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Araki K, Hara M, Hamada S, Matsumoto T, Nakamura S. Antiproliferative Activities of Cynaropicrin and Related Compounds against Cancer Stem Cells. Chem Pharm Bull (Tokyo) 2024; 72:200-208. [PMID: 38382968 DOI: 10.1248/cpb.c23-00811] [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] [Indexed: 02/23/2024]
Abstract
Glioblastoma (GBM) has a high mortality rate despite the availability of various cancer treatment options. Although cancer stem cells (CSCs) have been associated with poor prognosis and metastasis, and play an important role in the resistance to existing anticancer drugs and radiation; no CSC-targeting drugs are currently approved in clinical practice. Therefore, the development of antiproliferative agents against CSCs is urgently required. In this study, we evaluated the antiproliferative activities of 21 sesquiterpenoids against human GBM U-251 MG CSCs and U-251 MG non-CSCs. Particularly, the guaianolide sesquiterpene lactone cynaropicrin (1) showed strong antiproliferative activity against U-251 MG CSCs (IC50 = 20.4 µM) and U-251 MG non-CSCs (IC50 = 10.9 µM). Accordingly, we synthesized six derivatives of 1 and investigated their structure-activity relationships. Most of the guaianolide sesquiterpene lactones with the α-methylene-γ-butyrolactone moiety showed antiproliferative activities against U-251 MG cells. We conclude that the 5,7,5-ring and the α-methylene-γ-butyrolactone moiety are both important for antiproliferative activities against U-251 MG cells. The results of this study suggest that the α,β-unsaturated carbonyl moiety, which has recently become a research hotspot in drug discovery, is the active center of 1. Therefore, we consider 1 as a potential lead for developing novel drugs targeting CSCs.
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Boulos JC, Omer EA, Rigano D, Formisano C, Chatterjee M, Leich E, Klauck SM, Shan LT, Efferth T. Cynaropicrin disrupts tubulin and c-Myc-related signaling and induces parthanatos-type cell death in multiple myeloma. Acta Pharmacol Sin 2023; 44:2265-2281. [PMID: 37344563 PMCID: PMC10618500 DOI: 10.1038/s41401-023-01117-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2023] [Accepted: 05/28/2023] [Indexed: 06/23/2023] Open
Abstract
The majority of blood malignancies is incurable and has unforeseeable remitting-relapsing paths in response to different treatments. Cynaropicrin, a natural sesquiterpene lactone from the edible parts of the artichoke plant, has gained increased attention as a chemotherapeutic agent. In this study, we investigated the effects of cynaropicrin against multiple myeloma (MM) cells in vitro and assessed its in vivo effectiveness in a xenograft tumor zebrafish model. We showed that cynaropicrin exerted potent cytotoxicity against a panel of nine MM cell lines and two leukemia cell lines with AMO1 being the most sensitive cell line (IC50 = 1.8 ± 0.3 µM). Cynaropicrin (0.8, 1.9, 3.6 µM) dose-dependently reduced c-Myc expression and transcriptional activity in AMO1 cells that was associated with significant downregulation of STAT3, AKT, and ERK1/2. Cell cycle analysis showed that cynaropicrin treatment arrested AMO1 cells in the G2M phase along with an increase in the sub-G0G1 phase after 24 h. With prolonged treatment times, cells accumulated more in the sub-G0G1 phase, implying cell death. Using confocal microscopy, we revealed that cynaropicrin disrupted the microtubule network in U2OS cells stably expressing α-tubulin-GFP. Furthermore, we revealed that cynaropicrin promoted DNA damage in AMO1 cells leading to PAR polymer production by PARP1 hyperactivation, resulting in AIF translocation from the mitochondria to the nucleus and subsequently to a novel form of cell death, parthanatos. Finally, we demonstrated that cynaropicrin (5, 10 µM) significantly reduced tumor growth in a T-cell acute lymphoblastic leukemia (T-ALL) xenograft zebrafish model. Taken together, these results demonstrate that cynaropicrin causes potent inhibition of hematopoietic tumor cells in vitro and in vivo.
