6-10) and oleanane-type (13, 14) pentacyclic triterpenoids. Stewartiacids G (7), K (11), and L (12) showed moderate inhibitory effects against ATP-citrate lyase (ACL), with IC50 values of 12.5, 2.8, and 10.6 μM, respectively. Stewartiacid K (11) also exhibited moderate inhibition (IC50: 16.8 μM) of NF-κB.
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Affiliation(s)
- Jiang Wan
- Institute of Natural Medicine and Health Products, School of Advanced Study, Zhejiang Provincial Key Laboratory of Plant Ecology and Conservation, Taizhou University Taizhou 318000 Zhejiang PR China
- School of Pharmacy, Fudan University No. 826 Zhangheng Road Shanghai 201203 PR China +86-21-51980172 +86-21-51980172
| | - Yi Zang
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences Shanghai 201203 PR China
| | - Dao-An Xiao
- College of Chemistry and Bioengineer, Yichun University Yichun 336000 PR China
| | - Na Li
- Institute of Natural Medicine and Health Products, School of Advanced Study, Zhejiang Provincial Key Laboratory of Plant Ecology and Conservation, Taizhou University Taizhou 318000 Zhejiang PR China
| | - Junmin Li
- Institute of Natural Medicine and Health Products, School of Advanced Study, Zhejiang Provincial Key Laboratory of Plant Ecology and Conservation, Taizhou University Taizhou 318000 Zhejiang PR China
| | - Ze-Xin Jin
- Institute of Natural Medicine and Health Products, School of Advanced Study, Zhejiang Provincial Key Laboratory of Plant Ecology and Conservation, Taizhou University Taizhou 318000 Zhejiang PR China
| | - De-Lei Chen
- School of Life Science, Hefei Normal University Hefei 230601 PR China
| | - Juan Xiong
- School of Pharmacy, Fudan University No. 826 Zhangheng Road Shanghai 201203 PR China +86-21-51980172 +86-21-51980172
| | - Jia Li
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences Shanghai 201203 PR China
| | - Jin-Feng Hu
- Institute of Natural Medicine and Health Products, School of Advanced Study, Zhejiang Provincial Key Laboratory of Plant Ecology and Conservation, Taizhou University Taizhou 318000 Zhejiang PR China
- School of Pharmacy, Fudan University No. 826 Zhangheng Road Shanghai 201203 PR China +86-21-51980172 +86-21-51980172
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Elder T, Carlos Del Río J, Ralph J, Rencoret J, Kim H, Beckham GT. Radical coupling reactions of piceatannol and monolignols: A density functional theory study. PHYTOCHEMISTRY 2019; 164:12-23. [PMID: 31060026 DOI: 10.1016/j.phytochem.2019.04.003] [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: 02/06/2019] [Revised: 03/14/2019] [Accepted: 04/12/2019] [Indexed: 06/09/2023]
Abstract
Recent experimental work has revealed that the hydroxystilbene piceatannol can function as a monomeric unit in the lignification of palm fruit endocarp tissues. Results indicated that piceatannol homo-couples and cross-couples with monolignols through radical reactions and is integrally incorporated into the lignin polymer. The current work reports on the thermodynamics of the proposed reactions using density functional theory calculations. The results indicated that, in general, the energetics of both homo-coupling and cross-coupling are not dissimilar from those of the monolignol coupling, demonstrating the compatibility of piceatannol with the lignification process. Moreover, the DFT methods appear to predict the correct courses of post-coupling rearomatization reactions.
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Affiliation(s)
- Thomas Elder
- USDA-Forest Service, Southern Research Station, 521 Devall Drive, Auburn, AL, 36849, USA.
