1
|
Shi FZ, Fang YD, Fan M, Jiang XJ, Wang S, Wei GZ. Cytotoxic depsidones and xanthones from Garcinia esculenta Y. H. Li. Fitoterapia 2024; 172:105779. [PMID: 38104910 DOI: 10.1016/j.fitote.2023.105779] [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: 09/05/2023] [Revised: 11/23/2023] [Accepted: 12/12/2023] [Indexed: 12/19/2023]
Abstract
Six new compounds, including two depsidones garciculendepsidones A and B (1 and 2), one prenylated xanthone garciculenxanthone (3) and three dimeric xanthones bigarciculenxanthones A-C (4-6), were isolated from the twigs and leaves of Garcinia esculenta Y. H. Li. Their structures were elucidated based on comprehensive analyses of spectral data, including HRESIMS, 1D and 2D NMR, and ECD calculation. All the isolates were tested for their cytotoxicity against five human cancer cell lines (myeloid leukemia HL-60, lung cancer A-549 cells, hepatocellular carcinoma SMMC-7721, breast cancer MDA-MB-231 and colon cancer SW480), among them, compounds 3-5 displayed cytotoxic potential, especially garciculenxanthone (3) had the lowest IC50 value of 8.2 μm for lung cancer A-549 cells.
Collapse
Affiliation(s)
- Feng-Zhi Shi
- College of Pharmacy, Dili University, Dali 671000, People's Republic of China
| | - Yin-Dong Fang
- BioBioPha Co., Ltd., Kunming 650201, People's Republic of China; Reference Substance Branch, National Engineering Research Center for Modernization of Traditional Chinese Medicine, Kunming 650201, People's Republic of China
| | - Min Fan
- College of Pharmacy, Dili University, Dali 671000, People's Republic of China
| | - Xian-Jun Jiang
- BioBioPha Co., Ltd., Kunming 650201, People's Republic of China; Reference Substance Branch, National Engineering Research Center for Modernization of Traditional Chinese Medicine, Kunming 650201, People's Republic of China
| | - Shuang Wang
- College of Pharmacy, Dili University, Dali 671000, People's Republic of China.
| | - Guo-Zhu Wei
- BioBioPha Co., Ltd., Kunming 650201, People's Republic of China; Reference Substance Branch, National Engineering Research Center for Modernization of Traditional Chinese Medicine, Kunming 650201, People's Republic of China.
| |
Collapse
|
2
|
Cai C, Chen Y, Zhou L, Gong N, Zhang H, Sun C, Ma J, Ju J. Antimicrobial Polyketides from the Marine-Derived Fungus Spiromastix sp. SCSIO F190. JOURNAL OF NATURAL PRODUCTS 2023; 86:589-595. [PMID: 36563017 DOI: 10.1021/acs.jnatprod.2c00900] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Three diphenyl ethers (1-3) and a cyclopentenone (4), together with seven known compounds (5-11), were isolated from the fermentation broth of the marine sediment-derived fungus Spiromastix sp. SCSIO F190. Compounds 3 and 4 were found to exist as a pair of atropisomers (3a, 3b) and racemates (4a, 4b), respectively. The planar structures of compounds 1-4 were elucidated on the basis of NMR and HRESIMS data sets. The absolute configurations of 2 and 3 were determined by spectroscopic and single-crystal X-ray diffraction analyses, whereas the configuration of 4 was determined by spectroscopic and chiral analyses. All compounds, except for 4 and 11, displayed activities against various pathogenic bacteria. Notably, compounds 1-4, especially 1, exhibited strong activity against Gram-positive bacteria, including methicillin-resistant bacterial strains of Staphylococcus aureus (MRSA), Enterococcus faecalis ATCC 29212, and Bacillus subtilis BS01, with MIC values ranging from 0.5 to 4 μg/mL. Moreover, the structure-activity relationship analyses of the active compounds and their analogues revealed the critical structural features correlating to the observed antimicrobial activities, herein providing insights for antimicrobial drug development.
Collapse
Affiliation(s)
- Cunlei Cai
- CAS Key Laboratory of Tropical Marine Bio-resources and Ecology, RNAM Center for Marine Microbiology, Guangdong Key Laboratory of Marine Materia Medica, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, Guangdong 510301, China
- University of Chinese Academy of Sciences, Beijing 110039, China
| | - Yingying Chen
- CAS Key Laboratory of Tropical Marine Bio-resources and Ecology, RNAM Center for Marine Microbiology, Guangdong Key Laboratory of Marine Materia Medica, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, Guangdong 510301, China
| | - Le Zhou
- CAS Key Laboratory of Tropical Marine Bio-resources and Ecology, RNAM Center for Marine Microbiology, Guangdong Key Laboratory of Marine Materia Medica, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, Guangdong 510301, China
| | - Naying Gong
- Guangdong Provincial Key Laboratory of Medical Molecular Diagnostics, School of Medical Technology, Guangdong Medical University, Dongguan 523808, China
| | - Hua Zhang
- Guangdong Provincial Key Laboratory of Medical Molecular Diagnostics, School of Medical Technology, Guangdong Medical University, Dongguan 523808, China
| | - Changli Sun
- CAS Key Laboratory of Tropical Marine Bio-resources and Ecology, RNAM Center for Marine Microbiology, Guangdong Key Laboratory of Marine Materia Medica, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, Guangdong 510301, China
| | - Junying Ma
- CAS Key Laboratory of Tropical Marine Bio-resources and Ecology, RNAM Center for Marine Microbiology, Guangdong Key Laboratory of Marine Materia Medica, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, Guangdong 510301, China
- University of Chinese Academy of Sciences, Beijing 110039, China
| | - Jianhua Ju