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Affiliation(s)
- Joelle C Boulos
- Department of Pharmaceutical Biology, Institute of Pharmaceutical and Biomedical Sciences, Johannes Gutenberg University, Staudinger Weg 5, 55128, Mainz, Germany
| | - Ejlal A Omer
- Department of Pharmaceutical Biology, Institute of Pharmaceutical and Biomedical Sciences, Johannes Gutenberg University, Staudinger Weg 5, 55128, Mainz, Germany
| | - Daniela Rigano
- Department of Pharmacy, University of Naples "Federico II", Naples, Italy
| | - Carmen Formisano
- Department of Pharmacy, University of Naples "Federico II", Naples, Italy
| | - Manik Chatterjee
- University Hospital Würzburg, Translational Oncology, Comprehensive Cancer Center Mainfranken, Würzburg, Germany
| | - Ellen Leich
- Julius Maximilian University, Institute of Pathology, Würzburg, Germany
- Comprehensive Cancer Center Mainfranken, Translational Oncology, University Hospital of Würzburg, Würzburg, Germany
| | - Sabine M Klauck
- Division of Cancer Genome Research, German Cancer Research Center (DKFZ), German Cancer Consortium (DKTK), National Center for Tumor Diseases (NCT), Heidelberg, Germany
| | - Le-Tian Shan
- The First Affiliated Hospital, Zhejiang Chinese Medical University, Hangzhou, 310053, China
| | - Thomas Efferth
- Department of Pharmaceutical Biology, Institute of Pharmaceutical and Biomedical Sciences, Johannes Gutenberg University, Staudinger Weg 5, 55128, Mainz, Germany.
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De Cicco P, Busà R, Ercolano G, Formisano C, Allegra M, Taglialatela-Scafati O, Ianaro A. Inhibitory effects of cynaropicrin on human melanoma progression by targeting MAPK, NF-κB, and Nrf-2 signaling pathways in vitro. Phytother Res 2020; 35:1432-1442. [PMID: 33058354 DOI: 10.1002/ptr.6906] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2019] [Revised: 09/14/2020] [Accepted: 09/21/2020] [Indexed: 01/02/2023]
Abstract
Malignant melanoma is the deadliest skin cancer, due to its propensity to metastasize. MAPKs and NF-κB pathways are constitutively activated in melanoma and promote cell proliferation, cell invasion, metastasis formation, and resistance to therapeutic regimens. Thus, they represent potential targets for melanoma prevention and treatment. Phytochemicals are gaining considerable attention for the management of melanoma because of their several cellular and molecular targets. A screening of a small library of sesquiterpenes lactones selected cynaropicrin, isolated from the aerial parts of Centaurea drabifolia subsp. detonsa, for its potential anticancer effect against melanoma cells. Treatment of human melanoma cells A375 with cynaropicrin resulted in inhibition of cell proliferation and induction of caspase-3-dependent apoptosis. Furthermore, cynaropicrin reduced several cellular malignant features such migration, invasion, and colonies formation through the inhibition of ERK1/2 and NF-κB activity. Cynaropicrin was able to reduce intracellular reactive oxygen species generation, which are involved in all the stages of carcinogenesis. Indeed, cynaropicrin increased the expression of several antioxidant genes, such as glutamate-cysteine ligase and heme oxygenase-1, by promoting the activation of the transcription factor Nrf-2. In conclusion, our results individuate cynaropicrin as a potential adjuvant chemotherapeutic agent for melanoma by targeting several protumorigenic signaling pathways.
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Affiliation(s)
- Paola De Cicco
- Department of Pharmacy, School of Medicine, University of Naples Federico II, Naples, Italy
| | - Rosalia Busà
- Department of Biological, Chemical and Pharmaceutical Science and Technologies (STEBICEF), University of Palermo, Palermo, Italy.,Research Department, Mediterranean Institute for Transplantation and Advanced Specialized Therapies (IRCCS ISMETT), Palermo, Italy
| | - Giuseppe Ercolano
- Department of Pharmacy, School of Medicine, University of Naples Federico II, Naples, Italy.,Department of Pathology and Immunology, University of Geneva, Geneva, Switzerland
| | - Carmen Formisano
- Department of Pharmacy, School of Medicine, University of Naples Federico II, Naples, Italy
| | - Mario Allegra
- Department of Biological, Chemical and Pharmaceutical Science and Technologies (STEBICEF), University of Palermo, Palermo, Italy
| | | | - Angela Ianaro
- Department of Pharmacy, School of Medicine, University of Naples Federico II, Naples, Italy
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Kumar A, Agnihotri VK. NMR based profiling of sesquiterpene lactones in Saussurea lappa roots collected from different location of Western Himalaya. Nat Prod Res 2020; 36:621-624. [PMID: 32657146 DOI: 10.1080/14786419.2020.1789635] [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: 10/23/2022]
Abstract
Saussurea lappa (Decne.) Sch.Bip is a well known herbal medicine has been extensively used for many therapeutic purposes. In this article, we have accomplished targeted profiling of S. lappa roots samples collected from different locations (Pangi, Lahaul, Barot and Kullu) of the western Himalayan region using NMR. This study allowed us to assigned four major sesquiterpenes of this plant, including costunolide (CL), dehydrocostus lactone (DCL), alantolactone (AL), isoalantolactone (IAL). Quantification of sesquiterpene lactones have also been accomplished using 1HNMR, and a wide diversity in the concentration of these active metabolites was observed. It has been observed that AL and IAL were major in the samples collected from Lahaul and Barot regions, and CL and DCL were major in the samples collected from Kullu and Pangi regions. This study concludes that S. lappa roots possess wide chemical diversity, which may be due to various biotic and abiotic environmental related factors.
