1
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Hu Y, Saito Y, Matsuo Y, Gong X, Tanaka T. New Benzofuran Oligomers from the Roots of Eupatorium heterophyllum Collected in China. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27248856. [PMID: 36557988 PMCID: PMC9787490 DOI: 10.3390/molecules27248856] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/22/2022] [Revised: 12/08/2022] [Accepted: 12/09/2022] [Indexed: 12/15/2022]
Abstract
The chemical constituents of two root samples of Eupatorium heterophyllum DC. collected in Yunnan Province, China, were investigated. Five new oligomeric benzofurans (1-5), nine new benzofuran/dihydrobenzofuran derivatives, and a new thymol analog were isolated, and their structures were determined using extensive spectroscopic techniques, such as 1D and 2D NMR spectroscopy and DFT calculations of the CD spectra. Most of the new compounds, including oligomeric benzofurans (1-5), were obtained from only one of the root samples. Furthermore, this is the first example that produces oligomeric benzofurans in this plant. These results imply that diversification of secondary metabolites in E. heterophyllum is ongoing. Plausible biosynthetic pathways for 1-5 are also proposed.
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Affiliation(s)
- Yiming Hu
- Graduate School of Biomedical Sciences, Nagasaki University, 1-14 Bunkyo-machi, Nagasaki 852-8521, Japan
| | - Yoshinori Saito
- Graduate School of Biomedical Sciences, Nagasaki University, 1-14 Bunkyo-machi, Nagasaki 852-8521, Japan
- Correspondence: (Y.S.); (T.T.); Tel.: +81-95-819-2433 (Y.S.); +81-95-819-2432 (T.T.)
| | - Yosuke Matsuo
- Graduate School of Biomedical Sciences, Nagasaki University, 1-14 Bunkyo-machi, Nagasaki 852-8521, Japan
| | - Xun Gong
- Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China
| | - Takashi Tanaka
- Graduate School of Biomedical Sciences, Nagasaki University, 1-14 Bunkyo-machi, Nagasaki 852-8521, Japan
- Correspondence: (Y.S.); (T.T.); Tel.: +81-95-819-2433 (Y.S.); +81-95-819-2432 (T.T.)
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2
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Chen Z, Ke CQ, Zhou S, Feng L, Tang C, Ye Y. Ten undescribed cadinane-type sesquiterpenoids from Eupatorium chinense. Fitoterapia 2021; 156:105091. [PMID: 34826555 DOI: 10.1016/j.fitote.2021.105091] [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: 10/29/2021] [Revised: 11/18/2021] [Accepted: 11/19/2021] [Indexed: 11/19/2022]
Abstract
Ten undescribed cadinane-type sesquiterpenes (1-10) were isolated from the whole plant of Eupatorium chinense. Their planar structures were mainly elucidated by extensive analysis of spectroscopic data and DFT NMR calculations. The absolute configurations of 1, 2, and 3 were determined by TDDFT ECD calculations while those of compounds 4-7 and 9 were confirmed by single crystal X-ray diffraction experiments. Compounds 2 and 3 are a pair of C-10 epimers, compounds 4 and 5 a pair of C-1 epimers, and compounds 9 and 10 a pair of compounds isomerized at both C-1 and C-10. A possible biosynthetic pathway for these new sesquiterpenes was proposed.
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Affiliation(s)
- Ziang Chen
- State Key Laboratory of Drug Research, and Natural Products Chemistry Department, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China; University of Chinese Academy of Sciences, No. 19A Yuquan Road, Beijing 100049, China
| | - Chang-Qiang Ke
- State Key Laboratory of Drug Research, and Natural Products Chemistry Department, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
| | - Shuaizhen Zhou
- State Key Laboratory of Drug Research, and Natural Products Chemistry Department, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
| | - Lu Feng
- State Key Laboratory of Drug Research, and Natural Products Chemistry Department, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
| | - Chunping Tang
- State Key Laboratory of Drug Research, and Natural Products Chemistry Department, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
| | - Yang Ye
- State Key Laboratory of Drug Research, and Natural Products Chemistry Department, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China; University of Chinese Academy of Sciences, No. 19A Yuquan Road, Beijing 100049, China; School of Life Science and Technology, ShanghaiTech University, Shanghai 201210, China.
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3
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Butala S, Suvarna V, Mallya R, Khan T. An insight into cytotoxic activity of flavonoids and sesquiterpenoids from selected plants of Asteraceae species. Chem Biol Drug Des 2021; 98:1116-1130. [PMID: 34626448 DOI: 10.1111/cbdd.13970] [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: 08/03/2021] [Revised: 09/29/2021] [Accepted: 10/03/2021] [Indexed: 11/26/2022]
Abstract
Cancer continues to be a disease that is difficult to cure and the current therapeutic regimen is associated with severe side effects and the issue of emerging drug resistance. According to the World Health Organization fact sheet 2017, cancer is the second major cause of morbidity and death and a 70% rise in new cases is expected over the next 20 years. The quest for new anticancer chemical entities is a thrust area identified by many government agencies and industry research and development groups. Nature-derived entities have played a very important role in therapeutics especially cancer Asteraceae is a large family consisting of around 1700 genera and more than 24,000 species. Several genera belonging to this family have ethnopharmacological uses such as cytotoxicity, antidiabetic, hepatoprotective and antioxidant. This review highlights the cytotoxic potential of structurally novel flavonoids and sesquiterpenes isolated from some selected species of Asteraceae plants native to Asia, Europe, parts of Africa and America. The existing literature suggests that sesquiterpenes and flavonoids from various species of Asteraceae represent a viable class of secondary metabolites with strong cytotoxic potential. These have demonstrated potent activity in cell cycle arrest, inhibition of neoangiogenesis and induction of apoptosis. The sesquiterpenoids exhibiting potent cytotoxic activity were found to contain an α- methylene-butyrolactone conjugated with an exomethylene group and the flavonoids obtained from various plant species of Blumea suggest that a dihydroxy ring system present in structure is essential for activity. Most of the published literature contains in vitro data of extracts/secondary metabolites with very few in vivo studies. Additionally, there is dearth of knowledge on mechanisms of cytotoxic activity and molecular targets impacted by the active secondary metabolites. This review hopes to fuel interest in researchers to take up detailed investigations on these scaffolds that could contribute significantly as potential leads in anticancer drug development.
