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Takamura H, Sugitani Y, Morishita R, Yorisue T, Kadota I. Total synthesis and structure-antifouling activity relationship of scabrolide F. Org Biomol Chem 2024; 22:5739-5747. [PMID: 38828517 DOI: 10.1039/d4ob00698d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/05/2024]
Abstract
An efficient synthetic strategy for scabrolide F (7), a norcembranolide diterpene that was isolated from the Taiwanese soft coral Sinularia scabra, has only recently been reported by our group. Herein, we report details of the first total synthesis of 7. The tetrahydrofuran domain of 7 was stereoselectively constructed via the 5-endo-tet cyclization of a hydroxy vinyl epoxide. The reaction of alkyl iodide 30 with dithiane 38, followed by the introduction of an alkene moiety, afforded allylation precursor 41. The coupling of alkyl iodide 42 and allylic stannane 43 was examined as a model experiment of allylation. Because the desired allylated product 44 was not obtained, an alternative synthetic route toward 7 was investigated instead. In the second synthetic approach, fragment-coupling between alkyl iodide 56 and aldehyde 58, macrolactonization, and transannular ring-closing metathesis were used as the key steps to achieve the first total synthesis of 7. We hope that this synthetic strategy provides access to the total synthesis of other macrocyclic norcembranolides. We also evaluated the antifouling activity and toxicity of 7 and its synthetic intermediates toward the cypris larvae of the barnacle Amphibalanus amphitrite. This study is the first to report the antifouling activity of norcembranolides as well as the biological activity of 7.
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Affiliation(s)
- Hiroyoshi Takamura
- Department of Chemistry, Graduate School of Natural Science and Technology, Okayama University, 3-1-1 Tsushimanaka, Kita-ku, Okayama 700-8530, Japan.
| | - Yuki Sugitani
- Department of Chemistry, Graduate School of Natural Science and Technology, Okayama University, 3-1-1 Tsushimanaka, Kita-ku, Okayama 700-8530, Japan.
| | - Ryohei Morishita
- Department of Chemistry, Graduate School of Natural Science and Technology, Okayama University, 3-1-1 Tsushimanaka, Kita-ku, Okayama 700-8530, Japan.
| | - Takefumi Yorisue
- Institute of Natural and Environmental Sciences, University of Hyogo, 6 Yayoigaoka, Sanda 669-1546, Japan
- Division of Nature and Environmental Management, Museum of Nature and Human Activities, 6 Yayoigaoka, Sanda 669-1546, Japan
| | - Isao Kadota
- Department of Chemistry, Graduate School of Natural Science and Technology, Okayama University, 3-1-1 Tsushimanaka, Kita-ku, Okayama 700-8530, Japan.
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2
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Abstract
The first total synthesis of scabrolide F, a norcembranolide isolated from the soft coral Sinularia scabra, is described. Hydroxycarboxylic acid, which is the key synthetic intermediate, was synthesized in a convergent manner by fragment coupling. The obtained hydroxycarboxylic acid was subjected to macrolactonization and subsequent transannular ring-closing metathesis (RCM) to furnish scabrolide F. The synthetic protocol can be extended to the total synthesis of other norcembranolides.
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Affiliation(s)
- Hiroyoshi Takamura
- Department of Chemistry, Graduate School of Natural Science and Technology, Okayama University, 3-1-1 Tsushimanaka, Kita-ku, Okayama 700-8530, Japan
| | - Yuki Sugitani
- Department of Chemistry, Graduate School of Natural Science and Technology, Okayama University, 3-1-1 Tsushimanaka, Kita-ku, Okayama 700-8530, Japan
| | - Ryohei Morishita
- Department of Chemistry, Graduate School of Natural Science and Technology, Okayama University, 3-1-1 Tsushimanaka, Kita-ku, Okayama 700-8530, Japan
| | - Isao Kadota
- Department of Chemistry, Graduate School of Natural Science and Technology, Okayama University, 3-1-1 Tsushimanaka, Kita-ku, Okayama 700-8530, Japan
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3
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Cerri F, Saliu F, Maggioni D, Montano S, Seveso D, Lavorano S, Zoia L, Gosetti F, Lasagni M, Orlandi M, Taglialatela-Scafati O, Galli P. Cytotoxic Compounds from Alcyoniidae: An Overview of the Last 30 Years. Mar Drugs 2022; 20:134. [PMID: 35200663 PMCID: PMC8874409 DOI: 10.3390/md20020134] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2021] [Revised: 01/29/2022] [Accepted: 02/10/2022] [Indexed: 11/30/2022] Open
Abstract
The octocoral family Alcyoniidae represents a rich source of bioactive substances with intriguing and unique structural features. This review aims to provide an updated overview of the compounds isolated from Alcyoniidae and displaying potential cytotoxic activity. In order to allow a better comparison among the bioactive compounds, we focused on molecules evaluated in vitro by using the 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl-2H-tetrazolium bromide (MTT) assay, by far the most widely used method to analyze cell proliferation and viability. Specifically, we surveyed the last thirty years of research, finding 153 papers reporting on 344 compounds with proven cytotoxicity. The data were organized in tables to provide a ranking of the most active compounds, to be exploited for the selection of the most promising candidates for further screening and pre-clinical evaluation as anti-cancer agents. Specifically, we found that (22S,24S)-24-methyl-22,25-epoxyfurost-5-ene-3β,20β-diol (16), 3β,11-dihydroxy-24-methylene-9,11-secocholestan-5-en-9-one (23), (24S)-ergostane-3β,5α,6β,25 tetraol (146), sinulerectadione (227), sinulerectol C (229), and cladieunicellin I (277) exhibited stronger cytotoxicity than their respective positive control and that their mechanism of action has not yet been further investigated.
