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Nguyen LTT, Dinh CP, Nguyen PTD, To HT, Nguyen DKA, Trinh DH, Ngo NTN, Nguyen LTT, Nguyen TN, Nguyen LHD, Trinh BTD. In vitro and in silico antioxidant and α-glucosidase inhibitory potential of compounds isolated from Garcinia gaudichaudii. Nat Prod Res 2023; 37:750-758. [PMID: 35727176 DOI: 10.1080/14786419.2022.2089985] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
Nine compounds including a new one, garcichaudiic acid (1), were isolated from the bark of G. gaudichaudii and their structures were characterized mainly by 1 D and 2 D NMR experiments. The antioxidant capacity of the isolated compounds was determined using DPPH radical scavenging assay and the anti-hyperglycemic activity was assessed by measuring the inhibitory effect against α-glucosidase. Among them, compound 4 showed higher antioxidant activity than the positive control, ascorbic acid, while both compounds 1 and 7 exhibited more significant α-glucosidase inhibitory activity than the reference drug acarbose. Molecular docking analysis of the bioactive compounds was also performed to examine the binding modes and key interactions with the catalytic site.
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Affiliation(s)
- Le-Thu T Nguyen
- Natural Product and Medicinal Chemistry Lab, Faculty of Chemistry, VNUHCM-University of Science (HCMUS), Ho Chi Minh City, Vietnam.,Vietnam National University Ho Chi Minh City, Ho Chi Minh City, Vietnam
| | - Chau-Phi Dinh
- Natural Product and Medicinal Chemistry Lab, Faculty of Chemistry, VNUHCM-University of Science (HCMUS), Ho Chi Minh City, Vietnam.,Vietnam National University Ho Chi Minh City, Ho Chi Minh City, Vietnam
| | - Phuong T D Nguyen
- Natural Product and Medicinal Chemistry Lab, Faculty of Chemistry, VNUHCM-University of Science (HCMUS), Ho Chi Minh City, Vietnam.,Vietnam National University Ho Chi Minh City, Ho Chi Minh City, Vietnam
| | - Huong T To
- Natural Product and Medicinal Chemistry Lab, Faculty of Chemistry, VNUHCM-University of Science (HCMUS), Ho Chi Minh City, Vietnam.,Vietnam National University Ho Chi Minh City, Ho Chi Minh City, Vietnam
| | - Dieu K A Nguyen
- Natural Product and Medicinal Chemistry Lab, Faculty of Chemistry, VNUHCM-University of Science (HCMUS), Ho Chi Minh City, Vietnam.,Vietnam National University Ho Chi Minh City, Ho Chi Minh City, Vietnam
| | - Duong H Trinh
- Natural Product and Medicinal Chemistry Lab, Faculty of Chemistry, VNUHCM-University of Science (HCMUS), Ho Chi Minh City, Vietnam.,Vietnam National University Ho Chi Minh City, Ho Chi Minh City, Vietnam
| | - Ngoc T N Ngo
- Natural Product and Medicinal Chemistry Lab, Faculty of Chemistry, VNUHCM-University of Science (HCMUS), Ho Chi Minh City, Vietnam.,Vietnam National University Ho Chi Minh City, Ho Chi Minh City, Vietnam.,Department of Analytical Chemistry, HCMUS, Ho Chi Minh City, Vietnam
| | - Ly T T Nguyen
- Natural Product and Medicinal Chemistry Lab, Faculty of Chemistry, VNUHCM-University of Science (HCMUS), Ho Chi Minh City, Vietnam.,Vietnam National University Ho Chi Minh City, Ho Chi Minh City, Vietnam
| | - Thanh-Nhan Nguyen
- Natural Product and Medicinal Chemistry Lab, Faculty of Chemistry, VNUHCM-University of Science (HCMUS), Ho Chi Minh City, Vietnam.,Vietnam National University Ho Chi Minh City, Ho Chi Minh City, Vietnam
| | - Lien-Hoa D Nguyen
- Natural Product and Medicinal Chemistry Lab, Faculty of Chemistry, VNUHCM-University of Science (HCMUS), Ho Chi Minh City, Vietnam.,Vietnam National University Ho Chi Minh City, Ho Chi Minh City, Vietnam.,Department of Organic Chemistry, HCMUS, Ho Chi Minh City, Vietnam
| | - Binh T D Trinh
- Natural Product and Medicinal Chemistry Lab, Faculty of Chemistry, VNUHCM-University of Science (HCMUS), Ho Chi Minh City, Vietnam.,Vietnam National University Ho Chi Minh City, Ho Chi Minh City, Vietnam.,Department of Analytical Chemistry, HCMUS, Ho Chi Minh City, Vietnam
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2