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Affiliation(s)
- Sahil Butala
- Department of Quality Assurance, Indoco Remedies, Rabale, Navi Mumbai, India
| | - Vasanti Suvarna
- Department of Pharmaceutical Chemistry & QA, SVKM's Dr. Bhanuben Nanavati College of Pharmacy, Mumbai, India
| | - Rashmi Mallya
- Department of Pharmacognosy, SVKM's Dr. Bhanuben Nanavati College of Pharmacy, Mumbai, India
| | - Tabassum Khan
- Department of Pharmaceutical Chemistry & QA, SVKM's Dr. Bhanuben Nanavati College of Pharmacy, Mumbai, India
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Xu F, Zhang L, Zhou C, Mo J, Shen S, Zhang T, Li J, Lin L, Wu R, Gan L. Alkyl-benzofuran dimers from Eupatorium chinense with insulin-sensitizing and anti-inflammatory activities. Bioorg Chem 2021; 113:105030. [PMID: 34089946 DOI: 10.1016/j.bioorg.2021.105030] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2021] [Revised: 05/22/2021] [Accepted: 05/24/2021] [Indexed: 12/20/2022]
Abstract
Five new racemic alkyl-benzofuran dimers, (±)-dieupachinins I-M (1-5), were isolated from the root tubers of Eupatorium chinense, a well-known traditional Chinese medicine for the treatment of diphtheria in Guangdong province. The structures of these compounds, especially the first examples of 12,10'-epoxy dimer dieupachinin I (1), 12-nor-dimer dieupachinin J (2), and 12,12'-dinor-dimer dieupachinin K (3), were elucidated by spectroscopic data analysis. Chiral resolution were further carried out on a cellulose column by HPLC, and compounds 2-5 were successfully separated into two enantiomers, respectively. The absolute configurations of (+)-(2-5) and (-)-(2-5) were established by theoretical ECD calculation. All the compounds were evaluated for insulin-stimulated glucose uptake in C2C12 myotubes and (±)-dieupachinin I (1) exhibited the best activity. Compound 1 enhanced insulin-stimulated glucose uptake via activating the insulin receptor substrate 1/protein kinase B/glycogen synthase kinase-3β signaling pathway. Moreover, all the isolates were tested for their nitric oxygen (NO) inhibitory effects in lipopolysaccharide-treated RAW264.7 macrophages, and compounds (±)-1, (±)-2, and (±)-4 showed promising inhibitory effects with IC50 values of 6.42 ± 1.85, 6.29 ± 1.94, and 16.03 ± 2.07 μM, respectively. (±)-Dieupachinin I (1) again dose-dependently suppressed LPS-induced expression of inducible NO synthase and nuclear translocation of p65.
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Affiliation(s)
- Fan Xu
- College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, People's Republic of China
| | - Lisha Zhang
- College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, People's Republic of China
| | - Changxin Zhou
- College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, People's Republic of China
| | - Jianxia Mo
- College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, People's Republic of China
| | - Shengnan Shen
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macao 999078, People's Republic of China
| | - Tian Zhang
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macao 999078, People's Republic of China
| | - Jie Li
- Department of Pharmacy, School of Medicine, Zhejiang University City College, Hangzhou 310015, People's Republic of China
| | - Ligen Lin
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macao 999078, People's Republic of China.
| | - Rihui Wu
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529020, People's Republic of China.
| | - Lishe Gan
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529020, People's Republic of China; College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, People's Republic of China.
