251
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Ali M, Khan SA, Rauf A, Khan H, Shah MR, Ahmad M, Mubarak MS, Ben Hadda T. Characterization and antinociceptive activity (in vivo) of kempferol-3,4′-di-O-α-L-rhamnopyranoside isolated from Dryopteris cycadina. Med Chem Res 2015. [DOI: 10.1007/s00044-015-1373-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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252
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Yang XW, Li MM, Liu X, Ferreira D, Ding Y, Zhang JJ, Liao Y, Qin HB, Xu G. Polycyclic Polyprenylated Acylphloroglucinol Congeners Possessing Diverse Structures from Hypericum henryi. JOURNAL OF NATURAL PRODUCTS 2015; 78:885-95. [PMID: 25871261 DOI: 10.1021/acs.jnatprod.5b00057] [Citation(s) in RCA: 79] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
Polycyclic polyprenylated acylphloroglucinols (PPAPs) are a class of hybrid natural products sharing the mevalonate/methylerythritol phosphate and polyketide biosynthetic pathways and showing considerable structural and bioactive diversity. In a systematic phytochemical investigation of Hypericum henryi, 40 PPAP-type derivatives, including the new compounds hyphenrones G-Q, were obtained. These compounds represent 12 different structural types, including four unusual skeletons exemplified by 5, 8, 10, and 17. The 12 different core structures found are explicable in terms of their biosynthetic origin. The structure of a known PPAP, perforatumone, was revised to hyphenrone A (5) by NMR spectroscopic and biomimetic synthesis methods. Several compounds exhibited inhibitory activities against acetylcholinesterase and human tumor cell lines. This study deals with the structural diversity, function, and biogenesis of natural PPAPs.
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Affiliation(s)
- Xing-Wei 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
- ⊥University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - Ming-Ming 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
| | - Xia 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
- ⊥University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | | | | | - Jing-Jing Zhang
- †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
- ⊥University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - Yang Liao
- †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
- ⊥University of Chinese Academy of Sciences, Beijing 100049, People's Republic of 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, People's Republic of China
| | - Gang Xu
- †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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253
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6-(1,3-Dihydroxy-3-phenylpropylidene)-5-hydroxy-2,2,4-trimethylcyclohex-4-ene-1,3-dione. MOLBANK 2015. [DOI: 10.3390/m853] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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254
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Nishimura E, Ohfune Y, Shinada T. Total Synthesis of a Monomeric Phloroglucinol Derivative Isolated from Myrtus communis. CHEM LETT 2015. [DOI: 10.1246/cl.141168] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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255
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Zhao J, Liu W, Wang JC. Recent Advances Regarding Constituents and Bioactivities of Plants from the GenusHypericum. Chem Biodivers 2015; 12:309-49. [DOI: 10.1002/cbdv.201300304] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2013] [Indexed: 11/08/2022]
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256
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Kouloura E, Skaltsounis AL, Michel S, Halabalaki M. Ion tree-based structure elucidation of acetophenone dimers (AtA) from Acronychia pedunculata and their identification in extracts by liquid chromatography electrospray ionization LTQ-Orbitrap mass spectrometry. JOURNAL OF MASS SPECTROMETRY : JMS 2015; 50:495-512. [PMID: 25800186 DOI: 10.1002/jms.3556] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2014] [Revised: 10/26/2014] [Accepted: 11/27/2014] [Indexed: 06/04/2023]
Abstract
Acronychia-type acetophenones (AtA) is a chemical group of compounds of important structural and biological interest, abundant in Acronychia species. However, there are no data available for their characterization using mass spectrometry. In the current work, AtA have been investigated by multistage high resolution mass spectrometry and both electrospray ionization and atmospheric pressure chemical ionization, in positive and negative mode, were utilized for their structure elucidation and identification. The analysis of AtA using a linear ion trap-Orbitrap analyzer enabled the structural determination of key fragment ions and cleavages, which can be used for the structural characterization thereof. A systematic nomenclature based on protonated and deprotonated fragment ions under collision-induced dissociation conditions and decision trees for the structural determination of AtA are proposed. Furthermore, taking advantage of the characteristic fragmentation patterns, a selective Ultra High Performance Liquid Chromatography Electrospray Ionization multistage Mass Spectrometry (UHPLC-ESI(-)-MS(n)) method was developed and successfully applied for the dereplication of known AtA and the identification of potentially new ones in Acronychia extracts. Despite the structure similarity and the presence of isomers, accurate characterization of known and unknown AtA derivatives was possible.
