1
|
Le AN, Nguyen TN, Dong DTA. Development of RP HPLC-PDA method for simultaneous quantitative analysis of Inoscavin A and Meshimakobnol A and application on some Phellinus mushroom species. Food Sci Nutr 2024; 12:3602-3611. [PMID: 38726414 PMCID: PMC11077241 DOI: 10.1002/fsn3.4031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2023] [Revised: 09/30/2023] [Accepted: 01/30/2024] [Indexed: 05/12/2024] Open
Abstract
Phellinus igniarius, a medicinal mushroom containing many active ingredients with health benefits, can be applied in functional food. At present, the quantification of the main active ingredients from higher fungi (Ganoderma, Phellinus…) materials from different growing sources is a mandatory requirement to standardize the input resources of pharmaceutical and food production. Our study's aims are to perfect the RP HPLC-PDA method for quantitative analysis of Inoscavin A and Meshimakobnol A which are two main active ingredients present in Phellinus mushroom. In this analytical method, a C18-HPLC column and the mixture of methanol and formic acid solutions (pH = 2.2) are used to analyze and elute the active substances with the column activity parameters being the concentration gradient. This perfect method was tested for system suitability, repeatability, intermediate precision, recovery, and linear curve calibration to validate the method. After validation, the perfected RP HPLC-PDA method was applied to analyze eight samples of Phellinus and three samples of Ganoderma mushroom category. This method can be the basis for classifying between Phellinus and some other medicinal mushrooms.
Collapse
Affiliation(s)
- Anh Ngoc Le
- Department of Food Technology, Faculty of Chemical EngineeringHo Chi Minh City University of Technology (HCMUT)Ho Chi Minh cityVietnam
- Vietnam National University Ho Chi Minh City (VNU‐HCM)Ho Chi Minh cityVietnam
| | - Tuan Ngoc Nguyen
- Institute of Biotechnology and Food TechnologyIndustrial University of Ho Chi Minh CityHo Chi Minh CityVietnam
| | - Dao Thi Anh Dong
- Department of Food Technology, Faculty of Chemical EngineeringHo Chi Minh City University of Technology (HCMUT)Ho Chi Minh cityVietnam
- Vietnam National University Ho Chi Minh City (VNU‐HCM)Ho Chi Minh cityVietnam
| |
Collapse
|
2
|
Qiu P, Liu J, Zhao L, Zhang P, Wang W, Shou D, Ji J, Li C, Chai K, Dong Y. Inoscavin A, a pyrone compound isolated from a Sanghuangporus vaninii extract, inhibits colon cancer cell growth and induces cell apoptosis via the hedgehog signaling pathway. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2022; 96:153852. [PMID: 35026508 DOI: 10.1016/j.phymed.2021.153852] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/06/2021] [Revised: 11/02/2021] [Accepted: 11/06/2021] [Indexed: 06/14/2023]
Abstract
BACKGROUND Sanghuangporus vaninii, a large precious medicinal fungus called Sanghuang in China, has significant antitumor activity. We previously reported that a Sanghuangporus vaninii extract could lead to apoptosis in HT-29 cells through the intrinsic apoptotic pathway. We further found that Inoscavin A exhibited anti-colon cancer activity, but its specific mechanisms have not been fully elucidated. METHODS Inoscavin A was obtained from Sanghuangporus vaninii by the classic phytochemical separation technology. The male BALB/c nude mice were injected with HT-29 colon cancer cells as animal model. In order to observe the pathological changes of tumor section, the hematoxylin-eosin(H&E) staining was applied in the histological analysis. Metabolomics was utilized for the investigation of the overall changes of serum metabolites in animal model, and the potential targets of Inoscavin A were analyzed by Ingenuity Pathway Analysis (IPA). We further employed a molecular docking approach to predict the degree of combination of Inoscavin A and Smo. Then we further performed Western blotting and immunofluorescence analysis to investigate the expression of proteins involved in Hh-related pathways in tumor tissues. In addition, the colony formation assay, scratch-wound assay and transwell migration and invasion assay were conducted to evaluate the anti-colon-cancer activity of Inoscavin A. Concurrently, the mitochondrial membrane potential assay and TUNEL apoptosis assay were detected to demonstrate the effect of Inoscavin A on promoting HT-29 cells apoptosis. Western blot experiments verified the anti-tumor effects of Inoscavin A were modulated the protein expression of Shh, Ptch1, Smo and Gli1 in HT-29 cells. RESULTS We showed that Inoscavin A, a pyrone compound isolated from the Sanghuangporus vaninii extract, exerted its antitumor activity in an HT-29 colon cancer cell xenograft mouse model. Subsequently, we first time prove that the antitumor effects of Inoscavin A were related to the hedgehog (Hh) signaling pathway. Furthermore, we demonstrated that Smo, the core receptor of the Hh pathway, was critical for the induction of apoptosis of Inoscavin A and that overexpression of this target could significantly rescue cell apoptosis induced by Inoscavin A treatment. CONCLUSION Thus, our studies first propose that the natural outgrowth Inoscavin A exerted its anti-cancer effects by inhibiting Smo to suppress the activity of the Hh pathway though inhibiting cell proliferation and promoting apoptosis. These findings further indicate that Inoscavin A will be expected to be a prospective remedical compound for the treatment of colon cancer.