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Zhang QQ, Zhou JH, Chen Y, Zhang ZM, Liu ZX, Guo ZY, Liu CX, Zou K. Seven new chemical constituents from the underground parts of Eupatorium chinense. Fitoterapia 2020; 146:104674. [DOI: 10.1016/j.fitote.2020.104674] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2020] [Revised: 06/12/2020] [Accepted: 06/12/2020] [Indexed: 02/02/2023]
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7
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Jiang Q, Zhu Z, Shou P, Teng F, Zhu Y, Zhao H, Yang B. Targeting pharmacophore with probe-reactivity-guided fractionation to precisely identify electrophilic sesquiterpenes and its activity of anti-TNBC. PHYTOCHEMICAL ANALYSIS : PCA 2020; 31:322-332. [PMID: 31849131 DOI: 10.1002/pca.2898] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/26/2019] [Revised: 10/13/2019] [Accepted: 10/15/2019] [Indexed: 06/10/2023]
Abstract
INTRODUCTION Innovative strategy is urgently needed to precisely discover novel natural products as lead compounds for development of new drugs against orphan diseases such as triple-negative breast cancer (TNBC). Herein, we describe a targeting pharmacophore with probe-reactivity-guided strategy for the discovery of electrophilic sesquiterpene (ES), a class of bioactive natural product. OBJECTIVE This study aimed to identify pharmacophore, based on pharmacophore with probe-reactivity-guided strategy for precisely discovering ESs from ethyl acetate extract of Eupatorium chinense L. (EEEChL) METHODOLOGY: MTT assay combined with ultra-performance liquid chromatography (UPLC) analysis was used to identify pharmacophore. UPLC-mass spectrometry (MS) was applied to carefully compare the intrinsic reactivity characteristics of two chemoselective nucleophilic probes: glutathione (GSH) and 4-bromothiophenol (BTP) reaction with ESs. ESs was isolated and identified from EEEChL by phytochemical methods. Furthermore, stoichiometric ratio and binding site of one typical ES 8β-[4'-hydroxytigloyloxy]-5-desoxy-8-desacyleuparotin (HDDE) reaction with BTP were studied by UPLC-quadrupole time-of-flight (Q-TOF)-MS and two-dimensional nuclear magnetic resonance (NMR). RESULTS Eleven ESs were identified from EEEChL, MTT assay illustrated that all of the 11 ESs possess fairly good anti-TNBC activity CONCLUSIONS: Electrophilic groups were confirmed as pharmacophore of bioactive compounds contained in EEEChL. An optimised halogenated aromatic probe BTP furnishes ES-BTP conjugates that are highly conspicuous via MS by virtue of a unique isotopic bromine signature, conjugates also have a considerable separation on C18 column. The new probe-reactivity-guided strategy can effectively improve the traditional bioassay-guided approaches, and significantly increase the probability of obtaining designated bioactive compounds.
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Affiliation(s)
- QingLi Jiang
- College of Pharmaceutical Sciences, Zhejiang Chinese Medical University, No. 260 Baichuan Street, Hangzhou, 311402, P. R. China
| | - ZhiHui Zhu
- College of Pharmaceutical Sciences, Zhejiang Chinese Medical University, No. 260 Baichuan Street, Hangzhou, 311402, P. R. China
| | - PanTing Shou
- College of Pharmaceutical Sciences, Zhejiang Chinese Medical University, No. 260 Baichuan Street, Hangzhou, 311402, P. R. China
| | - Fei Teng
- College of Pharmaceutical Sciences, Zhejiang Chinese Medical University, No. 260 Baichuan Street, Hangzhou, 311402, P. R. China
| | - Ying Zhu
- College of Pharmaceutical Sciences, Zhejiang Chinese Medical University, No. 260 Baichuan Street, Hangzhou, 311402, P. R. China
| | - HuaJun Zhao
- College of Pharmaceutical Sciences, Zhejiang Chinese Medical University, No. 260 Baichuan Street, Hangzhou, 311402, P. R. China
| | - Bo Yang
- College of Pharmaceutical Sciences, Zhejiang Chinese Medical University, No. 260 Baichuan Street, Hangzhou, 311402, P. R. China
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8
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Identification of an endophytic fungus Pilidiella guizhouensis isolated from Eupatorium chinense L. and its extracellular polysaccharide. Biologia (Bratisl) 2020. [DOI: 10.2478/s11756-020-00465-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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9
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Benzofurans from Eupatorium chinense enhance insulin-stimulated glucose uptake in C2C12 myotubes and suppress inflammatory response in RAW264.7 macrophages. Fitoterapia 2019; 134:346-354. [DOI: 10.1016/j.fitote.2019.03.007] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2019] [Revised: 03/05/2019] [Accepted: 03/07/2019] [Indexed: 11/15/2022]
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10
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Wang L, Qin W, Tian L, Zhang XX, Lin F, Cheng F, Chen JF, Liu CX, Guo ZY, Proksch P, Zou K. Caroguaianolide A–E, five new cytotoxic sesquiterpene lactones from Carpesium abrotanoides L. Fitoterapia 2018; 127:349-355. [DOI: 10.1016/j.fitote.2018.03.015] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2018] [Revised: 03/12/2018] [Accepted: 03/31/2018] [Indexed: 02/01/2023]
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11
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Yu X, Zhang Q, Tian L, Guo Z, Liu C, Chen J, Ebrahim W, Liu Z, Proksch P, Zou K. Germacrane-Type Sesquiterpenoids with Antiproliferative Activities from Eupatorium chinense. JOURNAL OF NATURAL PRODUCTS 2018; 81:85-91. [PMID: 29280632 DOI: 10.1021/acs.jnatprod.7b00693] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Ten new germacrane-type sesquiterpenoids (1-10) were isolated from a whole plant extract of Eupatorium chinense. The structures were elucidated by analysis of their NMR and MS data as well as by comparison with literature values. The absolute configuration of eupachinsin A (1) was determined by single-crystal X-ray diffraction analysis. Compounds 3 and 4 exhibited cytotoxicity against a human breast cancer cell line (MDA-MB-231), with IC50 values of 0.8 and 3.4 μM, respectively. In addition, compounds 3-5 showed cytotoxicity against the human hepatocellular carcinoma cell line (HepG2), with IC50 values ranging from 3.6 to 7.6 μM.
