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Garcia DA, Pressete CG, Miranda R, Salem PPO, Nicácio KJ, Costa LPDM, Murgu M, Lago JHG, Dias DF, Soares MG, Ionta M, Chagas-Paula DA. Biological and metabolomics-guided isolation of tetrahydrofurofuran lignan from Croton spp. with antiproliferative activity against human melanoma cell line. Fitoterapia 2024; 177:106070. [PMID: 38897254 DOI: 10.1016/j.fitote.2024.106070] [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: 12/19/2023] [Revised: 06/13/2024] [Accepted: 06/16/2024] [Indexed: 06/21/2024]
Abstract
The Croton genus (Euphorbiaceae) is recognized as a promising source for identifying bioactive compounds with antiproliferative activity. However, knowledge on the chemical composition and activity of Croton floribundus, Croton echinocarpus, and Croton zehntneri is limited. Thus, this study aimed to investigate the antiproliferative activity of these species on cells derived from tumoral breast, lung, and melanoma cells, and primary fibroblasts derived from human skin. Metabolomic strategies were applied via ultra-performance liquid chromatography coupled with high-resolution mass spectrometry and multivariate statistical analysis to target the main active compound. The C. floribundus leaf extract exhibited the highest activity, with an IC50 value lower than that of the reference drug - temozolomide - in the most responsive cell line - SK-MEL-147 - and in all the evaluated melanoma cell lines (SK-MEL-147, CHL-1 and WM-1366). Four tetrahydrofurofuran lignans were isolated for the first time from the most promising fraction of the C. floribundus extract. According to the metabolomic and multivariate statistical analyses, the isolated lignan epi-yangambin constituted the main antiproliferative compound against SK-MEL-147; furthermore, it exhibited selective antiproliferative activity for this cell line (IC50 = 13.09 μg/mL and selectivity index = 3.82; temozolomide, IC50 = 121.50 μg/mL) due to, at least in part, its ability to inhibit cell cycle progression at G2/M. This is especially relevant considering the high resistance of melanoma cells to available drugs. Thus, epi-yangambin can serve as a prototype for further antiproliferative investigations.
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Affiliation(s)
- Daniela A Garcia
- Laboratory of Phytochemistry, Medicinal Chemistry, and Metabolomics. Chemistry Institute, Federal University of Alfenas (UNIFAL-MG), Alfenas, MG 37130-001, Brazil; Laboratory for the Evaluation of Antitumor Prototypes, Institute of Biomedical Sciences, Federal University of Alfenas (UNIFAL-MG), Alfenas, MG 37130-001, Brazil
| | - Carolina G Pressete
- Laboratory for the Evaluation of Antitumor Prototypes, Institute of Biomedical Sciences, Federal University of Alfenas (UNIFAL-MG), Alfenas, MG 37130-001, Brazil
| | - Rafael Miranda
- Laboratory for the Evaluation of Antitumor Prototypes, Institute of Biomedical Sciences, Federal University of Alfenas (UNIFAL-MG), Alfenas, MG 37130-001, Brazil
| | - Paula P O Salem
- Laboratory of Phytochemistry, Medicinal Chemistry, and Metabolomics. Chemistry Institute, Federal University of Alfenas (UNIFAL-MG), Alfenas, MG 37130-001, Brazil
| | - Karen J Nicácio
- Laboratory of Phytochemistry, Medicinal Chemistry, and Metabolomics. Chemistry Institute, Federal University of Alfenas (UNIFAL-MG), Alfenas, MG 37130-001, Brazil; Department of Chemistry, Federal University of Mato Grosso (UFMT), Cuiabá, MT 78060-900, Brazil
| | - Lara P D M Costa
- Laboratory of Phytochemistry, Medicinal Chemistry, and Metabolomics. Chemistry Institute, Federal University of Alfenas (UNIFAL-MG), Alfenas, MG 37130-001, Brazil
| | | | - João H G Lago
- Center of Human and Natural Sciences, Federal University of ABC, Santo André, SP 09210-580, Brazil
| | - Danielle F Dias
- Laboratory of Phytochemistry, Medicinal Chemistry, and Metabolomics. Chemistry Institute, Federal University of Alfenas (UNIFAL-MG), Alfenas, MG 37130-001, Brazil
| | - Marisi G Soares
- Laboratory of Phytochemistry, Medicinal Chemistry, and Metabolomics. Chemistry Institute, Federal University of Alfenas (UNIFAL-MG), Alfenas, MG 37130-001, Brazil
| | - Marisa Ionta
- Laboratory for the Evaluation of Antitumor Prototypes, Institute of Biomedical Sciences, Federal University of Alfenas (UNIFAL-MG), Alfenas, MG 37130-001, Brazil
| | - Daniela A Chagas-Paula
- Laboratory of Phytochemistry, Medicinal Chemistry, and Metabolomics. Chemistry Institute, Federal University of Alfenas (UNIFAL-MG), Alfenas, MG 37130-001, Brazil.