| | - José Carlos Del Río
- Instituto de Recursos Naturales y Agrobiología de Sevilla, Consejo Superior de Investigaciones Científicas, Avenida Reina Mercedes, 10, 41012, Seville, Spain
| | - John Ralph
- Department of Energy Great Lakes Bioenergy Research Center, Wisconsin Energy Institute, University of Wisconsin-Madison, Madison, WI, 53726, USA; Department of Biochemistry, University of Wisconsin-Madison, Madison, WI, 53706, USA
| | - Jorge Rencoret
- Instituto de Recursos Naturales y Agrobiología de Sevilla, Consejo Superior de Investigaciones Científicas, Avenida Reina Mercedes, 10, 41012, Seville, Spain
| | - Hoon Kim
- Department of Energy Great Lakes Bioenergy Research Center, Wisconsin Energy Institute, University of Wisconsin-Madison, Madison, WI, 53726, USA; Department of Biochemistry, University of Wisconsin-Madison, Madison, WI, 53706, USA
| | - Gregg T Beckham
- National Bioenergy Center, National Renewable Energy Laboratory, 15013 Denver West Parkway, Golden, CO, 80401, USA
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Zhang YL, Pan QM, Liao HB, Qin JK, Li N, Liang D, Zhang GJ. Coumarinolignoids and lignanoids from the stems and leaves of Sapium discolor. Fitoterapia 2019; 133:17-22. [DOI: 10.1016/j.fitote.2018.12.013] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2018] [Revised: 12/11/2018] [Accepted: 12/16/2018] [Indexed: 10/27/2022]
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20
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Zhang M, Linghu L, Zhang J, Nie X, Li X, Guo D, Xiao S. Bibenzyl Derivatives from Dendrobium nobile. CHINESE J ORG CHEM 2019. [DOI: 10.6023/cjoc201903035] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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21
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Attiq A, Jalil J, Husain K, Ahmad W. Raging the War Against Inflammation With Natural Products. Front Pharmacol 2018; 9:976. [PMID: 30245627 PMCID: PMC6137277 DOI: 10.3389/fphar.2018.00976] [Citation(s) in RCA: 104] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2018] [Accepted: 08/08/2018] [Indexed: 12/31/2022] Open
Abstract
Over the last few decade Non-Steroidal Anti-Inflammatory Drugs (NSAIDs) are the drugs of choice for treating numerous inflammatory diseases including rheumatoid arthritis. The NSAIDs produces anti-inflammatory activity via inhibiting cyclooxygenase enzyme, responsible for the conversation of arachidonic acid to prostaglandins. Likewise, cyclooxegenase-2 inhibitors (COX-2) selectively inhibit the COX-2 enzyme and produces significant anti-inflammatory, analgesic, and anti-pyretic activity without producing COX-1 associated gastrointestinal and renal side effects. In last two decades numerous selective COX-2 inhibitors (COXIBs) have been developed and approved for various inflammatory conditions. However, data from clinical trials have suggested that the prolong use of COX-2 inhibitors are also associated with life threatening cardiovascular side effects including ischemic heart failure and myocardial infection. In these scenario secondary metabolites from natural product offers a great hope for the development of novel anti-inflammatory compounds. Although majority of the natural product based compounds exhibit more selectively toward COX-1. However, the data suggest that slight structural modification can be helpful in developing COX-2 selective secondary metabolites with comparative efficacy and limited side effects. This review is an effort to highlight the secondary metabolites from terrestrial and marine source with significant COX-2 and COX-2 mediated PGE2 inhibitory activity, since it is anticipated that isolates with ability to inhibit COX-2 mediated PGE2 production would be useful in suppressing the inflammation and its classical sign and symptoms. Moreover, this review has highlighted the potential lead compounds including berberine, kaurenoic acid, α-cyperone, curcumin, and zedoarondiol for further development with the help of structure-activity relationship (SAR) studies and their current status.
