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Chiang CY, Zhang M, Huang J, Zeng J, Chen C, Pan D, Yang H, Zhang T, Yang M, Han Q, Wang Z, Xiao T, Chen Y, Zou Y, Yin F, Li Z, Zhu L, Zheng D. A novel selective ERK1/2 inhibitor, Laxiflorin B, targets EGFR mutation subtypes in non-small-cell lung cancer. Acta Pharmacol Sin 2024; 45:422-435. [PMID: 37816856 PMCID: PMC10789733 DOI: 10.1038/s41401-023-01164-w] [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: 02/08/2023] [Accepted: 09/01/2023] [Indexed: 10/12/2023] Open
Abstract
Extracellular regulated protein kinases 1/2 (ERK1/2) are key members of multiple signaling pathways, including the ErbB axis. Ectopic ERK1/2 activation contributes to various types of cancer, especially drug resistance to inhibitors of RTK, RAF and MEK, and specific ERK1/2 inhibitors are scarce. In this study, we identified a potential novel covalent ERK inhibitor, Laxiflorin B, which is a herbal compound with anticancer activity. However, Laxiflorin B is present at low levels in herbs; therefore, we adopted a semi-synthetic process for the efficient production of Laxiflorin B to improve the yield. Laxiflorin B induced mitochondria-mediated apoptosis via BAD activation in non-small-cell lung cancer (NSCLC) cells, especially in EGFR mutant subtypes. Transcriptomic analysis suggested that Laxiflorin B inhibits amphiregulin (AREG) and epiregulin (EREG) expression through ERK inhibition, and suppressed the activation of their receptors, ErbBs, via a positive feedback loop. Moreover, mass spectrometry analysis combined with computer simulation revealed that Laxiflorin B binds covalently to Cys-183 in the ATP-binding pocket of ERK1 via the D-ring, and Cys-178 of ERK1 through non-inhibitory binding of the A-ring. In a NSCLC tumor xenograft model in nude mice, Laxiflorin B also exhibited strong tumor suppressive effects with low toxicity and AREG and EREG were identified as biomarkers of Laxiflorin B efficacy. Finally, Laxiflorin B-4, a C-6 analog of Laxiflorin B, exhibited higher binding affinity for ERK1/2 and stronger tumor suppression. These findings provide a new approach to tumor inhibition using natural anticancer compounds.
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Affiliation(s)
- Cheng-Yao Chiang
- Guangdong Key Laboratory of Genome Instability and Human Disease Prevention, International Cancer Center, Department of Cell Biology and Genetics, Shenzhen University Medical School; College of Life Sciences and Oceanography, Shenzhen University; Department of Pharmacy, The First Affiliated Hospital of Shenzhen University, Shenzhen Second People's Hospital (Shenzhen Institute of Translational Medicine), Shenzhen, 518055, China
| | - Min Zhang
- Guangdong Key Laboratory of Genome Instability and Human Disease Prevention, International Cancer Center, Department of Cell Biology and Genetics, Shenzhen University Medical School; College of Life Sciences and Oceanography, Shenzhen University; Department of Pharmacy, The First Affiliated Hospital of Shenzhen University, Shenzhen Second People's Hospital (Shenzhen Institute of Translational Medicine), Shenzhen, 518055, China
| | - Junrong Huang
- Guangdong Key Laboratory of Genome Instability and Human Disease Prevention, International Cancer Center, Department of Cell Biology and Genetics, Shenzhen University Medical School; College of Life Sciences and Oceanography, Shenzhen University; Department of Pharmacy, The First Affiliated Hospital of Shenzhen University, Shenzhen Second People's Hospital (Shenzhen Institute of Translational Medicine), Shenzhen, 518055, China
| | - Juan Zeng
- School of Biomedical Engineering, Guangdong Medical University, Dongguan, 523808, China
| | - Chunlan Chen
- Guangdong Key Laboratory of Genome Instability and Human Disease Prevention, International Cancer Center, Department of Cell Biology and Genetics, Shenzhen University Medical School; College of Life Sciences and Oceanography, Shenzhen University; Department of Pharmacy, The First Affiliated Hospital of Shenzhen University, Shenzhen Second People's Hospital (Shenzhen Institute of Translational Medicine), Shenzhen, 518055, China
| | - Dongmei Pan
- Guangdong Key Laboratory of Genome Instability and Human Disease Prevention, International Cancer Center, Department of Cell Biology and Genetics, Shenzhen University Medical School; College of Life Sciences and Oceanography, Shenzhen University; Department of Pharmacy, The First Affiliated Hospital of Shenzhen University, Shenzhen Second People's Hospital (Shenzhen Institute of Translational Medicine), Shenzhen, 518055, China
| | - Heng Yang
- Guangdong Key Laboratory of Genome Instability and Human Disease Prevention, International Cancer Center, Department of Cell Biology and Genetics, Shenzhen University Medical School; College of Life Sciences and Oceanography, Shenzhen University; Department of Pharmacy, The First Affiliated Hospital of Shenzhen University, Shenzhen Second People's Hospital (Shenzhen Institute of Translational Medicine), Shenzhen, 518055, China
| | - Tiantian Zhang
- Guangdong Key Laboratory of Genome Instability and Human Disease Prevention, International Cancer Center, Department of Cell Biology and Genetics, Shenzhen University Medical School; College of Life Sciences and Oceanography, Shenzhen University; Department of Pharmacy, The First Affiliated Hospital of Shenzhen University, Shenzhen Second People's Hospital (Shenzhen Institute of Translational Medicine), Shenzhen, 518055, China
| | - Min Yang
- Guangdong Key Laboratory of Genome Instability and Human Disease Prevention, International Cancer Center, Department of Cell Biology and Genetics, Shenzhen University Medical School; College of Life Sciences and Oceanography, Shenzhen University; Department of Pharmacy, The First Affiliated Hospital of Shenzhen University, Shenzhen Second People's Hospital (Shenzhen Institute of Translational Medicine), Shenzhen, 518055, China
| | - Qiangqiang Han
- SpecAlly Life Technology Co., Ltd, Wuhan, 430075, China
- Wuhan Biobank Co., Ltd, Wuhan, 430074, China
| | - Zou Wang
- Wuhan Biobank Co., Ltd, Wuhan, 430074, China
| | - Tian Xiao
- Guangdong Key Laboratory of Genome Instability and Human Disease Prevention, International Cancer Center, Department of Cell Biology and Genetics, Shenzhen University Medical School; College of Life Sciences and Oceanography, Shenzhen University; Department of Pharmacy, The First Affiliated Hospital of Shenzhen University, Shenzhen Second People's Hospital (Shenzhen Institute of Translational Medicine), Shenzhen, 518055, China
| | - Yangchao Chen
- School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Shatin, NT, Hong Kong
| | - Yongdong Zou
- Guangdong Key Laboratory of Genome Instability and Human Disease Prevention, International Cancer Center, Department of Cell Biology and Genetics, Shenzhen University Medical School; College of Life Sciences and Oceanography, Shenzhen University; Department of Pharmacy, The First Affiliated Hospital of Shenzhen University, Shenzhen Second People's Hospital (Shenzhen Institute of Translational Medicine), Shenzhen, 518055, China
| | - Feng Yin
- Laboratory of Chemical Genomics, School of Chemical Biology and Biotechnology, Peking University Shenzhen Graduate School, Shenzhen University Town, Xili, Shenzhen, 518055, China
| | - Zigang Li
- Laboratory of Chemical Genomics, School of Chemical Biology and Biotechnology, Peking University Shenzhen Graduate School, Shenzhen University Town, Xili, Shenzhen, 518055, China
| | - Lizhi Zhu
- Guangdong Key Laboratory of Genome Instability and Human Disease Prevention, International Cancer Center, Department of Cell Biology and Genetics, Shenzhen University Medical School; College of Life Sciences and Oceanography, Shenzhen University; Department of Pharmacy, The First Affiliated Hospital of Shenzhen University, Shenzhen Second People's Hospital (Shenzhen Institute of Translational Medicine), Shenzhen, 518055, China.