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Affiliation(s)
- Federico Cerri
- Department of Biotechnology and Biosciences, University of Milano Bicocca, Piazza della Scienza 2, 20126 Milano, Italy;
| | - Francesco Saliu
- Department of Earth and Environmental Sciences DISAT, University of Milano Bicocca, Piazza della Scienza 1, 20126 Milano, Italy; (D.M.); (S.M.); (D.S.); (L.Z.); (F.G.); (M.L.); (M.O.); (P.G.)
| | - Davide Maggioni
- Department of Earth and Environmental Sciences DISAT, University of Milano Bicocca, Piazza della Scienza 1, 20126 Milano, Italy; (D.M.); (S.M.); (D.S.); (L.Z.); (F.G.); (M.L.); (M.O.); (P.G.)
- MaRHE Centre (Marine Research and High Education Center), Magoodhoo Island, Faafu Atoll 12030, Maldives
| | - Simone Montano
- Department of Earth and Environmental Sciences DISAT, University of Milano Bicocca, Piazza della Scienza 1, 20126 Milano, Italy; (D.M.); (S.M.); (D.S.); (L.Z.); (F.G.); (M.L.); (M.O.); (P.G.)
- MaRHE Centre (Marine Research and High Education Center), Magoodhoo Island, Faafu Atoll 12030, Maldives
| | - Davide Seveso
- Department of Earth and Environmental Sciences DISAT, University of Milano Bicocca, Piazza della Scienza 1, 20126 Milano, Italy; (D.M.); (S.M.); (D.S.); (L.Z.); (F.G.); (M.L.); (M.O.); (P.G.)
- MaRHE Centre (Marine Research and High Education Center), Magoodhoo Island, Faafu Atoll 12030, Maldives
| | - Silvia Lavorano
- Costa Edutainment SpA—Acquario di Genova, Area Porto Antico, Ponte Spinola, 16128 Genoa, Italy;
| | - Luca Zoia
- Department of Earth and Environmental Sciences DISAT, University of Milano Bicocca, Piazza della Scienza 1, 20126 Milano, Italy; (D.M.); (S.M.); (D.S.); (L.Z.); (F.G.); (M.L.); (M.O.); (P.G.)
| | - Fabio Gosetti
- Department of Earth and Environmental Sciences DISAT, University of Milano Bicocca, Piazza della Scienza 1, 20126 Milano, Italy; (D.M.); (S.M.); (D.S.); (L.Z.); (F.G.); (M.L.); (M.O.); (P.G.)
| | - Marina Lasagni
- Department of Earth and Environmental Sciences DISAT, University of Milano Bicocca, Piazza della Scienza 1, 20126 Milano, Italy; (D.M.); (S.M.); (D.S.); (L.Z.); (F.G.); (M.L.); (M.O.); (P.G.)
| | - Marco Orlandi
- Department of Earth and Environmental Sciences DISAT, University of Milano Bicocca, Piazza della Scienza 1, 20126 Milano, Italy; (D.M.); (S.M.); (D.S.); (L.Z.); (F.G.); (M.L.); (M.O.); (P.G.)
| | | | - Paolo Galli
- Department of Earth and Environmental Sciences DISAT, University of Milano Bicocca, Piazza della Scienza 1, 20126 Milano, Italy; (D.M.); (S.M.); (D.S.); (L.Z.); (F.G.); (M.L.); (M.O.); (P.G.)
- MaRHE Centre (Marine Research and High Education Center), Magoodhoo Island, Faafu Atoll 12030, Maldives
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4
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Elkhouly HB, Attia EZ, Khedr AIM, Samy MN, Fouad MA. Recent updates on Sinularia soft coral. Mini Rev Med Chem 2021; 22:1152-1196. [PMID: 34579632 DOI: 10.2174/1389557521666210927152249] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2020] [Revised: 04/06/2021] [Accepted: 05/17/2021] [Indexed: 11/22/2022]
Abstract
Marine organisms are recognized as a rich source of bioactive secondary metabolites. The remarkable abundance and diversity of bioactive small molecules isolated from soft corals displayed their essential role in drug discovery for human diseases. Sterols and terpenes, particularly cembranolides, 14-membered cyclic diterpene, demonstrated numerous biological activities, such as antitumor, antimicrobial, antiviral, antidiabetic, anti-osteoporosis and anti-inflammatory. Accordingly, continuous investigation of marine soft corals will be the way for the discovery of a plentiful number of chemical diverse natural products with various biological potentials for prospective pharmaceutical industrial applications. Such review affords plenary inspection of the total secondary metabolites isolated from the Sinularia, from 2008 until 2020, besides their natural sources as well as bioactivities whenever possible.