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Affiliation(s)
- Ali Attiq
- Drug and Herbal Research Centre, Faculty of Pharmacy, University Kebangsaan Malaysia, Kuala Lumpur, Malaysia
| | - Juriyati Jalil
- Drug and Herbal Research Centre, Faculty of Pharmacy, University Kebangsaan Malaysia, Kuala Lumpur, Malaysia
| | - Khairana Husain
- Drug and Herbal Research Centre, Faculty of Pharmacy, University Kebangsaan Malaysia, Kuala Lumpur, Malaysia
| | - Waqas Ahmad
- School of Pharmaceutical Sciences, Universiti Sains Malaysia, Gelugor, Malaysia
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Wang YX, Zhou L, Wang J, Lin B, Wang XB, Huang XX, Song SJ. Enantiomeric lignans with anti-β-amyloid aggregation activity from the twigs and leaves of Pithecellobium clypearia Benth. Bioorg Chem 2018; 77:579-585. [DOI: 10.1016/j.bioorg.2018.02.001] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2017] [Revised: 02/01/2018] [Accepted: 02/02/2018] [Indexed: 12/20/2022]
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Antonisamy P, Subash-Babu P, Albert-Baskar A, Alshatwi AA, Aravinthan A, Ignacimuthu S, Choi KC, Lee SC, Kim JH. Experimental study on gastroprotective efficacy and mechanisms of luteolin-7-O-glucoside isolated from Ophiorrhiza mungos Linn. in different experimental models. J Funct Foods 2016. [DOI: 10.1016/j.jff.2016.06.003] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
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25
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The role and potential mechanism of resveratrol in the prevention and control of epilepsy. Future Med Chem 2015; 7:2005-18. [PMID: 26505553 DOI: 10.4155/fmc.15.130] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
Epilepsy is one of the most common diseases affecting the nervous system, with more than 50 million patients suffering from epilepsy worldwide. Although epilepsy has been prevalent for thousands of years, it is still not possible to completely control the disease. Despite an increase in the number of available antiepileptic drugs, the incidence of epilepsy and its cure rate have not been substantially improved; thus, there is an urgent need to identify new drugs that treat, cure or protect against epilepsy. Resveratrol is a polyphenol compound with a broad range of biological activity; not only it has considerable antiepileptic effects, but it is also neuroprotective and has functions to counter epileptic depression. Resveratrol has the potential to be a new antiepileptic drug, thus further studies are needed to better investigate its potential.
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Pilkington LI, Barker D. Synthesis and biology of 1,4-benzodioxane lignan natural products. Nat Prod Rep 2015; 32:1369-88. [DOI: 10.1039/c5np00048c] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
This review describes the evolution of synthetic methods towards 1,4-benzodioxane lignan natural products, from early biomimetic approaches to recent enantiospecific syntheses. Additionally, a comprehensive report of their biosynthesis and significant biological activities is detailed.
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Affiliation(s)
| | - David Barker
- School of Chemical Sciences
- University of Auckland
- New Zealand
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Impact of wines and wine constituents on cyclooxygenase-1, cyclooxygenase-2, and 5-lipoxygenase catalytic activity. Mediators Inflamm 2014; 2014:178931. [PMID: 24976682 PMCID: PMC4058118 DOI: 10.1155/2014/178931] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2013] [Accepted: 05/06/2014] [Indexed: 11/18/2022] Open
Abstract
Cyclooxygenases and lipoxygenases are proinflammatory enzymes; the former affects platelet aggregation, vasoconstriction, vasodilatation and later the development of atherosclerosis. Red wines from Georgia and central and western Europe inhibited cyclooxygenase-1 (COX-1) activity in the range of 63–94%, cyclooxygenase-2 (COX-2) activity in the range of 20–44% (tested at a concentration of 5 mL/L), and 5-lipoxygenase (5-LOX) activity in the range of 72–84% (at a concentration of 18.87 mL/L). White wines inhibited 5-LOX in the range of 41–68% at a concentration of 18.87 mL/L and did not inhibit COX-1 and COX-2. Piceatannol (IC50 = 0.76 μM) was identified as a strong inhibitor of 5-LOX followed by luteolin (IC50 = 2.25 μM), quercetin (IC50 = 3.29 μM), and myricetin (IC50 = 4.02 μM). trans-Resveratrol was identified as an inhibitor of COX-1 (IC50 = 2.27 μM) and COX-2 (IC50 = 3.40 μM). Red wine as a complex mixture is a powerful inhibitor of COX-1, COX-2, and 5-LOX, the enzymes involved in eicosanoid biosynthetic pathway.
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Setoguchi Y, Oritani Y, Ito R, Inagaki H, Maruki-Uchida H, Ichiyanagi T, Ito T. Absorption and metabolism of piceatannol in rats. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2014; 62:2541-2548. [PMID: 24625210 DOI: 10.1021/jf404694y] [Citation(s) in RCA: 79] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Piceatannol (trans-3,3',4,5'-tetrahydroxystilbene), a natural analogue of resveratrol, has multiple biological functions. Nevertheless, piceatannol's biological fate is yet to be determined. In this study, we evaluated the absorption and metabolism of piceatannol in rats. Furthermore, the area under the plasma concentration curves (AUC) and metabolic pathway of piceatannol were compared with those of resveratrol. We determined the plasma concentrations of piceatannol, resveratrol, and their respective metabolites following their intragastric administration. Resveratrol metabolites were only conjugates, whereas piceatannol metabolites were piceatannol conjugates, O-methyl piceatannol, and its conjugates. The AUC for piceatannol, resveratrol, and their metabolites increased in a dose-dependent manner (90-360 μmol/kg). The AUC for total piceatannol was less than that for total resveratrol, whereas the AUC for piceatannol (8.6 μmol·h/L) after piceatannol and resveratrol coadministration was 2.1 times greater than that for resveratrol (4.1 μmol·h/L). The greater AUC for piceatannol was a result of its higher metabolic stability.