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Affiliation(s)
- Eirini Kouloura
- Department of Pharmacognosy and Natural Products Chemistry, Faculty of Pharmacy, University of Athens, Panepistimioupolis Zografou, Athens, 15771, Greece; UMR/CNRS 8638, Faculté de Pharmacie, Laboratoire de Pharmacognosie de l'Université Paris Descartes, 4 Avenue de l'Observatoire, F-75006, Paris, France
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257
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Oya A, Tanaka N, Kusama T, Kim SY, Hayashi S, Kojoma M, Hishida A, Kawahara N, Sakai K, Gonoi T, Kobayashi J. Prenylated benzophenones from Triadenum japonicum. JOURNAL OF NATURAL PRODUCTS 2015; 78:258-264. [PMID: 25602977 DOI: 10.1021/np500827h] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Six new prenylated benzophenones, (-)-nemorosonol (1) and trijapins A-E (2-6), were isolated from the aerial parts of Triadenum japonicum. (-)-Nemorosonol (1) and trijapins A-C (2-4) have a common tricyclo[4.3.1.0(3,7)]decane skeleton, while 1 is an enantiomer of (+)-nemorosonol previously isolated from Clusia nemorosa. The absolute configuration of (-)-nemorosonol (1) was assigned by ECD spectroscopy. Trijapins A-C (2-4) are analogues of 1 possessing an additional tetrahydrofuran ring. Trijapins D (5) and E (6) are prenylated benzophenones with a 1,2-dioxane moiety and a hydroperoxy group, respectively. (-)-Nemorosonol (1) exhibited antimicrobial activity against Escherichia coli (MIC, 8 μg/mL), Staphylococcus aureus (MIC, 16 μg/mL), Bacillus subtilis (MIC, 16 μg/mL), Micrococcus luteus (MIC, 32 μg/mL), Aspergillus niger (IC50, 16 μg/mL), Trichophyton mentagrophytes (IC50, 8 μg/mL), and Candida albicans (IC50, 32 μg/mL), while trijapin D (5) showed antimicrobial activity against C. albicans (IC50, 8 μg/mL).
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Affiliation(s)
- Atsushi Oya
- Graduate School of Pharmaceutical Sciences, Hokkaido University , Sapporo 060-0812, Japan
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258
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Liao Y, Liu X, Yang J, Lao YZ, Yang XW, Li XN, Zhang JJ, Ding ZJ, Xu HX, Xu G. Hypersubones A and B, new polycyclic acylphloroglucinols with intriguing adamantane type cores from Hypericum subsessile. Org Lett 2015; 17:1172-5. [PMID: 25699579 DOI: 10.1021/acs.orglett.5b00100] [Citation(s) in RCA: 64] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Hypersubones A and B (1, 2), two adamantane type polycyclic polyprenylated acylphloroglucinols possessing an unprecedented seco-adamantane architecture and a tetracyclo-[6.3.1.1(3,10).0(4,8)]-tridecane core combined with a peroxide ring, respectively, were isolated from Hypericum subsessile together with three analogues (3-5). Their structures were determined by extensive NMR spectroscopic analysis, ECD calculations, and single-crystal X-ray diffraction. Compound 2 exhibited significant cytotoxicities against four human cancer lines in vitro (IC50 0.07-7.52 μM).
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Affiliation(s)
- Yang Liao
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences , Kunming 650201, Yunnan PR China
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259
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Yang YI, Ahn JH, Choi YS, Choi JH. Brown algae phlorotannins enhance the tumoricidal effect of cisplatin and ameliorate cisplatin nephrotoxicity. Gynecol Oncol 2015; 136:355-64. [PMID: 25462204 DOI: 10.1016/j.ygyno.2014.11.015] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2014] [Revised: 11/14/2014] [Accepted: 11/15/2014] [Indexed: 12/19/2022]
Abstract
OBJECTIVE The clinical application of cisplatin is limited due to its drug resistance and side effects. We investigated the effect of a phlorotannin-rich extract from the edible brown alga Ecklonia cava (PREC) and its major phlorotannin (dieckol) on cisplatin responsiveness and side effects. METHODS The A2780 and SKOV3 ovarian cancer cell lines and the SKOV3-bearing mouse model were used. The MTT assay was applied to assess cell viability, and the annexin V assay was employed for apoptosis analysis. Reactive oxygen species (ROS) production and protein expression were assessed by H2DCFDA staining and Western blotting, respectively. RESULTS We found that PREC enhanced the tumor growth-inhibitory effect of cisplatin and diminished cisplatin-induced nephrotoxicity and weight loss in SKOV3-bearing mice. PREC augmented cisplatin-induced apoptosis by activating caspases in SKOV3 and A2780 ovarian cancer cells. In addition, a combination of PREC and cisplatin-induced ovarian cancer cell apoptosis by downregulating the Akt and NFκB pathways. We further demonstrated that PREC increased intracellular ROS and that antioxidants significantly attenuated Akt-NFκB activation and apoptosis in ovarian cancer cells. In contrast, PREC inhibited cisplatin-induced ROS production and cell death in normal HEK293 kidney cells. Dieckol, a major compound in PREC, significantly enhanced the inhibition of tumor growth by cisplatin with less weight loss and kidney damage in a mouse model. CONCLUSION These data suggest that brown algae phlorotannins may improve the efficacy of platinum drugs for ovarian cancer by enhancing cancer cell apoptosis via the ROS/Akt/NFκB pathway and reduce nephrotoxicity by protecting against normal kidney cell damage.