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Affiliation(s)
- Hanaa Bahaa Elkhouly
- Department of Pharmacognosy, Faculty of Pharmacy, Minia University, 61519 Minia. Egypt
| | - Eman Zekry Attia
- Department of Pharmacognosy, Faculty of Pharmacy, Minia University, 61519 Minia. Egypt
| | | | - Mamdouh Nabil Samy
- Department of Pharmacognosy, Faculty of Pharmacy, Minia University, 61519 Minia. Egypt
| | - Mostafa Ahmed Fouad
- Department of Pharmacognosy, Faculty of Pharmacy, Minia University, 61519 Minia. Egypt
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5
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Francis P, Chakraborty K. Antioxidant and anti-inflammatory cembrane-type diterpenoid from Echinoidea sea urchin Stomopneustes variolaris attenuates pro-inflammatory 5-lipoxygenase. Med Chem Res 2020. [DOI: 10.1007/s00044-020-02511-w] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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6
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Palframan MJ, Pattenden G. Biosynthetic Interrelationships within Polycyclic Cembranoids Isolated from Corals: Conjecture, Biomimetic Synthesis and Reality. European J Org Chem 2019. [DOI: 10.1002/ejoc.201901438] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Matthew J. Palframan
- School of Chemistry; The University of Nottingham; University Park Nottingham NG7 2RD UK
| | - Gerald Pattenden
- School of Chemistry; The University of Nottingham; University Park Nottingham NG7 2RD UK
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7
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Sang VT, Dat TTH, Vinh LB, Cuong LCV, Oanh PTT, Ha H, Kim YH, Anh HLT, Yang SY. Coral and Coral-Associated Microorganisms: A Prolific Source of Potential Bioactive Natural Products. Mar Drugs 2019; 17. [PMID: 31405226 DOI: 10.3390/md1708046] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2019] [Revised: 08/05/2019] [Accepted: 08/07/2019] [Indexed: 05/20/2023] Open
Abstract
Marine invertebrates and their associated microorganisms are rich sources of bioactive compounds. Among them, coral and its associated microorganisms are promising providers of marine bioactive compounds. The present review provides an overview of bioactive compounds that are produced by corals and coral-associated microorganisms, covering the literature from 2010 to March 2019. Accordingly, 245 natural products that possess a wide range of potent bioactivities, such as anti-inflammatory, cytotoxic, antimicrobial, antivirus, and antifouling activities, among others, are described in this review.
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Affiliation(s)
- Vo Thanh Sang
- NTT Hi-Tech Institute, Nguyen Tat Thanh University, 300A Nguyen Tat Thanh, District 5, Ho Chi Minh City 748000, Vietnam
| | - Ton That Huu Dat
- Mientrung Institute for Scientific Research, Vietnam Academy of Science and Technology, 321 Huynh Thuc Khang, Hue City, Thua Thien Hue 531600, Vietnam
| | - Le Ba Vinh
- College of Pharmacy, Chungnam National University, Daejeon 34134, Korea
- Institute of Marine Biochemistry, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Ha Noi 100000, Vietnam
| | - Le Canh Viet Cuong
- Mientrung Institute for Scientific Research, Vietnam Academy of Science and Technology, 321 Huynh Thuc Khang, Hue City, Thua Thien Hue 531600, Vietnam
| | - Phung Thi Thuy Oanh
- Mientrung Institute for Scientific Research, Vietnam Academy of Science and Technology, 321 Huynh Thuc Khang, Hue City, Thua Thien Hue 531600, Vietnam
| | - Hoang Ha
- Institute of Biotechnology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Ha Noi 122300, Vietnam
| | - Young Ho Kim
- College of Pharmacy, Chungnam National University, Daejeon 34134, Korea.
| | - Hoang Le Tuan Anh
- Mientrung Institute for Scientific Research, Vietnam Academy of Science and Technology, 321 Huynh Thuc Khang, Hue City, Thua Thien Hue 531600, Vietnam.
- Graduated University of Science and Technology, VAST, 18 Hoang Quoc Viet, Cau Giay, Ha Noi 122300, Vietnam.
| | - Seo Young Yang
- College of Pharmacy, Chungnam National University, Daejeon 34134, Korea.
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8
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Sang VT, Dat TTH, Vinh LB, Cuong LCV, Oanh PTT, Ha H, Kim YH, Anh HLT, Yang SY. Coral and Coral-Associated Microorganisms: A Prolific Source of Potential Bioactive Natural Products. Mar Drugs 2019; 17:E468. [PMID: 31405226 PMCID: PMC6723858 DOI: 10.3390/md17080468] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2019] [Revised: 08/05/2019] [Accepted: 08/07/2019] [Indexed: 02/06/2023] Open
Abstract
Marine invertebrates and their associated microorganisms are rich sources of bioactive compounds. Among them, coral and its associated microorganisms are promising providers of marine bioactive compounds. The present review provides an overview of bioactive compounds that are produced by corals and coral-associated microorganisms, covering the literature from 2010 to March 2019. Accordingly, 245 natural products that possess a wide range of potent bioactivities, such as anti-inflammatory, cytotoxic, antimicrobial, antivirus, and antifouling activities, among others, are described in this review.
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Affiliation(s)
- Vo Thanh Sang
- NTT Hi-Tech Institute, Nguyen Tat Thanh University, 300A Nguyen Tat Thanh, District 5, Ho Chi Minh City 748000, Vietnam
| | - Ton That Huu Dat
- Mientrung Institute for Scientific Research, Vietnam Academy of Science and Technology, 321 Huynh Thuc Khang, Hue City, Thua Thien Hue 531600, Vietnam
| | - Le Ba Vinh
- College of Pharmacy, Chungnam National University, Daejeon 34134, Korea
- Institute of Marine Biochemistry, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Ha Noi 100000, Vietnam
| | - Le Canh Viet Cuong
- Mientrung Institute for Scientific Research, Vietnam Academy of Science and Technology, 321 Huynh Thuc Khang, Hue City, Thua Thien Hue 531600, Vietnam
| | - Phung Thi Thuy Oanh
- Mientrung Institute for Scientific Research, Vietnam Academy of Science and Technology, 321 Huynh Thuc Khang, Hue City, Thua Thien Hue 531600, Vietnam
| | - Hoang Ha
- Institute of Biotechnology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Ha Noi 122300, Vietnam
| | - Young Ho Kim
- College of Pharmacy, Chungnam National University, Daejeon 34134, Korea.
| | - Hoang Le Tuan Anh
- Mientrung Institute for Scientific Research, Vietnam Academy of Science and Technology, 321 Huynh Thuc Khang, Hue City, Thua Thien Hue 531600, Vietnam.