Collapse
Affiliation(s)
- Ping Qiu
- Academy of Chinese Medical Science, Zhejiang Chinese Medical University, Hang zhou, China
| | - Jingqun Liu
- Academy of Chinese Medical Science, Zhejiang Chinese Medical University, Hang zhou, China
| | - Lisha Zhao
- Department of Medicine, Zhejiang Academy of Traditional Chinese Medicine, Hang zhou 310007, China
| | - Pinghu Zhang
- Medical College, Yangzhou University, Yang zhou, China
| | - Weike Wang
- Hangzhou Academy of Agricultural Sciences, Hang zhou, China
| | - Dan Shou
- Department of Medicine, Zhejiang Academy of Traditional Chinese Medicine, Hang zhou 310007, China
| | - Jinjun Ji
- Academy of Chinese Medical Science, Zhejiang Chinese Medical University, Hang zhou, China
| | - Changyu Li
- Academy of Chinese Medical Science, Zhejiang Chinese Medical University, Hang zhou, China
| | - Kequn Chai
- Department of Medicine, Zhejiang Academy of Traditional Chinese Medicine, Hang zhou 310007, China.
| | - Yu Dong
- Department of Medicine, Zhejiang Academy of Traditional Chinese Medicine, Hang zhou 310007, China.
| |
Collapse
|
3
|
Rani S, Kumar D, Kamra N, Thakral S, Singh A, Sangwan PL, Singh SK. Design and synthesis of highly oxygenated furo[3,2‐c]pyran‐4‐ones and furo[3,2‐c]chromen‐4‐ones scaffold as anticancer and antimicrobial agents. J Heterocycl Chem 2021. [DOI: 10.1002/jhet.4374] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Suman Rani
- Department of Chemistry Guru Jambheshwar University of Science and Technology Hisar India
| | - Devinder Kumar
- Department of Chemistry Guru Jambheshwar University of Science and Technology Hisar India
| | - Nisha Kamra
- Department of Chemistry Guru Jambheshwar University of Science and Technology Hisar India
| | - Sumit Thakral
- Department of Chemistry Guru Jambheshwar University of Science and Technology Hisar India
| | - Ajeet Singh
- Cancer Pharmacology Division CSIR‐Indian Institute of Integrative Medicine Jammu India
| | - Payare L. Sangwan
- Cancer Pharmacology Division CSIR‐Indian Institute of Integrative Medicine Jammu India
| | - Shashank K. Singh
- Cancer Pharmacology Division CSIR‐Indian Institute of Integrative Medicine Jammu India
| |
Collapse
|
4
|
Zhang Y, Liu R, Liu C, Li S, Hou W. Development of ultrasound-assisted centrifugal extraction combined with two countercurrent chromatography systems for the simultaneous extraction and isolation of phytochemicals. J Sep Sci 2021; 44:2279-2289. [PMID: 33793077 DOI: 10.1002/jssc.202100049] [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] [Received: 01/23/2021] [Revised: 03/09/2021] [Accepted: 03/22/2021] [Indexed: 01/27/2023]
Abstract
We proposed a method for the extraction of medicinal herbs, called ultrasound-assisted centrifugal extraction, and an online solvent concentration method. These techniques were coupled with two countercurrent chromatography systems and applied to the continuous extraction and online isolation of chemical constituents from Inonotus obliquus. Raw plants were extracted using a two-phase petroleum-ethanol-water (2.0:1.0:2.0, v/v/v) process, and then the aqueous and organic phases were concentrated using the proposed online solvent concentrator. The countercurrent chromatography preparation prior to separation includes pumping of the two-phase solution, rotating column, and equilibrium column. Following online concentration, the extracted solution was pumped into a second countercurrent chromatography process for separation. During separation, the extraction solution and concentrated extract were prepared automatically. Upon completion of the first cycle of ultrasound-assisted centrifugal extraction/two countercurrent chromatography, the second cycle experiment starts. This process can be indefinitely repeated. In this study, six target compounds with purities above 97.71% were successfully extracted and isolated online using a two-phase solvent system consisting of n-hexane-ethyl acetate-acetonitrile (4.5:1.5:5.5, v/v/v) and n-hexane-ethyl acetate-methanol-water (0.4:3.0:1.5:2.5, v/v/v/v). Compared to conventional extraction methods, the instrumental setup of the proposed method provides enhanced automation, efficiency, purity, and systematic extraction and isolation of natural products.
Collapse
Affiliation(s)
- Yuchi Zhang
- Central Laboratory, Changchun Normal University, Changchun, P. R. China
| | - Ruoyao Liu
- Central Laboratory, Changchun Normal University, Changchun, P. R. China.,Faculty of Chemistry, Changchun Normal University, Changchun, P. R. China
| | - Chunming Liu
- Central Laboratory, Changchun Normal University, Changchun, P. R. China
| | - Sainan Li
- Central Laboratory, Changchun Normal University, Changchun, P. R. China
| | - Wanchao Hou
- Central Laboratory, Changchun Normal University, Changchun, P. R. China.,Faculty of Chemistry, Changchun Normal University, Changchun, P. R. China
| |
Collapse
|
5
|
Triterpenes and Phenolic Compounds from the Fungus Fuscoporia torulosa: Isolation, Structure Determination and Biological Activity. Molecules 2021; 26:molecules26061657. [PMID: 33809760 PMCID: PMC8002351 DOI: 10.3390/molecules26061657] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2021] [Revised: 02/26/2021] [Accepted: 03/15/2021] [Indexed: 11/22/2022] Open
Abstract
Investigation of the methanol extract of the poroid fungus Fuscoporia torulosa resulted in the isolation of a novel triterpene, fuscoporic acid (1), together with inoscavin A and its previously undescribed Z isomer (2 and 3), 3,4-dihydroxy-benzaldehide (4), osmundacetone (5), senexdiolic acid (6), natalic acid (7), and ergosta-7,22-diene-3-one (8). The structures of fungal compounds were determined on the basis of NMR and MS spectroscopic analyses, as well as molecular modeling studies. Compounds 1, 6–8 were examined for their antibacterial properties on resistant clinical isolates, and cytotoxic activity on human colon adenocarcinoma cell lines. Compound 8 was effective against Colo 205 (IC50 11.65 ± 1.67 µM), Colo 320 (IC50 8.43 ± 1.1 µM) and MRC-5 (IC50 7.92 ± 1.42 µM) cell lines. Potentially synergistic relationship was investigated between 8 and doxorubicin, which revealed a synergism between the examined compounds with a combination index (CI) at the 50% growth inhibition dose (ED50) of 0.521 ± 0.15. Several compounds (1 and 6–8) were tested for P-glycoprotein modulatory effect in Colo 320 resistant cancer cells, but none of the compounds proved to be effective in this assay. Fungal metabolites 2–5 were evaluated for their antioxidant activity using the oxygen radical absorbance capacity (ORAC) and DPPH assays. Compounds 4 and 5 were found to have a considerable antioxidant effect with EC50 0.25 ± 0.01 (DPPH) and 12.20 ± 0.92 mmol TE/g (ORAC). The current article provides valuable information on both the chemical and pharmacological profiles of Fuscoporia torulosa, paving the way for future studies with this species.