- CAS Key Laboratory of Tropical Marine Bio-resources and Ecology, RNAM Center for Marine Microbiology, Guangdong Key Laboratory of Marine Materia Medica, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, Guangdong 510301, China
- University of Chinese Academy of Sciences, Beijing 110039, China
| |
Collapse
|
3
|
Kerboua M, Monia AA, Samba N, Silva L, Raposo C, Díez D, Rodilla JM. Phytochemical Composition of Lichen Parmotrema hypoleucinum (J. Steiner) Hale from Algeria. Molecules 2022; 27:molecules27165229. [PMID: 36014465 PMCID: PMC9416662 DOI: 10.3390/molecules27165229] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2022] [Revised: 07/18/2022] [Accepted: 08/09/2022] [Indexed: 11/16/2022] Open
Abstract
In this work, we carried out studies of the chemical composition of hexane, chloroform and ethanol extracts from two samples of the lichen Parmotrema hypoleucinum collected in Algeria. Each sample of the lichen P. hypoleucinum was collected on two different supports: Olea europaea and Quercus coccifera. Hexane extracts were prepared, in Soxhlet; each hexane extract was fractionated by its solubility in methanol; the products soluble in methanol were separated (cold): 1-Hexane, 2-Hexane; and the products insoluble in methanol (cold): 1-Cires, 2-Cires. A diazomethane esterified sample of 1-Hexane, 2-Hexane, 1-Cires and 2-Cires was analyzed by GC-MS, and the components were identified as methyl esters. In the 1-Hexane and 2-Hexane fractions, the methyl esters of the predominant fatty acids in the lichen were identified: palmitic acid, linoleic acid, oleic acid and stearic acid; a hydrocarbon was also identified: 13-methyl-17-norkaur-15-ene and several derivatives of orsellinic acid. In the 1-Cires and 2-Cires fractions, the previous fatty acids were no longer observed, and only the derivatives of orsellinic acid were found. The analysis of the 1-Hexane, 2-Hexane fractions by HPLC-MS/MS allows us to identify different chemical components, and the most characteristic products of the lichen were identified, such as Atranol, Chloroatranol, Atranorin and Chloroatranorin. In the fractions of 1-Cires and 2-Cires, the HPLC-MS/MS analysis reveals that they are very similar in their chemical components; the characteristic products of this lichen in this fraction are Atranorin and Chloroatranorin. In the extracts of chloroform, 1-Chloroform and 2-Chloroform, the analysis carried out by HPLC-MS/MS shows small differences in their chemical composition at the level of secondary products; among the products to be highlighted for this work, we have chloroatranorin, the stictic acid, norstictic acid and other derivatives. In the analysis of the most polar extracts carried out in ethanol: 1-Ethanol and 2-Ethanol, HPLC-MS/MS analysis shows very similar chemical compositions in these two extracts with small differences. In these extracts, the following acids were identified as characteristic compounds of this lichen: constictic acid, stictic acid, substictic acid and methylstictic acid. In the HPLC–MS/MS analysis of all these extracts, alectoronic acid was not found.
Collapse
Affiliation(s)
- Marwa Kerboua
- Laboratory of Vegetal Biology and Environment, Biology Department, Badji Mokhtar University, Annaba 23000, Algeria
| | - Ali Ahmed Monia
- Laboratory of Vegetal Biology and Environment, Biology Department, Badji Mokhtar University, Annaba 23000, Algeria
| | - Nsevolo Samba
- Chemistry Department, University of Beira Interior, 6201-001 Covilhã, Portugal
- Department of Clinical Analysis and Public Health, University Kimpa Vita, Uige 77, Angola
| | - Lúcia Silva
- Chemistry Department, University of Beira Interior, 6201-001 Covilhã, Portugal
- Fiber Materials and Environmental Technologies (FibEnTech), University of Beira Interior, 6201-001 Covilhã, Portugal
| | - Cesar Raposo
- Mass Spectrometry Service, University of Salamanca, 37007 Salamanca, Spain
| | - David Díez
- Department of Organic Chemistry, Faculty of Chemical Sciences, University of Salamanca, 37008 Salamanca, Spain
| | - Jesus Miguel Rodilla
- Chemistry Department, University of Beira Interior, 6201-001 Covilhã, Portugal
- Fiber Materials and Environmental Technologies (FibEnTech), University of Beira Interior, 6201-001 Covilhã, Portugal
- Correspondence: ; Tel.: +351-275-241-306
| |
Collapse
|
4
|
Promgool T, Kanokmedhakul K, Leewijit T, Song J, Soytong K, Yahuafai J, Kudera T, Kokoska L, Kanokmedhakul S. Cytotoxic and antibacterial depsidones from the endophytic fungus Chaetomium brasiliense isolated from Thai rice. Nat Prod Res 2021; 36:4605-4613. [PMID: 34736358 DOI: 10.1080/14786419.2021.1999947] [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: 10/19/2022]
Abstract
Four new depsidones, mollicellins V-Y (1-4), together with eight known depsidones (5-12) were isolated from the endophytic fungus, Chaetomium brasiliense, detached from stems of Thai rice. Their structures were determined by extensive spectroscopic methods. Mollicellins X, H, and F (3, 8 and 10) showed potent cytotoxicity against the human oral epidermoid carcinoma (KB) cell line, and mollicellin F (10) also showed a potent cytotoxicity against the human hepatocellular carcinoma (HepG2) cell line. Besides, mollicellin B (11) exhibited cytotoxicity against the colorectal adenocarcinoma (HT-29) cell line. Moreover, most of the isolated depsidones displayed potent antibacterial activity against Gram-positive bacteria, Bacillus cereus and Bacillus subtilis, and several of them showed moderate activity against Methicillin-resistant Staphylococcus aureus (MRSA) and clinical isolates of S. aureus. In addition, a few of them also showed moderate activity against a Gram-negative bacteria Pseudomonas aeruginosa.