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Yang J, Zhao J, Zhang J. The efficacy and toxicity of grayanoids as analgesics: A systematic review. JOURNAL OF ETHNOPHARMACOLOGY 2022; 298:115581. [PMID: 35948141 DOI: 10.1016/j.jep.2022.115581] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/13/2022] [Revised: 07/08/2022] [Accepted: 07/24/2022] [Indexed: 06/15/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Grayanoids are natural diterpenoids that are mostly found in the Ericaceae family, such as Rhododendron molle (Blume) G. Don (Relevant herb: nao yang hua), Rhododendron micranthum Turcz (also known as: zhao shan bai), which have traditionally been used to treat abdominal pain, cephalgia, and rheumatoid arthritis. AIMS OF THE REVIEW The review investigated advancements in notable anti-nociception, toxicity, and probable mechanisms of grayanoids. Meanwhile some binding sites of these compounds on voltage-gated sodium channels (VSGCs) were also analyzed and evaluated. MATERIALS AND METHODS The substantial grayanoids literature published before 2022, in SCI Finder, PubMed, Science Direct, Springer, Scopus, Wiley Online Library, J-Stage, and other literature databases had been exhaustively consulted and thoroughly screened. RESULTS More than 50 compounds in grayanoids exhibited exceptionally significant anti-nociception (intraperitoneal injection, less than 1 mg/kg), and the alteration of several substituents that were closely associated to the change in activity were investigated. Multiple possible mechanisms of analgesic action and toxicity had been proposed, with VSGCs playing a key part in both. As a result, the binding locations of these compounds on VGSCs (mostly grayanotoxin I and III) had been summarized. CONCLUSIONS The considerable anti-nociception, toxicity, and probable mechanisms of grayanoids, as well as the investigation of the binding sites on VSGCs, were discussed in this review. Furthermore, the homology of toxicity and anti-nociception of these substances was considered, as well as the possibility of grayanoids being developed as analgesics.
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Affiliation(s)
- Jian Yang
- Engineering Research Center of Modern Preparation Technology of TCM of Ministry of Education, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, China.
| | - Jingyi Zhao
- Engineering Research Center of Modern Preparation Technology of TCM of Ministry of Education, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, China.
| | - Jiquan Zhang
- Engineering Research Center of Modern Preparation Technology of TCM of Ministry of Education, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, China.
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Chemical Constituents from Croton Species and Their Biological Activities. Molecules 2018; 23:molecules23092333. [PMID: 30213129 PMCID: PMC6225158 DOI: 10.3390/molecules23092333] [Citation(s) in RCA: 49] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2018] [Revised: 09/07/2018] [Accepted: 09/10/2018] [Indexed: 12/12/2022] Open
Abstract
The genus Croton belongs to the Euphorbiaceae family, which comprises approximately 1300 species. Many Croton species have been used as folk medicines. This review focuses on the chemical constituents from Croton species and their relevant biological activities, covering the period from 2006 to 2018. A total of 399 new compounds, including 339 diterpenoids, were reported. Diterpenoids are characteristic components of the Croton species. These isolated compounds exhibited a broad spectrum of bioactivities, including cytotoxic, anti-inflammatory, antifungal, acetylcholinesterase inhibitory, and neurite outgrowth-promoting properties. The present review provides a significant clue for further research of the chemical constituents from the Croton species as potential medicines.