- Guangdong Provincial Key Laboratory of Systems Biology and Synthetic Biology for Urogenital Tumors, Shenzhen, 518035, China.
| | - Duo Zheng
- Guangdong Key Laboratory of Genome Instability and Human Disease Prevention, International Cancer Center, Department of Cell Biology and Genetics, Shenzhen University Medical School; College of Life Sciences and Oceanography, Shenzhen University; Department of Pharmacy, The First Affiliated Hospital of Shenzhen University, Shenzhen Second People's Hospital (Shenzhen Institute of Translational Medicine), Shenzhen, 518055, China.
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Yang H, Zhang T, Chen C, Chiang C, Chen K, Wu Y, Liu Z, Zhou Y, Zhu L, Zheng D. Laxiflorin B covalently binds the tubulin colchicine-binding site to inhibit triple negative breast cancer proliferation and induce apoptosis. Chem Biol Interact 2023; 383:110681. [PMID: 37648048 DOI: 10.1016/j.cbi.2023.110681] [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: 07/22/2023] [Accepted: 08/26/2023] [Indexed: 09/01/2023]
Abstract
Laxiflorin B is a natural ent-kaurane diterpenoid that can be isolated from the leaves of the Isodon eriocalyx var. laxiflora, a perennial shrub native to parts of China. While this compound has potent cytotoxic activity against various tumor cells, the anti-tumor targets and molecular mechanisms of Laxiflorin B are unclear. Here, we show that Laxiflorin B exhibits strong antiproliferative and proapoptotic effects on triple-negative breast cancer (TNBC) cells. At the mechanistic level, we show that β-tubulin (TUBB) is a cellular target of Laxiflorin B. By covalently binding the Cys239 and C354 residues of the TUBB colchicine-binding site, Laxiflorin B disturbs microtubule integrity and structure in vitro and in vivo. Cytotoxicity analyses also showed that the α, β-unsaturated carbonyl in the D ring of Laxiflorin B is responsible for mediating its covalent binding and anti-tumor activity. To assess the therapeutic effects of Laxiflorin B, we synthesized a Laxiflorin B-ALA pro-drug and delivered it by intraperitoneal injection (10 mg/kg) into a 4T1 orthotopic tumor mouse model. Drug treatment had anti-tumor effects without inducing notable weight loss or organ dysfunction. We conclude that Laxiflorin B is a promising colchicine binding site inhibitor that might be exploited in the context of TNBC treatment in the future.
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Affiliation(s)
- Heng Yang
- Guangdong Provincial Key Laboratory of Genome Stability and Disease Prevention, International Cancer Center, Department of Cell Biology and Genetics, School of Basic Medical Sciences; School of Pharmacy; Department of Pharmacy, The First Affiliated Hospital of Shenzhen University, Shenzhen Second People's Hospital (Shenzhen Institute of Translational Medicine); Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging, National-Regional Key Technology Engineering Laboratory for Medical Ultrasound, School of Biomedical Engineering, Shenzhen University Medical School, Shenzhen 518060, China
| | - Tiantian Zhang
- Guangdong Provincial Key Laboratory of Genome Stability and Disease Prevention, International Cancer Center, Department of Cell Biology and Genetics, School of Basic Medical Sciences; School of Pharmacy; Department of Pharmacy, The First Affiliated Hospital of Shenzhen University, Shenzhen Second People's Hospital (Shenzhen Institute of Translational Medicine); Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging, National-Regional Key Technology Engineering Laboratory for Medical Ultrasound, School of Biomedical Engineering, Shenzhen University Medical School, Shenzhen 518060, China
| | - Chunlan Chen
- Guangdong Provincial Key Laboratory of Genome Stability and Disease Prevention, International Cancer Center, Department of Cell Biology and Genetics, School of Basic Medical Sciences; School of Pharmacy; Department of Pharmacy, The First Affiliated Hospital of Shenzhen University, Shenzhen Second People's Hospital (Shenzhen Institute of Translational Medicine); Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging, National-Regional Key Technology Engineering Laboratory for Medical Ultrasound, School of Biomedical Engineering, Shenzhen University Medical School, Shenzhen 518060, China
| | - Chengyao Chiang
- Southern University of Science and Technology, Yantian Hospital, Shenzhen, China
| | - Kai Chen
- School of Materials Science and Engineering, Central South University of Forestry and Technology, Changsha, 410004, China
| | - Yan Wu
- Guangdong Provincial Key Laboratory of Genome Stability and Disease Prevention, International Cancer Center, Department of Cell Biology and Genetics, School of Basic Medical Sciences; School of Pharmacy; Department of Pharmacy, The First Affiliated Hospital of Shenzhen University, Shenzhen Second People's Hospital (Shenzhen Institute of Translational Medicine); Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging, National-Regional Key Technology Engineering Laboratory for Medical Ultrasound, School of Biomedical Engineering, Shenzhen University Medical School, Shenzhen 518060, China
| | - Zhengxin Liu
- Guangdong Provincial Key Laboratory of Genome Stability and Disease Prevention, International Cancer Center, Department of Cell Biology and Genetics, School of Basic Medical Sciences; School of Pharmacy; Department of Pharmacy, The First Affiliated Hospital of Shenzhen University, Shenzhen Second People's Hospital (Shenzhen Institute of Translational Medicine); Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging, National-Regional Key Technology Engineering Laboratory for Medical Ultrasound, School of Biomedical Engineering, Shenzhen University Medical School, Shenzhen 518060, China
| | - Yajun Zhou
- Guangdong Provincial Key Laboratory of Genome Stability and Disease Prevention, International Cancer Center, Department of Cell Biology and Genetics, School of Basic Medical Sciences; School of Pharmacy; Department of Pharmacy, The First Affiliated Hospital of Shenzhen University, Shenzhen Second People's Hospital (Shenzhen Institute of Translational Medicine); Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging, National-Regional Key Technology Engineering Laboratory for Medical Ultrasound, School of Biomedical Engineering, Shenzhen University Medical School, Shenzhen 518060, China
| | - Lizhi Zhu
- Guangdong Provincial Key Laboratory of Genome Stability and Disease Prevention, International Cancer Center, Department of Cell Biology and Genetics, School of Basic Medical Sciences; School of Pharmacy; Department of Pharmacy, The First Affiliated Hospital of Shenzhen University, Shenzhen Second People's Hospital (Shenzhen Institute of Translational Medicine); Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging, National-Regional Key Technology Engineering Laboratory for Medical Ultrasound, School of Biomedical Engineering, Shenzhen University Medical School, Shenzhen 518060, China.
| | - Duo Zheng
- Guangdong Provincial Key Laboratory of Genome Stability and Disease Prevention, International Cancer Center, Department of Cell Biology and Genetics, School of Basic Medical Sciences; School of Pharmacy; Department of Pharmacy, The First Affiliated Hospital of Shenzhen University, Shenzhen Second People's Hospital (Shenzhen Institute of Translational Medicine); Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging, National-Regional Key Technology Engineering Laboratory for Medical Ultrasound, School of Biomedical Engineering, Shenzhen University Medical School, Shenzhen 518060, China.