Collapse
Affiliation(s)
- Trinop Promgool
- Faculty of Science, Natural Products Research Unit, Department of Chemistry and Center of Excellence for Innovation in Chemistry, Khon Kaen University, Khon Kaen, Thailand
| | - Kwanjai Kanokmedhakul
- Faculty of Science, Natural Products Research Unit, Department of Chemistry and Center of Excellence for Innovation in Chemistry, Khon Kaen University, Khon Kaen, Thailand
| | - Thianrat Leewijit
- Faculty of Agricultural Technology, King Mongkut's Institute of Technology Ladkrabang, Bangkok, Thailand
| | - Jiaojiao Song
- Faculty of Agricultural Technology, King Mongkut's Institute of Technology Ladkrabang, Bangkok, Thailand
| | - Kasem Soytong
- Faculty of Agricultural Technology, King Mongkut's Institute of Technology Ladkrabang, Bangkok, Thailand
| | - Jantana Yahuafai
- Natural Products Research Section, Research Division, National Cancer Institute, Bangkok, Thailand
| | - Tomas Kudera
- Department of Crop Sciences and Agroforestry, Faculty of Tropical Agrisciences, Czech University of Life Sciences Prague, Prague, Czech Republic
| | - Ladislav Kokoska
- Department of Crop Sciences and Agroforestry, Faculty of Tropical Agrisciences, Czech University of Life Sciences Prague, Prague, Czech Republic
| | - Somdej Kanokmedhakul
- Faculty of Science, Natural Products Research Unit, Department of Chemistry and Center of Excellence for Innovation in Chemistry, Khon Kaen University, Khon Kaen, Thailand
| |
Collapse
|
5
|
Ngoupayo J, Noungoue DT, Lenta BN, Tabopda TK, Khan SN, Ngouela S, Shaiq MA, Tsamo E. Brevipsidone, a New Depsidone and Other α-Glucosidase Inhibitors from Garcinia Brevipedicellata (Clusiaceae). Nat Prod Commun 2019. [DOI: 10.1177/1934578x0700201119] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Brevipsidone (1), a new depsidone was isolated from the methanol extract of the stem bark of Garcinia brevipedicellata together with known damnacanthal (2), pilloin (3), scopoletin (4). The structure of the new compound was determined by analysis of spectroscopic data. Compounds 1–4 were evaluated for their α-glucosidase inhibition effect and showed significant inhibitory activity.
Collapse
Affiliation(s)
- Joseph Ngoupayo
- Department of Organic Chemistry, Faculty of Science, University of Yaoundé I, P.O. Box 812 Yaoundé, Cameroon
| | - Diderot T. Noungoue
- Department of Organic Chemistry, Faculty of Science, University of Yaoundé I, P.O. Box 812 Yaoundé, Cameroon
| | - Bruno N. Lenta
- Department of Organic Chemistry, Faculty of Science, University of Yaoundé I, P.O. Box 812 Yaoundé, Cameroon
| | - Turibio K. Tabopda
- Department of Organic Chemistry, Faculty of Science, University of Yaoundé I, P.O. Box 812 Yaoundé, Cameroon
| | - Shamsun N. Khan
- H.E.J. Research Institute of Chemistry, University of Karachi, Karachi-75270, Pakistan
| | - Silvère Ngouela
- Department of Organic Chemistry, Faculty of Science, University of Yaoundé I, P.O. Box 812 Yaoundé, Cameroon
| | - Mohammad A. Shaiq
- H.E.J. Research Institute of Chemistry, University of Karachi, Karachi-75270, Pakistan
| | - Etienne Tsamo
- Department of Organic Chemistry, Faculty of Science, University of Yaoundé I, P.O. Box 812 Yaoundé, Cameroon
| |
Collapse
|
6
|
Khalid RM, Jabit ML, Abas F, Stanslas J, Shaari K, Lajis NH. Cytotoxic Xanthones from the Leaves of Garcinia Urophylla. Nat Prod Commun 2019. [DOI: 10.1177/1934578x0700200309] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Two new xanthones, 7-hydroxydesoxymorellin (1) and isocaledonixanthone D (2), and four known ones, gaudichaudione H, 1,7-dihydroxy-3-methoxy-2-(3-methyl-2-butenyl)xanthone, 1,5-dihydroxy-3-methoxy-2-(3-methyl-2-butenyl)xanthone, and 1,3,7-trihydroxy-2-(3-methyl-2-butenyl)xanthone, as well as lupeol were isolated from the leaves of Garcinia urophylla (Guttiferae). Their structures were determined using a combination of 1D (1H NMR, 13C NMR, DEPT) and 2D (COSY, gHSQC, gHMBC) NMR spectroscopic techniques. Among the isolates, 7-hydroxydesoxymorellin (1), gaudichaudione H, 1,5-dihydroxy-3-methoxy-2-(3-methyl-2-butenyl)xanthone, and 1,3,7-trihydroxy-2-(3-methyl-2-butenyl)xanthone demonstrated cytotoxic activities against breast (MCF-7), prostate (DU-145), and lung (NCI-H460) human cancer cell lines.