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Lee JS, Lee MS, Cha EY, Thuong PT, Sul JY, Park JB, Ko YB. A natural ent‑kaurane diterpenoid induces antiproliferation in ovarian cancer cells via ERK1/2 regulation and inhibition of cellular migration and invasion. Mol Med Rep 2018; 18:3898-3906. [PMID: 30106144 PMCID: PMC6131655 DOI: 10.3892/mmr.2018.9377] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2018] [Accepted: 08/02/2018] [Indexed: 01/11/2023] Open
Abstract
Ovarian cancer is one of the most common causes of female mortalities from gynecological tumors. An ent‑kaurane diterpenoid compound CRT1 (ent‑18‑acetoxy‑7β‑hydroxy kaur‑15‑oxo‑16‑ene), mainly isolated from the Vietnamese herb Croton tonkinesis has been used in folk medicine in Vietnam for cancer treatment. However, the effect of this compound on human ovarian cancer cells has not yet been reported. The objective of the present study was to determine the effect of CRT1 on the cell viability, apoptosis and metastasis of SKOV3 human ovarian cancer cells using a Cell Counting Kit‑8 assay, flow cytometric analysis of Annexin V‑fluorescein isothiocyanate/propidium iodide staining, western blot analysis, soft agar colony forming assay, wound healing assay and Matrigel invasion assay. The results revealed that CRT1 possessed significant anti‑proliferative effects on SKOV3 cells. CRT1 treatment at 25 and 50 µM induced apoptosis, enhanced the percentage of Annexin V‑positive cells, increased the expression of pro‑apoptotic protein B‑cell lymphoma 2 (Bcl‑2)‑associated X protein, cytochrome c release from the mitochondria to the cytosol, cleaved caspase‑3, caspase‑7, caspase‑9, and poly (adenosine diphosphate‑ribose) polymerase. However, it decreased the expression of Bcl‑2 in a dose‑dependent manner. The percentage of necrotic cells increased following CRT1 treatment at <10 µM. CRT1 at 50 µM significantly induced the phosphorylation of extracellular signal‑regulated kinase (ERK). Growth inhibition and the apoptotic effects of CRT1 could be reversed by PD98059, an ERK inhibitor. Additionally, CRT1 inhibited cell migration and invasion via ERK1/2 activation in SKOV3 cells. These results indicated that CRT1, an ent‑kaurane diterpenoid, may be a potential inhibitor of ovarian cancer by the activating ERK1/2/p90 ribosomal S6 kinase signaling pathway.
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Affiliation(s)
- Jin Sun Lee
- Department of Surgery and Research Institute for Medicinal Sciences, Chungnam National University College of Medicine, Daejeon 35015, Republic of Korea
| | - Myung Sun Lee
- Surgical Oncology Research Lab, Chungnam National University Hospital, Daejeon 35015, Republic of Korea
| | - Eun Young Cha
- Surgical Oncology Research Lab, Chungnam National University Hospital, Daejeon 35015, Republic of Korea
| | - Phuong Thien Thuong
- Department of Herbal Analysis and Standardization, National Institute of Medicinal Materials, Hanoi 100000, Vietnam
| | - Ji Young Sul
- Department of Surgery and Research Institute for Medicinal Sciences, Chungnam National University College of Medicine, Daejeon 35015, Republic of Korea
| | - Jun Beom Park
- Department of Surgery and Research Institute for Medicinal Sciences, Chungnam National University College of Medicine, Daejeon 35015, Republic of Korea
| | - Young Bok Ko
- Department of Obstetrics and Gynecology and Research Institute for Medicinal Sciences, Chungnam National University College of Medicine, Daejeon 35015, Republic of Korea
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Giang PM, Otsuka H. New Compounds and Potential Candidates for Drug Discovery from Medicinal Plants of Vietnam. Chem Pharm Bull (Tokyo) 2018; 66:493-505. [PMID: 29710046 DOI: 10.1248/cpb.c17-00628] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The study of natural products introduces interesting new bioorganic structures and potential candidates for the drug discovery stage in the development of innovative drugs. Vietnam enjoys a broad biodiversity of native plant species, microorganisms, marine organisms, and a long tradition of using herbal remedies. Thus, the study of medicinal plants in determining the basis of their efficacy and safety is an important task for modern researchers in Vietnam. The present review covers literature on new compounds elucidated from the systematic study of medicinal plants within some popular genera in Vietnam, as well as their significant biological activities.