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Chacón-Morales PA. Unprecedented diterpene skeletons isolated from vascular plants in the last twenty years (2001-2021). PHYTOCHEMISTRY 2022; 204:113425. [PMID: 36096268 DOI: 10.1016/j.phytochem.2022.113425] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/22/2022] [Revised: 08/30/2022] [Accepted: 09/01/2022] [Indexed: 06/15/2023]
Abstract
Every year there are hundreds of reports about the isolation of undescribed terpenoids based on novel functionalizations of known carbocyclic skeletons series. However, on some occasions the compounds obtained have a carbocyclic skeleton that does not correspond with the series established, in these peculiar opportunities, in addition to finding an undescribed natural product, is obtained an unprecedented carbocyclic skeleton, whose biogenesis must necessarily involve other additional steps that explain its formation. This review accounts for the reports of seventy-nine unprecedented diterpene skeletons (corresponding to one-hundred-three undescribed diterpenoids) isolated from vascular plants in the last two decades. According to the genus, Euphorbia and Salvia are the most prolific in reports of unprecedented diterpene skeletons with a total of twenty, and nine skeletons, respectively. If the findings are expressed in terms of the family, Euphorbiaceae and Lamiaceae have the highest number of reports of undescribed diterpene skeletons, with twenty-seven and twenty-two, respectively. Finally, fifty-three skeletons are derived from higher diterpenoids (2-12, 68, 69, 86, 104-109, 158-161, 186, 189, 222, 250-255, 285-298, 403-404, 415, 416, and 436), twenty are derived from lower diterpenoids (135, 136, 192-194, 225-229, 363-370, 397, and 425), and six (96, 97, 147, 148, 205, and 206) are derived from skeletons whose biogenesis has not yet been established, or at least, cannot be formally included within the groups mentioned above. This article comprehensively highlights the hypothetical biosynthetic pathway for each of the one-hundred-three undescribed compounds with unprecedented diterpene skeletons and summarizes their most significant biological activities.
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Affiliation(s)
- Pablo A Chacón-Morales
- Natural Products Laboratory, Department of Chemistry, Faculty of Science, University of Los Andes, Mérida, 5101, Venezuela.
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4
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Liu JP, Xiao YZ, Hu Y, Li XN, Wu MJ, Zhao Y, Zhao Y, Ma ZJ, Shen J. Synthesis and antitumor evaluation of neolaxiflorin B inspired compounds. DRUG DESIGN DEVELOPMENT AND THERAPY 2019; 13:3021-3028. [PMID: 31692523 PMCID: PMC6712212 DOI: 10.2147/dddt.s202345] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/15/2019] [Accepted: 07/09/2019] [Indexed: 11/23/2022]
Abstract
Background Neolaxiflorin B is derived from ent-kaurane like laxiflorin J and eriocalyxin B with a relatively low potency as an antitumor agent. During preliminary structure-activity relationship studies, the α,β-unsaturated ketone (enone) system is an important active group. Methods Seven neolaxiflorin B derivatives containing α,β-unsaturated ketone moieties were synthesized. In vitro, activity was evaluated against three human tumor cell lines and a rat myogenic cell line (HepG2, NSCLC-H292, SNU-1040, and L6, respectively) by MTT assay. Results Compound 15 appeared a promising antitumor lead due to its cytotoxic potency and relatively high selectivity, with an SI value of 13.14. Flow cytometry analysis was conducted to show that NSCLC-H292 cells were blocked in the G0/G1 phase in the presence of compound 15, thus inhibiting the proliferation of tumor cells. Conclusion This study has revealed that compound 15 is a promising antitumor lead due to the cytotoxic potencies and the high selectivity it displayed when compared to natural counterparts.
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Affiliation(s)
- Jing-Ping Liu
- Department of Chemistry, Yunnan Normal University, Kunming 650092, People's Republic of China
| | - Ye-Zhi Xiao
- Department of Chemistry, Yunnan Normal University, Kunming 650092, People's Republic of China
| | - Yu Hu
- Department of Chemistry, Yunnan Normal University, Kunming 650092, People's Republic of China
| | - Xiao-Nian Li
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Kunming 650201, People's Republic of China
| | - Ming-Jiang Wu
- Criminal Science and Technology Key Lab of Yunnan Police College, Kunming 650223, People's Republic of China
| | - Yong Zhao
- Department of Chemistry, Yunnan Normal University, Kunming 650092, People's Republic of China
| | - Yan Zhao
- Department of Chemistry, Yunnan Normal University, Kunming 650092, People's Republic of China
| | - Ze-Jin Ma
- Department of Chemistry, Yunnan Normal University, Kunming 650092, People's Republic of China
| | - Jing Shen
- Department of Chemistry, Yunnan Normal University, Kunming 650092, People's Republic of China
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Yang Q, Hu K, Yan BC, Liu M, Li XN, Sun HD, Puno PT. Maoeriocalysins A–D, four novelent-kaurane diterpenoids fromIsodon eriocalyxand their structure determination utilizing quantum chemical calculation in conjunction with quantitative interproton distance analysis. Org Chem Front 2019. [DOI: 10.1039/c8qo01007b] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Maoeriocalysin A, an unprecedented 4,5-seco-3,5-cyclo-7,20-epoxy-ent-kauranoid, together with three rare 9,10-seco-ent-kauranoids, maoeriocalysins B–D, were isolated.