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Affiliation(s)
- Xiaoqin Yu
- Hubei Key Laboratory of Natural Products Research and Development, College of Biological and Pharmaceutical Sciences, China Three Gorges University , Yichang 443002, People's Republic of China
- Institute of Pharmaceutical Biology and Biotechnology, Heinrich-Heine-University Duesseldorf , 40225 Duesseldorf, Germany
| | - Qingqing Zhang
- Hubei Key Laboratory of Natural Products Research and Development, College of Biological and Pharmaceutical Sciences, China Three Gorges University , Yichang 443002, People's Republic of China
| | - Li Tian
- Hubei Key Laboratory of Natural Products Research and Development, College of Biological and Pharmaceutical Sciences, China Three Gorges University , Yichang 443002, People's Republic of China
| | - Zhiyong Guo
- Hubei Key Laboratory of Natural Products Research and Development, College of Biological and Pharmaceutical Sciences, China Three Gorges University , Yichang 443002, People's Republic of China
| | - Chengxiong Liu
- Hubei Key Laboratory of Natural Products Research and Development, College of Biological and Pharmaceutical Sciences, China Three Gorges University , Yichang 443002, People's Republic of China
| | - Jianfeng Chen
- Hubei Key Laboratory of Natural Products Research and Development, College of Biological and Pharmaceutical Sciences, China Three Gorges University , Yichang 443002, People's Republic of China
| | - Weaam Ebrahim
- Institute of Pharmaceutical Biology and Biotechnology, Heinrich-Heine-University Duesseldorf , 40225 Duesseldorf, Germany
- Department of Pharmacognosy, Faculty of Pharmacy, Mansoura University , Mansoura 35516, Egypt
| | - Zhen Liu
- Institute of Pharmaceutical Biology and Biotechnology, Heinrich-Heine-University Duesseldorf , 40225 Duesseldorf, Germany
| | - Peter Proksch
- Institute of Pharmaceutical Biology and Biotechnology, Heinrich-Heine-University Duesseldorf , 40225 Duesseldorf, Germany
| | - Kun Zou
- Hubei Key Laboratory of Natural Products Research and Development, College of Biological and Pharmaceutical Sciences, China Three Gorges University , Yichang 443002, People's Republic of China
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12
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Ke Z, Li M, Liu X, Tan S, Zhou Z, Huang C. 2-Hydroxyeupatolide attenuates inflammatory responses via the inhibiting of NF-κB signaling pathways. RSC Adv 2017. [DOI: 10.1039/c7ra06006h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
2-Hydroxyeupatolide (2-HE), a sesquiterpene lactone, is a potential agent to improve LPS-induced acute mouse inflammation damage.
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Affiliation(s)
- Zunli Ke
- Drug Discovery Lab
- School of Pharmacy
- Shanghai University of Traditional Chinese Medicine
- Shanghai 201203
- China
| | - Mingxia Li
- Drug Discovery Lab
- School of Pharmacy
- Shanghai University of Traditional Chinese Medicine
- Shanghai 201203
- China
| | - Xin Liu
- Drug Discovery Lab
- School of Pharmacy
- Shanghai University of Traditional Chinese Medicine
- Shanghai 201203
- China
| | - Si Tan
- Life Science and Technology Institute
- Yangtze Normal University
- Chongqing
- PR China
| | - Zhiqin Zhou
- College of Horticulture and Landscape Architecture
- Southwest University
- Chongqing 400716
- China
| | - Cheng Huang
- Drug Discovery Lab
- School of Pharmacy
- Shanghai University of Traditional Chinese Medicine
- Shanghai 201203
- China
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13
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Wang WJ, Wang L, Liu Z, Jiang RW, Liu ZW, Li MM, Zhang QW, Dai Y, Li YL, Zhang XQ, Ye WC. Antiviral benzofurans from Eupatorium chinense. PHYTOCHEMISTRY 2016; 122:238-245. [PMID: 26675360 DOI: 10.1016/j.phytochem.2015.11.013] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/04/2015] [Revised: 11/22/2015] [Accepted: 11/24/2015] [Indexed: 06/05/2023]
Abstract
Eleven benzofuran dimers, (+)-dieupachinins A-E, (-)-dieupachinins A-E and dieupachinin F, a benzofuran trimer trieupachinin A, as well as seven known compounds were isolated from the roots of Eupatorium chinense. The enantiomers of racemates dieupachinins A-E were separated by chiral HPLC. The structures with absolute configurations were elucidated on the basis of spectroscopic data, X-ray diffraction analysis, and circular dichroism experiments. The isolated compounds were evaluated for their in vitro antiviral activities against respiratory syncytial virus (RSV).
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Affiliation(s)
- Wen-Jing Wang
- Guangdong Province Key Laboratory of Pharmacodynamic Constituents of TCM and New Drugs Research, College of Pharmacy, Jinan University, Guangzhou 510632, PR China; State Key Laboratory of Quality Research in Chinese Medicine and Institute of Chinese Medical Sciences, University of Macau, Macao
| | - Lei Wang
- Guangdong Province Key Laboratory of Pharmacodynamic Constituents of TCM and New Drugs Research, College of Pharmacy, Jinan University, Guangzhou 510632, PR China; Joint Laboratory for Neuroscience & Innovative Drug Research, Jinan University, Guangzhou 510632, PR China
| | - Zhong Liu
- Guangdong Province Key Laboratory of Pharmacodynamic Constituents of TCM and New Drugs Research, College of Pharmacy, Jinan University, Guangzhou 510632, PR China
| | - Ren-Wang Jiang
- Guangdong Province Key Laboratory of Pharmacodynamic Constituents of TCM and New Drugs Research, College of Pharmacy, Jinan University, Guangzhou 510632, PR China
| | - Zhi-Wen Liu
- Guangdong Province Key Laboratory of Pharmacodynamic Constituents of TCM and New Drugs Research, College of Pharmacy, Jinan University, Guangzhou 510632, PR China; Joint Laboratory for Neuroscience & Innovative Drug Research, Jinan University, Guangzhou 510632, PR China
| | - Man-Mei Li
- Guangdong Province Key Laboratory of Pharmacodynamic Constituents of TCM and New Drugs Research, College of Pharmacy, Jinan University, Guangzhou 510632, PR China
| | - Qing-Wen Zhang
- State Key Laboratory of Quality Research in Chinese Medicine and Institute of Chinese Medical Sciences, University of Macau, Macao
| | - Yi Dai
- Guangdong Province Key Laboratory of Pharmacodynamic Constituents of TCM and New Drugs Research, College of Pharmacy, Jinan University, Guangzhou 510632, PR China
| | - Yao-Lan Li
- Guangdong Province Key Laboratory of Pharmacodynamic Constituents of TCM and New Drugs Research, College of Pharmacy, Jinan University, Guangzhou 510632, PR China
| | - Xiao-Qi Zhang
- Guangdong Province Key Laboratory of Pharmacodynamic Constituents of TCM and New Drugs Research, College of Pharmacy, Jinan University, Guangzhou 510632, PR China; Joint Laboratory for Neuroscience & Innovative Drug Research, Jinan University, Guangzhou 510632, PR China
| | - Wen-Cai Ye
- Guangdong Province Key Laboratory of Pharmacodynamic Constituents of TCM and New Drugs Research, College of Pharmacy, Jinan University, Guangzhou 510632, PR China; Joint Laboratory for Neuroscience & Innovative Drug Research, Jinan University, Guangzhou 510632, PR China.