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Affiliation(s)
- Yeong-In Yang
- Department of Life & Nanopharmaceutical Science, Kyung Hee University, Seoul, South Korea; Division of Molecular Biology, College of Pharmacy, Kyung Hee University, Seoul, South Korea
| | - Ji-Hye Ahn
- Department of Life & Nanopharmaceutical Science, Kyung Hee University, Seoul, South Korea; Division of Molecular Biology, College of Pharmacy, Kyung Hee University, Seoul, South Korea
| | - Youn Seok Choi
- Department of Obstetrics and Gynecology, School of Medicine, Catholic University of Daegu, Daegu, South Korea
| | - Jung-Hye Choi
- Department of Life & Nanopharmaceutical Science, Kyung Hee University, Seoul, South Korea; Division of Molecular Biology, College of Pharmacy, Kyung Hee University, Seoul, South Korea.
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260
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Wu L, Luo J, Zhang Y, Zhu M, Wang X, Luo J, Yang M, Yu B, Yao H, Dai Y, Guo Q, Chen Y, Sun H, Kong L. Isolation and biomimetic synthesis of (±)-calliviminones A and B, two novel Diels–Alder adducts, from Callistemon viminalis. Tetrahedron Lett 2015. [DOI: 10.1016/j.tetlet.2014.11.075] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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261
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Nishimura E, Ohfune Y, Shinada T. Total synthesis and structure elucidation of (±)-triumphalone and (±)-isotriumphalone. Tetrahedron Lett 2015. [DOI: 10.1016/j.tetlet.2014.12.005] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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262
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263
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Bharate JB, Batarseh YS, Wani A, Sharma S, Vishwakarma RA, Kaddoumi A, Kumar A, Bharate SB. Synthesis and P-glycoprotein induction activity of colupulone analogs. Org Biomol Chem 2015; 13:5488-96. [DOI: 10.1039/c5ob00554j] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A diprenylated acylphloroglucinol was identified as a potent P-gp inducer and showing ability to increase amyloid-beta transport across BBB, thus it is a potential anti-Alzheimer lead compound.
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Affiliation(s)
- Jaideep B. Bharate
- Medicinal Chemistry Division
- CSIR-Indian Institute of Integrative Medicine (CSIR)
- Jammu-180001
- India
- Academy of Scientific & Innovative Research (AcSIR)
| | | | - Abubakar Wani
- Cancer Pharmacology Division
- CSIR-Indian Institute of Integrative Medicine
- Jammu-180001
- India
| | - Sadhana Sharma
- Academy of Scientific & Innovative Research (AcSIR)
- CSIR-Indian Institute of Integrative Medicine
- Jammu-180001
- India
- Cancer Pharmacology Division
| | - Ram A. Vishwakarma
- Medicinal Chemistry Division
- CSIR-Indian Institute of Integrative Medicine (CSIR)
- Jammu-180001
- India
- Academy of Scientific & Innovative Research (AcSIR)
| | - Amal Kaddoumi
- School of Pharmacy
- The University of Louisiana at Monroe
- USA
| | - Ajay Kumar
- Cancer Pharmacology Division
- CSIR-Indian Institute of Integrative Medicine
- Jammu-180001
- India
| | - Sandip B. Bharate
- Medicinal Chemistry Division
- CSIR-Indian Institute of Integrative Medicine (CSIR)
- Jammu-180001
- India
- Academy of Scientific & Innovative Research (AcSIR)
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264
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Wu L, Luo J, Wang XB, Li RJ, Zhang YL, Kong LY. Calliviminones C–H: six new hetero- and carbon-Diels–Alder adducts with unusual skeletons from the fruits of Callistemon viminalis. RSC Adv 2015. [DOI: 10.1039/c5ra19651e] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023] Open
Abstract
Calliviminones C–H (1–6), six novel Diels–Alder adducts of a polymethylated phloroglucinol derivative and acyclic monoterpene (myrcene), were isolated from the fruits of Callistemon viminalis.