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Affiliation(s)
- Ashish Kumar
- Academy of Scientific and Innovative Research, CSIR-Institute of Himalayan Bioresource Technology, Palampur, India-176061.,Chemical Technology, CSIR-Institute of Himalayan Bioresource Technology, Palampur, India-176061.,Department of Chemistry, Government PG College Chamba, Himachal Pradesh, India-176314
| | - Vijai K Agnihotri
- Academy of Scientific and Innovative Research, CSIR-Institute of Himalayan Bioresource Technology, Palampur, India-176061.,Chemical Technology, CSIR-Institute of Himalayan Bioresource Technology, Palampur, India-176061
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Qi S, Yang Y, Xian X, Li X, Gao H. A new sesquiterpenoid glycoside from Saussurea involucrata. Nat Prod Res 2019; 34:943-949. [DOI: 10.1080/14786419.2018.1543683] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Shizhou Qi
- School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang, People’s Republic of China
| | - Yiren Yang
- School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang, People’s Republic of China
| | - Xiaoyan Xian
- School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang, People’s Republic of China
| | - Xianzhe Li
- School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang, People’s Republic of China
| | - Huiyuan Gao
- School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang, People’s Republic of China
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Zhao T, Li SJ, Zhang ZX, Zhang ML, Shi QW, Gu YC, Dong M, Kiyota H. Chemical constituents from the genus Saussurea and their biological activities. HETEROCYCL COMMUN 2017. [DOI: 10.1515/hc-2017-0069] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023] Open
Abstract
AbstractThe genus
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Elsebai MF, Mocan A, Atanasov AG. Cynaropicrin: A Comprehensive Research Review and Therapeutic Potential As an Anti-Hepatitis C Virus Agent. Front Pharmacol 2016; 7:472. [PMID: 28008316 PMCID: PMC5143615 DOI: 10.3389/fphar.2016.00472] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2016] [Accepted: 11/21/2016] [Indexed: 01/18/2023] Open
Abstract
The different pharmacologic properties of plants-containing cynaropicrin, especially artichokes, have been known for many centuries. More recently, cynaropicrin exhibited a potential activity against all genotypes of hepatitis C virus (HCV). Cynaropicrin has also shown a wide range of other pharmacologic properties such as anti-hyperlipidemic, anti-trypanosomal, anti-malarial, antifeedant, antispasmodic, anti-photoaging, and anti-tumor action, as well as activation of bitter sensory receptors, and anti-inflammatory properties (e.g., associated with the suppression of the key pro-inflammatory NF-κB pathway). These pharmacological effects are very supportive factors to its outstanding activity against HCV. Structurally, cynaropicrin might be considered as a potential drug candidate, since it has no violations for the rule of five and its water-solubility could allow formulation as therapeutic injections. Moreover, cynaropicrin is a small molecule that can be easily synthesized and as the major constituent of the edible plant artichoke, which has a history of safe dietary use. In summary, cynaropicrin is a promising bioactive natural product that, with minor hit-to-lead optimization, might be developed as a drug for HCV.