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Tran TTT, Nguyen TKA, Nguyen BN, Hoang TMN, Doan LP, Phan MG, Lee H, Kim DW, Lee JW. Six new polyoxygenated xanthones from Garcinia cowa and their neuroprotective effects on glutamate-mediated hippocampal neuronal HT22 cell death. Chem Biodivers 2022; 19:e202200376. [PMID: 35927784 DOI: 10.1002/cbdv.202200376] [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: 04/19/2022] [Accepted: 08/04/2022] [Indexed: 11/06/2022]
Abstract
Six new polyoxygenated xanthones, garcicowanones F-H (1-3), norcowanol A-B (4-5), and garcinone F (6) along with twelve known compounds 7-18 were obtained from the latex of Garcinia cowa Roxb. ex Choisy. All new compounds have a 1,3,7-trioxygenated or 1,3,6,7-tetraoxygenated xanthone nucleus and differ from majority of xanthones from G. cowa by hydrated side chains. Compounds 1, 7, 8 and 18 exhibited significant neuroprotective effects on glutamate-mediated hippocampal neuronal HT22 cell death. In particular, compound 1 exhibited the most potent neuroprotective effect with >80% cell viability in the concentration range of 2.9-115 µM. Further studies on compound 1 showed that it decreased cellular Ca2+ influx and inhibits cellular reactive oxygen species generation in HT22 cells. A Western blot analysis showed that MAPK phosphorylation, Bax, and AIF translocation dramatically increased upon treatment with 5 mM glutamate and decreased upon a co-treatment with compound 1.
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Affiliation(s)
- Thi Thu Thuy Tran
- Vietnam Academy of Science and Technology, Institute of Natural Products Chemistry, 1H, 18 Hoang Quoc Viet, Cau Giay, 122045, Hanoi, VIET NAM
| | - Thi Kim An Nguyen
- Vietnam Academy of Science and Technology, Chemistry, 1H, 18 Hoang Quoc Viet, Cau Giay, 122045, Hanoi, VIET NAM
| | - Bao Ngoc Nguyen
- Korea Institute of Science and Technology, Natural Product Research Center, 679 Saimdang-ro, Gyeongpo-dong, Gangneung-si, Gangwon-do, Gangneung, KOREA, REPUBLIC OF
| | - Thi Minh Nguyet Hoang
- Vietnam Academy of Science and Technology, Institute of Natural Products Chemistry, 1H, 18 Hoang Quoc Viet, Cau Giay, 122045, Hanoi, VIET NAM
| | - Lan Phuong Doan
- Vietnam Academy of Science and Technology, Institute of Natural Products Chemistry, 1H, 18 Hoang Quoc Viet, Cau Giay, 122045, Hanoi, VIET NAM
| | - Minh Giang Phan
- Vietnam National University Hanoi, Chemistry, 334 Nguyen Trai, 122045, Hanoi, VIET NAM
| | - Heesu Lee
- Gangneung-Wonju National University, College of Dentistry, 7, Jukheon-gil, Gangneung, KOREA, REPUBLIC OF
| | - Dae Won Kim
- Gangneung-Wonju National University, College of Dentistry, 7, Jukheon-gil, Gangneung, KOREA, REPUBLIC OF
| | - Jae Wook Lee
- Korea Institute of Science and Technology, Natural Product Research Center, 679 Saimdang-ro, Gyeongpo-dong, Gangneung-si, Gangwon-do, Gangneung, KOREA, REPUBLIC OF
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Theoretical study of keto-enol tautomerism in 7-epi-clusianone by quantum chemical calculations of NMR chemical shifts. J Mol Model 2022; 28:239. [PMID: 35908141 DOI: 10.1007/s00894-022-05234-4] [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: 03/07/2022] [Accepted: 07/14/2022] [Indexed: 10/16/2022]
Abstract
Plants from the Garcinia genus have been used worldwide due to their therapeutic properties. Among the various metabolites isolated from this genus, 7-epi-clusianone, a tetraprenylated benzophenone, stands out for its wide range of identified biological activities. This benzophenone can exist in five tautomeric forms, although the benzene-d6 and chloroform-d3 solution nuclear magnetic resonance (NMR) spectra revealed only two tautomeric forms (B and C) in equilibrium, with concentration ratio depending on the solvent in which the spectrum was obtained. Calculated energy values suggested that tautomeric forms B and E would be prevalent in benzene-d6 solution, in contrast to the experimental data. Considering this conflicting result, we employed the statistical DP4 + method based on 13C and 1H NMR chemical shift calculations, in the gas phase and in benzene-d6 solution, to confirm that the B and C tautomeric forms of 7-epi-clusianone are the most prevalent in the experimental conditions.