Collapse
Affiliation(s)
- Rozida Mohd Khalid
- Laboratory of Natural Products, Institute of Bioscience, Universiti Putra Malaysia, 43400 Serdang, Selangor, Malaysia
| | - Md. Lip Jabit
- Laboratory of Natural Products, Institute of Bioscience, Universiti Putra Malaysia, 43400 Serdang, Selangor, Malaysia
| | - Faridah Abas
- Laboratory of Natural Products, Institute of Bioscience, Universiti Putra Malaysia, 43400 Serdang, Selangor, Malaysia
| | - Johnson Stanslas
- Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, 43400 Serdang, Selangor, Malaysia
| | - Khozirah Shaari
- Laboratory of Natural Products, Institute of Bioscience, Universiti Putra Malaysia, 43400 Serdang, Selangor, Malaysia
| | - Nordin H. Lajis
- Laboratory of Natural Products, Institute of Bioscience, Universiti Putra Malaysia, 43400 Serdang, Selangor, Malaysia
| |
Collapse
|
7
|
Umeokoli BO, Ebrahim W, El-Neketi M, Müller WEG, Kalscheuer R, Lin W, Liu Z, Proksch P. A new depsidone derivative from mangrove sediment derived fungus Lasiodiplodia theobromae. Nat Prod Res 2018; 33:2215-2222. [DOI: 10.1080/14786419.2018.1496430] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Blessing O. Umeokoli
- Institute of Pharmaceutical Biology and Biotechnology, Heinrich-Heine-Universität Düsseldorf, Düsseldorf, Germany
- Department of Pharmaceutical and Medicinal Chemistry, Namdi Azikiwe University, Awka, Nigeria
| | - Weaam Ebrahim
- Institute of Pharmaceutical Biology and Biotechnology, Heinrich-Heine-Universität Düsseldorf, Düsseldorf, Germany
- Department of Pharmacognosy, Faculty of Pharmacy, Mansoura University, Mansoura, Egypt
| | - Mona El-Neketi
- Department of Pharmacognosy, Faculty of Pharmacy, Mansoura University, Mansoura, Egypt
| | - Werner E. G. Müller
- Institute of Physiological Chemistry, Universitätsmedizin der Johannes Gutenberg-Universität Mainz, Mainz, Germany
| | - Rainer Kalscheuer
- Institute of Pharmaceutical Biology and Biotechnology, Heinrich-Heine-Universität Düsseldorf, Düsseldorf, Germany
| | - Wenhan Lin
- State Key Laboratory of Natural and Biomimetic Drugs, Peking University, Health Science Centre, Beijing, People’s Republic of China
| | - Zhen Liu
- Institute of Pharmaceutical Biology and Biotechnology, Heinrich-Heine-Universität Düsseldorf, Düsseldorf, Germany
| | - Peter Proksch
- Institute of Pharmaceutical Biology and Biotechnology, Heinrich-Heine-Universität Düsseldorf, Düsseldorf, Germany
| |
Collapse
|
8
|
Olivon F, Nothias LF, Dumontet V, Retailleau P, Berger S, Ferry G, Cohen W, Pfeiffer B, Boutin JA, Scalbert E, Roussi F, Litaudon M. Natural Inhibitors of the RhoA-p115 Complex from the Bark of Meiogyne baillonii. JOURNAL OF NATURAL PRODUCTS 2018; 81:1610-1618. [PMID: 29969260 DOI: 10.1021/acs.jnatprod.8b00209] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
In an effort to find potent natural inhibitors of RhoA and p115 signaling G-proteins, a systematic in vitro evaluation using enzymatic and plasmonic resonance assays was undertaken on 11 317 plant extracts. The screening procedure led to the selection of the New Caledonian endemic species Meiogyne baillonii for a chemical investigation. Using a bioguided isolation procedure, three enediyne-γ-butyrolactones (1-3) and two enediyne-γ-butenolides (4 and 5), named sapranthins H-L, respectively, two enediyne carboxylic acid (6 and 7), two depsidones, stictic acid (8) and baillonic acid (9), aristolactams AIa and AIIa (10 and 11), and two aporphines, dehydroroemerine (12) and noraristolodione (13), were isolated from the ethyl acetate extract of the bark. The structures of the new compounds (1-6, 9, and 11) and their relative configurations were established by NMR spectroscopic analysis and by X-ray diffraction analysis for compound 9. Only stictic acid (8) exhibited a significant inhibiting activity of the RhoA-p115 complex, with an EC50 value of 0.19 ± 0.05 mM. This is the first time that a natural inhibitor of the complex RhoA-p115's activity was discovered from an HTS performed over a collection of higher plant extracts. Thus, stictic acid (8) could be used as the first reference compound inhibiting the interaction between RhoA and p115.
Collapse
Affiliation(s)
- Florent Olivon
- Institut de Chimie des Substances Naturelles, CNRS-ICSN, UPR 2301, Université Paris-Saclay , 91198 , Gif-sur-Yvette , France
| | - Louis-Félix Nothias
- Institut de Chimie des Substances Naturelles, CNRS-ICSN, UPR 2301, Université Paris-Saclay , 91198 , Gif-sur-Yvette , France
| | - Vincent Dumontet
- Institut de Chimie des Substances Naturelles, CNRS-ICSN, UPR 2301, Université Paris-Saclay , 91198 , Gif-sur-Yvette , France
| | - Pascal Retailleau
- Institut de Chimie des Substances Naturelles, CNRS-ICSN, UPR 2301, Université Paris-Saclay , 91198 , Gif-sur-Yvette , France