Collapse
|
6
|
Nikerov DS, Ashatkina MA, Shiryaev VA, Tkachenko IM, Rybakov VB, Reznikov AN, Klimochkin YN. Synthesis of non-racemic dihydrofurans via Ni(II)-catalyzed asymmetric Michael addition. Tetrahedron 2021. [DOI: 10.1016/j.tet.2021.132029] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
|
7
|
Avigliano E, Rosso JJ, Lijtmaer D, Ondarza P, Piacentini L, Izquierdo M, Cirigliano A, Romano G, Nuñez Bustos E, Porta A, Mabragaña E, Grassi E, Palermo J, Bukowski B, Tubaro P, Schenone N. Biodiversity and threats in non-protected areas: A multidisciplinary and multi-taxa approach focused on the Atlantic Forest. Heliyon 2019; 5:e02292. [PMID: 31497670 PMCID: PMC6722266 DOI: 10.1016/j.heliyon.2019.e02292] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2019] [Revised: 07/04/2019] [Accepted: 08/08/2019] [Indexed: 01/15/2023] Open
Abstract
Along many decades, protected environments were targeted by the scientific community for ecological research and for the collection of scientific information related to environmental aspects and biodiversity. However, most of the territory in hotspot regions with weak or even non legal protection has been left aside. These non-protected areas (NPA) could host high biodiversity values. This paper addresses how scientific effort on a NPA (CIAR) of 700 ha from the Atlantic Rain Forest, generates new information and tools for large-scale environmental and biodiversity management in NPAs. Information published during the last decade was summarized and complemented with subsequent novel data about biodiversity (new species, first records, DNA and chemical analyses, etc.). The results showed: 1 new genus (arachnid), 6 new species and several putative new species (fish and arthropod), 6 vulnerable species (bird and mammal) and 36 first records for Argentina (fish, arthropod, platyhelminth and fungi). When compared with protected natural areas of the same biome, the CIAR showed highly valuable aspects for fauna and environment conservation, positioning this NPA as a worldwide hotspot for some taxa. Indeed, when compared to international hotspots in a coordinated Malaise trap program, the CIAR showed 8,651 different barcode index numbers (∼species) of arthropods, 80% of which had not been previously barcoded. Molecules like Inoscavin A, with antifungal activity against phytopathogens, was isolated for the first time in Phellinus merrillii fungi. The study of major threats derived from anthropic activities measured 20 trace elements, 18 pesticides (i.e. endosulfans, chlorpyrifos, DDTs, HCHs) and 27 pharmaceuticals and drugs (i.e. benzoylecgonine and norfluoxetine) in different biotic and abiotic matrices (water, sediment, fish and air biomonitors). This integrated data analysis shows that biodiversity research in NPA is being undervalued and how multidisciplinary and multi-taxa surveys creates a new arena for research and a pathway towards sustainable development in emerging countries with biodiversity hotspots.
Collapse
Affiliation(s)
- Esteban Avigliano
- Centro de Investigaciones Antonia Ramos (CIAR), Fundación Bosques Nativos Argentinos, Camino Balneario s/n, Villa Bonita, Misiones, Argentina
- Instituto de Investigaciones en Producción Animal (INPA-CONICET-UBA), Universidad de Buenos Aires, Av. Chorroarín 280, (C1427CWO), Buenos Aires, Argentina
| | - Juan Jose Rosso
- Grupo de Biotaxonomía Morfológica y Molecular de Peces (BIMOPE), Instituto de Investigaciones Marinas y Costeras, Facultad de Ciencias Exactas y Naturales, Universidad Nacional de Mar del Plata (CONICET), Dean Funes 3350, (B7600), Mar del Plata, Argentina
| | - Dario Lijtmaer
- Museo Argentino de Ciencias Naturales “Bernardino Rivadavia” (MACN-CONICET), Av. Angel Gallardo 470, (C1405DJR), Buenos Aires, Argentina
| | - Paola Ondarza
- Laboratorio de Ecotoxicología y Contaminación Ambiental, Instituto de Investigaciones Marinas y Costeras, Facultad de Ciencias Exactas y Naturales, Universidad Nacional de Mar del Plata (CONICET), Dean Funes 3350, (B7600), Mar del Plata, Argentina
| | - Luis Piacentini
- Museo Argentino de Ciencias Naturales “Bernardino Rivadavia” (MACN-CONICET), Av. Angel Gallardo 470, (C1405DJR), Buenos Aires, Argentina
| | - Matías Izquierdo
- Laboratorio de Biología Reproductiva y Evolución, Instituto de Diversidad y Ecología Animal (IDEA-UNC-CONICET), Facultad de Ciencias Exactas Físicas y Naturales, Universidad Nacional de Córdoba. Av. Velez Sarsfield 299 (X5000 JJC), Córdoba, Argentina