- Graduated University of Science and Technology, VAST, 18 Hoang Quoc Viet, Cau Giay, Ha Noi 122300, Vietnam.
| | - Seo Young Yang
- College of Pharmacy, Chungnam National University, Daejeon 34134, Korea.
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9
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Chang YT, Huang CY, Tang JY, Liaw CC, Li RN, Liu JR, Sheu JH, Chang HW. Reactive oxygen species mediate soft corals-derived sinuleptolide-induced antiproliferation and DNA damage in oral cancer cells. Onco Targets Ther 2017; 10:3289-3297. [PMID: 28740404 PMCID: PMC5505647 DOI: 10.2147/ott.s138123] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
We previously reported that the soft coral-derived bioactive substance, sinuleptolide, can inhibit the proliferation of oral cancer cells in association with oxidative stress. The functional role of oxidative stress in the cell-killing effect of sinuleptolide on oral cancer cells was not investigated as yet. To address this question, we introduced the reactive oxygen species (ROS) scavenger (N-acetylcysteine [NAC]) in a pretreatment to evaluate the sinuleptolide-induced changes to cell viability, morphology, intracellular ROS, mitochondrial superoxide, apoptosis, and DNA damage of oral cancer cells (Ca9-22). After sinuleptolide treatment, antiproliferation, apoptosis-like morphology, ROS/mitochondrial superoxide generation, annexin V-based apoptosis, and γH2AX-based DNA damage were induced. All these changes were blocked by NAC pretreatment at 4 mM for 1 h. This showed that the cell-killing mechanism of oral cancer cells of sinuleptolide is ROS dependent.
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Affiliation(s)
- Yung-Ting Chang
- Doctoral Degree Program in Marine Biotechnology, National Sun Yat-sen University, Kaohsiung, Taiwan.,Doctoral Degree Program in Marine Biotechnology, Academia Sinica, Taipei, Taiwan
| | - Chiung-Yao Huang
- Department of Marine Biotechnology and Resources, National Sun Yat-sen University, Kaohsiung, Taiwan
| | - Jen-Yang Tang
- Department of Radiation Oncology, Faculty of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan.,Department of Radiation Oncology, Kaohsiung Municipal Ta-Tung Hospital, Kaohsiung, Taiwan
| | - Chih-Chuang Liaw
- Doctoral Degree Program in Marine Biotechnology, National Sun Yat-sen University, Kaohsiung, Taiwan.,Department of Marine Biotechnology and Resources, National Sun Yat-sen University, Kaohsiung, Taiwan
| | - Ruei-Nian Li
- Department of Biomedical Science and Environmental Biology, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Jing-Ru Liu
- Department of Biomedical Science and Environmental Biology, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Jyh-Horng Sheu
- Doctoral Degree Program in Marine Biotechnology, National Sun Yat-sen University, Kaohsiung, Taiwan.,Department of Marine Biotechnology and Resources, National Sun Yat-sen University, Kaohsiung, Taiwan.,Department of Medical Research, China Medical University Hospital, China Medical University, Taichung, Taiwan.,Frontier Center for Ocean Science and Technology, National Sun Yat-sen University, Kaohsiung, Taiwan
| | - Hsueh-Wei Chang
- Department of Biomedical Science and Environmental Biology, Kaohsiung Medical University, Kaohsiung, Taiwan.,Institute of Medical Science and Technology, National Sun Yat-sen University, Kaohsiung, Taiwan.,Cancer Center, Kaohsiung Medical University Hospital; Kaohsiung Medical University, Kaohsiung, Taiwan.,Department of Medical Research, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan.,Research Center for Natural Products and Drug Development, Kaohsiung Medical University, Kaohsiung, Taiwan
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10
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Huang CY, Tseng YJ, Chokkalingam U, Hwang TL, Hsu CH, Dai CF, Sung PJ, Sheu JH. Bioactive Isoprenoid-Derived Natural Products from a Dongsha Atoll Soft Coral Sinularia erecta. JOURNAL OF NATURAL PRODUCTS 2016; 79:1339-1346. [PMID: 27142697 DOI: 10.1021/acs.jnatprod.5b01142] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Four new isoprenoids, including two norcembranoids sinulerectols A and B (1 and 2), a cembranoid sinulerectol C (3), and a degraded cembranoid sinulerectadione (4), along with three known isoprenoids, an unnamed norcembrene (5), sinularectin (6), and ineleganolide (7), and a known nitrogen-containing compound (Z)-N-[2-(4-hydroxyphenyl)ethyl]-3-methyldodec-2-enamide (8), were isolated from an extract of the marine soft coral Sinularia erecta. The structure of sinularectin (6) was revised, too. Compounds 3, 4, and 8 exhibited inhibitory activity against the proliferation of a limited panel of cancer cell lines, whereas 1, 2, and 8 displayed potent anti-inflammatory activity in fMLP/CB-stimulated human neutrophils.