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Giang PM, Otsuka H. New Compounds and Potential Candidates for Drug Discovery from Medicinal Plants of Vietnam. Chem Pharm Bull (Tokyo) 2018; 66:493-505. [PMID: 29710046 DOI: 10.1248/cpb.c17-00628] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The study of natural products introduces interesting new bioorganic structures and potential candidates for the drug discovery stage in the development of innovative drugs. Vietnam enjoys a broad biodiversity of native plant species, microorganisms, marine organisms, and a long tradition of using herbal remedies. Thus, the study of medicinal plants in determining the basis of their efficacy and safety is an important task for modern researchers in Vietnam. The present review covers literature on new compounds elucidated from the systematic study of medicinal plants within some popular genera in Vietnam, as well as their significant biological activities.
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Affiliation(s)
- Phan Minh Giang
- Faculty of Chemistry, VNU University of Science, Vietnam National University
| | - Hideaki Otsuka
- Faculty of Pharmacy, Division of Natural Product Chemistry, Yasuda Women's University
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Biloa BM, Ho R, Marti G, Lannang AM, Wolfender JL, Hostettmann K. A Rapid Determination and Quantification of Three Biologically Active Polyisoprenylated Benzophenones using Liquid Chromatography-Tandem Mass Spectrometry (MRM) Method in Five Garcinia species from Cameroon. Nat Prod Commun 2017. [DOI: 10.1177/1934578x1701201220] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Following investigation of Garcinia genus, a sensitive, rapid and simple reversed-phase high performance liquid chromatography-electrospray ionization mass spectrometry method has been developed for the identification and quantification of three polyisoprenylated benzophenones, garcinol (1), isogarcinol (2) and 7- epi-clusianone (3), in the extracts of five Garcinia species from Cameroon. The separation of those compounds was achieved on a RP-18 column using a solvent system consisting of a mixture of acetonitrile-water-formic acid as a mobile phase in a gradient elution mode. The identification of the three compounds was determined on a triple quadripole mass spectrometer with ESI interface operating in the negative mode. A multiple reaction monitoring (MRM) method was developed for the quantification of these polyisoprenylated benzophenones in the extracts of the Garcinia species. The method was validated through intra- and inter-day precision, with the relative standard deviation (RSD) less than 6%, limits of detection (LOD) and limits of quantification (LOQ) <1 ng. Overall recoveries ranged from 94% to 104%, with RSDs ranging from 0.8% to 4.5%. The results indicated that the fruits of G. preussii and the roots of G. brevipedicellata are good source of garcinol (1) and isogarcinol (2) respectively.