| | - Adriana Cirigliano
- Departamento de Química Orgánica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Pabellón 2, (1428), Buenos Aires, Argentina
| | - Gonzalo Romano
- Departamento de Biología, Facultad de Ciencias Naturales, Universidad Nacional de la Patagonia San Juan Bosco (CONICET), Ruta 259 km 16.4, (9000), Esquel, Chubut, Argentina
| | - Ezequiel Nuñez Bustos
- Museo Argentino de Ciencias Naturales “Bernardino Rivadavia” (MACN-CONICET), Av. Angel Gallardo 470, (C1405DJR), Buenos Aires, Argentina
| | - Andres Porta
- Museo Argentino de Ciencias Naturales “Bernardino Rivadavia” (MACN-CONICET), Av. Angel Gallardo 470, (C1405DJR), Buenos Aires, Argentina
| | - Ezequiel Mabragaña
- Grupo de Biotaxonomía Morfológica y Molecular de Peces (BIMOPE), Instituto de Investigaciones Marinas y Costeras, Facultad de Ciencias Exactas y Naturales, Universidad Nacional de Mar del Plata (CONICET), Dean Funes 3350, (B7600), Mar del Plata, Argentina
| | - Emanuel Grassi
- Instituto Misionero de Biodiversidad (IMiBio), Ruta N12 km 5, (N3370), Puerto Iguazú, Misiones, Argentina
| | - Jorge Palermo
- Departamento de Biología, Facultad de Ciencias Naturales, Universidad Nacional de la Patagonia San Juan Bosco (CONICET), Ruta 259 km 16.4, (9000), Esquel, Chubut, Argentina
- Unidad de Microanálisis y Métodos Físicos en Química Orgánica (UMYMFOR-CONICET), Universidad de Buenos Aires, Ciudad Universitaria, Pabellón 2, (1428), Buenos Aires, Argentina
| | - Belen Bukowski
- Museo Argentino de Ciencias Naturales “Bernardino Rivadavia” (MACN-CONICET), Av. Angel Gallardo 470, (C1405DJR), Buenos Aires, Argentina
| | - Pablo Tubaro
- Museo Argentino de Ciencias Naturales “Bernardino Rivadavia” (MACN-CONICET), Av. Angel Gallardo 470, (C1405DJR), Buenos Aires, Argentina
| | - Nahuel Schenone
- Centro de Investigaciones Antonia Ramos (CIAR), Fundación Bosques Nativos Argentinos, Camino Balneario s/n, Villa Bonita, Misiones, Argentina
| |
Collapse
|
8
|
Zhang Z, Li C, Wang SH, Zhang FM, Han X, Tu YQ, Zhang XM. Tandem S N2' nucleophilic substitution/oxidative radical cyclization of aryl substituted allylic alcohols with 1,3-dicarbonyl compounds. Org Biomol Chem 2018; 15:3239-3247. [PMID: 28332678 DOI: 10.1039/c7ob00620a] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
A novel and efficient tandem SN2' nucleophilic substitution/oxidative radical cyclization reaction of aryl substituted allylic alcohols with 1,3-dicarbonyl compounds has been developed by using Mn(OAc)3 as an oxidant, which enables the expeditious synthesis of polysubstituted dihydrofuran (DHF) derivatives in moderate to high yields. The use of weakly acidic hexafluoroisopropanol (HFIP) as the solvent rather than AcOH has successfully improved the yields and expanded the substrate scope of this type of radical cyclization reactions. Mechanistic studies confirmed the cascade reaction process involving a final radical cyclization.
Collapse
Affiliation(s)
- Zhen Zhang
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
| | | | | | | | | | | | | |
Collapse
|
9
|
Lee SW, Song JG, Hwang BS, Kim DW, Lee YJ, Woo EE, Kim JY, Lee IK, Yun BS. Lipoxygenase Inhibitory Activity of Korean Indigenous Mushroom Extracts and Isolation of an Active Compound from Phellinus baumii. MYCOBIOLOGY 2014; 42:185-188. [PMID: 25071389 PMCID: PMC4112236 DOI: 10.5941/myco.2014.42.2.185] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/14/2014] [Accepted: 05/20/2014] [Indexed: 06/03/2023]
Abstract
We investigated a total of 335 samples of Korean native mushroom extracts as part of our lipoxygenase (LOX) inhibitor screening program. Among the mushroom-methanolic extracts we investigated, 35 exhibited an inhibitory activity greater than 30% against LOX at a concentration of 100 µg/mL. Especially, Collybia maculata, Tylopilus neofelleus, Strobilomyces confusus, Phellinus gilvus, P. linteus, P. baumii, and Inonotus mikadoi exhibited relatively potent LOX inhibitory activities of 73.3%, 51.6%, 52.4%, 66.7%, 59.5%, 100.0%, and 85.2%, respectively. Bioassay-guided fractionation led to the isolation of inoscavin A from the methanolic extract of P. baumii, which showed the most potent activity and was identified by spectroscopic methods. Specifically, inoscavin A exhibited potent LOX inhibitory activity with an IC50 value of 6.8 µM.