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Affiliation(s)
- Qian Yang
- State Key Laboratory of Phytochemistry and Plant Resources in West China
- Kunming Institute of Botany
- Chinese Academy of Sciences
- Kunming 650201
- People's Republic of China
| | - Kun Hu
- State Key Laboratory of Phytochemistry and Plant Resources in West China
- Kunming Institute of Botany
- Chinese Academy of Sciences
- Kunming 650201
- People's Republic of China
| | - Bing-Chao Yan
- State Key Laboratory of Phytochemistry and Plant Resources in West China
- Kunming Institute of Botany
- Chinese Academy of Sciences
- Kunming 650201
- People's Republic of China
| | - Miao Liu
- State Key Laboratory of Phytochemistry and Plant Resources in West China
- Kunming Institute of Botany
- Chinese Academy of Sciences
- Kunming 650201
- People's Republic of China
| | - Xiao-Nian Li
- State Key Laboratory of Phytochemistry and Plant Resources in West China
- Kunming Institute of Botany
- Chinese Academy of Sciences
- Kunming 650201
- People's Republic of China
| | - Han-Dong Sun
- State Key Laboratory of Phytochemistry and Plant Resources in West China
- Kunming Institute of Botany
- Chinese Academy of Sciences
- Kunming 650201
- People's Republic of China
| | - Pema-Tenzin Puno
- State Key Laboratory of Phytochemistry and Plant Resources in West China
- Kunming Institute of Botany
- Chinese Academy of Sciences
- Kunming 650201
- People's Republic of China
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Puno PT. Harvest, After 50 Years of Sowing. NATURAL PRODUCTS AND BIOPROSPECTING 2018; 8:207-215. [PMID: 30027529 PMCID: PMC6102177 DOI: 10.1007/s13659-018-0182-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/04/2018] [Accepted: 07/09/2018] [Indexed: 06/08/2023]
Affiliation(s)
- Pema-Tenzin Puno
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, People's Republic of China.
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Hu ZX, Xu HC, Hu K, Liu M, Li XN, Li XR, Du X, Zhang YH, Puno PT, Sun HD. Structurally diverse diterpenoids from Isodon pharicus. Org Chem Front 2018. [DOI: 10.1039/c8qo00477c] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Twenty-one structurally diverse diterpenoids (1–21), wherein 1, 2, and 4 represented unprecedented architectures, were isolated from Isodon pharicus.
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8
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Abstract
Covering: December 2005 to June 2016. Previous review: Nat. Prod. Rep., 2006, 23, 673-698Over the last decade, great efforts have been made to conduct phytochemistry research on the genus Isodon, which have led to the isolation and identification of a number of diterpenoids. At the same time, these newly reported diterpenoids with diverse structures have led to new findings on their biological functions and chemical synthesis research. In this update, we review more than 600 new diterpenoids, including their structures, classifications, biogenetic pathways, bioactivities, and chemical synthesis.
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Affiliation(s)
- Miao Liu
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, Yunnan, P. R. China.
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Jiang HY, Wang WG, Tang JW, Liu M, Li XR, Hu K, Du X, Li XN, Zhang HB, Pu JX, Sun HD. Structurally Diverse Diterpenoids from Isodon scoparius and Their Bioactivity. JOURNAL OF NATURAL PRODUCTS 2017; 80:2026-2036. [PMID: 28654256 DOI: 10.1021/acs.jnatprod.7b00163] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Fourteen new diterpenoids (1-14) based on four skeletal types and two known analogues (15 and 16) were isolated from the aerial parts of Isodon scoparius. Compound 2 is the first ent-kaurane diterpenoid featuring a 1,11-ether bridge, and the structures of these new compounds were established mainly by NMR and MS methods. The absolute configurations of 1 and 5 and the relative configuration of 3 were determined using single-crystal X-ray diffraction. The absolute configuration of 14 was determined by comparison of the experimental and calculated electronic circular dichroism spectra. Compounds 1, 4, and 15 were active against five human tumor cell lines (HL-60, SMMC-7721, A-549, MCF-7, and SW-480), and they also inhibited NO production in LPS-stimulated RAW264.7 cells, with IC50 values of 1.0, 3.1, and 1.8 μM, respectively.
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MESH Headings
- Antineoplastic Agents, Phytogenic/chemistry
- Antineoplastic Agents, Phytogenic/isolation & purification
- Antineoplastic Agents, Phytogenic/pharmacology
- Crystallography, X-Ray
- Diterpenes, Kaurane/chemistry
- Diterpenes, Kaurane/isolation & purification
- Diterpenes, Kaurane/pharmacology
- Drug Screening Assays, Antitumor
- Drugs, Chinese Herbal/chemistry
- Drugs, Chinese Herbal/isolation & purification
- Drugs, Chinese Herbal/pharmacology
- HL-60 Cells
- Humans
- Isodon/chemistry
- Lipopolysaccharides/pharmacology
- Macrophages/drug effects
- Molecular Structure
- Nitric Oxide/biosynthesis
- Nuclear Magnetic Resonance, Biomolecular
- Plant Components, Aerial/chemistry
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Affiliation(s)
- Hua-Yi Jiang
- State Key Laboratory of Phytochemistry and Plant Resources in West China, and Yunnan Key Laboratory of Natural Medicinal Chemistry, Kunming Institute of Botany, Chinese Academy of Sciences , Kunming 650201, People's Republic of China
- University of Chinese Academy of Sciences , Beijing 100049, People's Republic of China
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, School of Chemical Science and Technology, Yunnan University , Kunming 650091, People's Republic of China
| | - Wei-Guang Wang
- State Key Laboratory of Phytochemistry and Plant Resources in West China, and Yunnan Key Laboratory of Natural Medicinal Chemistry, Kunming Institute of Botany, Chinese Academy of Sciences , Kunming 650201, People's Republic of China
| | - Jian-Wei Tang
- State Key Laboratory of Phytochemistry and Plant Resources in West China, and Yunnan Key Laboratory of Natural Medicinal Chemistry, Kunming Institute of Botany, Chinese Academy of Sciences , Kunming 650201, People's Republic of China
| | - Miao Liu
- State Key Laboratory of Phytochemistry and Plant Resources in West China, and Yunnan Key Laboratory of Natural Medicinal Chemistry, Kunming Institute of Botany, Chinese Academy of Sciences , Kunming 650201, People's Republic of China
| | - Xing-Ren Li
- State Key Laboratory of Phytochemistry and Plant Resources in West China, and Yunnan Key Laboratory of Natural Medicinal Chemistry, Kunming Institute of Botany, Chinese Academy of Sciences , Kunming 650201, People's Republic of China
| | - Kun Hu
- State Key Laboratory of Phytochemistry and Plant Resources in West China, and Yunnan Key Laboratory of Natural Medicinal Chemistry, Kunming Institute of Botany, Chinese Academy of Sciences , Kunming 650201, People's Republic of China
| | - Xue Du
- State Key Laboratory of Phytochemistry and Plant Resources in West China, and Yunnan Key Laboratory of Natural Medicinal Chemistry, Kunming Institute of Botany, Chinese Academy of Sciences , Kunming 650201, People's Republic of China
| | - Xiao-Nian Li
- State Key Laboratory of Phytochemistry and Plant Resources in West China, and Yunnan Key Laboratory of Natural Medicinal Chemistry, Kunming Institute of Botany, Chinese Academy of Sciences , Kunming 650201, People's Republic of China
| | - Hong-Bin Zhang
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, School of Chemical Science and Technology, Yunnan University , Kunming 650091, People's Republic of China
| | - Jian-Xin Pu
- State Key Laboratory of Phytochemistry and Plant Resources in West China, and Yunnan Key Laboratory of Natural Medicinal Chemistry, Kunming Institute of Botany, Chinese Academy of Sciences , Kunming 650201, People's Republic of China
| | - Han-Dong Sun
- State Key Laboratory of Phytochemistry and Plant Resources in West China, and Yunnan Key Laboratory of Natural Medicinal Chemistry, Kunming Institute of Botany, Chinese Academy of Sciences , Kunming 650201, People's Republic of China
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10