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Affiliation(s)
- Bernadette Messi Biloa
- Department of Chemistry, higher teachers training College, University of Maroua, P.O. Box. 46, Maroua, Cameroon
- School of Pharmaceutical Sciences, University of Geneva, University of Lausanne, Quai Ernest-Ansermet, 30, CH-1211, Switzerland
| | - Raimana Ho
- School of Pharmaceutical Sciences, University of Geneva, University of Lausanne, Quai Ernest-Ansermet, 30, CH-1211, Switzerland
- UMR 241 EIO, University of French Polynesia, B.P. 6570, 98702 Faa'a, Tahiti, French Polynesia
| | - Guillaume Marti
- School of Pharmaceutical Sciences, University of Geneva, University of Lausanne, Quai Ernest-Ansermet, 30, CH-1211, Switzerland
| | - Alain Meli Lannang
- Department of Chemistry, higher teachers training College, University of Maroua, P.O. Box. 46, Maroua, Cameroon
| | - Jean-Luc Wolfender
- School of Pharmaceutical Sciences, University of Geneva, University of Lausanne, Quai Ernest-Ansermet, 30, CH-1211, Switzerland
| | - Kurt Hostettmann
- School of Pharmaceutical Sciences, University of Geneva, University of Lausanne, Quai Ernest-Ansermet, 30, CH-1211, Switzerland
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Lannang AM, Sema DK, Tatsimo SJN, Tankeu VFT, Tegha HF, Wansi JD, Shiono Y, Sewald N. A new depsidone derivative from the leaves of Garcinia polyantha. Nat Prod Res 2017; 32:1033-1038. [DOI: 10.1080/14786419.2017.1378201] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Alain Meli Lannang
- Department of Chemistry, Higher Teachers’ Training College, University of Maroua, Maroua, Cameroon
- Faculty of Agriculture, Department of Food, Life, and Environmental Science, Yamagata University, Tsuruoka, Japan
- Department of Chemistry, Organic and Bioorganic Chemistry, Bielefeld University, Bielefeld, Germany
| | - Denis Kehdinga Sema
- Department of Chemistry, Higher Teachers’ Training College, University of Maroua, Maroua, Cameroon
| | - Simplice J. N. Tatsimo
- Department of Chemistry, Higher Teachers’ Training College, University of Maroua, Maroua, Cameroon
| | - V. F. Tsague Tankeu
- Department of Chemistry, Higher Teachers’ Training College, University of Maroua, Maroua, Cameroon
| | - Hycienth F. Tegha
- Department of Chemistry, Higher Teachers’ Training College, University of Maroua, Maroua, Cameroon
| | - Jean Duplex Wansi
- Faculty of Sciences, Department of Chemistry, University of Douala, Douala, Cameroon
| | - Yoshihito Shiono
- Department of Chemistry, Organic and Bioorganic Chemistry, Bielefeld University, Bielefeld, Germany
| | - Norbert Sewald
- Faculty of Agriculture, Department of Food, Life, and Environmental Science, Yamagata University, Tsuruoka, Japan
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Auranwiwat C, Laphookhieo S, Rattanajak R, Kamchonwongpaisan S, Pyne SG, Ritthiwigrom T. Antimalarial polyoxygenated and prenylated xanthones from the leaves and branches of Garcinia mckeaniana. Tetrahedron 2016. [DOI: 10.1016/j.tet.2016.09.018] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Jouda JB, Tamokou JDD, Mbazoa CD, Sarkar P, Bag PK, Wandji J. Anticancer and antibacterial secondary metabolites from the endophytic fungus Penicillium sp. CAM64 against multi-drug resistant Gram-negative bacteria. Afr Health Sci 2016; 16:734-743. [PMID: 27917206 DOI: 10.4314/ahs.v16i3.13] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
BACKGROUND The emergence of multiple-drug resistance bacteria has become a major threat and thus calls for an urgent need to search for new effective and safe anti-bacterial agents. OBJECTIVES This study aims to evaluate the anticancer and antibacterial activities of secondary metabolites from Penicillium sp., an endophytic fungus associated with leaves of Garcinia nobilis. METHODS The culture filtrate from the fermentation of Penicillium sp. was extracted and analyzed by liquid chromatography-mass spectrometry, and the major metabolites were isolated and identified by spectroscopic analyses and by comparison with published data. The antibacterial activity of the compounds was assessed by broth microdilution method while the anticancer activity was determined by the 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide assay. RESULTS The fractionation of the crude extract afforded penialidin A-C (1-3), citromycetin (4), p-hydroxyphenylglyoxalaldoxime (5) and brefelfin A (6). All of the compounds tested here showed antibacterial activity (MIC = 0.50 - 128 µg/mL) against Gramnegative multi-drug resistance bacteria, Vibrio cholerae (causative agent of dreadful disease cholera) and Shigella flexneri (causative agent of shigellosis), as well as the significant anticancer activity (LC50 = 0.88 - 9.21 µg/mL) against HeLa cells. CONCLUSION The results obtained indicate that compounds 1-6 showed good antibacterial and anticancer activities with no toxicity to human red blood cells and normal Vero cells.
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Shinkai Y, Yamanaka I, Duong HHT, Quynh NT, Kanaho Y, Kumagai Y. Garcinia vilersiana bark extract activates the Nrf2/HO-1 signaling pathway in RAW264.7 cells. J Toxicol Sci 2014; 38:875-8. [PMID: 24213006 DOI: 10.2131/jts.38.875] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Abstract
Garcinia vilersiana is a traditional medicinal plant in Vietnam. The petroleum ether extract of stem bark of Garcinia vilersiana (GVE) was prepared to evaluate its potential to activate Nrf2, a transcription factor of antioxidant and detoxifying enzymes. Exposure of mouse macrophage RAW264.7 cells to GVE (0.625-2.5 µg/ml) resulted in a significant activation of Nrf2, as evaluated by nuclear accumulation of this transcription factor, and increased antioxidant response element (ARE) binding activity in a time- and concentration-dependent manner. As a result, GVE caused ARE-dependent up-regulation of heme oxygenase-1 (HO-1) in the cells. These results suggest that GVE contains components that have the ability to activate the Nrf2/ARE/HO-1 signaling pathway, leading to cellular protection.