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Affiliation(s)
- Chiung-Yao Huang
- Department of Marine Biotechnology and Resources, National Sun Yat-sen University , Kaohsiung 804, Taiwan
| | - Yen-Ju Tseng
- Department of Marine Biotechnology and Resources, National Sun Yat-sen University , Kaohsiung 804, Taiwan
| | - Uvarani Chokkalingam
- Department of Marine Biotechnology and Resources, National Sun Yat-sen University , Kaohsiung 804, Taiwan
| | - Tsong-Long Hwang
- Graduate Institute of Natural Products, College of Medicine, Chang Gung University, Research Center for Industry of Human Ecology and Graduate Institute of Health Industry Technology, Chang Gung University of Science and Technology, Department of Anesthesiology, Chang Gung Memorial Hospital, Taoyuan 333, Taiwan
| | - Chi-Hsin Hsu
- Department of Marine Biotechnology and Resources, National Sun Yat-sen University , Kaohsiung 804, Taiwan
| | - Chang-Feng Dai
- Institute of Oceanography, National Taiwan University , Taipei 106, Taiwan
| | - Ping-Jyun Sung
- Department of Marine Biotechnology and Resources, National Sun Yat-sen University , Kaohsiung 804, Taiwan
- National Museum of Marine Biology & Aquarium , Pingtung 944, Taiwan
| | - Jyh-Horng Sheu
- Department of Marine Biotechnology and Resources, National Sun Yat-sen University , Kaohsiung 804, Taiwan
- Institute of Natural Products, Kaohsiung Medical University , Kaohsiung 807, Taiwan
- Department of Medical Research, China Medical University Hospital, China Medical University , Taichung 404, Taiwan
- Frontier Center for Ocean Science and Technology, National Sun Yat-sen University , Kaohsiung 804, Taiwan
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11
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Abstract
This review covers the literature published in 2013 for marine natural products (MNPs), with 982 citations (644 for the period January to December 2013) referring to compounds isolated from marine microorganisms and phytoplankton, green, brown and red algae, sponges, cnidarians, bryozoans, molluscs, tunicates, echinoderms, mangroves and other intertidal plants and microorganisms. The emphasis is on new compounds (1163 for 2013), together with the relevant biological activities, source organisms and country of origin. Reviews, biosynthetic studies, first syntheses, and syntheses that lead to the revision of structures or stereochemistries, have been included.
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Affiliation(s)
- John W Blunt
- Department of Chemistry, University of Canterbury, Christchurch, New Zealand.
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12
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Bioactive cembrane derivatives from the Indian Ocean soft coral, Sinularia kavarattiensis. Mar Drugs 2014; 12:4045-68. [PMID: 25056629 PMCID: PMC4113814 DOI: 10.3390/md12074045] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2014] [Revised: 06/05/2014] [Accepted: 06/17/2014] [Indexed: 12/21/2022] Open
Abstract
Marine organisms and their metabolites represent a unique source of potential pharmaceutical substances. In this study, we examined marine-derived substances for their bioactive properties in a cell-based Chikungunya virus (CHIKV) replicon model and for in vitro anti-inflammatory activity. In the screening of a marine sample library, crude extracts from the Indian soft coral, Sinularia kavarattiensis, showed promising activity against the CHIKV replicon. Bioassay-guided chemical fractionation of S. kavarattiensis resulted in the isolation of six known norcembranoids (1-6) and one new compound, named kavaranolide (7). The structures were elucidated on the basis of NMR and MS spectroscopic data. Compounds 1-3 and 5-7 were evaluated for their replicon-inhibiting potential in the CHIKV model by using a luminescence-based detection technique and live cell imaging. Compounds 1 and 2 showed moderate inhibition of the CHIKV replicon, but imaging studies also revealed cytotoxic properties. Moreover, the effects of the isolated compounds on primary microglial cells, an experimental model for neuroinflammation, were evaluated. Compound 2 was shown to modulate the immune response in microglial cells and to possess potential anti-inflammatory properties by dose-dependently reducing the release of pro- and anti-inflammatory cytokines.
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13
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Abstract
This review covers the literature published in 2012 for marine natural products, with 1035 citations (673 for the period January to December 2012) referring to compounds isolated from marine microorganisms and phytoplankton, green, brown and red algae, sponges, cnidarians, bryozoans, molluscs, tunicates, echinoderms, mangroves and other intertidal plants and microorganisms. The emphasis is on new compounds (1241 for 2012), together with the relevant biological activities, source organisms and country of origin. Biosynthetic studies, first syntheses, and syntheses that lead to the revision of structures or stereochemistries, have been included.
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Affiliation(s)
- John W Blunt
- Department of Chemistry, University of Canterbury, Christchurch, New Zealand.
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14
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Hu LC, Yen WH, Su JH, Chiang MYN, Wen ZH, Chen WF, Lu TJ, Chang YW, Chen YH, Wang WH, Wu YC, Sung PJ. Cembrane derivatives from the soft corals, Sinularia gaweli and Sinularia flexibilis. Mar Drugs 2013; 11:2154-67. [PMID: 23774887 PMCID: PMC3721226 DOI: 10.3390/md11062154] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2013] [Revised: 05/20/2013] [Accepted: 06/05/2013] [Indexed: 12/31/2022] Open
Abstract
A new norcembranoidal diterpene, 1-epi-sinulanorcembranolide A (1), and a new cembranoidal diterpene, flexibilin D (2), were isolated from the soft corals, Sinularia gaweli and Sinularia flexibilis, respectively. The structures of new metabolites 1 and 2 were elucidated by spectroscopic methods, and compound 2 was found to significantly inhibit the accumulation of the pro-inflammatory iNOS and COX-2 proteins of the lipopolysaccharide (LPS)-stimulated RAW264.7 macrophage cells. In addition, S. flexibilis yielded a known cembrane, 5-dehydrosinulariolide (3); the structure, including its absolute stereochemistry, was further confirmed by single-crystal X-ray diffraction analysis.