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Niu CS, Li Y, Liu YB, Ma SG, Liu F, Li L, Xu S, Wang XJ, Wang RB, Qu J, Yu SS. Pierisketolide A and Pierisketones B and C, Three Diterpenes with an Unusual Carbon Skeleton from the Roots of Pieris formosa. Org Lett 2017; 19:906-909. [DOI: 10.1021/acs.orglett.7b00048] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Chang-Shan Niu
- State Key Laboratory of Bioactive
Substance and Function of Natural Medicines, Institute of Materia
Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China
| | - Yong Li
- State Key Laboratory of Bioactive
Substance and Function of Natural Medicines, Institute of Materia
Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China
| | - Yun-Bao Liu
- State Key Laboratory of Bioactive
Substance and Function of Natural Medicines, Institute of Materia
Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China
| | - Shuang-Gang Ma
- State Key Laboratory of Bioactive
Substance and Function of Natural Medicines, Institute of Materia
Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China
| | - Fei Liu
- State Key Laboratory of Bioactive
Substance and Function of Natural Medicines, Institute of Materia
Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China
| | - Li Li
- State Key Laboratory of Bioactive
Substance and Function of Natural Medicines, Institute of Materia
Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China
| | - Song Xu
- State Key Laboratory of Bioactive
Substance and Function of Natural Medicines, Institute of Materia
Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China
| | - Xiao-Jing Wang
- State Key Laboratory of Bioactive
Substance and Function of Natural Medicines, Institute of Materia
Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China
| | - Ru-Bing Wang
- State Key Laboratory of Bioactive
Substance and Function of Natural Medicines, Institute of Materia
Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China
| | - Jing Qu
- State Key Laboratory of Bioactive
Substance and Function of Natural Medicines, Institute of Materia
Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China
| | - Shi-Shan Yu
- State Key Laboratory of Bioactive
Substance and Function of Natural Medicines, Institute of Materia
Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China
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12
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Wan J, Liu M, Jiang HY, Yang J, Du X, Li XN, Wang WG, Li Y, Pu JX, Sun HD. Bioactive ent-kaurane diterpenoids from Isodon serra. PHYTOCHEMISTRY 2016; 130:244-251. [PMID: 27298277 DOI: 10.1016/j.phytochem.2016.05.014] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/24/2015] [Revised: 05/25/2016] [Accepted: 05/31/2016] [Indexed: 06/06/2023]
Abstract
Nine 7,20-epoxy-ent-kaurane diterpenoids (15-acetylmegathyrin B, serrin E, 14β-hydroxyrabdocoestin A, serrin F, serrin G, 11-epi-rabdocoestin A, serrin H, serrin I, and 15-acetylenanderianin N), along with seven known ones, were isolated from the aerial parts of Isodon serra. Their structures were elucidated by extensive spectroscopic analysis, and the absolute configuration of 15-acetylmegathyrin B was determined by signal-crystal X-ray diffraction. All of these compounds were evaluated for their cytotoxic activities against five human tumor cell lines (HL-60, SMMC-7721, A-549, MCF-7, SW480). Serrin F, rabdocoestin B and 1α,11β-dihydroxy-1α,11β-acetonide-7α,20-epoxy-ent-kaur-16-en-15-one showed cytotoxic activities against all cell lines, with IC50 values ranging from 0.7 to 4.6 μM; serrin F also strongly inhibited NO production in LPS-stimulated RAW264.7 cells. Otherwise, 14β-hydroxyrabdocoestin A, serrins H and I, as well as enanderianin N and megathyrin B, also exhibited inhibitory effects towards NO production, while no cytotoxicity against five cell lines was detected.
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Affiliation(s)
- Jun Wan
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, PR China; University of Chinese Academy of Sciences, Beijing 10039, PR China
| | - Miao Liu
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, PR China; University of Chinese Academy of Sciences, Beijing 10039, PR China
| | - Hua-Yi Jiang
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, PR China; University of Chinese Academy of Sciences, Beijing 10039, PR China
| | - Jin Yang
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, PR China; University of Chinese Academy of Sciences, Beijing 10039, PR China
| | - Xue Du
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, PR China
| | - Xiao-Nian Li
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, PR China
| | - Wei-Guang Wang
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, PR China
| | - Yan Li
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, PR China
| | - Jian-Xin Pu
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, PR China.
| | - Han-Dong Sun
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, PR China
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13
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Li D, Han T, Liao J, Hu X, Xu S, Tian K, Gu X, Cheng K, Li Z, Hua H, Xu J. Oridonin, a Promising ent-Kaurane Diterpenoid Lead Compound. Int J Mol Sci 2016; 17:E1395. [PMID: 27563888 PMCID: PMC5037675 DOI: 10.3390/ijms17091395] [Citation(s) in RCA: 50] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2016] [Revised: 08/15/2016] [Accepted: 08/18/2016] [Indexed: 12/16/2022] Open
Abstract
Oridonin belongs to ent-kaurane tetracyclic diterpenoid and was first isolated from Isodon species. It exhibits inhibitory activities against a variety of tumor cells, and pharmacological study shows that oridonin could inhibit cell proliferation, DNA, RNA and protein synthesis of cancer cells, induce apoptosis and exhibit an antimutagenic effect. In addition, the large amount of the commercially-available supply is also very important for the natural lead oridonin. Moreover, the good stability, suitable molecular weight and drug-like property guarantee its further generation of a natural-like compound library. Oridonin has become the hot molecule in recent years, and from the year 2010, more than 200 publications can be found. In this review, we summarize the synthetic medicinal chemistry work of oridonin from the first publication 40 years ago and share our research experience of oridonin for about 10 years, which may provide useful information to those who are interested in this research field.
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Affiliation(s)
- Dahong Li
- Key Laboratory of Structure-Based Drug Design & Discovery, Ministry of Education, and School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang 110016, China.
| | - Tong Han
- Key Laboratory of Structure-Based Drug Design & Discovery, Ministry of Education, and School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang 110016, China.
| | - Jie Liao
- Key Laboratory of Structure-Based Drug Design & Discovery, Ministry of Education, and School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang 110016, China.
| | - Xu Hu
- Key Laboratory of Structure-Based Drug Design & Discovery, Ministry of Education, and School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang 110016, China.
| | - Shengtao Xu
- Department of Medicinal Chemistry and State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing 210009, China.
| | - Kangtao Tian
- Key Laboratory of Structure-Based Drug Design & Discovery, Ministry of Education, and School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang 110016, China.
| | - Xiaoke Gu
- Jiangsu Key Laboratory of New Drug Research and Clinical Pharmacy, Xuzhou Medical College, Xuzhou 221004, China.
| | - Keguang Cheng
- State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources, and School of Chemistry and Pharmacy, Guangxi Normal University, Guilin 541004, China.
| | - Zhanlin Li
- Key Laboratory of Structure-Based Drug Design & Discovery, Ministry of Education, and School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang 110016, China.
| | - Huiming Hua
- Key Laboratory of Structure-Based Drug Design & Discovery, Ministry of Education, and School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang 110016, China.
| | - Jinyi Xu
- Department of Medicinal Chemistry and State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing 210009, China.