Collapse
Affiliation(s)
- Seung Woong Lee
- Division of Biotechnology and Advanced Institute of Environment and Bioscience, Chonbuk National University, Iksan 570-752, Korea
| | - Ja-Gyeong Song
- Division of Biotechnology and Advanced Institute of Environment and Bioscience, Chonbuk National University, Iksan 570-752, Korea
| | - Byung Soon Hwang
- Division of Biotechnology and Advanced Institute of Environment and Bioscience, Chonbuk National University, Iksan 570-752, Korea
| | - Dae-Won Kim
- Division of Biotechnology and Advanced Institute of Environment and Bioscience, Chonbuk National University, Iksan 570-752, Korea
| | - Yoon-Ju Lee
- Division of Biotechnology and Advanced Institute of Environment and Bioscience, Chonbuk National University, Iksan 570-752, Korea
| | - E-Eum Woo
- Division of Biotechnology and Advanced Institute of Environment and Bioscience, Chonbuk National University, Iksan 570-752, Korea
| | - Ji-Yul Kim
- Division of Biotechnology and Advanced Institute of Environment and Bioscience, Chonbuk National University, Iksan 570-752, Korea
| | - In-Kyoung Lee
- Division of Biotechnology and Advanced Institute of Environment and Bioscience, Chonbuk National University, Iksan 570-752, Korea
| | - Bong-Sik Yun
- Division of Biotechnology and Advanced Institute of Environment and Bioscience, Chonbuk National University, Iksan 570-752, Korea
| |
Collapse
|
10
|
Kim SE, Hwang BS, Song JG, Lee SW, Lee IK, Yun BS. New bioactive compounds from korean native mushrooms. MYCOBIOLOGY 2013; 41:171-6. [PMID: 24493936 PMCID: PMC3905119 DOI: 10.5941/myco.2013.41.4.171] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/16/2013] [Accepted: 12/16/2013] [Indexed: 05/08/2023]
Abstract
Mushrooms are ubiquitous in nature and have high nutritional attributes. They have demonstrated diverse biological effects and therefore have been used in treatments of various diseases, including cancer, diabetes, bacterial and viral infections, and ulcer. In particular, polysaccharides, including β-glucan, are considered as the major constituents responsible for the biological activity of mushrooms. Although an overwhelming number of reports have been published on the importance of polysaccharides as immunomodulating agents, not all of the healing properties found in these mushrooms could be fully accounted for. Recently, many research groups have begun investigations on biologically active small-molecular weight compounds in wild mushrooms. In this mini-review, both structural diversity and biological activities of novel bioactive substances from Korean native mushrooms are described.
Collapse
Affiliation(s)
- Seong-Eun Kim
- Division of Biotechnology and Advanced Institute of Environment and Bioscience, College of Environmental and Bioresource Sciences, Chonbuk National University, Iksan 570-752, Korea
| | - Byung Soon Hwang
- Division of Biotechnology and Advanced Institute of Environment and Bioscience, College of Environmental and Bioresource Sciences, Chonbuk National University, Iksan 570-752, Korea
| | - Ja-Gyeong Song
- Division of Biotechnology and Advanced Institute of Environment and Bioscience, College of Environmental and Bioresource Sciences, Chonbuk National University, Iksan 570-752, Korea
| | - Seung Woong Lee
- Division of Biotechnology and Advanced Institute of Environment and Bioscience, College of Environmental and Bioresource Sciences, Chonbuk National University, Iksan 570-752, Korea
| | - In-Kyoung Lee
- Division of Biotechnology and Advanced Institute of Environment and Bioscience, College of Environmental and Bioresource Sciences, Chonbuk National University, Iksan 570-752, Korea
| | - Bong-Sik Yun
- Division of Biotechnology and Advanced Institute of Environment and Bioscience, College of Environmental and Bioresource Sciences, Chonbuk National University, Iksan 570-752, Korea
| |
Collapse
|
11
|
Eroğlu HE, Koca I, Yıldırım I. In vitro cytotoxic potential of newly synthesized furo[3,2-c]pyran-4-one derivatives in cultured human lymphocytes. Cytotechnology 2011; 63:407-13. [PMID: 21573773 DOI: 10.1007/s10616-011-9358-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2010] [Accepted: 04/19/2011] [Indexed: 10/18/2022] Open
Abstract
The in vitro cytotoxic potentials of Furo[3,2-c]pyran-4-one derivatives in human lymphocytes were investigated. Blood samples were obtained from six healthy donors, non-smoking volunteers, which were incubated and exposed to increasing concentrations (0.05, 0.1, 0.5, 1 and 2 mg/mL) of Furo[3,2-c]pyran-4-one derivatives which are methyl 2-methoxy-7-(4-methylbenzoyl)-6-(4-methylphenyl)-4-oxo-4H-furo[3,2-c]pyran-3-carboxylate (1a) and methyl 2-methoxy-7-(4-methoxybenzoyl)-6-(4-methoxyphenyl)-4-oxo-4H-furo[3,2-c]pyran-3-carboxylate (1b). Compounds 1a and 1b induced micronucleus, mitotic and replication indexes in human lymphocytes (1 and 2 mg/mL). The increases of micronucleus, mitotic and replication indexes show that compounds at high concentrations may become cytotoxic, genotoxic and carcinogenic.
Collapse
Affiliation(s)
- Halil Erhan Eroğlu
- Department of Biology, Faculty of Science and Art, Bozok University, 66200, Yozgat, Turkey,
| | | | | |
Collapse
|
12
|
Lee IK, Yun BS. Styrylpyrone-class compounds from medicinal fungi Phellinus and Inonotus spp., and their medicinal importance. J Antibiot (Tokyo) 2011; 64:349-59. [PMID: 21304532 DOI: 10.1038/ja.2011.2] [Citation(s) in RCA: 116] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Members of the genera Phellinus and Inonotus, including P. linteus, P. igniarius, P. ribis, I. obliquus and I. xeranticus are well-known medicinal fungi (mushrooms) and have been used in treatment of cancer, diabetes, bacterial and viral infections and ulcer. Adverse effects of these medicinal mushrooms have not yet been reported, indicating the safe nature of these mushrooms. Polysaccharides, particularly β-glucan, are considered the compounds responsible for the biological activity of medicinal mushrooms. However, there is only a limited amount of evidence to indicate that polysaccharides are in fact responsible for the biological effects of these medicinal mushrooms. Recently, many research groups have begun identification of active low-MW compounds in medicinal mushrooms, with a focus on the yellow polyphenol pigments, which are composed of a styrylpyrone class of compounds. Interestingly, a representative group of medicinal fungi, including P. linteus, P. igniarius, P. ribis, I. obliquus and I. xeranticus were shown to produce a large and diverse range of styrylpyrone-type polyphenol pigments that exhibited various biological activities, including anti-oxidative, anti-inflammatory, cytotoxic, anti-platelet aggregation, anti-diabetic, anti-dementia and anti-viral effects. Styrylpyrone pigments in mushrooms are thought to have a role similar to that of flavonoids in plants. The unique and unprecedented carbon skeleton of fused styrylpyrone might be an attractive molecular scaffold for pharmacological applications. In this review, the structural diversity, biological effects and biogenesis of styrylpyrone-class polyphenols from medicinal fungi are described.