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Affiliation(s)
- Phan Minh Giang
- Faculty of Chemistry, VNU University of Science, Vietnam National University
| | - Hideaki Otsuka
- Faculty of Pharmacy, Division of Natural Product Chemistry, Yasuda Women's University
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Zhou J, Liu T, Zhang H, Zheng G, Qiu Y, Deng M, Zhang C, Yao G. Anti-inflammatory Grayanane Diterpenoids from the Leaves of Rhododendron molle. JOURNAL OF NATURAL PRODUCTS 2018; 81:151-161. [PMID: 29272126 DOI: 10.1021/acs.jnatprod.7b00799] [Citation(s) in RCA: 51] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Thirteen new grayanane diterpenoids (1-13), a new dimeric grayanane diterpenoid, bimollfoliagein A (14), and 15 known analogues (15-29) were isolated from the leaves of Rhododendron molle. The structures of the new compounds (1-14) were determined by extensive spectroscopic data interpretation. The absolute configurations of 1-3, 7, 8, 16, 18, and 24 were defined by single-crystal X-ray diffraction analysis. Mollfoliagein A (1) represents the first example of a 2,3:11,16-diepoxy grayanane diterpenoid, featuring a cis/trans/cis/cis/trans-fused 3/5/7/6/5/5 hexacyclic ring system with a 7,13-dioxahexacyclo[10.3.3.01,11.04,9.06,8.014,17]octadecane scaffold. Diterpenoids 1-29 were evaluated for their anti-inflammatory activities in vitro, and 15, 16, 18, 19, 23-26, 28, and 29 exhibited significant inhibitory activities against nitric oxide production in lipopolysaccharide-induced RAW264.7 mouse macrophages with IC50 values ranging from 2.8 to 35.4 μM. A preliminary structure-activity relationship for the anti-inflammatory activity of diterpenoids 1-29 is discussed.
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Affiliation(s)
- Junfei Zhou
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, and ‡Department of Nephrology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology , Wuhan 430030, People's Republic of China
| | - Tingting Liu
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, and ‡Department of Nephrology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology , Wuhan 430030, People's Republic of China
| | - Hanqi Zhang
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, and ‡Department of Nephrology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology , Wuhan 430030, People's Republic of China
| | - Guijuan Zheng
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, and ‡Department of Nephrology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology , Wuhan 430030, People's Republic of China
| | - Yue Qiu
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, and ‡Department of Nephrology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology , Wuhan 430030, People's Republic of China
| | - Mengyi Deng
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, and ‡Department of Nephrology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology , Wuhan 430030, People's Republic of China
| | - Chun Zhang
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, and ‡Department of Nephrology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology , Wuhan 430030, People's Republic of China
| | - Guangmin Yao
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, and ‡Department of Nephrology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology , Wuhan 430030, People's Republic of China
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da Silva ADS, de Melo E Silva K, Neto JC, Costa VCDO, Pessôa HDLF, Tavares JF, da Silva MS, Cavalcante FDA. Croton grewioides Baill. (Euphorbiaceae) Shows Antidiarrheal Activity in Mice. Pharmacognosy Res 2016; 8:202-5. [PMID: 27365990 PMCID: PMC4908850 DOI: 10.4103/0974-8490.181465] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
Based on chemotaxonomy, we decided to investigate the possible antidiarrheal activity in mice of a crude ethanolic extract obtained from aerial parts of Croton grewioides (CG-EtOH). We tested for any possible toxicity in rat erythrocytes and acute toxicity in mice. Antidiarrheal activity was assessed by determining the effect of CG-EtOH on defecation frequency, liquid stool, intestinal motility and intestinal fluid accumulation. CG-EtOH showed no in vitro cytotoxicity and was not orally lethal. In contrast, the extract given intraperitoneally (at 2000 mg/kg) was lethal, but only in females. CG-EtOH produced a significant and equipotent antidiarrheal activity, both in defecation frequency (ED50 = 106.0 ± 8.1 mg/kg) and liquid stools (ED50 = 105.0 ± 9.2 mg/kg). However, CG-EtOH (125 mg/kg) decreased intestinal motility by only 22.7% ± 4.4%. Moreover, extract markedly inhibited the castor oil-induced intestinal contents (ED50 = 34.6 ± 5.4 mg/kg). We thus conclude that CG-EtOH is not orally lethal and contains active principles with antidiarrheal activity, and this effect seems to involve mostly changes in intestinal secretion.