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Affiliation(s)
- Yasuhiro Shinkai
- Doctoral Program in Biomedical Sciences, Graduate School of Comprehensive Human Sciences, University of Tsukuba
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Fouotsa H, Tatsimo SJ, Neumann B, Michalek C, Mbazoa CD, Nkengfack AE, Sewald N, Lannang AM. A new xanthone derivative from twigs of Garcinia nobilis. Nat Prod Res 2014; 28:1030-6. [DOI: 10.1080/14786419.2014.903398] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- Hugues Fouotsa
- Department of Organic Chemistry, Faculty of Science, University of Yaoundé I, P.O. Box 812, Yaoundé, Cameroon
- Department of Chemistry, Organic and Bioorganic Chemistry, Bielefeld University, P.O. Box 100131, 33501 Bielefeld, Germany
| | - Simplice J.N. Tatsimo
- Department of Chemistry, Higher Teachers' Training College, University of Maroua, P.O. Box 55, Maroua, Cameroon
| | - Beate Neumann
- Inorganic and Structural Chemistry, Department of Chemistry, Bielefeld University, Bielefeld, Germany
| | - Carmela Michalek
- Department of Chemistry, Organic and Bioorganic Chemistry, Bielefeld University, P.O. Box 100131, 33501 Bielefeld, Germany
| | - Celine Djama Mbazoa
- Department of Organic Chemistry, Faculty of Science, University of Yaoundé I, P.O. Box 812, Yaoundé, Cameroon
| | - Augustin Ephrem Nkengfack
- Department of Organic Chemistry, Faculty of Science, University of Yaoundé I, P.O. Box 812, Yaoundé, Cameroon
| | - Norbert Sewald
- Department of Chemistry, Organic and Bioorganic Chemistry, Bielefeld University, P.O. Box 100131, 33501 Bielefeld, Germany
| | - Alain Meli Lannang
- Department of Chemistry, Organic and Bioorganic Chemistry, Bielefeld University, P.O. Box 100131, 33501 Bielefeld, Germany
- Department of Chemistry, Higher Teachers' Training College, University of Maroua, P.O. Box 55, Maroua, Cameroon
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Abstract
Xanthones are one of the biggest classes of compounds in natural product chemistry. A number of xanthones have been isolated from natural sources of higher plants, fungi, ferns, and lichens. They have gradually risen to great importance because of their medicinal properties. This review focuses on the types, isolation, characterization, biological applications, and biosynthesis of naturally occurring xanthones isolated so far. Different physicochemical and instrumental methods such as liquid-solid and liquid-liquid extraction, TLC, flash chromatography, column chromatography, IR, 1H NMR and 13C NMR spectroscopy, GLC, HPLC, GC, and LCMS have been widely used for isolation and structural elucidation of xanthones. Hepatoprotective, anticarcinogenic, antileprosy, antimalarial, antioxidant, anticholinergic, mutagenicity, radioprotective, immunomodulatory, antibone resorption, antiparasitic, neuraminidase inhibitory, anticomplement, antibacterial, antifungal, algicidal, anti-HIV, cardioprotective, antitumoral, antidiabetes, antihyperlipidemic, antiatherogenic, anti-inflammatory, antiulcer, antidiabetic, hypolipidemic, analgesic, antiasthmatic, antihistaminic, antiamoebic, diuretic, antidiarrheal, larvicidal, and ovicidal activities have been reported for natural occurring xanthones. To a certain extent, this review provides necessary foundation for further research and development of new medicines.