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Dastoorani P, Maghsoodlou MT, Khalilzadeh MA, García-Granda S, Torre-Fernández L, Sarina E. Diastereoselective Synthesis of Novel Benzofuran Derivatives by Euparin as a Natural Compound with DMAD in the Presence of Trialkyl Phosphite. HETEROATOM CHEMISTRY 2015. [DOI: 10.1002/hc.21306] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Parvaneh Dastoorani
- Department of Chemistry; The University of Sistan and Baluchestan; Zahedan Iran
| | | | | | - Santiago García-Granda
- Department of Physical and Analytical Chemistry; University of Oviedo-CINN; Oviedo Spain
| | - Laura Torre-Fernández
- Department of Physical and Analytical Chemistry; University of Oviedo-CINN; Oviedo Spain
| | - Evan Sarina
- Department of Chemistry; University of California; Davis CA 95616 USA
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15
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Liu P, Liu D, Li W, Zhao T, Sauriol F, Gu Y, Shi Q, Zhang M. Chemical Constituents of Plants from the Genus
Eupatorium
(1904–2014). Chem Biodivers 2015; 12:1481-515. [DOI: 10.1002/cbdv.201400227] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2014] [Indexed: 01/24/2023]
Affiliation(s)
- Pei‐Yu Liu
- Department of Natural Product Chemistry, School of Pharmaceutical Sciences, Hebei Medical University, 361 Zhongshan East Road, Shijiazhuang 050017 , P. R. China, (phone: +86‐311‐86265634)
| | - Dan Liu
- Department of Natural Product Chemistry, School of Pharmaceutical Sciences, Hebei Medical University, 361 Zhongshan East Road, Shijiazhuang 050017 , P. R. China, (phone: +86‐311‐86265634)
| | - Wei‐Huan Li
- Hebei United University Affiliated Hospital, Tangshan, P. R. China
| | - Ting Zhao
- Department of Natural Product Chemistry, School of Pharmaceutical Sciences, Hebei Medical University, 361 Zhongshan East Road, Shijiazhuang 050017 , P. R. China, (phone: +86‐311‐86265634)
| | - Françoise Sauriol
- Department of Chemistry, Queen's University, Kingston, Ontario K7L 3N6, Canada
| | - Yu‐Cheng Gu
- Department of Natural Product Chemistry, School of Pharmaceutical Sciences, Hebei Medical University, 361 Zhongshan East Road, Shijiazhuang 050017 , P. R. China, (phone: +86‐311‐86265634)
- Jealott's Hill International Research Centre, Syngenta, Berkshire RG42 6EY, UK
| | - Qing‐Wen Shi
- Department of Natural Product Chemistry, School of Pharmaceutical Sciences, Hebei Medical University, 361 Zhongshan East Road, Shijiazhuang 050017 , P. R. China, (phone: +86‐311‐86265634)
| | - Man‐Li Zhang
- Department of Natural Product Chemistry, School of Pharmaceutical Sciences, Hebei Medical University, 361 Zhongshan East Road, Shijiazhuang 050017 , P. R. China, (phone: +86‐311‐86265634)
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16
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Chen LC, Lee TH, Sung PJ, Shu CW, Lim YP, Cheng MJ, Kuo WL, Chen JJ. New thymol derivatives and cytotoxic constituents from the root of Eupatorium cannabinum ssp. asiaticum. Chem Biodivers 2015; 11:1374-80. [PMID: 25238078 DOI: 10.1002/cbdv.201300392] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2013] [Indexed: 11/08/2022]
Abstract
Two new thymol (=5-methyl-2-(1-methylethyl)phenol) derivatives, 8,10-didehydro-9-(3-methylbutanoyl)thymol 3-O-tiglate (1) and 9-O-angeloyl-8-methoxythymol 3-O-isobutyrate (2), were isolated from the root of Eupatorium cannabinum ssp. asiaticum, together with six known compounds, 3-8. The structures of 1 and 2 were determined through extensive 1D/2D-NMR and MS analyses. Among the isolates, 9-acetoxy-8,10-epoxythymol 3-O-tiglate (3) was the most cytotoxic, with IC50 values of 0.02±0.01, 1.02±0.07, and 1.36±0.12 μg/ml, respectively, against DLD-1, CCRF-CEM, and HL-60 cell lines. In addition, 10-acetoxy-9-O-angeloyl-8-hydroxythymol (4) and eupatobenzofuran (6) exhibited cytotoxicities, with IC50 values of 1.14±0.16 and 2.63±0.22, and 7.63±0.94 and 2.31±0.14 μg/ml, respectively, against DLD-1 and CCRF-CEM cell lines.