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Affiliation(s)
- Li-Chung Hu
- Graduate Institute of Marine Biotechnology and Department of Life Science and Institute of Biotechnology, National Dong Hwa University, Pingtung 944, Taiwan; E-Mails: (L.-C.H.); (W.-H.Y.); (J.-H.S.)
- National Museum of Marine Biology and Aquarium, Pingtung 944, Taiwan; E-Mails: (Y.-H.C.); (W.-H.W.)
| | - Wei-Hsuan Yen
- Graduate Institute of Marine Biotechnology and Department of Life Science and Institute of Biotechnology, National Dong Hwa University, Pingtung 944, Taiwan; E-Mails: (L.-C.H.); (W.-H.Y.); (J.-H.S.)
- National Museum of Marine Biology and Aquarium, Pingtung 944, Taiwan; E-Mails: (Y.-H.C.); (W.-H.W.)
| | - Jui-Hsin Su
- Graduate Institute of Marine Biotechnology and Department of Life Science and Institute of Biotechnology, National Dong Hwa University, Pingtung 944, Taiwan; E-Mails: (L.-C.H.); (W.-H.Y.); (J.-H.S.)
- National Museum of Marine Biology and Aquarium, Pingtung 944, Taiwan; E-Mails: (Y.-H.C.); (W.-H.W.)
| | - Michael Yen-Nan Chiang
- Department of Chemistry, National Sun Yat-sen University, Kaohsiung 804, Taiwan; E-Mail:
| | - Zhi-Hong Wen
- Department of Marine Biotechnology and Resources and Asia-Pacific Ocean Research Center, National Sun Yat-sen University, Kaohsiung 804, Taiwan; E-Mail:
| | - Wu-Fu Chen
- Department of Neurosurgery, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung 833, Taiwan; E-Mail:
| | - Ting-Jang Lu
- Graduate Institute of Food Science and Technology, National Taiwan University, Taipei 106, Taiwan; E-Mail:
| | - Yu-Wei Chang
- Department of Food Science, National Taiwan Ocean University, Keelung 202, Taiwan; E-Mail:
| | - Yung-Husan Chen
- National Museum of Marine Biology and Aquarium, Pingtung 944, Taiwan; E-Mails: (Y.-H.C.); (W.-H.W.)
| | - Wei-Hsien Wang
- National Museum of Marine Biology and Aquarium, Pingtung 944, Taiwan; E-Mails: (Y.-H.C.); (W.-H.W.)
- Department of Marine Biotechnology and Resources and Asia-Pacific Ocean Research Center, National Sun Yat-sen University, Kaohsiung 804, Taiwan; E-Mail:
| | - Yang-Chang Wu
- School of Pharmacy, College of Pharmacy, China Medical University, Taichung 404, Taiwan
- Chinese Medicine Research and Development Center, China Medical University Hospital, Taichung 404, Taiwan
- Center for Molecular Medicine, China Medical University Hospital, Taichung 404, Taiwan
- Authors to whom correspondence should be addressed; E-Mails: (Y.-C.W.); (P.-J.S.); Tel.: +886-4-220-57513 (Y.-C.W.); Fax: +886-4-220-60248 (Y.-C.W.); Tel.: +886-8-882-5037 (P.-J.S.); Fax: +886-8-882-5087 (P.-J.S.)
| | - Ping-Jyun Sung
- Graduate Institute of Marine Biotechnology and Department of Life Science and Institute of Biotechnology, National Dong Hwa University, Pingtung 944, Taiwan; E-Mails: (L.-C.H.); (W.-H.Y.); (J.-H.S.)
- National Museum of Marine Biology and Aquarium, Pingtung 944, Taiwan; E-Mails: (Y.-H.C.); (W.-H.W.)
- Department of Marine Biotechnology and Resources and Asia-Pacific Ocean Research Center, National Sun Yat-sen University, Kaohsiung 804, Taiwan; E-Mail:
- Graduate Institute of Natural Products, Kaohsiung Medical University, Kaohsiung 807, Taiwan
- Authors to whom correspondence should be addressed; E-Mails: (Y.-C.W.); (P.-J.S.); Tel.: +886-4-220-57513 (Y.-C.W.); Fax: +886-4-220-60248 (Y.-C.W.); Tel.: +886-8-882-5037 (P.-J.S.); Fax: +886-8-882-5087 (P.-J.S.)