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Affiliation(s)
- Yuko Setoguchi
- Research Institute, Morinaga & CO., Ltd. , 2-1-16 Sachiura, Kanazawa-ku, Yokohama 236-0003, Japan
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Cheng YQ, Jiang R, Huang W, Wei W, Chen CJ, Tan RX, Ge HM. Hopeachinols E–K, novel oligostilbenoids from the stem bark of Hopea chinensis. RSC Adv 2014. [DOI: 10.1039/c4ra03371j] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Seven novel oligostilbenoids, isolated from Hopea chinensis, may biosynthetically derived from the common intermediate vaticanol A.
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Affiliation(s)
- Yi-Qing Cheng
- Institute of Functional Biomolecules
- State Key Laboratory of Pharmaceutical Biotechnology
- Nanjing University
- Nanjing, People's Republic of China
| | - Rong Jiang
- Institute of Functional Biomolecules
- State Key Laboratory of Pharmaceutical Biotechnology
- Nanjing University
- Nanjing, People's Republic of China
| | - Wei Huang
- Institute of Functional Biomolecules
- State Key Laboratory of Pharmaceutical Biotechnology
- Nanjing University
- Nanjing, People's Republic of China
| | - Wei Wei
- Institute of Functional Biomolecules
- State Key Laboratory of Pharmaceutical Biotechnology
- Nanjing University
- Nanjing, People's Republic of China
| | - Chao-Jun Chen
- Institute of Functional Biomolecules
- State Key Laboratory of Pharmaceutical Biotechnology
- Nanjing University
- Nanjing, People's Republic of China
| | - Ren-Xiang Tan
- Institute of Functional Biomolecules
- State Key Laboratory of Pharmaceutical Biotechnology
- Nanjing University
- Nanjing, People's Republic of China
| | - Hui-Ming Ge
- Institute of Functional Biomolecules
- State Key Laboratory of Pharmaceutical Biotechnology
- Nanjing University
- Nanjing, People's Republic of China
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30
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Pilkington LI, Barker D. Total Synthesis of (-)-Isoamericanin A and (+)-Isoamericanol A. European J Org Chem 2013. [DOI: 10.1002/ejoc.201301363] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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31
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Rouf A, Aga MA, Kumar B, Taneja SC. A facile approach to chiral 1,4-benzodioxane toward the syntheses of doxazosin, prosympal, piperoxan, and dibozane. Tetrahedron Lett 2013. [DOI: 10.1016/j.tetlet.2013.09.040] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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32
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Chemical constituents from the rhizomes of Smilax glabra and their antimicrobial activity. Molecules 2013; 18:5265-87. [PMID: 23698042 PMCID: PMC6270451 DOI: 10.3390/molecules18055265] [Citation(s) in RCA: 87] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2013] [Revised: 04/24/2013] [Accepted: 05/02/2013] [Indexed: 11/17/2022] Open
Abstract
Six new phenolic compounds, named smiglabrone A (1), smiglabrone B (2), smilachromanone (3), smiglastilbene (4), smiglactone (5), smiglabrol (6), together with fifty-seven known ones 7–63were isolated from the rhizomes of Smilax glabra. Their structures were elucidated on the basis of extensive spectroscopic analyses, as well as by comparison with literature data. Twenty-seven of these compounds were obtained from and identified in the genus Smilax for the first time. The absolute configuration of (2S)-1,2-O-di-trans-p-coumaroylglycerol (43) was determined for the first time using the exciton-coupled circular dichroism (ECCD) method. Thirty isolated compounds were evaluated for their antimicrobial activity against three Gram-negative bacteria, three Gram-positive bacteria and one fungus, and the corresponding structure-activity relationships were also discussed. Eighteen compounds were found to be antimicrobial against the microorganisms tested and the minimum inhibitory concentrations (MIC) were in the range of 0.0794–3.09 mM. Among them, compound 1 showed antimicrobial activity against Canidia albicans with MIC value of 0.146 mM, which was stronger than cinchonain Ia with an MIC of 0.332 mM. Compounds 3 and 4 exhibited inhibitory activity against Staphylococcus aureus with MIC values of 0.303 and 0.205 mM, respectively. The results indicated that these antimicrobial constituents of this crude drug might be responsible for its clinical antimicrobial effect.