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Affiliation(s)
- Li-Chai Chen
- Department of Pharmacy of Zuoying Branch of Kaohsiung Armed Forces General Hospital, Kaohsiung 813, Taiwan
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Wang WJ, Wang L, Huang XJ, Jiang RW, Yang XL, Zhang DM, Chen WM, Tang BQ, Wang Y, Zhang XQ, Ye WC. Two pairs of new benzofuran enantiomers with unusual skeletons from Eupatorium chinense. Tetrahedron Lett 2013. [DOI: 10.1016/j.tetlet.2013.03.125] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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19
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Discovery of structurally diverse and bioactive compounds from plant resources in China. Acta Pharmacol Sin 2012; 33:1147-58. [PMID: 22941284 DOI: 10.1038/aps.2012.105] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
This review describes the major discoveries of structurally diverse and/or biologically significant compounds from plant resources in China, mainly from the traditional Chinese medicines (TCMs) since the establishment of our research group in 1999. In the past decade, a large array of biologically significant and novel structures has been identified from plant resources (or TCM) in our laboratory. The structural modification of several biologically important compounds led to more than 400 derivatives, some of which exhibited significantly improved activities and provided opportunities to elucidate the structure-activity relationship of the related compound class. These findings are important for drug discovery and help us understand the biological basis for the traditional applications of these plants in TCM.
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Wang WJ, Wang Y, Zhang QW, Zhang XQ, Yang TT, Dai Y, Wang L, Zhang LH, Ye WC. Chemical constituents from Eupatorium chinense. JOURNAL OF ASIAN NATURAL PRODUCTS RESEARCH 2011; 13:845-850. [PMID: 21830890 DOI: 10.1080/10286020.2011.598149] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Two new monoterpenoid glycosides, α-(E)-acaridiol 8-O-β-d-glucopyranoside (1) and α-(E)-acaridiol 9-O-β-d-glucopyranoside (2), as well as a new thiophen, 2-acetyl-3-hydroxy-5-(prop-1-ynyl)thiophen 3-O-β-d-glucopyranoside (3), were isolated from the roots of Eupatorium chinense. Their structures were determined on the basis of extensive spectroscopic and chemical analyses.
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Affiliation(s)
- Wen-Jing Wang
- Institute of Traditional Chinese Medicine and Natural Products, College of Pharmacy, Jinan University, Guangzhou 510632, China
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Chen JJ, Tsai YC, Hwang TL, Wang TC. Thymol, benzofuranoid, and phenylpropanoid derivatives: anti-inflammatory constituents from Eupatorium cannabinum. JOURNAL OF NATURAL PRODUCTS 2011; 74:1021-1027. [PMID: 21391659 DOI: 10.1021/np100923z] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Five new compounds, 9-O-angeloyl-8,10-dehydrothymol (1), 9-(3-methylbutanoyl)-8,10-dehydrothymol (2), eupatobenzofuran (3), 2-hydroxy-2,6-dimethylbenzofuran-3(2H)-one (4), and 1-(2-hydroxy-4-methylphenyl)propan-1,2-dione (5), have been isolated from the aerial part of Eupatorium cannabinum subsp. asiaticum, together with 16 known compounds (6-21). Compounds 6-8, 11, 13, and 15 exhibited inhibition (IC50 values≤18.4 μM) of superoxide anion generation by human neutrophils in response to formyl-L-methionyl-L-leucyl-L-phenylalanine/cytochalasin B (fMLP/CB). Compounds 2, 3, 10, 13, and 15 inhibited fMLP/CB-induced elastase release with IC50 values≤18.3 μM.
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Affiliation(s)
- Jih-Jung Chen
- Graduate Institute of Pharmaceutical Technology, Tajen University, Pingtung 907, Taiwan, Republic of China.
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Saito Y, Matsuo S, Sutoyo S, Tori M. Nine New Norlabdane Diterpenoids from the Leaves of Austroeupatorium inulifolium. Helv Chim Acta 2011. [DOI: 10.1002/hlca.201000207] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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LIAO PY, ZHANG YJ, WANG YF, WANG D, YANG CR. Chemical Constituents of Guangdong Tu-Niu-Xi ( Eupatorium chinense, Compositae). ACTA ACUST UNITED AC 2010. [DOI: 10.3724/sp.j.1143.2010.09214] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Feng ZM, Song S, Xia PF, Jiang JS, Zhang PC. Three New Sesquiterpenoids fromChrysanthemum indicumL. Helv Chim Acta 2009. [DOI: 10.1002/hlca.200900017] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Abstract
Two new diterpenoids, ent-17-hydroxyl-16beta-methoxyl-kauran-3-one (1) and ent-17-acetoxyl-16beta-methoxyl-kauran-3-one (2), along with nine known compounds (3-12), ent-17-hydroxyl-kaur-15-en-3-one (3), ent-3beta-acetoxyl-kaur-15-en-16beta, 17-diol (4), ent-kauran-3beta, 16beta, 17-triol (5), ent-3beta-acetoxyl-kauran-16beta, 17-diol (6), ent-kauran-16beta, 17-diol (7), abbeokutone (8), ent-17alpha-acetyl-16beta-hydroxyl- kauran-3-one (9), shizukaol F (10), cycloshizukaol A (11) and curcolonol (12), were isolated from Chloranthus multistachys (Chloranthaceae). Their structures were elucidated by spectroscopic spectra.