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Affiliation(s)
- Mahmoud F Elsebai
- Department of Pharmacognosy, Faculty of Pharmacy, Mansoura University Mansoura, Egypt
| | - Andrei Mocan
- Department of Pharmaceutical Botany, Iuliu Haţieganu University of Medicine and Pharmacy Cluj-Napoca, Romania
| | - Atanas G Atanasov
- Department of Pharmacognosy, University of ViennaVienna, Austria; Institute of Genetics and Animal Breeding of the Polish Academy of SciencesJastrzebiec, Poland
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Dekić MS, Radulović NS, Ranđelović VN, Stojanović-Radić ZZ, Veljković BP. Essential oils and diethyl ether extracts of Serbian Xeranthemum cylindraceum and X. annum: chemical composition, antimicrobial activity, and chemotaxonomic implications. Chem Biodivers 2016; 12:1378-97. [PMID: 26363882 DOI: 10.1002/cbdv.201400316] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2014] [Indexed: 02/06/2023]
Abstract
Detailed GC and GC-MS analyses of the essential oils and Et2 O extracts of two Xeranthemum species - X. cylindraceum and X. annum - resulted in the identification of 254 components, in total. Terpenoids constituted the major part of both X. cylindraceum and X. annum essential oils and extracts (51.8-65.7%, and 50.7%, resp.). Among the sesquiterpenoids, the extracts of both investigated taxa contained the guaianolide xerantholide, its 11,13-dihydro derivatives, and two additional sesquiterpene lactones: an eudesmanolide, 11,13-dihydroisoalantolactone, and a pseudoguaianolide, confertin. The last two lactones and both isomers of 11,13-dihydroxerantholide have not been previously detected in Xeranthemum species. The isolated extracts of X. cylindraceum and X. annum were tested in a broth microdilution assay against a panel of microorganisms. The tested extracts demonstrated significant antimicrobial inhibitory activity, ranging from 30 to 260 μg/ml, being most active against Bacillus cereus and Staphylococcus aureus, an important human pathogen, with MIC close in value to those of chloramphenicol. Chemotaxonomic significance of the sesquiterpene lactones' distribution in the taxa investigated in this study and those detected earlier in phylogenetically close species (up to the level of the tribe Cardueae) was also discussed.
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Affiliation(s)
- Milan S Dekić
- Department of Chemistry, Faculty of Science and Mathematics, University of Niš, Višegradska 33, RS-18000 Niš (phone:+38118223430; fax: +38118533014).,Department of Chemical and Technological Sciences, State University of Novi Pazar, Vuka Karadžića bb, RS-36300 Novi Pazar
| | - Niko S Radulović
- Department of Chemistry, Faculty of Science and Mathematics, University of Niš, Višegradska 33, RS-18000 Niš (phone:+38118223430; fax: +38118533014).
| | - Vladimir N Ranđelović
- Department of Biology and Ecology, Faculty of Science and Mathematics, University of Niš, Višegradska 33, RS-18000 Niš
| | - Zorica Z Stojanović-Radić
- Department of Biology and Ecology, Faculty of Science and Mathematics, University of Niš, Višegradska 33, RS-18000 Niš
| | - Bojana P Veljković
- Department of Biomedical Sciences, State University of Novi Pazar, Vuka Karadžića bb, RS-36300, Novi Pazar
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Abstract
The ethanol extract of Centaurea aegyptiaca aerial parts afforded two new chlorinated bioactive guaianolides, cenegyptin A (1) and cenegyptin B (2), in addition to four known sesquiterpenes (3-6). Their identities were established on the basis of their spectral data. The cytotoxicity (IC50, μM) of compounds 1-6 were evaluated against hepatic (HEPG2) and laryngeal (HEP2) carcinoma cell lines in comparison with normal fibroblasts (BHK). Compound 1 showed cytotoxic activity against HEPG2 and HEP2 with IC50 values of 7.2 ± 0.04 and 7.5 ± 0.02, respectively. However, compound 2 exhibited only a limited toxicity against both cell lines.
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Affiliation(s)
- Hanan G. Sary
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Health Sciences Center, Kuwait University, Safat 13110, Kuwait
- Department of Pharmacognosy, Faculty of Pharmacy, Ain Shams University, Cairo, Egypt
| | | | - Khaled Y. Orabi
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Health Sciences Center, Kuwait University, Safat 13110, Kuwait
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Cao K, Qian W, Xu Y, Zhou Z, Zhang Q, Zhang X. A new sesquiterpenoid from Saussurea lappa roots. Nat Prod Res 2016; 30:2160-3. [DOI: 10.1080/14786419.2016.1149708] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- Kun Cao
- College of Chemistry and Chemical Engineering, Chongqing University, Chongqing, P.R. China
- Defense Key Disciplines Lab of Novel Micro-nano Devices and System Techonlogy, Chongqing University, Chongqing, P.R. China
| | - Wei Qian
- College of Chemistry and Chemical Engineering, Chongqing University, Chongqing, P.R. China
- Defense Key Disciplines Lab of Novel Micro-nano Devices and System Techonlogy, Chongqing University, Chongqing, P.R. China
| | - Yi Xu