| | - Sylvie Berger
- Institut de Recherches Servier , 78290 Croissy-sur-Seine , France
| | - Gilles Ferry
- Institut de Recherches Servier , 78290 Croissy-sur-Seine , France
| | - William Cohen
- Institut de Recherches Servier , 78290 Croissy-sur-Seine , France
| | - Bruno Pfeiffer
- Institut de Recherches Servier , 78290 Croissy-sur-Seine , France
| | - Jean A Boutin
- Institut de Recherches Servier , 78290 Croissy-sur-Seine , France
| | | | - Fanny Roussi
- Institut de Chimie des Substances Naturelles, CNRS-ICSN, UPR 2301, Université Paris-Saclay , 91198 , Gif-sur-Yvette , France
| | - Marc Litaudon
- Institut de Chimie des Substances Naturelles, CNRS-ICSN, UPR 2301, Université Paris-Saclay , 91198 , Gif-sur-Yvette , France
| |
Collapse
|
9
|
Mathioudaki A, Berzesta A, Kypriotakis Z, Skaltsa H, Heilmann J. Phenolic metabolites from Hypericum kelleri Bald., an endemic species of Crete (Greece). PHYTOCHEMISTRY 2018; 146:1-7. [PMID: 29190454 DOI: 10.1016/j.phytochem.2017.11.009] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/23/2017] [Revised: 11/13/2017] [Accepted: 11/22/2017] [Indexed: 06/07/2023]
Abstract
Thirteen compounds were isolated from the aerial parts of Hypericum kelleri Bald., growing as an endemic on the island of Crete (Greece). These compounds comprise four previously unknown prenylated xanthones 1,2-dihydro-3,8-dihydroxy-6-methoxy-1,1,5-tri(3-methylbut-2-enyl)xanthen-2,9-dione (kellerine A), 1,2-dihydro-3,6,8-trihydroxy-1,1,5-tri(3-methylbut-2-enyl)xanthen-2,9-dione (kellerine B), 1,2-dihydro-3,8-dihydroxy-6-methoxy-1,1-bi(3-methylbut-2-enyl)xanthen-2,9-dione (6-methylpatulone), (R/S)-1,3,5-trihydroxy-2-(3-methyl-2-buten-1-yl)-4-[2-(3-methylbut-2-enyl)-3-methylbut-3-enyl]-6-methoxy-9H-xanthen-9-one ((2″R/S)-kellerine C) and the hitherto undescribed depsidone (R/S)-1,3,6-trihydroxy-5-methoxy-2-(3-methyl-2-buten-1-yl)-4-[2-(3-methylbut-2-enyl)-3-methylbut-3-enyl]-11Η-dibenzo[b,e] [1,4]dioxepin-9-one ((2″R/S)-creticine). As known compounds, brevipsidone D, 4-geranyl-2-(2'-isobutyryl)-phloroglucinol, 4-geranyl-2-(2'-methylbutyryl)-phloroglucinol, I3, II8-biapigenin, quercetin, avicularin, pseudohypericin and neochlorogenic acid have been isolated. The structures were elucidated on the basis of their 1D, 2D NMR, CD and MS data. The study confirms the typical occurrence of xanthones in Hypericum section Oligostema (Boiss.) Stef., and is also the first report on the simultaneous isolation of acylphloroglucinols in this section. Furthermore the first evidence of depsidones in the genus Hypericum L. is reported. Cytotoxicity was investigated in HeLa cells for prenylated xanthones and the depsidones. Both triprenylated 1,2-dihydroxanthones (kellerine A and B) showed significant in vitro cytotoxicity with IC50 values of 2.5 ± 0.1 (kellerine A) and 5.9 ± 0.9 (kellerine B) μM, whereas other compounds were less cytotoxic (IC50 > 20 μM).
Collapse
Affiliation(s)
- Angeliki Mathioudaki
- Department of Pharmacognosy and Chemistry of Natural Products, School of Pharmacy, University of Athens, Panepistimiopolis, Zografou, 157 71, Athens, Greece; Universität Regensburg, Pharmaceutical Biology, Universitätsstr. 31, D-93053, Regensburg, Germany
| | - Ariola Berzesta
- Department of Pharmacognosy and Chemistry of Natural Products, School of Pharmacy, University of Athens, Panepistimiopolis, Zografou, 157 71, Athens, Greece; Universität Regensburg, Pharmaceutical Biology, Universitätsstr. 31, D-93053, Regensburg, Germany
| | - Zacharias Kypriotakis
- Technological Education Institute, School of Agricultural Production, Lab. of Taxonomy and Management of Wild Flora, Stavromenos P.O.Box 140, Heraklion-Crete, 71110, Greece
| | - Helen Skaltsa
- Department of Pharmacognosy and Chemistry of Natural Products, School of Pharmacy, University of Athens, Panepistimiopolis, Zografou, 157 71, Athens, Greece
| | - Jörg Heilmann
- Universität Regensburg, Pharmaceutical Biology, Universitätsstr. 31, D-93053, Regensburg, Germany.
| |
Collapse
|
10
|
A fruitful decade for fungal polyketides from 2007 to 2016: antimicrobial activity, chemotaxonomy and chemodiversity. Future Med Chem 2017; 9:1631-1648. [DOI: 10.4155/fmc-2017-0028] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
The last three decades have shown that the fungi can be ‘biofactories’ of novel, bioactive secondary metabolites that produce numerous natural products with novel skeletons and biological activities. Particularly in the last 10 years, large numbers of antimicrobial fungal secondary metabolites have been discovered. This review provides an overview of key, defining developments of the last 10 years regarding the discovery of antimicrobial activity, chemotaxonomy and chemodiversity of fungal polyketides.