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Yen WH, Su YD, Chang YC, Chen YH, Chen YH, Dai CF, Wen ZH, Su JH, Sung PJ. Sinulanorcembranolide A, a novel norcembranoidal diterpene from the octocoral Sinularia gaweli. Tetrahedron Lett 2013. [DOI: 10.1016/j.tetlet.2013.02.077] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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16
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Yen WH, Chen WF, Cheng CH, Dai CF, Lu MC, Su JH, Su YD, Chen YH, Chang YC, Chen YH, Sheu JH, Lin CS, Wen ZH, Sung PJ. A new 5α,8α-Epidioxysterol from the soft coral Sinularia gaweli. Molecules 2013; 18:2895-903. [PMID: 23459300 PMCID: PMC6270315 DOI: 10.3390/molecules18032895] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2013] [Revised: 02/27/2013] [Accepted: 02/28/2013] [Indexed: 12/12/2022] Open
Abstract
A new sterol, (22R,23R,24R)-5α,8α-epidioxy-22,23-methylene-24-methyl-cholest-6,9(11)-dien-3β-ol (1), and two known sterols, (22R,23R,24R)-5α,8α-epidioxy-22,23-methylene-24-methylcholest-6-en-3β-ol (2) and 24-methylenecholestane-1α,3β,5α, 6β,11α-pentol (3), were isolated from the soft coral Sinularia gaweli. The structure of sterol 1 was established by spectroscopic methods and by comparison of the spectral data with those of known analogues. The cytotoxicity of sterols 1–3 towards various tumor cells is reported.
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Affiliation(s)
- Wei-Hsuan Yen
- Graduate Institute of Marine Biotechnology and Department of Life Science and Institute of Biotechnology, National Dong Hwa University, Pingtung 944, Taiwan; E-Mails: (W.-H.Y.); (M.-C.L.); (J.-H.S.); (Y.-H.C.)
- National Museum of Marine Biology and Aquarium, Pingtung 944, Taiwan; E-Mails: (Y.-D.S.); (Y.-C.C.); (Y.-H.C.)
| | - Wu-Fu Chen
- Department of Neurosurgery, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung 833, Taiwan; E-Mails: (W.-F.C.); (C.-H.C.)
| | - Ching-Hsiao Cheng
- Department of Neurosurgery, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung 833, Taiwan; E-Mails: (W.-F.C.); (C.-H.C.)
| | - Chang-Feng Dai
- Institute of Oceanography, National Taiwan University, Taipei 112, Taiwan; E-Mail:
| | - Mei-Chin Lu
- Graduate Institute of Marine Biotechnology and Department of Life Science and Institute of Biotechnology, National Dong Hwa University, Pingtung 944, Taiwan; E-Mails: (W.-H.Y.); (M.-C.L.); (J.-H.S.); (Y.-H.C.)
- National Museum of Marine Biology and Aquarium, Pingtung 944, Taiwan; E-Mails: (Y.-D.S.); (Y.-C.C.); (Y.-H.C.)
| | - Jui-Hsin Su
- Graduate Institute of Marine Biotechnology and Department of Life Science and Institute of Biotechnology, National Dong Hwa University, Pingtung 944, Taiwan; E-Mails: (W.-H.Y.); (M.-C.L.); (J.-H.S.); (Y.-H.C.)
- National Museum of Marine Biology and Aquarium, Pingtung 944, Taiwan; E-Mails: (Y.-D.S.); (Y.-C.C.); (Y.-H.C.)
- Department of Marine Biotechnology and Resources and Asia-Pacific Ocean Research Center, National Sun Yat-sen University, Kaohsiung 833, Taiwan; E-Mails: (J.-H.S.); (C.-H.L.)
| | - Yin-Di Su
- National Museum of Marine Biology and Aquarium, Pingtung 944, Taiwan; E-Mails: (Y.-D.S.); (Y.-C.C.); (Y.-H.C.)
- Department of Marine Biotechnology and Resources and Asia-Pacific Ocean Research Center, National Sun Yat-sen University, Kaohsiung 833, Taiwan; E-Mails: (J.-H.S.); (C.-H.L.)
| | - Yu-Hsin Chen
- Graduate Institute of Marine Biotechnology and Department of Life Science and Institute of Biotechnology, National Dong Hwa University, Pingtung 944, Taiwan; E-Mails: (W.-H.Y.); (M.-C.L.); (J.-H.S.); (Y.-H.C.)
- National Museum of Marine Biology and Aquarium, Pingtung 944, Taiwan; E-Mails: (Y.-D.S.); (Y.-C.C.); (Y.-H.C.)
| | - Yu-Chia Chang
- National Museum of Marine Biology and Aquarium, Pingtung 944, Taiwan; E-Mails: (Y.-D.S.); (Y.-C.C.); (Y.-H.C.)
- Doctoral Degree Program in Marine Biotechnology, National Sun Yat-sen University and Academia Sinica, Kaohsiung 804, Taiwan
| | - Yung-Husan Chen
- National Museum of Marine Biology and Aquarium, Pingtung 944, Taiwan; E-Mails: (Y.-D.S.); (Y.-C.C.); (Y.-H.C.)
| | - Jyh-Horng Sheu
- Department of Marine Biotechnology and Resources and Asia-Pacific Ocean Research Center, National Sun Yat-sen University, Kaohsiung 833, Taiwan; E-Mails: (J.-H.S.); (C.-H.L.)
- Doctoral Degree Program in Marine Biotechnology, National Sun Yat-sen University and Academia Sinica, Kaohsiung 804, Taiwan
| | - Chan-Shing Lin
- Department of Marine Biotechnology and Resources and Asia-Pacific Ocean Research Center, National Sun Yat-sen University, Kaohsiung 833, Taiwan; E-Mails: (J.-H.S.); (C.-H.L.)