- College of Chemistry and Chemical Engineering, Chongqing University, Chongqing, P.R. China
- Defense Key Disciplines Lab of Novel Micro-nano Devices and System Techonlogy, Chongqing University, Chongqing, P.R. China
- International R&D center of Micro-nano Systems and New Materials Technology, Chongqing University, Chongqing, P.R. China
| | - Zhen Zhou
- College of Chemistry and Chemical Engineering, Chongqing University, Chongqing, P.R. China
- Defense Key Disciplines Lab of Novel Micro-nano Devices and System Techonlogy, Chongqing University, Chongqing, P.R. China
| | - Qing Zhang
- College of Chemistry and Chemical Engineering, Chongqing University, Chongqing, P.R. China
- Defense Key Disciplines Lab of Novel Micro-nano Devices and System Techonlogy, Chongqing University, Chongqing, P.R. China
| | - Xiaofeng Zhang
- College of Chemistry and Chemical Engineering, Chongqing University, Chongqing, P.R. China
- Defense Key Disciplines Lab of Novel Micro-nano Devices and System Techonlogy, Chongqing University, Chongqing, P.R. China
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Marchenko MM. PROPERTIES OF THE SESQUITERPENE LACTONES OF in vitro CULTIVATED Saussurea discolor (WILLD.) DC. AND S. porcii DEGEN. BIOTECHNOLOGIA ACTA 2014. [DOI: 10.15407/biotech7.02.086] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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Bruno M, Bancheva S, Rosselli S, Maggio A. Sesquiterpenoids in subtribe Centaureinae (Cass.) Dumort (tribe Cardueae, Asteraceae): distribution, (13)C NMR spectral data and biological properties. PHYTOCHEMISTRY 2013; 95:19-93. [PMID: 23948259 DOI: 10.1016/j.phytochem.2013.07.002] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/15/2012] [Revised: 07/05/2013] [Accepted: 07/05/2013] [Indexed: 05/22/2023]
Abstract
Asteraceae Bercht. & J. Presl is one of the biggest and most economically important plant families. The taxonomy and phylogeny of Asteraceae is rather complex and according to the latest and most reliable taxonomic classification of Panero & Funk, based on the analysis of nine chloroplast regions, the family is divided into 12 subfamilies and 35 tribes. One of the largest tribes of Asteraceae is Cardueae Cass. with four subtribes (Carlininae, Echinopinae, Carduinae and Centaureinae) and more than 2500 species. Susanna & Garcia-Jacas have organized the genera of Centaureinae (about 800 species) into seven informal groups, which recent molecular studies have confirmed: 1. Basal genera; 2. Volutaria group; 3. Rhaponticum group; 4. Serratula group; 5. Carthamus group; 6. Crocodylium group; 7. Centaurea group. This review summarizes reports on sesquiterpenoids from the Centaureinae subtribe of the Asteraceae family, as well as the (13)C NMR spectral data described in the literature. It further reviews studies concerning the biological activities of these metabolites. For this work, literature data on sesquiterpenes from the Centaureinae subtribe were retrieved with the help of the SciFinder database and other similar data banks. All entries from 1958 until the end of 2011 were considered. This review is addressed to scientists working in the metabolomics field such as chemists, botanists, etc., the spectroscopic data reported make this work a good tool for structural elucidation, the biological section gives useful information to those who wish to study the structure activity relationships.
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Affiliation(s)
- Maurizio Bruno
- STEBICEF, Section of Chemistry, University of Palermo, Viale delle Scienze, Parco d'Orleans II, 90128 Palermo, Italy.
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Yang JL, Wang R, Liu LL, Shi YP. Phytochemicals and biological activities of Saussurea species. JOURNAL OF ASIAN NATURAL PRODUCTS RESEARCH 2010; 12:162-175. [PMID: 20390761 DOI: 10.1080/10286020903496455] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
The genus Saussurea has been studied from phytochemical and pharmacological viewpoints for years, which resulted in the discovery of hundreds of secondary metabolites with various kinds of bioactivities. This review summarizes the research progress of the genus of Saussurea in the phytochemical and pharmacological viewpoints, which covered the period of 1990-June 2009.
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Affiliation(s)
- Jun-Li Yang
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, China
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Abstract
This review covers the isolation, structural determination, synthesis and chemical and microbiological transformations of natural sesquiterpenoids. 423 references are cited.
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Affiliation(s)
- Braulio M Fraga
- Instituto de Productos Naturales y Agrobiología, CSIC, 38206, La Laguna, Tenerife, Canary Islands, Spain.
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Fu JJ, Jin HZ, Shen YH, Zhang WD, Xu WZ, Zeng Q, Yan SK. Two Novel Monoterpene Alkaloid Dimers fromIncarvillea arguta. Helv Chim Acta 2007. [DOI: 10.1002/hlca.200790221] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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