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Four new coumarinolignoids from seeds of Solanum indicum. Fitoterapia 2012; 84:360-5. [PMID: 22975162 DOI: 10.1016/j.fitote.2012.09.002] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2012] [Revised: 08/30/2012] [Accepted: 09/01/2012] [Indexed: 11/23/2022]
Abstract
Activity-guided fractionation of seeds of Solanum indicum for anti-HBV activity led to the isolation of two novel coumarinolignoid alkaloids (indicumines A-B, 1-2) and two new coumarinolignoids (indicumines C-D, 3-4), together with four known coumarins (5-8). Their structures were established on the basis of spectroscopic data. The two novel coumarinolignoid alkaloids shows anti-HBV activities through specifically inhibiting the secretion of HBsAg in HepG2.2.15.
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Piotrowska H, Kucinska M, Murias M. Biological activity of piceatannol: Leaving the shadow of resveratrol. MUTATION RESEARCH-REVIEWS IN MUTATION RESEARCH 2012; 750:60-82. [DOI: 10.1016/j.mrrev.2011.11.001] [Citation(s) in RCA: 275] [Impact Index Per Article: 22.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/01/2011] [Revised: 10/26/2011] [Accepted: 11/03/2011] [Indexed: 01/27/2023]
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Núñez MJ, Kennedy ML, Jiménez IA, Bazzocchi IL. Uragogin and blepharodin, unprecedented hetero-Diels–Alder adducts from Celastraceae species. Tetrahedron 2011. [DOI: 10.1016/j.tet.2011.03.019] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Gacche R, Shaikh R, Pund M, Deshmukh R. Cyclooxygenase Inhibitory, Cytotoxicity and Free Radical Scavenging Activities of Selected Medicinal Plants Used in Indian Traditional Medicine. ACTA ACUST UNITED AC 2011. [DOI: 10.5530/pj.2011.19.11] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Lim C, Lee M, Park EJ, Cho R, Park HJ, Lee SJ, Cho H, Lee SK, Kim S. Sulfonamide derivatives of styrylheterocycles as a potent inhibitor of COX-2-mediated prostaglandin E2 production. Bioorg Med Chem Lett 2010; 20:6938-41. [PMID: 20970329 DOI: 10.1016/j.bmcl.2010.09.136] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2010] [Revised: 09/16/2010] [Accepted: 09/28/2010] [Indexed: 11/25/2022]
Abstract
The overproduction of prostaglandin E(2) (PGE(2)) plays an important role in a variety of pathophysiological processes including inflammation and carcinogenesis. Therefore, the modulation of PGE(2) production is a promising target in the design of chemotherapeutic agents. In the present study, the inhibitory effects of a series of styrylheterocycles having either a p-SO(2)NH(2) or p-SO(2)Me group on the production of cyclooxygenase-2-mediated PGE(2) were evaluated in lipopolysaccharide-stimulated RAW264.7 murine macrophages. Among the series of styrylheterocycle derivatives, (E)-4-(2-(thiophen-3-yl)vinyl)benzenesulfonamide exhibited a potent inhibitory activity, with an IC(50) value of 0.013 μM. The inhibitory activity against the overproduction of PGE(2) by the active compound was found to be due in part to the suppression of COX-2 mRNA expression.