Collapse
|
11
|
Ango YP, Kapche GDWF, Kuete V, Mapitse R, Yeboah SO, Ngadjui BT. Three New Derivatives and Others Constituents from the Roots and Twigs ofTrilepisium madagascarienseDC. Helv Chim Acta 2016. [DOI: 10.1002/hlca.201600073] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Yves P. Ango
- Department of Organic Chemistry; Faculty of Science; University of Yaoundé 1; P.O. Box 812 Yaoundé Cameroon
| | - Gilbert D. W. F. Kapche
- Department of Chemistry; Higher Teacher Training College; University of Yaoundé I; P.O. Box 47 Yaoundé Cameroon
| | - Victor Kuete
- Department of Biochemistry; Faculty of Science; University of Dschang; Dschang Cameroon
| | - Renameditswe Mapitse
- Department of Chemistry; Faculty of Science; University of Botswana; Block 237, Private Bag 0022 Gaborone Botswana
| | - Samuel O. Yeboah
- Department of Chemistry; Faculty of Science; University of Botswana; Block 237, Private Bag 0022 Gaborone Botswana
| | - Bonaventure T. Ngadjui
- Department of Organic Chemistry; Faculty of Science; University of Yaoundé 1; P.O. Box 812 Yaoundé Cameroon
| |
Collapse
|
12
|
Bui TQ, Bui AT, Nguyen KT, Nguyen VT, Trinh BT, Nguyen LHD. A depsidone and six triterpenoids from the bark of Garcinia celebica. Tetrahedron Lett 2016. [DOI: 10.1016/j.tetlet.2016.04.104] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
|
13
|
New depsidones and xanthone from the roots of Garcinia schomburgkiana. Fitoterapia 2016; 111:73-7. [DOI: 10.1016/j.fitote.2016.04.012] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2016] [Revised: 04/15/2016] [Accepted: 04/17/2016] [Indexed: 01/30/2023]
|
14
|
Coulerie P, Poullain C. New Caledonia: A ' Hot Spot' for Valuable Chemodiversity: Part 2: Basal Angiosperms and Eudicot Rosids. Chem Biodivers 2016; 13:18-36. [PMID: 26765350 DOI: 10.1002/cbdv.201400389] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2014] [Accepted: 01/13/2015] [Indexed: 11/07/2022]
Abstract
The flora of New Caledonia encompasses more than 3000 plant species and almost 80% are endemic. New Caledonia is considered as a 'hot spot' for biodiversity. With the current global loss of biodiversity and the fact that several drugs and pesticides become obsolete, there is an urgent need to increase sampling and research on new natural products. In this context, we review the chemical knowledge available on New Caledonian native flora from economical perspectives. We expect that a better knowledge of the economic potential of plant chemistry will encourage the plantation of native plants for the development of a sustainable economy which will participate in the conservation of biodiversity. In the second part of this review, we focus on the results exposed in 60 scientific articles and describe the identification of 225 original compounds from basal angiosperms and eudicot rosids. We discuss the economic potential of plants and molecules from medicinal and industrial perspectives. This review also highlights several plants and groups, such as Amborella sp., Piperaceae, or Phyllanthaceae, that are unexplored in New Caledonia despite their high chemical interest. Those plants are considered to have priority in future chemical investigations.
Collapse
Affiliation(s)
- Paul Coulerie
- Institut Agronomique néo-Calédonien, Connaissance et Amélioration des Agrosystèmes, BP A5, 98848 Noumea Cedex, New Caledonia. .,School of Pharmaceutical Sciences, University of Geneva, 30, Quai Ernest-Ansermet, CH-1211 Geneva 4, (phone: +41-22-3793409).
| | - Cyril Poullain
- Centre de Recherche de Gif, Institut de Chimie des Substances Naturelles, CNRS, Labex LERMIT, 1 Avenue de la Terrasse, FR-91198 Gif-sur-Yvette Cedex.,Stratoz, 5, Rue de la Baume, FR-75008 Paris
| |
Collapse
|
15
|
Stark TD, Salger M, Frank O, Balemba OB, Wakamatsu J, Hofmann T. Antioxidative compounds from Garcinia buchananii stem bark. JOURNAL OF NATURAL PRODUCTS 2015; 78:234-240. [PMID: 25625705 DOI: 10.1021/np5007873] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
An aqueous ethanolic extract of the stem bark of Garcinia buchananii showed strong antioxidative activity using H2O2 scavenging, oxygen radical absorbance capacity (ORAC), and Trolox equivalent antioxidant capacity (TEAC) assays. Activity-guided fractionation afforded three new compounds, isomanniflavanone (1), an ent-eriodictyol-(3α→6)-dihydroquercetin-linked biflavanone, 1,5-dimethoxyajacareubin (2), and the depsidone garcinisidone-G (3), and six known compounds, (2″R,3″R)-preussianon, euxanthone, 2-isoprenyl-1,3,5,6-tetrahydroxyxanthone, jacareubin, isogarcinol, and garcinol. All compounds were described for the first time in Garcinia buchananii. The absolute configurations were determined by a combination of NMR, ECD spectroscopy, and polarimetry. These natural products showed high in vitro antioxidative power, especially isomanniflavanone, with an EC50 value of 8.5 μM (H2O2 scavenging), 3.50/4.95 mmol TE/mmol (H/L-TEAC), and 7.54/14.56 mmol TE/mmol (H/L-ORAC).
Collapse
Affiliation(s)
- Timo D Stark
- Lehrstuhl für Lebensmittelchemie und Molekulare Sensorik, Technische Universität München , Lise-Meitner-Straße 34, 85354 Freising, Germany
| | | | | | | | | | | |
Collapse
|
16
|
Srivastava A, Biswas S, Singh S, Mobin SM, Samanta S. Organocatalysed Michael addition on arylmethylidenemalonates involving 4-(2-nitrophenyl)acetoacetate: diversity-oriented access to 8,9-dihydropyrido[1,2-a]indol-6(7H)-one and salicylate scaffolds. RSC Adv 2015. [DOI: 10.1039/c5ra01430a] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023] Open
Abstract
A diversity-oriented synthesis of 8,9-dihydropyrido[1,2-a]indol-6(7H)-one and salicylate scaffolds was achieved in high yields with excellent diastereoselectivities (≤96 : 4 dr) via an organocatalytic reaction of alkylidene malonates with 4-(2-nitrophenyl) acetoacetate.
Collapse
|
17
|
Design, synthesis and experimental validation of novel potential chemopreventive agents using random forest and support vector machine binary classifiers. J Comput Aided Mol Des 2014; 28:631-46. [PMID: 24840854 DOI: 10.1007/s10822-014-9748-9] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2013] [Accepted: 05/05/2014] [Indexed: 10/25/2022]
Abstract
Compared to the current knowledge on cancer chemotherapeutic agents, only limited information is available on the ability of organic compounds, such as drugs and/or natural products, to prevent or delay the onset of cancer. In order to evaluate chemical chemopreventive potentials and design novel chemopreventive agents with low to no toxicity, we developed predictive computational models for chemopreventive agents in this study. First, we curated a database containing over 400 organic compounds with known chemoprevention activities. Based on this database, various random forest and support vector machine binary classifiers were developed. All of the resulting models were validated by cross validation procedures. Then, the validated models were applied to virtually screen a chemical library containing around 23,000 natural products and derivatives. We selected a list of 148 novel chemopreventive compounds based on the consensus prediction of all validated models. We further analyzed the predicted active compounds by their ease of organic synthesis. Finally, 18 compounds were synthesized and experimentally validated for their chemopreventive activity. The experimental validation results paralleled the cross validation results, demonstrating the utility of the developed models. The predictive models developed in this study can be applied to virtually screen other chemical libraries to identify novel lead compounds for the chemoprevention of cancers.