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14
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Ding G, Fei J, Wang J, Xie Y, Li R, Gong N, Lv Y, Yu C, Zou Z. Fimbriatols A-J, Highly Oxidized ent-Kaurane Diterpenoids from Traditional Chinese Plant Flickingeria fimbriata (B1.) Hawkes. Sci Rep 2016; 6:30560. [PMID: 27484744 PMCID: PMC4971462 DOI: 10.1038/srep30560] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2016] [Accepted: 07/01/2016] [Indexed: 12/30/2022] Open
Abstract
Fimbriatols A–J (1–10), ten new ent-kaurane diterpenoids possessing differently highly oxidized sites, were isolated from Flickingeria fimbriata (B1.) Hawkes. The structures of these new compounds were determined by HRESI-MS, NMR, CD spectra and X-ray diffraction analysis. Compound 1 displayed moderately inhibitory ratio (48.5%) compared with the positive compound NSC-87877 (81.6%) at the concentration of 0.022 μg/mL. Compounds 7–10 possess 3, 4-seco-ent-kaurane skeleton containing a disaccharide moiety with an unusual linkage at C-2′ to C-1′′ instead of the common linkage at C-6′ to C-1′′, and this is the first report in 600 more ent-kauranes found in nature, which might be originated from ent-kaurane diterpenoids through post-modified reactions of Baeyer-Villiger oxygenation and glycosylation.
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Affiliation(s)
- Gang Ding
- Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine, Ministry of Education, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100193, P. R. China
| | - Jiaodong Fei
- Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine, Ministry of Education, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100193, P. R. China.,Beijing University of Chemical Technology, Beijing 100029, People's Republic of China
| | - Jing Wang
- Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine, Ministry of Education, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100193, P. R. China.,Beijing University of Chemical Technology, Beijing 100029, People's Republic of China
| | - Yong Xie
- Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine, Ministry of Education, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100193, P. R. China
| | - Rongtao Li
- Hainan Branch of Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100193, People's Republic of China
| | - Ningbo Gong
- Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, People's Republic of China
| | - Yang Lv
- Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, People's Republic of China
| | - Changyuan Yu
- Beijing University of Chemical Technology, Beijing 100029, People's Republic of China
| | - Zhongmei Zou
- Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine, Ministry of Education, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100193, P. R. China
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15
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ent-Kauranoids isolated from Isodon eriocalyx var. laxiflora and their structure activity relationship analyses. Tetrahedron 2015. [DOI: 10.1016/j.tet.2015.09.066] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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16
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Cheng HB, Bo Y, Shen WX, Ren XG, Tan JN, Jia ZR, Xu CL. Longikaurin E induces apoptosis of pancreatic cancer cells via modulation of the p38 and PI3K/AKT pathways by ROS. Naunyn Schmiedebergs Arch Pharmacol 2015; 388:623-34. [PMID: 25743573 DOI: 10.1007/s00210-015-1107-4] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2014] [Accepted: 02/16/2015] [Indexed: 12/22/2022]
Abstract
Pancreatic cancer is a devastating disease with a poor prognosis. It ranks as the fourth or fifth most common cancer in men and women and has the lowest 5-year survival rate. Therefore, there is an urgent need to develop novel therapeutic agents for pancreatic cancer. Longikaurin E (LE), which is derived from the traditional herbal medicine Rabdosia longituba, had been reported to have anti-proliferative and pro-apoptotic properties in several types of cancers. In this study, we investigated the cytotoxic properties of LE against pancreatic cancer cells and explored the mechanism behind the observed apoptosis. Pancreatic cancer cell lines cultured in the presence of LE exhibited dose- and time-dependent growth suppression by clone formation, methylthiazoltetrazolium assay, lactate dehydrogenase cytotoxicity assay, and fluorescence-activated cell sorting analysis, respectively. In addition, these culture conditions also induced the generation of cellular reactive oxygen species (ROS). In order to determine the mechanisms underlying LE-induced cytotoxicity, we used reverse transcription polymerase chain reaction and Western blot analysis in the pancreatic cancer cell line PANC1. The results showed that the expression of Bax was noticeably upregulated and the expression levels of Bcl-2, Bcl-XL, survivin, and c-Myc were significantly downregulated. We also observed increased p38 phosphorylation and decreased phosphorylation of the PI3K/AKT pathway. Interestingly, we also found that LE activated caspase-3. However, N-acetyl-L-cysteine, a kind of antioxidant, reversed all of these cellular activities. In conclusion, this study suggested that LE induced apoptosis of pancreatic cancer cells via ROS generation to modulate the p38 and PI3K/AKT pathways and could be a promising anti-pancreatic agent.
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Affiliation(s)
- Hai-bo Cheng
- Translational Medicine Research Center, Nanjing University of Chinese Medicine, No. 138, Xianlin Road, Nanjing, Jiangsu, People's Republic of China
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17
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Wang WG, Tang JW, Shi YM, Du X, Li XN, Wu HY, Jiang HY, Li Y, Pu JX, Sun HD. Laxiflorol A, the first example of 7,8:15,16-di-seco-15-nor-21-homo-ent-kauranoid from Isodon eriocalyx var. laxiflora. RSC Adv 2015. [DOI: 10.1039/c4ra12704h] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Laxiflorol A (1), an unprecedented 7,8:15,16-di-seco-15-nor-21-homo-ent-kauranoid, and its precursor analogue, laxiflorol B (2), were isolated from the leaves of Isodon eriocalyx var. laxiflora.