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Affiliation(s)
- Sheng-Ping Yang
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai, PR China
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Inhibitory effects of sesquiterpene lactones isolated from Eupatorium chinense L. on IgE-mediated degranulation in rat basophilic leukemia RBL-2H3 cells and passive cutaneous anaphylaxis reaction in mice. Bioorg Med Chem 2009; 17:3189-97. [PMID: 19318257 DOI: 10.1016/j.bmc.2009.02.062] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2009] [Revised: 02/16/2009] [Accepted: 02/19/2009] [Indexed: 12/14/2022]
Abstract
Sesquiterpene lactones (SQTLs) have been shown to suppress the degranulation as inferred by histamine release in rat basophilic leukemia RBL-2H3 cells. In this study, we isolated the 9 kinds of SQTLs from Eupatorium chinense L. and examined the effects of these SQTLs on the degranulation in RBL-2H3 cells. The chemical structures of two novel compounds (SQTL-3 and 8) were determined. All the SQTLs suppressed the degranulation from Ag-stimulated RBL-2H3 cells. To disclose the inhibitory mechanism of degranulation by SQTLs, we examined the activation of intracellular signaling molecules such as Lyn, Syk, and PLCgammas and intracellular free Ca(2+) concentration ([Ca(2+)]i). None of these SQTLs showed the activation of Syk and PLCgammas. The intracellular free Ca(2+) concentration ([Ca(2+)]i) was elevated by Fc epsilonRI activation, but SQTLs treatment reduced the elevation of [Ca(2+)]i by suppressing Ca(2+) influx. Thus, it was suggested that the suppression of Ag-stimulated degranulation by these SQTLs is mainly due to the decreased Ca(2+) influx. Furthermore, in order to clarify the in vivo effect of SQTL-rich extract, we administered SQTL-rich extract to the type I allergic model mice and measured the passive cutaneous anaphylaxis (PCA) reaction induced by IgE-antigen complex. The SQTLs remarkably suppressed PCA reaction in a dose-dependent manner. Thus, it was suggested that SQTLs would be a candidate as an anti-allergic agent.
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Tori M, Morishita N, Hirota N, Saito Y, Nakashima K, Sono M, Tanaka M, Utagawa A, Hirota H. Sesquiterpenoids isolated from Eupatorium glehnii. Isolation of guaiaglehnin A, structure revision of Hiyodorilactone B, and genetic comparison. Chem Pharm Bull (Tokyo) 2008; 56:677-81. [PMID: 18451557 DOI: 10.1248/cpb.56.677] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
A new sesquiterpenoid substituted with unsaturated ester, guaiaglehnin A (1), along with 15 previously known compounds, were isolated from the methanol extract of the terrestrial part of Eupatorium glehnii (Compositae) collected in Nagano Prefecture, Japan, the results of which supported the previous study by Takahashi et al. The chemical constituents of E. glehnii collected in Nagano Prefecture and those collected in Tokushima or Hokkaido are quite different, depending on collection site, although the species are identical. The base sequences of three different samples were identical. Diversity in the chemical components was detected, though no diversity existed in the DNA sequence. In this study, eupasimplicin A (2) was also isolated, whose presence in the extract of E. chinense simplicifolium was recorded but not in an article. The side chain geometry of hiyodorilactone B (5) was revised to be E.
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Affiliation(s)
- Motoo Tori
- Faculty of Pharmaceutical Sciences, Tokushima Bunri University, Tokushima, Japan.
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Zhang ML, Wu M, Zhang JJ, Irwin D, Gu YC, Shi QW. Chemical constituents of plants from the genus Eupatorium. Chem Biodivers 2008; 5:40-55. [PMID: 18205126 DOI: 10.1002/cbdv.200890014] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Man-Li Zhang
- Department of Natural Product Chemistry, School of Pharmaceutical Sciences, Hebei Medical University, 361 Zhongshan East Road, 050017, Shijiazhuang, Hebei Province, PR China
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Chlorahololides C–F: a new class of potent and selective potassium channel blockers from Chloranthus holostegius. Tetrahedron 2008. [DOI: 10.1016/j.tet.2007.12.057] [Citation(s) in RCA: 59] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Eupalinin A isolated from Eupatorium chinense L. induces autophagocytosis in human leukemia HL60 cells. Bioorg Med Chem 2007; 16:721-31. [PMID: 17980607 DOI: 10.1016/j.bmc.2007.10.033] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2007] [Revised: 10/10/2007] [Accepted: 10/12/2007] [Indexed: 12/19/2022]
Abstract
Eupalinin A, a natural phytoalexin included in Eupatorium chinense L., exhibited a marked inhibitory effect on cell growth in HL60 cells. The morphological aspects of eupalinin A-treated cells evaluated by Hoechst 33342 nuclear staining indicated cell death, only a small part of which showed a typical apoptosis with nuclear fragmentation and condensation. To determine what type of cell death is caused by eupalinin A, we examined the contribution of caspases, Bcl-2 family proteins, MAP kinase, and PI3K/Akt, and mitochondrial membrane potential to this cell death. As a result, most part of the cell death was not associated with apoptosis because of caspase independence and no death factor released from mitochondria. Electron microscopic study indicated a characteristic finding of autophagy such as the formation of autophagosomes. Furthermore, the level of microctubule-associated-protein light chain 3 (LC3) II protein and monodancylcanaverin (MDC) incorporation were gradually increased with reduction of mitochondrial membrane potential by the accumulation of intracellular ROS after eupalinin A treatment. From these results, we can conclude that eupalinin A-induced cell death was mainly due to autophagy, which was initiated by increased ROS, resulting in the perturbation of mitochondrial membrane potential. Since the class III PI3K inhibitor such as 3-MA or LY294002 did not inhibit the eupalinin A-induced type II programmed cell death (PCD II), it was suggested that the PCD II was executed by Beclin-1 independent pathway of damage-induced mitochondrial autophagy (mitophagy).