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Affiliation(s)
- Chaemin Lim
- College of Pharmacy, Seoul National University, Seoul, Republic of Korea
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Lam SH, Lee SS. Unusual stilbenoids and a stilbenolignan from seeds of Syagrus romanzoffiana. PHYTOCHEMISTRY 2010; 71:792-797. [PMID: 20156629 DOI: 10.1016/j.phytochem.2010.01.013] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/29/2009] [Revised: 11/26/2009] [Accepted: 01/22/2010] [Indexed: 05/28/2023]
Abstract
Stilbenoids, syagrusins A-B (1-2), and a stilbenolignan, 5-hydroxyaiphanol (3), along with three known phenylpropanoids (4-6), were isolated from seeds of Syagrus romanzoffiana. Compounds 1 and 2 possess unusual 1,4,4a,9a-tetrahydrofluoren-9-one and bicyclo[3.3.0]octanedione skeletons, respectively, whereas compound 3 is a stilbenolignan belonging to a very rare structural class of plant secondary metabolites. Their structures were elucidated by spectroscopic analyses. Compounds 1-3 exhibited moderate inhibitory activity against alpha-glucosidase with IC(50) values of 16.9 microM (1), 23.7 microM (2) and 12.8 microM (3), respectively.
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Affiliation(s)
- Sio-Hong Lam
- School of Pharmacy, College of Medicine, National Taiwan University, Taipei, Taiwan, ROC
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Begum SA, Sahai M, Ray AB. Non-conventional Lignans: Coumarinolignans, Flavonolignans, and Stilbenolignans. FORTSCHRITTE DER CHEMIE ORGANISCHER NATURSTOFFE / PROGRESS IN THE CHEMISTRY OF ORGANIC NATURAL PRODUCTS, VOL. 93 2010; 93:1-70. [DOI: 10.1007/978-3-7091-0140-7_1] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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Sosnowska J, Balslev H. American palm ethnomedicine: a meta-analysis. JOURNAL OF ETHNOBIOLOGY AND ETHNOMEDICINE 2009; 5:43. [PMID: 20034398 PMCID: PMC2804589 DOI: 10.1186/1746-4269-5-43] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/23/2009] [Accepted: 12/24/2009] [Indexed: 05/09/2023]
Abstract
BACKGROUND Many recent papers have documented the phytochemical and pharmacological bases for the use of palms (Arecaceae) in ethnomedicine. Early publications were based almost entirely on interviews that solicited local knowledge. More recently, ethnobotanically guided searches for new medicinal plants have proven more successful than random sampling for identifying plants that contain biodynamic ingredients. However, limited laboratory time and the high cost of clinical trials make it difficult to test all potential medicinal plants in the search for new drug candidates. The purpose of this study was to summarize and analyze previous studies on the medicinal uses of American palms in order to narrow down the search for new palm-derived medicines. METHODS Relevant literature was surveyed and data was extracted and organized into medicinal use categories. We focused on more recent literature than that considered in a review published 25 years ago. We included phytochemical and pharmacological research that explored the importance of American palms in ethnomedicine. RESULTS Of 730 species of American palms, we found evidence that 106 species had known medicinal uses, ranging from treatments for diabetes and leishmaniasis to prostatic hyperplasia. Thus, the number of American palm species with known uses had increased from 48 to 106 over the last quarter of a century. Furthermore, the pharmacological bases for many of the effects are now understood. CONCLUSIONS Palms are important in American ethnomedicine. Some, like Serenoa repens and Roystonea regia, are the sources of drugs that have been approved for medicinal uses. In contrast, recent ethnopharmacological studies suggested that many of the reported uses of several other palms do not appear to have a strong physiological basis. This study has provided a useful assessment of the ethnobotanical and pharmacological data available on palms.
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Affiliation(s)
- Joanna Sosnowska
- W. Szafer Institute of Botany, Polish Academy of Sciences, Lubicz 46, 31-512 Cracow, Poland
| | - Henrik Balslev
- Ecoinformatics and Biodiversity, Department of Biological Sciences, Aarhus University, Build. 1540, Ny Munkegade 114, DK-8000 Aarhus C., Denmark
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Abstract
Natural stilbenes have been a hot research topic due to their intricate structures and diverse biological activities. Although their molecular backbone consists only of 1,2-diphenylethylene units, stilbenes show an enormous diversity with regard to the different units present, the degree of polymerisation, and the pattern of oligomer construction. From January 1995 to the end of 2008, more than 400 new naturally occurring stilbenes were isolated and identified, and this review focuses on their structural diversity, distribution, and bioactivity.