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Affiliation(s)
- Lin Wu
- State Key Laboratory of Natural Medicines
- Department of Natural Medicinal Chemistry
- China Pharmaceutical University
- Nanjing 210009
- People's Republic of China
| | - Jun Luo
- State Key Laboratory of Natural Medicines
- Department of Natural Medicinal Chemistry
- China Pharmaceutical University
- Nanjing 210009
- People's Republic of China
| | - Xiao-bing Wang
- State Key Laboratory of Natural Medicines
- Department of Natural Medicinal Chemistry
- China Pharmaceutical University
- Nanjing 210009
- People's Republic of China
| | - Rui-jun Li
- State Key Laboratory of Natural Medicines
- Department of Natural Medicinal Chemistry
- China Pharmaceutical University
- Nanjing 210009
- People's Republic of China
| | - Ya-long Zhang
- State Key Laboratory of Natural Medicines
- Department of Natural Medicinal Chemistry
- China Pharmaceutical University
- Nanjing 210009
- People's Republic of China
| | - Ling-Yi Kong
- State Key Laboratory of Natural Medicines
- Department of Natural Medicinal Chemistry
- China Pharmaceutical University
- Nanjing 210009
- People's Republic of China
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265
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Zhu H, Chen C, Yang J, Li XN, Liu J, Sun B, Huang SX, Li D, Yao G, Luo Z, Li Y, Zhang J, Xue Y, Zhang Y. Bioactive Acylphloroglucinols with Adamantyl Skeleton from Hypericum sampsonii. Org Lett 2014; 16:6322-5. [PMID: 25453445 DOI: 10.1021/ol5030579] [Citation(s) in RCA: 89] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Hucheng Zhu
- Hubei
Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation,
School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Chunmei Chen
- Hubei
Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation,
School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Jing Yang
- State
Key Laboratory of Phytochemistry and Plant Resources in West China,
Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650204, China
- Shanghai
Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
| | - Xiao-Nian Li
- State
Key Laboratory of Phytochemistry and Plant Resources in West China,
Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650204, China
| | - Junjun Liu
- Hubei
Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation,
School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Bin Sun
- Hubei
Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation,
School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Sheng-Xiong Huang
- State
Key Laboratory of Phytochemistry and Plant Resources in West China,
Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650204, China
| | - Dongyan Li
- Tongji
Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Guangmin Yao
- Hubei
Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation,
School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Zengwei Luo
- Hubei
Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation,
School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Yan Li
- State
Key Laboratory of Phytochemistry and Plant Resources in West China,
Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650204, China
| | - Jinwen Zhang
- Tongji
Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Yongbo Xue
- Hubei
Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation,
School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Yonghui Zhang
- Hubei
Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation,
School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
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266
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Yang YI, Jung SH, Lee KT, Choi JH. 8,8'-Bieckol, isolated from edible brown algae, exerts its anti-inflammatory effects through inhibition of NF-κB signaling and ROS production in LPS-stimulated macrophages. Int Immunopharmacol 2014; 23:460-8. [PMID: 25261704 DOI: 10.1016/j.intimp.2014.09.019] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2014] [Revised: 08/28/2014] [Accepted: 09/16/2014] [Indexed: 12/30/2022]
Abstract
Ecklonia cava (E. cava) is an abundant brown alga that contains high levels of phlorotannins, which are unique marine polyphenolic compounds. It has been suggested that E. cava phlorotannins exert anti-inflammatory effects. However, the anti-inflammatory effects and underlying molecular mechanism exerted by 8,8'-bieckol isolated from E. cava have not been reported. Thus, in this study, we examined the anti-inflammatory effects of 8,8'-bieckol on lipopolysaccharide (LPS)-stimulated primary macrophages and RAW 264.7 macrophages. We found that 8,8'-bieckol suppressed key inflammatory mediator [i.e., nitric oxide (NO) and prostaglandin E2 (PGE2)] production in both primary and RAW 264.7 macrophages. 8,8'-Bieckol inhibited NO by suppressing LPS-induced expression of inducible nitric oxide synthase (iNOS) at the mRNA and protein levels in primary macrophages and RAW 264.7 cells. In addition, 8,8'-bieckol decreased the production and mRNA expression of the inflammatory cytokine interleukin-6 (IL-6), but not tumor necrosis factor (TNF)-α, in RAW 264.7 cells. Moreover, 8,8'-bieckol treatment diminished transactivation of nuclear factor-kappa B (NF-κB) and nuclear translocation of the NF-κB p65 subunit and suppressed LPS-induced intracellular reactive oxygen species (ROS) production in macrophages. Furthermore, 8,8'-bieckol markedly reduced mortality in LPS-induced septic mice. Taken together, these data indicate that the anti-inflammatory properties of 8,8'-bieckol are associated with the suppression of NO, PGE2, and IL-6 via negative regulation of the NF-κB pathway and ROS production in LPS-stimulated RAW 264.7 cells. Moreover, 8,8'-bieckol protects mice from endotoxin shock.