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18
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Wang WG, Yan BC, Li XN, Du X, Wu HY, Zhan R, Li Y, Pu JX, Sun HD. 6,7-Seco-ent-kaurane-type diterpenoids from Isodon eriocalyx var. laxiflora. Tetrahedron 2014. [DOI: 10.1016/j.tet.2014.08.018] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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19
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Wei P, Yan X, Huang F. Reversible formation of a poly[3]rotaxane based on photo dimerization of an anthracene-capped [3]rotaxane. Chem Commun (Camb) 2014; 50:14105-8. [DOI: 10.1039/c4cc07044e] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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20
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Lazarski KE, Moritz BJ, Thomson RJ. The Total Synthesis ofIsodonDiterpenes. Angew Chem Int Ed Engl 2014; 53:10588-99. [DOI: 10.1002/anie.201404482] [Citation(s) in RCA: 70] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2014] [Indexed: 11/10/2022]
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21
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22
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Liao YJ, Bai HY, Li ZH, Zou J, Chen JW, Zheng F, Zhang JX, Mai SJ, Zeng MS, Sun HD, Pu JX, Xie D. Longikaurin A, a natural ent-kaurane, induces G2/M phase arrest via downregulation of Skp2 and apoptosis induction through ROS/JNK/c-Jun pathway in hepatocellular carcinoma cells. Cell Death Dis 2014; 5:e1137. [PMID: 24651440 PMCID: PMC3973226 DOI: 10.1038/cddis.2014.66] [Citation(s) in RCA: 63] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2013] [Revised: 01/15/2014] [Accepted: 01/27/2014] [Indexed: 12/26/2022]
Abstract
Hepatocellular carcinoma (HCC) is the most common form of primary liver cancer, and is also highly resistant to conventional chemotherapy treatments. In this study, we report that Longikaurin A (LK-A), an ent-kaurane diterpenoid isolated from the plant Isodon ternifolius, induced cell cycle arrest and apoptosis in human HCC cell lines. LK-A also suppressed tumor growth in SMMC-7721 xenograft models, without inducing any notable major organ-related toxicity. LK-A treatment led to reduced expression of the proto-oncogene S phase kinase-associated protein 2 (Skp2) in SMMC-7721 cells. Lower Skp2 levels correlated with increased expression of p21 and p-cdc2 (Try15), and a corresponding decrease in protein levels of Cyclin B1 and cdc2. Overexpression of Skp2 significantly inhibited LK-A-induced cell cycle arrest in SMMC-7721 cells, suggesting that LK-A may target Skp2 to arrest cells at the G2/M phase. LK-A also induced reactive oxygen species (ROS) production and apoptosis in SMMC-7721 cells. LK-A induced phosphorylation of c-Jun N-terminal kinase (JNK), but not extracellular signal-regulated kinase and P38 MAP kinase. Treatment with, the JNK inhibitor SP600125 prevented LK-A-induced apoptosis in SMMC-7721 cells. Moreover, the antioxidant N-acetylcysteine prevented phosphorylation of both JNK and c-Jun. Taken together, these data indicate that LK-A induces cell cycle arrest and apoptosis in cancer cells by dampening Skp2 expression, and thereby activating the ROS/JNK/c-Jun signaling pathways. LK-A is therefore a potential lead compound for development of antitumor drugs targeting HCC.
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Affiliation(s)
- Y-J Liao
- Sun Yat-Sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, China
| | - H-Y Bai
- 1] Sun Yat-Sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, China [2] Department of Forensic Medicine, Zhongshan School of Medicine, Sun Yat-Sen University, Guangzhou, China
| | - Z-H Li
- Department of Forensic Medicine, Zhongshan School of Medicine, Sun Yat-Sen University, Guangzhou, China
| | - J Zou
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, China
| | - J-W Chen
- Sun Yat-Sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, China
| | - F Zheng
- Medical Research Center, Sun Yat-Sen Memorial Hospital, Guangzhou, China
| | - J-X Zhang
- Sun Yat-Sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, China
| | - S-J Mai
- Sun Yat-Sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, China
| | - M-S Zeng
- Sun Yat-Sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, China
| | - H-D Sun
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, China
| | - J-X Pu
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, China
| | - D Xie
- Sun Yat-Sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, China
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Jiang HY, Wang WG, Zhou M, Wu HY, Zhan R, Li XN, Du X, Li Y, Pu JX, Sun HD. Diterpenoids from Isodon sculponeatus. Fitoterapia 2014; 93:142-9. [DOI: 10.1016/j.fitote.2013.12.025] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2013] [Revised: 12/28/2013] [Accepted: 12/31/2013] [Indexed: 01/11/2023]
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24
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Jiang HY, Wang WG, Zhou M, Wu HY, Zhan R, Li XN, Du X, Li Y, Pu JX, Sun HD. Enmein-type 6,7-seco-ent-kauranoids from Isodon sculponeatus. JOURNAL OF NATURAL PRODUCTS 2013; 76:2113-2119. [PMID: 24219809 DOI: 10.1021/np400669t] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Fourteen enmein-type 6,7-seco-ent-kaurane diterpenoids, seven new ones (sculponins M-S, 1-7) and seven known compounds (8-14), were isolated from the aerial parts of Isodon sculponeatus . Compound 1 is the first example of an ent-kauranoid, possessing a 11,12-epoxy group, and compounds 6 and 7 have a rare 3,6-epoxy group. The structures were established primarily by NMR and MS methods, and the absolute configurations of 1, 3, and 6 were determined by single-crystal X-ray diffraction. Compound 14 showed significant cytotoxic activity against five human tumor lines, with IC50 values ranging from 1.0 to 3.5 μM, and it also inhibited NO production in LPS-stimulated RAW264.7 cells, with an IC50 value of 2.2 μM.
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Affiliation(s)
- Hua-Yi Jiang
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences , Kunming 650201, People's Republic of China
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25
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Wang WG, Du X, Li XN, Yan BC, Zhou M, Wu HY, Zhan R, Dong K, Pu JX, Sun HD. Four new diterpenoids from Isodon eriocalyx var. laxiflora. NATURAL PRODUCTS AND BIOPROSPECTING 2013; 3:145-149. [PMCID: PMC4131582 DOI: 10.1007/s13659-013-0057-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/18/2013] [Accepted: 08/02/2013] [Indexed: 06/04/2023]
Abstract
Four new diterpenoids, laxiflorins S-V (1–4), bearing four different types, and one known compound, laxiflorin O (5), were isolated from Isodon eriocalyx var. laxiflora. Compound 1 was the first example of ent-kauranoids bearing a unique C24 carbon framework and compound 4 was the first example of 3,4-seco-ent-abietane diterpenoids from the Isodon genus. Their structures were determined by spectroscopic methods (UV, IR, MS, NMR). ![]()
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Affiliation(s)
- Wei-Guang Wang
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201 China
- University of Chinese Academy of Sciences, Beijing, 100049 China
| | - Xue Du
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201 China
| | - Xiao-Nian Li
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201 China
| | - Bing-Chao Yan
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201 China
- University of Chinese Academy of Sciences, Beijing, 100049 China
| | - Min Zhou
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201 China
- University of Chinese Academy of Sciences, Beijing, 100049 China
| | - Hai-Yan Wu
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201 China
- University of Chinese Academy of Sciences, Beijing, 100049 China
| | - Rui Zhan
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201 China
- University of Chinese Academy of Sciences, Beijing, 100049 China
| | - Ke Dong
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201 China
| | - Jian-Xin Pu
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201 China
| | - Han-Dong Sun
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201 China
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26
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Li YP, Li XN, Gao LH, Li HZ, Wu GX, Li RT. Neopierisoids A and B, two new chlorinated 3,4-seco-grayanane diterpenoids with antifeedant activity from flowers of Pieris japonica. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2013; 61:7219-7224. [PMID: 23822836 DOI: 10.1021/jf401921x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Two new chlorinated multiacylated 3,4-seco-grayanane diterpenoids, neopierisoids A and B (1 and 2), were isolated from flowers of the poisonous plant Pieris japonica and were identified from spectroscopic analysis and X-ray diffraction data. Both compounds showed obvious antifeedant activity against Pieris brassicae with an EC50 of 10.07 μg/cm(2) for 1 and 5.33 μg/cm(2) for 2, indications of toxic properties. Chlorinated 3,4-seco-grayanane diterpenoids in P. japonica may play a defensive role against herbivores.