Collapse
|
18
|
Niu S, Liu D, Hu X, Proksch P, Shao Z, Lin W. Spiromastixones A-O, antibacterial chlorodepsidones from a deep-sea-derived Spiromastix sp. fungus. JOURNAL OF NATURAL PRODUCTS 2014; 77:1021-1030. [PMID: 24571273 DOI: 10.1021/np5000457] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Fifteen new depsidone-based analogues named spiromastixones A-O (1-15) were isolated from the fermentation broth of a deep-sea Spiromastix sp. fungus. Their structures were elucidated on the basis of extensive NMR and mass spectroscopic analysis in association with chemical conversion. Spiromastixones A-O are classified into two subtypes based on the orientation of ring C relative to ring A, while the n-propyl substituents on rings A and C are rarely seen in natural products. Most analogues are substituted by various numbers of chlorine atoms. All compounds exhibited significant inhibition against Gram-positive bacteria including Staphylococcus aureus, Bacillus thuringiensis, and Bacillus subtilis with MIC values ranging from 0.125 to 8.0 μg/mL. In addition, compounds 6-10 displayed potent inhibitory effects against methicillin-resistant bacterial strains of S. aureus (MRSA) and S. epidermidis (MRSE), while 10 also inhibited the growth of the vancomycin-resistant bacteria Enterococcus faecalis and E. faecium (VRE). The structure-activity relationships are discussed.
Collapse
Affiliation(s)
- Siwen Niu
- State Key Laboratory of Natural and Biomimetic Drugs, Peking University , Beijing, 100191, People's Republic of China
| | | | | | | | | | | |
Collapse
|
19
|
Ito C, Matsui T, Noda E, Ruangrungsi N, Itoigawa M. Biphenyl Derivatives from Garcinia Schomburgkiana and the Cytotoxicity of the Isolated Compounds. Nat Prod Commun 2013. [DOI: 10.1177/1934578x1300800921] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Study of the chemical constituents of the stems of Garcinia schomburgkiana Pierre (Guttiferae), collected in Thailand, led to the isolation and identification of five known compounds and two new biphenyl derivatives, schomburgbiphenyl A (1) and B (2). Six phenolic compounds isolated from this plant were screened for their cell growth inhibition activity using several human leukemia cell lines. One compound, oblongifolin C (7), showed significant cytotoxic activity towards Jurkat, NALM6, K562 and HPB-ALL cells.
Collapse
Affiliation(s)
- Chihiro Ito
- Department of Medicinal Chemistry, Faculty of Pharmacy, Meijo University, 150 Yagotoyama, Tempaku-ku, Nagoya 468-8503, Japan
| | - Takuya Matsui
- Department of Physiology, Aichi Medical University, Yazako-karimata 1-1 Nagakute, Aichi 480-1195, Japan
| | - Eri Noda
- Department of Medicinal Chemistry, Faculty of Pharmacy, Meijo University, 150 Yagotoyama, Tempaku-ku, Nagoya 468-8503, Japan
| | | | - Masataka Itoigawa
- Department of Medicinal Chemistry, Faculty of Pharmacy, Meijo University, 150 Yagotoyama, Tempaku-ku, Nagoya 468-8503, Japan
- School of Sport and Health Science, Tokai Gakuen University, 21-233 Nishinohora, Ukigai, Miyoshi, Aichi 470-0207, Japan
| |
Collapse
|
20
|
Cordes J, Laclef S, White AJP, Barrett AGM. Palladium(0)-Catalyzed Allylic Alkylation of Diketoester–Dioxinones with Allyl Acetates under Neutral Conditions: Synthesis of Hexasubstituted Benzene Derivatives. J Org Chem 2012; 77:3524-30. [DOI: 10.1021/jo300340c] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jens Cordes
- Department
of Chemistry, Imperial College, London
SW7 2AZ, England
| | - Sylvain Laclef
- Department
of Chemistry, Imperial College, London
SW7 2AZ, England
| | | | | |
Collapse
|
21
|
Ha LD, Hansen PE, Duus F, Pham HD, Nguyen LHD. Oliveridepsidones A-D, antioxidant depsidones from Garcinia oliveri. MAGNETIC RESONANCE IN CHEMISTRY : MRC 2012; 50:242-245. [PMID: 22407733 DOI: 10.1002/mrc.2862] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/26/2011] [Accepted: 11/01/2011] [Indexed: 05/31/2023]
Abstract
Four new prenylated depsidones, oliveridepsidones A-D, were isolated from the bark of Garcinia oliveri collected in Vietnam. Their structures were elucidated using mainly NMR techniques ((1)H and (13)C NMR, HMQC, HMBC and NOE experiments).