Collapse
Affiliation(s)
- In-Kyoung Lee
- Division of Biotechnology, College of Environmental and Bioresource Sciences, Chonbuk National University, Jeonbuk, Korea
| | | |
Collapse
|
13
|
Lee YS, Kang IJ, Won MH, Lee JY, Kim JK, Lim SS. Inhibition of Protein Tyrosine Phosphatase 1β by Hispidin Derivatives Isolated from the Fruiting Body of Phellinus linteus. Nat Prod Commun 2010. [DOI: 10.1177/1934578x1000501218] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Protein tyrosine phosphatase 1β (PTP1β) acts as a negative regulator of insulin signaling. Selective inhibition of PTP1β has served as a potential drug target for the treatment of type 2 diabetes mellitus. We evaluated the inhibitory effect of Phellinus linteus against PTP1β as part of our ongoing search for natural therapeutic and preventive agents for diabetes mellitus. Fractions of the P. linteus extract were found to exhibit significant inhibitory activities against PTP1β. In an attempt to identify bioactive components, we isolated, from the most active ethyl acetate fraction, five hispidin derivatives (phelligridimer A, davallialactone, hypholomine B, interfungins A, and inoscavin A) and four phenolic compounds (protocatechuic acid, protocatechualdehyde, caffeic acid, and ellagic acid). The chemical structures of these compounds were elucidated from spectroscopic evidence and by comparison with published data. All the compounds strongly inhibited PTP1β activity in an in vitro assay; their IC50 values ranged from 9.0 ± 0.01 to 58.2 ± 0.3 μM. Our results indicated that the hispidin skeleton may be an important moiety for inhibitory activity of the above compounds against PTP1β. Thus, hispidin derivatives could be a potent new class of natural PTP1β inhibitors.
Collapse
Affiliation(s)
- Yeon Sil Lee
- Center for Efficacy Assessment and Development of Functional Foods and Drugs, Regional Innovation Center, Hallym University, Chuncheon, 200-702, Gangwon-do, South Korea
| | - Il-Jun Kang
- Department of Food Science and Nutrition Hallym University, Chuncheon 200-702, Gangwon-do, South Korea
| | - Moo Ho Won
- Department of Neurobiology, School of Medicine, Kangwon National University, Chuncheon, 200-701, Gangwon-do, South Korea
| | - Jae-Yong Lee
- Department of Biochemistry, College of Medicine, Hallym University, Chuncheon, 200-702, Gangwon-do, South Korea
- Institute of Natural Medicine, Hallym University, Chuncheon, 200-702, Gangwon-do, South Korea
| | - Jin Kyu Kim
- Institute of Natural Medicine, Hallym University, Chuncheon, 200-702, Gangwon-do, South Korea
| | - Soon Sung Lim
- Department of Food Science and Nutrition Hallym University, Chuncheon 200-702, Gangwon-do, South Korea
- Institute of Natural Medicine, Hallym University, Chuncheon, 200-702, Gangwon-do, South Korea
| |
Collapse
|
14
|
Lee IK, Han MS, Lee MS, Kim YS, Yun BS. Styrylpyrones from the medicinal fungus Phellinus baumii and their antioxidant properties. Bioorg Med Chem Lett 2010; 20:5459-61. [DOI: 10.1016/j.bmcl.2010.07.093] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2010] [Revised: 07/19/2010] [Accepted: 07/21/2010] [Indexed: 11/16/2022]
|
15
|
Koca İ, Yıldırım İ, Şahin E. Multicomponent Reactions of Furan-2,3-diones: Synthesis and Characterizations of Furo[3,2-c]pyran-4-ones. Helv Chim Acta 2010. [DOI: 10.1002/hlca.200900374] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
|
16
|
Zheng W, Miao K, Zhang Y, Pan S, Zhang M, Jiang H. Nitric oxide mediates the fungal-elicitor-enhanced biosynthesis of antioxidant polyphenols in submerged cultures of Inonotus obliquus. Microbiology (Reading) 2009; 155:3440-3448. [DOI: 10.1099/mic.0.030650-0] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Abstract
A fungal elicitor prepared from the cell debris of the plant-pathogenic ascomycete Alternaria alternata induces multiple responses by Inonotus obliquus cells, including an increase in generation of nitric oxide (NO), activity of phenylalanine ammonia lyase (PAL) and accumulation of total mycelial phenolic compounds (TMP), but does not trigger production of oxylipins or jasmonic acid (JA). The role of NO in TMP production was investigated via the effects of the NO-specific scavenger 2-(4-carboxyphenyl)-4,4,5,5-tetramethylimidazoline-1-oxyl-3-oxide (cPITO) and the nitric oxide synthase (NOS) inhibitor aminoguanidine (AG). TMP profiles were assayed using 1H NMR spectroscopy combining multivariate pattern recognition strategies. Pretreatment of I. obliquus mycelia with cPITO or AG suppressed not only elicitor-enhanced NO generation and PAL activity, but also the elicitor-induced increase in TMP production. This TMP reduction by either a NO scavenger or a NOS inhibitor was reversed by exogenous addition of either a NO donor, sodium nitroprusside, or JA separately. NMR-based metabonomic analysis of TMP profiles showed that the induced TMP were hispidin analogues including inoscavins, phelligridins, davallialactone and methyldavallialactone, which possess high antioxidant activities. Thus, NO mediates an elicitor-induced increase in production of antioxidant polyphenols in I. obliquus via a signalling pathway independent of oxylipins or JA, a mechanism which differs from those in some higher plants.