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Affiliation(s)
- Yan-Ping Li
- The Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming 650050, P R China
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27
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28
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Zhou M, Geng HC, Zhang HB, Dong K, Wang WG, Du X, Li XN, He F, Qin HB, Li Y, Pu JX, Sun HD. Scopariusins, A New Class of ent-Halimane Diterpenoids Isolated from Isodon scoparius, and Biomimetic Synthesis of Scopariusin A and Isoscoparin N. Org Lett 2012; 15:314-7. [PMID: 23265286 DOI: 10.1021/ol303226c] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Min Zhou
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, Yunnan, P. R. China, and University of Chinese Academy of Sciences, Beijing 100039, P. R. China
| | - Hui-Chun Geng
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, Yunnan, P. R. China, and University of Chinese Academy of Sciences, Beijing 100039, P. R. China
| | - Hai-Bo Zhang
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, Yunnan, P. R. China, and University of Chinese Academy of Sciences, Beijing 100039, P. R. China
| | - Ke Dong
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, Yunnan, P. R. China, and University of Chinese Academy of Sciences, Beijing 100039, P. R. China
| | - Wei-Guang Wang
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, Yunnan, P. R. China, and University of Chinese Academy of Sciences, Beijing 100039, P. R. China
| | - Xue Du
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, Yunnan, P. R. China, and University of Chinese Academy of Sciences, Beijing 100039, P. R. China
| | - Xiao-Nian Li
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, Yunnan, P. R. China, and University of Chinese Academy of Sciences, Beijing 100039, P. R. China
| | - Fei He
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, Yunnan, P. R. China, and University of Chinese Academy of Sciences, Beijing 100039, P. R. China
| | - Hong-Bo Qin
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, Yunnan, P. R. China, and University of Chinese Academy of Sciences, Beijing 100039, P. R. China
| | - Yan Li
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, Yunnan, P. R. China, and University of Chinese Academy of Sciences, Beijing 100039, P. R. China
| | - Jian-Xin Pu
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, Yunnan, P. R. China, and University of Chinese Academy of Sciences, Beijing 100039, P. R. China
| | - Han-Dong Sun
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, Yunnan, P. R. China, and University of Chinese Academy of Sciences, Beijing 100039, P. R. China
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Wang WG, Li XN, Du X, Wu HY, Liu X, Su J, Li Y, Pu JX, Sun HD. Laxiflorolides A and B, epimeric bishomoditerpene lactones from Isodon eriocalyx. JOURNAL OF NATURAL PRODUCTS 2012; 75:1102-1107. [PMID: 22624550 DOI: 10.1021/np300106j] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Laxiflorolides A (1) and B (2), two unprecedented epimeric bishomoditerpene lactones with a unique C(22) framework, along with laxiflorins P-R (3-5), maoecrystal P (6), maoecrystal C (7), and eriocalyxin B (8), were isolated from the leaves of I. eriocalyx var. laxiflora. The structures of 1 and 2, including the absolute configurations, were determined by spectroscopic methods and single-crystal X-ray diffraction analysis. All of the compounds isolated were evaluated for their cytotoxicity against five tumor cell lines. Compounds 3, 6, and 8 showed remarkable cytotoxic activity against certain cell lines compared with the positive control.
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Affiliation(s)
- Wei-Guang Wang
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, People's Republic of China
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Zou J, Du X, Pang G, Shi YM, Wang WG, Zhan R, Kong LM, Li XN, Li Y, Pu JX, Sun HD. Ternifolide A, a New Diterpenoid Possessing a Rare Macrolide Motif from Isodon ternifolius. Org Lett 2012; 14:3210-3. [PMID: 22651671 DOI: 10.1021/ol3013205] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Juan Zou
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, Yunnan, P. R. China, Graduate University of the Chinese Academy of Sciences, Beijing 100049, P. R. China, and Guangxi Jinxiu Shengtang Yaoye Limited Company, Liuzhou 545700, Guangxi, P. R. China
| | - Xue Du
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, Yunnan, P. R. China, Graduate University of the Chinese Academy of Sciences, Beijing 100049, P. R. China, and Guangxi Jinxiu Shengtang Yaoye Limited Company, Liuzhou 545700, Guangxi, P. R. China
| | - Guo Pang
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, Yunnan, P. R. China, Graduate University of the Chinese Academy of Sciences, Beijing 100049, P. R. China, and Guangxi Jinxiu Shengtang Yaoye Limited Company, Liuzhou 545700, Guangxi, P. R. China
| | - Yi-Ming Shi
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, Yunnan, P. R. China, Graduate University of the Chinese Academy of Sciences, Beijing 100049, P. R. China, and Guangxi Jinxiu Shengtang Yaoye Limited Company, Liuzhou 545700, Guangxi, P. R. China
| | - Wei-Guang Wang
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, Yunnan, P. R. China, Graduate University of the Chinese Academy of Sciences, Beijing 100049, P. R. China, and Guangxi Jinxiu Shengtang Yaoye Limited Company, Liuzhou 545700, Guangxi, P. R. China
| | - Rui Zhan
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, Yunnan, P. R. China, Graduate University of the Chinese Academy of Sciences, Beijing 100049, P. R. China, and Guangxi Jinxiu Shengtang Yaoye Limited Company, Liuzhou 545700, Guangxi, P. R. China
| | - Ling-Mei Kong
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, Yunnan, P. R. China, Graduate University of the Chinese Academy of Sciences, Beijing 100049, P. R. China, and Guangxi Jinxiu Shengtang Yaoye Limited Company, Liuzhou 545700, Guangxi, P. R. China
| | - Xiao-Nian Li
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, Yunnan, P. R. China, Graduate University of the Chinese Academy of Sciences, Beijing 100049, P. R. China, and Guangxi Jinxiu Shengtang Yaoye Limited Company, Liuzhou 545700, Guangxi, P. R. China
| | - Yan Li
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, Yunnan, P. R. China, Graduate University of the Chinese Academy of Sciences, Beijing 100049, P. R. China, and Guangxi Jinxiu Shengtang Yaoye Limited Company, Liuzhou 545700, Guangxi, P. R. China
| | - Jian-Xin Pu
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, Yunnan, P. R. China, Graduate University of the Chinese Academy of Sciences, Beijing 100049, P. R. China, and Guangxi Jinxiu Shengtang Yaoye Limited Company, Liuzhou 545700, Guangxi, P. R. China
| | - Han-Dong Sun
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, Yunnan, P. R. China, Graduate University of the Chinese Academy of Sciences, Beijing 100049, P. R. China, and Guangxi Jinxiu Shengtang Yaoye Limited Company, Liuzhou 545700, Guangxi, P. R. China
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Wang WG, Li XN, Du X, Dong K, Zhao W, Wu HY, Kong LM, Li Y, Pu JX, Sun HD. Biogenetically related caged ent-kaurane diterpenoids from Isodon eriocalyx var. laxiflora. Tetrahedron Lett 2012. [DOI: 10.1016/j.tetlet.2012.03.112] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Wang W, Wu H, Du X, Yan J, Li Y, Pu J, Sun H. ent-Kaurane Diterpenoids from Isodon eriocalyx var. laxiflora. CHINESE J CHEM 2012. [DOI: 10.1002/cjoc.201100653] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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