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Affiliation(s)
- Anne Dayse Soares da Silva
- Postgraduate Program in Natural Products and Synthetic Bioactive, Federal University of Paraíba, João Pessoa 58051-900, PB, Brazil
| | - Karoline de Melo E Silva
- Institute of Biological Sciences and Health, Federal University of Alagoas, Maceió 57020-720, AL, Brazil
| | - José Clementino Neto
- Institute of Biological Sciences and Health, Federal University of Alagoas, Maceió 57020-720, AL, Brazil
| | | | - Hilzeth de Luna F Pessôa
- Department of Molecular Biology, Federal University of Paraíba, João Pessoa 58051-900, PB, Brazil
| | - Josean Fechine Tavares
- Postgraduate Program in Natural Products and Synthetic Bioactive, Federal University of Paraíba, João Pessoa 58051-900, PB, Brazil; Department of Pharmaceutical Sciences, Federal University of Paraíba, João Pessoa 58051-900, PB, Brazil
| | - Marcelo Sobral da Silva
- Postgraduate Program in Natural Products and Synthetic Bioactive, Federal University of Paraíba, João Pessoa 58051-900, PB, Brazil; Department of Pharmaceutical Sciences, Federal University of Paraíba, João Pessoa 58051-900, PB, Brazil
| | - Fabiana de Andrade Cavalcante
- Postgraduate Program in Natural Products and Synthetic Bioactive, Federal University of Paraíba, João Pessoa 58051-900, PB, Brazil; Department of Physiology and Pathology, Federal University of Paraíba, João Pessoa 58051-900, PB, Brazil
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Jang WS, Jyoti MA, Kim S, Nam KW, Ha TKQ, Oh WK, Song HY. In vitro antituberculosis activity of diterpenoids from the Vietnamese medicinal plant Croton tonkinensis. J Nat Med 2015; 70:127-32. [PMID: 26386972 DOI: 10.1007/s11418-015-0937-1] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2015] [Accepted: 08/31/2015] [Indexed: 12/22/2022]
Abstract
Diterpenoids from the Vietnamese medicinal plant Croton tonkinensis are rich in ent-kaurane, kaurane and the grayanane class and are valuable intermediate plant metabolites with different bioactivities. In this study, we report the antituberculosis activity of these diterpenoids against both susceptible and resistant strains of M. tuberculosis for the first time. All of the ent-kaurane, kaurane and grayanane diterpenoids showed high to moderate activity against Mycobacterium. The highest antituberculosis activity was observed for ent-1β,7α,14β-triacetoxykaur-16-en-15-one (cpp604), with MIC values of 0.78, 1.56 and 3.12-12.5 µg/ml against H37Ra, H37Rv and all other resistant strains of Mycobacterium tuberculosis examined. In addition, other ent-kaurane-type diterpenoids also showed very high activities against mycobacterium, including cpp609 (1.56 µg/ml), cpp610 (1.56 µg/ml), cpp601 (3.12-6.25 µg/ml), cpp602 (3.12-6.25 µg/ml), cpp607 (3.12-6.25 µg/ml) and cpp608 (3.12-6.25 µg/ml). From the structure-activity relationship, functional groups R3 and R5 of the ent-kaurane skeleton were found to modulate the antimycobacterial activity.