Collapse
Affiliation(s)
- Ly Dieu Ha
- Department of Organic Chemistry, Faculty of Chemistry, HCM City University of Natural Sciences, HCM City, Vietnam
| | | | | | | | | |
Collapse
|
22
|
A new biphenyl and antimicrobial activity of extracts and compounds from Clusia burlemarxii. Fitoterapia 2011; 82:1237-40. [PMID: 21893172 DOI: 10.1016/j.fitote.2011.08.012] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2011] [Revised: 08/16/2011] [Accepted: 08/17/2011] [Indexed: 11/24/2022]
Abstract
Phytochemical investigation on Clusia burlemarxii (Clusiaceae) led to isolation and identification of nine compounds. Were isolated from leaves 3-O-α-L- rhamnopyranosylquercetin, 3-O-α-L-rhamnopyranosylkaempferol, 4-hydroxy-5,5-dimethyldihydrofuran-2-one, 2Z-δ-tocotrienoloic acid and friedelin and were isolated from trunk betulinic acid, protocatechuic acid, lyoniresinol, and a new biphenyl 2,2-dimethyl-3,5-dihydroxy-7-(4-hydroxyphenyl)chromane. The structures were determined by ¹H, ¹³C-NMR, DEPT, HMBC, HMQC, HRESIMS. The Minimal Inhibitory Concentration against Streptococcus mutans, Staphylococcus aureus, Bacillus subtilis, Micrococcus luteus, Escherichia coli, Salmonella choleraesuis, Pseudomonas aeruginosa, Aspergillus niger and Cladosporium cladosporioides was also determined. Extracts and compounds showed significant activity against tested Gram-positive bacteria, none activity against tested Gram-negative bacteria and fungi.
Collapse
|
23
|
Abdou R, Scherlach K, Dahse HM, Sattler I, Hertweck C. Botryorhodines A-D, antifungal and cytotoxic depsidones from Botryosphaeria rhodina, an endophyte of the medicinal plant Bidens pilosa. PHYTOCHEMISTRY 2010; 71:110-116. [PMID: 19913264 DOI: 10.1016/j.phytochem.2009.09.024] [Citation(s) in RCA: 60] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2009] [Revised: 09/23/2009] [Accepted: 09/24/2009] [Indexed: 05/28/2023]
Abstract
An endophytic fungus (Botryosphaeria rhodina) was isolated from the stems of the medicinal plant Bidens pilosa (Asteraceae) that is known for its anti-inflammatory, antiseptic and antifungal effects. The ethyl acetate extract of the fungal isolate exhibits significant antifungal activity as well as potent cytotoxic and antiproliferative effects against several cancer cell lines. Activity-guided fractionation resulted in the isolation of a complex of four depsidones, botryorhodines A-D and the auxin indole carboxylic acid. Botryorhodine A and B show moderate to weak cytotoxic activities against HeLa cell lines with a CC(50) of 96.97 microM and 36.41 microM, respectively. In addition, they also show antifungal activity against a range of pathogenic fungi such as Aspergillus terreus (MIC 26.03 microM for botryorhodine A and 49.70 microM for B) and the plant pathogen Fusarium oxysporum (MIC 191.60 microM for botryorhodine A and 238.80 microM for B). A potential role of the endophyte in modulating fungal populations living within or attacking the host plant is discussed.
Collapse
Affiliation(s)
- Randa Abdou
- Leibniz Institute for Natural Product Research and Infection Biology, Hans Knöll Institute (HKI), Beutenbergstr. 11a, 07745 Jena, Germany
| | | | | | | | | |
Collapse
|
24
|
FURUKAWA H. Search of Novel Bioactive Natural Products from Plant Sources—Novel Structures and Biological Activities—. YAKUGAKU ZASSHI 2009; 129:1155-75. [DOI: 10.1248/yakushi.129.1155] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
|
25
|
Ngoupayo J, Tabopda TK, Ali MS, Tsamo E. .ALPHA.-Glucosidase Inhibitors from Garcinia brevipedicellata (Clusiaceae). Chem Pharm Bull (Tokyo) 2008; 56:1466-9. [DOI: 10.1248/cpb.56.1466] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
| | | | - Muhammad Shaiq Ali
- H.E.J. Research Institute of Chemistry, International Center for Chemical and Biological Sciences (ICCBS), University of Karachi
| | - Etienne Tsamo
- Département de Chimie Organique, Université de Yaoundé I
| |
Collapse
|
26
|
Rukachaisirikul V, Naklue W, Phongpaichit S, Towatana NH, Maneenoon K. Phloroglucinols, depsidones and xanthones from the twigs of Garcinia parvifolia. Tetrahedron 2006. [DOI: 10.1016/j.tet.2006.06.059] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
|
27
|
Billo M, Fournet A, Cabalion P, Waikedre J, Bories C, Loiseau P, Prina E, de Arias AR, Yaluff G, Fourneau C, Hocquemiller R. Screening of New Caledonian and Vanuatu medicinal plants for antiprotozoal activity. JOURNAL OF ETHNOPHARMACOLOGY 2005; 96:569-575. [PMID: 15619580 DOI: 10.1016/j.jep.2004.10.006] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/07/2004] [Revised: 10/01/2004] [Accepted: 10/07/2004] [Indexed: 05/24/2023]
Abstract
Sixty-seven extracts of 30 medicinal plants traditionally used in New Caledonia or Vanuatu by healers to treat inflammation, fever and in cicatrizing remedies were evaluated in vitro for their antiprotozoal activity against Leishmania donovani, Leishmania amazonensis and Trypanosoma cruzi. Among the selected plants, Pagiantha cerifera was the most active against both Leishmania species; four extracts were active against promastigotes of Leishmania donovani at EC(50) values inferior to 5 microg/ml. Garcinia pedicillata extract had an EC(50) value of 12.5 microg/ml against intracellular amastigotes of Leishmania amazonensis. Alone Amborella trichopoda reduced by more of 80% the trypomastigotes of Trypanosoma cruzi in the blood.
Collapse
Affiliation(s)
- M Billo
- Laboratoire de Pharmacognosie (associé au CNRS-BioCIS), Faculté de Pharmacie, Université Paris-Sud, rue J.B. Clément, 92296 Châtenay-Malabry Cedex, France
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
28
|
Bremner JB. Chapter 7 Seven-membered rings. ACTA ACUST UNITED AC 2003. [DOI: 10.1016/s0959-6380(03)80019-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/06/2023]
|