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Affiliation(s)
- Tao Shen
- Department of Natural Product Chemistry, School of Pharmaceutical Sciences, Shandong University, 44 West Wenhua Road, Jinan, 250012, P. R. China
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Zhang QJ, Zheng ZF, Chen RY, Yu DQ. Two new dimeric stilbenes from the stem bark of Morus australis. JOURNAL OF ASIAN NATURAL PRODUCTS RESEARCH 2009; 11:138-141. [PMID: 19219726 DOI: 10.1080/10286020802573404] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Two new dimeric stilbenes austrafuran B and austrafuran C were isolated from the bark of Morus australis. Their structures were elucidated on the basis of spectroscopic methods.
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Affiliation(s)
- Qing-Jian Zhang
- The Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine, Ministry of Education, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
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Xu JF, Feng ZM, Liu J, Zhang PC. New Hepatoprotective Coumarinolignoids fromMallotus apelta. Chem Biodivers 2008; 5:591-7. [DOI: 10.1002/cbdv.200890055] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Xiao K, Zhang HJ, Xuan LJ, Zhang J, Xu YM, Bai DL. Stilbenoids: Chemistry and bioactivities. BIOACTIVE NATURAL PRODUCTS (PART N) 2008. [DOI: 10.1016/s1572-5995(08)80032-4] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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Wu CZ, Cai XF, Dat NT, Hong SS, Han AR, Seo EK, Hwang BY, Nan JX, Lee D, Lee JJ. Bisbakuchiols A and B, novel dimeric meroterpenoids from Psoralea corylifolia. Tetrahedron Lett 2007. [DOI: 10.1016/j.tetlet.2007.10.059] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Chand S, Banwell MG. Biomimetic Preparation of the Racemic Modifications of the Stilbenolignan Aiphanol and Three Congeners. Aust J Chem 2007. [DOI: 10.1071/ch07044] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
A chromatographically separable mixture of the racemic modification, (±)-1, of the stilbenolignan (–)-aiphanol and congeners (±)-2–4 has been generated by a silver(I)-mediated and potentially biomimetic oxidative coupling of piceatannol (5) with sinapic alcohol (6).
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An enantioselective total synthesis of the stilbenolignan (−)-aiphanol and the determination of its absolute stereochemistry. ACTA ACUST UNITED AC 2005. [DOI: 10.1016/j.tetasy.2005.02.035] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Kim TH, Ito H, Hayashi K, Hasegawa T, Machiguchi T, Yoshida T. Aromatic Constituents from the Heartwood of Santalum album L. Chem Pharm Bull (Tokyo) 2005; 53:641-4. [PMID: 15930775 DOI: 10.1248/cpb.53.641] [Citation(s) in RCA: 98] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
A phytochemical investigation of the polar constituents in the heartwood of Indian Santalum album L. resulted in the isolation of three new neolignans (1-3) and a new aromatic ester (4), along with 14 known components. The structures of the new compounds (1-4) were established using spectroscopic methods.
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Affiliation(s)
- Tae Hoon Kim
- Faculty of Pharmaceutical Sciences, Okayama University, Tsushima, Okayama 700-8530, Japan
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Lee SK, Park EJ, Lee E, Min HY, Kim EY, Lee T, Kim S. Styrylheterocycles as a novel class inhibitor of cyclooxygenase-2-mediated prostaglandin E(2) production. Bioorg Med Chem Lett 2004; 14:2105-8. [PMID: 15080988 DOI: 10.1016/j.bmcl.2004.02.038] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2003] [Revised: 02/07/2004] [Accepted: 02/10/2004] [Indexed: 11/21/2022]
Abstract
The inhibitory effects of a series of styrylheterocycles on the production of cyclooxygenase-2-mediated prostaglandin E(2) (PGE(2)) were evaluated in lipopolysaccharide-stimulated RAW264.7 murine macrophages. A new series of potential inhibitors, including 3-[2-(4-methoxy-phenyl)-vinyl]-thiophene, have been identified, thus providing novel chemical leads for the further development of potential inhibitors in this capacity. The suppression of COX-2 mRNA expression by the active styrylheterocycles, in part, was involved in the inhibitory activity against the overproduction of PGE(2).
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Affiliation(s)
- Sang Kook Lee
- College of Pharmacy, Ewha Womans University, 11-1 Daehyun, Seodaemun, Seoul 120-750, South Korea
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