Collapse
Affiliation(s)
- Weifa Zheng
- Key Laboratory for Biotechnology on Medicinal Plants of Jiangsu Province, Xuzhou Normal University, Xuzhou 221116, PR China
| | - Kangjie Miao
- Key Laboratory for Biotechnology on Medicinal Plants of Jiangsu Province, Xuzhou Normal University, Xuzhou 221116, PR China
| | - Yanxia Zhang
- Key Laboratory for Biotechnology on Medicinal Plants of Jiangsu Province, Xuzhou Normal University, Xuzhou 221116, PR China
| | - Shenyuan Pan
- School of Life Sciences, Xuzhou Normal University, Xuzhou 221116, PR China
| | - Meimei Zhang
- Key Laboratory for Biotechnology on Medicinal Plants of Jiangsu Province, Xuzhou Normal University, Xuzhou 221116, PR China
| | - Hong Jiang
- Key Laboratory for Biotechnology on Medicinal Plants of Jiangsu Province, Xuzhou Normal University, Xuzhou 221116, PR China
| |
Collapse
|
17
|
Zheng W, Zhang M, Zhao Y, Miao K, Jiang H. NMR-based metabonomic analysis on effect of light on production of antioxidant phenolic compounds in submerged cultures of Inonotus obliquus. BIORESOURCE TECHNOLOGY 2009; 100:4481-4487. [PMID: 19433352 DOI: 10.1016/j.biortech.2009.04.027] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/13/2009] [Revised: 04/10/2009] [Accepted: 04/13/2009] [Indexed: 05/27/2023]
Abstract
This study was designed to investigate the light effect on biosynthesis of antioxidant phenolic compounds by Inonotus obliquus grown in submerged cultures using (1)H NMR spectroscopy combining multivariate pattern recognition strategies. I. obliquus were exposed to a range of light conditions and resultant data were compared to those from field-grown sclerotia and the mycelia grown in daylight. Daylight illumination inhibited biosynthesis of davallialactone and phelligridins and other hispidin analogs. Continuous darkness enhanced the formation of phelligridins, davallialactone and inoscavins. Phelligridins and davallialactone also occurred in the mycelia grown in blue and red light with levels lower than those found in darkness. In addition, polyphenols synthesized under daylight conditions showed less potential antioxidant activity than those determined with other light regimes. These findings demonstrate that light regulates biosynthesis of polyphenols in I. obliquus and their subsequent antioxidant activities, and (1)H NMR-based metabolic profiling is a cost-effective approach for evaluating light effects on fungal metabolisms.
Collapse
Affiliation(s)
- Weifa Zheng
- Key Laboratory for Biotechnology on Medicinal Plants of Jiangsu Province, Xuzhou Normal University, Xuzhou, China.
| | | | | | | | | |
Collapse
|
18
|
Methyl 2-methoxy-7-(4-methylbenzoyl)-4-oxo-6-p-tolyl-4H-furo[3,2-c]pyran-3-carboxylate:A combined experimental and theoretical investigation. J Mol Model 2009; 15:1193-201. [PMID: 19263095 DOI: 10.1007/s00894-009-0479-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2008] [Accepted: 01/28/2009] [Indexed: 10/21/2022]
Abstract
The title compound, methyl 2-methoxy-7-(4-methylbenzoyl)-4-oxo-6-p-tolyl-4H-furo[3,2-c]pyran-3-carboxylate (C(25)H(20)O(7)), was prepared and characterized by IR and single-crystal X-ray diffraction (XRD). The compound crystallizes in the triclinic space group P -1 with a = 8.9554(9) A, b = 10.0018(10) A, c = 12.7454(13) A, alpha = 67.678(7) degrees , beta = 89.359(8) degrees and gamma = 88.961(8) degrees . In addition to the molecular geometry from X-ray experiment, the molecular geometry and vibrational frequencies of the title compound in the ground state have been calculated using semiempirical AM1 and PM3 methods, as well as Hartree-Fock (HF) and density functional (B3LYP) levels of theory with 6-31G(d) basis set. To determine conformational flexibility, molecular energy profile of the title compound was obtained by semi-empirical (AM1) calculations with respect to two selected degrees of torsional freedom, which were varied from -180 degrees to +180 degrees in steps of 10 degrees . Besides, frontier molecular orbitals (FMO) analysis and thermodynamic properties of the title compound were performed by the B3LYP/6-31G(d) method.
Collapse
|
19
|
|
20
|
Lee YS, Kang YH, Jung JY, Kang IJ, Han SN, Chung JS, Shin HK, Lim SS. Inhibitory constituents of aldose reductase in the fruiting body of Phellinus linteus. Biol Pharm Bull 2008; 31:765-8. [PMID: 18379080 DOI: 10.1248/bpb.31.765] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
In an effort to characterize active principles for diabetic complication from medicinal mushroom, aldose reductase inhibitors were isolated from the fruiting body of Phellinus linteus and identified as hispidin (5), phelligridimer A (6), davallialactone (7), methyldavallialactone (8), hypholomine B (9), interfungins A (10), and inoscavin A (11), together with protocatechuic acid (1), protocatechualdehyde (2), caffeic acid (3), and ellagic acid (4). Their structures were elucidated by spectroscopic analyses. Among them, davallialactone (7), hypholomine B (9), and ellagic acid (4) exhibited potent rat lens aldose reductase and human recombinant aldose reductase inhibitory activity with IC50 values of 0.33, 0.82, 0.63 microM and 0.56, 1.28, 1.37 microM, respectively.