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Ee G, Foo C, Jong V, Ismail N, Sukari M, Yap YT, Awang K. A new xanthone fromGarcinia nitida. Nat Prod Res 2012; 26:830-5. [DOI: 10.1080/14786419.2011.559640] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
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Nguyen HD, Trinh BTD, Tran QN, Nguyen HD, Pham HD, Hansen PE, Duus F, Connolly JD, Nguyen LHD. Friedolanostane, friedocycloartane and benzophenone constituents of the bark and leaves of Garcinia benthami. PHYTOCHEMISTRY 2011; 72:290-295. [PMID: 21168174 DOI: 10.1016/j.phytochem.2010.11.016] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/26/2010] [Revised: 08/06/2010] [Accepted: 11/15/2010] [Indexed: 05/30/2023]
Abstract
Friedolanostanes, (22Z,24E)-3β-acetoxy-9α-hydroxy-17,14-friedolanosta-14,22,24-trien-26-oic acid, (22Z,24E)-3β,9α-dihydroxy-17,14-friedolanosta-14,22,24-trien-26-oic acid, (22Z,24E)-9α-hydroxy-3-oxo-17,14-friedolanosta-14,22,24-trien-26-oic acid, a friedocycloartane, (22Z,24E)-3α-hydroxy-17,13-friedocycloarta-12,22,24-trien-26-oic acid, and a benzophenone, benthaphenone, together with known compounds (22Z,24E)-3α,9α-dihydroxy-17,13-friedolanosta-12,22,24-trien-26-oic acid, methyl (24E)-3α,23-dihydroxy-17,14-friedolanosta-8,14,24-trien-26-oate, glutinol, lupeol, and stigmasterol, were isolated from leaves and bark of Garcinia benthami. Their structures were elucidated using spectroscopic techniques, mainly 1-D and 2-D NMR spectroscopy, and chemical correlations.
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Affiliation(s)
- Hiep D Nguyen
- Faculty of Chemistry, Ho Chi Minh City University of Science (HCMUS), Ho Chi Minh City, Viet Nam
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Chen Y, Yang GZ, Zhong FF, He HW. Two New Prenylated Xanthones from the Bark of Garcinia xanthochymus. B KOREAN CHEM SOC 2010. [DOI: 10.5012/bkcs.2010.31.11.3418] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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15
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Li J, Guo WJ, Yang QY. Effects of ursolic acid and oleanolic acid on human colon carcinoma cell line HCT15. World J Gastroenterol 2002; 8:493-5. [PMID: 12046077 PMCID: PMC4656428 DOI: 10.3748/wjg.v8.i3.493] [Citation(s) in RCA: 122] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/20/2001] [Revised: 01/13/2002] [Accepted: 02/07/2002] [Indexed: 02/06/2023] Open
Abstract
AIM Ursolic acid (UA) and oleanolic acid (OA) are triperpene acids having a similar chemical structure and are distributed wildly in plants all over the world. In recent years, it was found that they had marked anti-tumor effects. There is little literature currently available regarding their effects on colon carcinoma cells. The present study was designed to investigate their inhibitory effects on human colon carcinoma cell line HCT15. METHODS HCT15 cells were cultured with different drugs. The treated cells were stained with hematoxylin-eosin and their morphologic changes observed under a light microscope. The cytotoxicity of these drugs was evaluated by tetrazolium dye assay. Cell cycle analysis was performed by flow cytometry (FCM). Data were expressed as means +/-SEM and Analysis of variance and Student' t-test for individual comparisons. RESULTS Twenty-four to 72 h after UA or OA 60 micromol/L treatment, the numbers of dead cells and cell fragments were increased and most cells were dead at the 72nd hour. The cytotoxicity of UA was stronger than that of OA. Seventy-eight hours after 30 micromol/L of UA or OA treatment, a number of cells were degenerated, but cell fragments were rarely seen. The IC(50) values for UA and OA were 30 and 60 micromol/L, respectively. Proliferation assay showed that proliferation of UA and OA-treated cells was slightly increased at 24h and significantly decreased at 48 h and 60 h, whereas untreated control cells maintained an exponential growth curve. Cell cycle analysis by FCM showed HCT15 cells treated with UA 30 and OA 60 for 36 h and 72 h gradually accumulated in G(0)/G(1) phase (both drugs P<0.05 for 72 h), with a concomitant decrease of cell populations in S phase (both drugs P<0.01 for 72 h) and no detectable apoptotic fraction. CONCLUSION UA and OA have significant anti-tumor activity. The effect of UA is stronger than that of OA. The possible mechanism of action is that both drugs have an inhibitory effect on tumor cell proliferation through cell-cycle arrest.
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Affiliation(s)
- Jie Li
- Department of Oncology, Cancer Center, Xin Hua Hospital, Shanghai Second Medical University, Shanghai 200092, China.
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