- Doctoral Degree Program in Marine Biotechnology, National Sun Yat-sen University and Academia Sinica, Kaohsiung 804, Taiwan
| | - Zhi-Hong Wen
- Department of Marine Biotechnology and Resources and Asia-Pacific Ocean Research Center, National Sun Yat-sen University, Kaohsiung 833, Taiwan; E-Mails: (J.-H.S.); (C.-H.L.)
- Doctoral Degree Program in Marine Biotechnology, National Sun Yat-sen University and Academia Sinica, Kaohsiung 804, Taiwan
- Authors to whom correspondence should be addressed; E-Mail: (Z.-H.W.); (P.-J.S.); Tel.: +886-7-525-2021 (Z.-H.W.); +886-8-882-5037 (P.-J.S.); Fax: +886-7-525-5020 (Z.-H.W.); +886-8-882-5087 (P.-J.S.)
| | - Ping-Jyun Sung
- Graduate Institute of Marine Biotechnology and Department of Life Science and Institute of Biotechnology, National Dong Hwa University, Pingtung 944, Taiwan; E-Mails: (W.-H.Y.); (M.-C.L.); (J.-H.S.); (Y.-H.C.)
- National Museum of Marine Biology and Aquarium, Pingtung 944, Taiwan; E-Mails: (Y.-D.S.); (Y.-C.C.); (Y.-H.C.)
- Department of Marine Biotechnology and Resources and Asia-Pacific Ocean Research Center, National Sun Yat-sen University, Kaohsiung 833, Taiwan; E-Mails: (J.-H.S.); (C.-H.L.)
- Graduate Institute of Natural Products, Kaohsiung Medical University, Kaohsiung 807, Taiwan
- Authors to whom correspondence should be addressed; E-Mail: (Z.-H.W.); (P.-J.S.); Tel.: +886-7-525-2021 (Z.-H.W.); +886-8-882-5037 (P.-J.S.); Fax: +886-7-525-5020 (Z.-H.W.); +886-8-882-5087 (P.-J.S.)
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17
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Huang KJ, Chen YC, El-Shazly M, Du YC, Su JH, Tsao CW, Yen WH, Chang WB, Su YD, Yeh YT, Lu MC. 5-Episinuleptolide acetate, a norcembranoidal diterpene from the formosan soft coral Sinularia sp., induces leukemia cell apoptosis through Hsp90 inhibition. Molecules 2013; 18:2924-33. [PMID: 23459302 PMCID: PMC6270000 DOI: 10.3390/molecules18032924] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2013] [Revised: 02/22/2013] [Accepted: 02/25/2013] [Indexed: 01/24/2023] Open
Abstract
5-Episinuleptolide acetate (5EPA), a cytotoxic norcembranoidal diterpene recently identified from the Formosan soft coral Sinularia sp., exhibited potent activity against the K562, Molt 4 and HL 60 cancer cell lines. The antiproliferative assay, as well as the annexin V-FITC/propidium iodide (PI) apoptotic assay, indicated that the HL 60 cell line is the most sensitive one towards 5EPA. This diterpenoid led to caspases -3, -8, and -9 activation as well as PARP cleavage. It also induced ROS generation, calcium accumulation and disruption of mitochondrial membrane potential. Additionally, the expression levels of Hsp90 protein and several client proteins were downregulated in response to 5EPA treatment. These results suggest that 5EPA’s cytotoxic effect on HL 60 cells may be attributed to the inhibition of Hsp90 as well as the induction of mitochondrial stress which finally results in apoptotic cell death.
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Affiliation(s)
- Kao-Jean Huang
- Department of Life Science, National Dong Hwa University, Hualien, 974, Taiwan
| | - Yu-Cheng Chen
- Graduate Institute of Marine Biotechnology, National Dong Hwa University, Pingtung 944, Taiwan
| | - Mohamed El-Shazly
- Graduate Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 807, Taiwan
- Department of Pharmacognosy and Natural Products Chemistry, Faculty of Pharmacy, Ain-Shams University, Organization of African Unity Street, Abassia, Cairo 11566, Egypt
| | - Ying-Chi Du
- Graduate Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 807, Taiwan
| | - Jui-Hsin Su
- Graduate Institute of Marine Biotechnology, National Dong Hwa University, Pingtung 944, Taiwan
- National Museum of Marine Biology & Aquarium, Pingtung 944, Taiwan
| | - Chia-Wei Tsao
- Graduate Institute of Marine Biotechnology, National Dong Hwa University, Pingtung 944, Taiwan
| | - Wei-Hsuan Yen
- Graduate Institute of Marine Biotechnology, National Dong Hwa University, Pingtung 944, Taiwan
| | - Wen-Been Chang
- National Museum of Marine Biology & Aquarium, Pingtung 944, Taiwan
- Institute of Marine Biodiversity and Evolution, National Dong Hwa University, Pingtung 944, Taiwan
| | - Yin-Di Su
- Graduate Institute of Marine Biotechnology, National Dong Hwa University, Pingtung 944, Taiwan
- Institute of Marine Biodiversity and Evolution, National Dong Hwa University, Pingtung 944, Taiwan
| | - Yao-Tsung Yeh
- Department of Medical Laboratory Sciences and Biotechnology, Fooyin University, Kaohsiung 831, Taiwan
| | - Mei-Chin Lu
- Department of Life Science, National Dong Hwa University, Hualien, 974, Taiwan
- Graduate Institute of Marine Biotechnology, National Dong Hwa University, Pingtung 944, Taiwan
- Author to whom correspondence should be addressed; E-Mail: ; Tel.: +886-8882-5037; Fax: +886-8882-5087
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