Collapse
Affiliation(s)
- Yeon Sil Lee
- Department of Food Science and Nutrition, Hallym University, Chuncheon 200-702, Korea
| | | | | | | | | | | | | | | |
Collapse
|
21
|
Kojima K, Ohno T, Inoue M, Mizukami H, Nagatsu A. Phellifuropyranone A: A New Furopyranone Compound Isolated from Fruit Bodies of Wild Phellinus linteus. Chem Pharm Bull (Tokyo) 2008; 56:173-5. [DOI: 10.1248/cpb.56.173] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Kazuo Kojima
- Graduate School of Pharmaceutical Sciences, Nagoya City University
- College of Pharmacy, Kinjo Gakuin University
- Laboratory of Medicinal Resources, School of Pharmacy, Aichi Gakuin University
| | - Takamasa Ohno
- Laboratory of Medicinal Resources, School of Pharmacy, Aichi Gakuin University
| | - Makoto Inoue
- Laboratory of Medicinal Resources, School of Pharmacy, Aichi Gakuin University
| | - Hajime Mizukami
- Graduate School of Pharmaceutical Sciences, Nagoya City University
| | - Akito Nagatsu
- Graduate School of Pharmaceutical Sciences, Nagoya City University
- College of Pharmacy, Kinjo Gakuin University
| |
Collapse
|
22
|
Lee YS, Kang YH, Jung JY, Lee S, Ohuchi K, Shin KH, Kang IJ, Park JHY, Shin HK, Lim SS. Protein Glycation Inhibitors from the Fruiting Body of Phellinus linteus. Biol Pharm Bull 2008; 31:1968-72. [DOI: 10.1248/bpb.31.1968] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Yeon Sil Lee
- Department of Food Science and Nutrition, Hallym University
| | - Young-Hee Kang
- Department of Food Science and Nutrition, Hallym University
| | - Ju-Young Jung
- College of Veterinary Medicine, Chungnam National University
| | - Sanghyun Lee
- Department of Applied Plant Science, Chung-Ang University
| | | | - Kuk Hyun Shin
- Korea Institute of Science and Technology Information
| | - Il-Jun Kang
- Department of Food Science and Nutrition, Hallym University
| | | | - Hyun-Kyung Shin
- Department of Food Science and Nutrition, Hallym University
- Center for Efficacy Assessment and Development of Functional Foods and Drugs, Regional Innovation Center, Hallym University
| | - Soon Sung Lim
- Department of Food Science and Nutrition, Hallym University
- Center for Efficacy Assessment and Development of Functional Foods and Drugs, Regional Innovation Center, Hallym University
| |
Collapse
|
23
|
Lee IK, Yun BS. Hispidin analogs from the mushroom Inonotus xeranticus and their free radical scavenging activity. Bioorg Med Chem Lett 2006; 16:2376-9. [PMID: 16488146 DOI: 10.1016/j.bmcl.2006.01.121] [Citation(s) in RCA: 50] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2006] [Revised: 01/23/2006] [Accepted: 01/27/2006] [Indexed: 11/17/2022]
Abstract
Three new free radical scavengers were isolated from the methanolic extract of the fruiting bodies of Inonotus xeranticus (Hymenochaetaceae), along with the known compound davallialactone. Their structures were established as hispidin analogs by extensive NMR spectral data. Compounds 3 and 4 displayed significant scavenging activity against the superoxide radical anion, ABTS radical cation, and DPPH radical, while 1 and 2 exhibited potent antioxidative activity only against ABTS radical cation.
Collapse
Affiliation(s)
- In-Kyoung Lee
- Korea Research Institute of Bioscience and Biotechnology, Yuseong, Daejeon 305-333, Republic of Korea
| | | |
Collapse
|
24
|
Wang Y, Wang SJ, Mo SY, Li S, Yang YC, Shi JG. Phelligridimer A, a Highly Oxygenated and Unsaturated 26-Membered Macrocyclic Metabolite with Antioxidant Activity from the FungusPhellinus igniarius. Org Lett 2005; 7:4733-6. [PMID: 16209522 DOI: 10.1021/ol0520875] [Citation(s) in RCA: 53] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
[structure: see text] A highly oxygenated and unsaturated 26-membered macrocyclic metabolite, phelligridimer A (1), has been isolated from the Chinese medicinal fungus Phellinus igniarius. Its structure was elucidated by spectroscopic methods. A possible biogenesis of 1 mediated by the fungal metabolite hispidin was postulated. Phelligridimer A showed antioxidant activity (IC50 of 10.2 microM) but was inactive to several human cancer cell lines (IC50 > 50 microM) and enzymes PTP1B (IC50 > 25 microM) and thrombin (IC50 > 10 microM).
Collapse
Affiliation(s)
- Ying Wang
- Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, People's Republic of China
| | | | | | | | | | | |
Collapse
|
25
|
Kim JP, Lee IK, Yun BS, Chung SH, Shim GS, Koshino H, Yoo ID. Ellagic acid rhamnosides from the stem bark of Eucalyptus globulus. PHYTOCHEMISTRY 2001; 57:587-591. [PMID: 11394863 DOI: 10.1016/s0031-9422(01)00146-7] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Four ellagic acid rhamnosides were isolated from the stem bark of Eucalyptus globulus. Their structures have been established on the basis of the analysis of their 1H NMR, 13C NMR, HMBC, IR and MS spectral data. The HMBC data of these compounds were most useful for their structure determinations, with these bring determined to be 3-O-methylellagic acid 3'-O-alpha-rhamnopyranoside, 3-O-methylellagic acid 3'-O-alpha-3''-O-acetylrhamnopyranoside, 3-O-methylellagic acid 3'-O-alpha-2''-O-acetylrhamnopyranoside, 3-O-methylellagic acid 3'-O-alpha-4''-O-acetylrhamnopyranoside, respectively. Their antioxidant activities were evaluated by measuring the inhibition of lipid peroxidation using rat liver microsomes, with IC50 values of 10.0-14.0 microg/ml.
Collapse
Affiliation(s)
- J P Kim
- Korea Research Institute of Bioscience and Biotechnology, Yusong, Taejon, South Korea
| | | | | | | | | | | | | |
Collapse
|