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Affiliation(s)
- Woong Sik Jang
- Regional Innovation Center, Soonchunhyang University, Asan, South Korea
| | - Md Anirban Jyoti
- Department of Microbiology and Immunology, School of Medicine, Soonchunhyang University, Cheonan, Chungnam, 330-090, South Korea
| | - Sukyung Kim
- Department of Microbiology and Immunology, School of Medicine, Soonchunhyang University, Cheonan, Chungnam, 330-090, South Korea
| | - Kung-Woo Nam
- Department of Life Science and Biotechnology, Soonchunhyang University, Asan, South Korea
| | - Thi Kim Quy Ha
- Korea Bioactive Natural Material Bank, Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul, South Korea
| | - Won Keun Oh
- Korea Bioactive Natural Material Bank, Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul, South Korea
| | - Ho-Yeon Song
- Department of Microbiology and Immunology, School of Medicine, Soonchunhyang University, Cheonan, Chungnam, 330-090, South Korea. .,Regional Innovation Center, Soonchunhyang University, Asan, South Korea.
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Im NK, Zhou W, Na M, Jeong GS. RETRACTED: Pierisformoside B exhibits neuroprotective and anti-inflammatory effects in murine hippocampal and microglial cells via the HO-1/Nrf2-mediated pathway. Int Immunopharmacol 2015; 24:353-360. [DOI: 10.1016/j.intimp.2014.12.014] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2014] [Revised: 12/08/2014] [Accepted: 12/09/2014] [Indexed: 01/19/2023]
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Zou W, Vembaiyan K. Synthesis of 7-Oxabicyclo[2.2.1]heptanes and 8-Oxabicyclo[3.2.1]octanes from C-Glycosides via an Intramolecular Cyclization. J Org Chem 2013; 78:2703-9. [DOI: 10.1021/jo3024973] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Wei Zou
- Institute for Biological Sciences, National Research Council of Canada, Ottawa, Ontario K1A 0R6,
Canada
| | - Kannan Vembaiyan
- Institute for Biological Sciences, National Research Council of Canada, Ottawa, Ontario K1A 0R6,
Canada
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Kuo PC, Yang ML, Hwang TL, Lai YY, Li YC, Thang TD, Wu TS. Anti-inflammatory diterpenoids from Croton tonkinensis. JOURNAL OF NATURAL PRODUCTS 2013; 76:230-236. [PMID: 23347584 DOI: 10.1021/np300699f] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Phytochemical investigation of the methanolic extract of Croton tonkinensis afforded two known kauranes (1, 2), eight new ent-kauranes (3-10), and 16 known ent-kaurane-type diterpenoids (12-27). In addition, 30 known compounds were identified by comparison of their physical and spectroscopic data with reported data. Among the isolated compounds, ent-18-acetoxykaur-16-en-15-one (20) displayed the most significant inhibition of superoxide anion generation and elastase release.
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Affiliation(s)
- Ping-Chung Kuo
- Department of Biotechnology, National Formosa University, Yunlin 632, Taiwan, Republic of China
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Woerdenbag HJ, Nguyen TM, Vu DV, Tran H, Nguyen DT, Tran TV, De Smet PAGM, Brouwers JRBJ. Vietnamese traditional medicine from a pharmacist's perspective. Expert Rev Clin Pharmacol 2013; 5:459-77. [PMID: 22943125 DOI: 10.1586/ecp.12.34] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Traditional medicine plays an important role in the healthcare system of Vietnam. Vietnamese traditional medicine (VTM) is underpinned by the oriental philosophy and theory of healing. VTM is largely influenced by traditional Chinese medicine, but differs to a certain extent. VTM is largely not evidence-based from a clinical perspective but subclinical research data from the past decades support the traditional use of many herbal VTM drugs. For safe use, knowledge of the occurrence of adverse reactions and herb-drug interactions is necessary. The Vietnamese government supports further development of VTM in a scientific way and integration of VTM with Western medicine. This article first gives an overview of the general aspects of VTM (historical perspective, regulatory aspects, comparison with traditional Chinese medicine, philosophical background, the Vietnamese market situation, quality assurance and formulations), and subsequently focuses on its safe and effective use in Vietnamese clinical pharmacy and medical practice.
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Affiliation(s)
- Herman J Woerdenbag
- Department of Pharmaceutical Technology and Biopharmacy, University of Groningen, Groningen, The Netherlands.