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Xu M, Li D, Lu Y, Chen GQ. Leukemogenic AML1-ETO fusion protein increases carcinogen-DNA adduct formation with upregulated expression of cytochrome P450-1A1 gene. Exp Hematol 2007; 35:1249-55. [PMID: 17560011 DOI: 10.1016/j.exphem.2007.04.018] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2007] [Revised: 03/26/2007] [Accepted: 04/20/2007] [Indexed: 11/28/2022]
Abstract
OBJECTIVE AML1-ETO fusion protein is a product of chromosome translocation t(8;21) frequently occurred in acute myeloid leukemia (AML), but its sole expression appears to fail to cause overt leukemia in vivo. In this study, we investigated whether AML1-ETO expression impinged on action of chemical carcinogens-DNA adduct formation. MATERIALS AND METHODS AML1-ETO fusion protein was conditionally induced in engineered U937-A/E 9/14/18 cells. The formation of polycyclic aromatic hydrocarbon (PAH)-DNA adducts and the expression of PAH-metabolizing enzymes cytochrome P450 (CYP) 1A1 and arylhydrocarbon receptor (AhR) were detected by Western blot and/or quantitative RT-PCR. Luciferase reporter system was used to detect the regulation of AML1-ETO on CYP1A1 transcription. RESULTS Our results showed that AML1-ETO induction significantly increased the formation of carcinogen benzopyrene-DNA adducts in leukemic cells. In line with the effect, we also found that AML1-ETO induction upregulated CYP1A1 expression, which was dependent on AML1-binding motif in the promotor of CYP1A1 gene. Additionally, AML1-ETO protein also increased AhR expression, a ligand-activated transcription factor that mediates PAHs-induced CYP1A1 gene expression. CONCLUSION These data, combined with its inhibitory effect on DNA repair as reported previously, propose that the presence of AML1-ETO increases the susceptibility of cells to chemical carcinogens, which favors the development of additional genetic alterations.
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Affiliation(s)
- Min Xu
- Institute of Health Science, Shanghai Jiao-Tong University School of Medicine/Shanghai Institutes of Biological Sciences and School of Graduate, Chinese Academy of Sciences, Shanghai, China
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Review of the methods used for isolating pharmaceutical lead compounds from traditional medicinal plants. ACTA ACUST UNITED AC 2007. [DOI: 10.1007/s10669-007-9024-9] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Shen YC, Lo KL, Kuo YH, Khalil AT. Bioactive Sesquiterpene Lactones from Eupatorium Kiirunense. Nat Prod Commun 2006. [DOI: 10.1177/1934578x0600100703] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Four new sesquiterpene lactones, two heliangolides, one eudesmanolide and one germacranolide, were isolated by chromatographic fractionation of an acetone extract of Eupatorium kiirunense and named eupakirunsins F, G H and I (1–4). They were identified as 8β-(3-hydroxy-2-methylen-butanoyloxy)-1β,10α-epoxy-3α-hydroxy-6βH,7αH-heliang-4Z,11(13)-dien-6,12-olide (1), 8β-tigloyloxy-1β,10α-epoxy-3β,15-dihydroxy-6βH,7αH-heliang-4Z,11(13)-dien-6,12-olide (2), 8β-tigloyloxy-1 β,3β-dihydroxy-6βH,7αH-eudesman-4(15),11(13)-dien-6,12-olide (3) and 8βtigloyloxy-3βhydroxy-1β,10β-epoxy-14-oxo-6βH,7αH-germacra-4E,11(13)-dien-6,12-olide (4). The structures and the relative configurations of the new metabolites were elucidated through extensive spectral analysis and by comparison with known spectral data. Among the isolated compounds, 1 and 3 exhibited potent cytotoxicity against WiDr and MCF-7 human tumor cell lines.
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Affiliation(s)
- Ya-Ching Shen
- Institute of Marine Resources, National Sun Yat-sen University, 70 Lien-Hai Road, Kaohsiung, Taiwan 80424, Republic of China
| | - Kuang-Liang Lo
- Institute of Marine Resources, National Sun Yat-sen University, 70 Lien-Hai Road, Kaohsiung, Taiwan 80424, Republic of China
| | - Yao Haur Kuo
- National Research Institute of Chinese Medicine, Taipei, Taiwan, Republic of China
| | - Ashraf Taha Khalil
- Institute of Marine Resources, National Sun Yat-sen University, 70 Lien-Hai Road, Kaohsiung, Taiwan 80424, Republic of China
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Yang SP, Cheng JG, Huo J, Jiang HL, Chen KX, Yue JM. Seven New Sesquiterpene Lactones fromEupatorium chinense. CHINESE J CHEM 2005. [DOI: 10.1002/cjoc.200591530] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Affiliation(s)
- Braulio M Fraga
- Instituto de Productos Naturales y Agrobiología, CSIC, Avda. Astrof. F. Sánchez 3, 38206, La Laguna, Tenerife, Canary Islands, Spain.
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