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Sul YH, Lee MS, Cha EY, Thuong PT, Khoi NM, Song IS. An ent-Kaurane Diterpenoid from Croton tonkinensis Induces Apoptosis by Regulating AMP-Activated Protein Kinase in SK-HEP1 Human Hepatocellular Carcinoma Cells. Biol Pharm Bull 2013; 36:158-64. [DOI: 10.1248/bpb.b12-00873] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Young Hoon Sul
- Surgical Oncology Research Lab., Chungnam National University Hospital
- Department of Surgery, Chungnam National University College of Medicine & Hospital
| | - Myung Sun Lee
- Surgical Oncology Research Lab., Chungnam National University Hospital
| | - Eun Young Cha
- Surgical Oncology Research Lab., Chungnam National University Hospital
| | | | | | - In Sang Song
- Department of Surgery, Chungnam National University College of Medicine & Hospital
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Thuong PT, Pham THM, Le TVT, Dao TT, Dang TT, Nguyen QT, Oh WK. Symmetric dimers of ent-kaurane diterpenoids with cytotoxic activity from Croton tonkinensis. Bioorg Med Chem Lett 2012; 22:1122-4. [DOI: 10.1016/j.bmcl.2011.11.116] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2011] [Revised: 11/17/2011] [Accepted: 11/28/2011] [Indexed: 11/15/2022]
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16
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Dao TT, Lee KY, Jeong HM, Nguyen PH, Tran TL, Thuong PT, Nguyen BT, Oh WK. ent-Kaurane diterpenoids from Croton tonkinensis stimulate osteoblast differentiation. JOURNAL OF NATURAL PRODUCTS 2011; 74:2526-2531. [PMID: 22085418 DOI: 10.1021/np200667f] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Four new ent-kaurane diterpenoids (1-4) were isolated from the leaves of Croton tonkinensis by bioactivity-guided fractionation using an in vitro osteoblast differentiation assay. Their structures were identified as ent-11β-acetoxykaur-16-en-18-ol (1), ent-11α-hydroxy-18-acetoxykaur-16-ene (2), ent-14β-hydroxy-18-acetoxykaur-16-ene (3), and ent-7α-hydroxy-18-acetoxykaur-16-ene (4). Compounds 1-4 significantly increased alkaline phosphatase activity and osteoblastic gene promoter activity. Compounds 1-3 also increased the levels of ALP and collagen type I alpha mRNA in C2C12 cells in a dose-dependent manner. These results suggest that ent-kaurane diterpenoids from C. tonkinensis have a direct stimulatory effect on osteoblast differentiation and may be potential therapeutic molecules against bone diseases such as osteoporosis.
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Affiliation(s)
- Trong-Tuan Dao
- BK21 Project Team, College of Pharmacy, Chosun University, 375 Seosuk-dong, Dong-gu, Gwangju 501-759, Republic of Korea
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Shimada N, Hanari T, Kurosaki Y, Takeda K, Anada M, Nambu H, Shiro M, Hashimoto S. Catalytic Asymmetric Synthesis of the endo-6-Aryl-8-oxabicyclo[3.2.1]oct-3-en-2-one Natural Product from Ligusticum chuanxing via 1,3-Dipolar Cycloaddition of a Formyl-Derived Carbonyl Ylide Using Rh2(S-TCPTTL)4. J Org Chem 2010; 75:6039-42. [DOI: 10.1021/jo101175b] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Naoyuki Shimada
- Faculty of Pharmaceutical Sciences, Hokkaido University, Sapporo 060-0812, Japan
| | - Taiki Hanari
- Faculty of Pharmaceutical Sciences, Hokkaido University, Sapporo 060-0812, Japan
| | - Yasunobu Kurosaki
- Faculty of Pharmaceutical Sciences, Hokkaido University, Sapporo 060-0812, Japan
| | - Koji Takeda
- Faculty of Pharmaceutical Sciences, Hokkaido University, Sapporo 060-0812, Japan
| | - Masahiro Anada
- Faculty of Pharmaceutical Sciences, Hokkaido University, Sapporo 060-0812, Japan
| | - Hisanori Nambu
- Faculty of Pharmaceutical Sciences, Hokkaido University, Sapporo 060-0812, Japan
| | - Motoo Shiro
- Rigaku Corporation, Akishima, Tokyo 196-8666, Japan
| | - Shunichi Hashimoto
- Faculty of Pharmaceutical Sciences, Hokkaido University, Sapporo 060-0812, Japan
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