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Affiliation(s)
- Yeong-In Yang
- Department of Life & Nanopharmaceutical Science, Kyung Hee University, Seoul, South Korea; Department of Oriental Pharmaceutical Science, Kyung Hee University, Seoul, South Korea
| | - Seung-Hyun Jung
- Department of Life & Nanopharmaceutical Science, Kyung Hee University, Seoul, South Korea; Department of Oriental Pharmaceutical Science, Kyung Hee University, Seoul, South Korea
| | - Kyung-Tae Lee
- Department of Life & Nanopharmaceutical Science, Kyung Hee University, Seoul, South Korea
| | - Jung-Hye Choi
- Department of Life & Nanopharmaceutical Science, Kyung Hee University, Seoul, South Korea; Department of Oriental Pharmaceutical Science, Kyung Hee University, Seoul, South Korea.
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267
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Kong CS, Kim H, Seo Y. Edible Brown Alga E
cklonia cava
Derived Phlorotannin-Induced Anti-Adipogenic Activity in Vitro. J Food Biochem 2014. [DOI: 10.1111/jfbc.12093] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Chang-Suk Kong
- Department of Food and Nutrition; College of Medical and Life Science; Silla University; Busan Korea
| | - Haejin Kim
- Division of Marine Environment and Bioscience; Korea Maritime University; Busan 606-791 Korea
| | - Youngwan Seo
- Division of Marine Environment and Bioscience; Korea Maritime University; Busan 606-791 Korea
- Ocean Science & Technology School; Korea Maritime University; Busan 606-791 Korea
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268
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Skillinghaug B, Sköld C, Rydfjord J, Svensson F, Behrends M, Sävmarker J, Sjöberg PJR, Larhed M. Palladium(II)-Catalyzed Desulfitative Synthesis of Aryl Ketones from Sodium Arylsulfinates and Nitriles: Scope, Limitations, and Mechanistic Studies. J Org Chem 2014; 79:12018-32. [DOI: 10.1021/jo501875n] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Bobo Skillinghaug
- Organic
Pharmaceutical Chemistry, Department of Medicinal Chemistry, Uppsala
Biomedical Center, Uppsala University, P. O. Box 574, SE-751 23 Uppsala, Sweden
| | - Christian Sköld
- Organic
Pharmaceutical Chemistry, Department of Medicinal Chemistry, Uppsala
Biomedical Center, Uppsala University, P. O. Box 574, SE-751 23 Uppsala, Sweden
| | - Jonas Rydfjord
- Organic
Pharmaceutical Chemistry, Department of Medicinal Chemistry, Uppsala
Biomedical Center, Uppsala University, P. O. Box 574, SE-751 23 Uppsala, Sweden
| | - Fredrik Svensson
- Organic
Pharmaceutical Chemistry, Department of Medicinal Chemistry, Uppsala
Biomedical Center, Uppsala University, P. O. Box 574, SE-751 23 Uppsala, Sweden
| | - Malte Behrends
- Organic
Pharmaceutical Chemistry, Department of Medicinal Chemistry, Uppsala
Biomedical Center, Uppsala University, P. O. Box 574, SE-751 23 Uppsala, Sweden
| | - Jonas Sävmarker
- Beijer
Laboratory, Department of Medicinal Chemistry, Uppsala Biomedical
Center, Uppsala University, P. O. Box 574, SE-751 23 Uppsala, Sweden
| | - Per J. R. Sjöberg
- Department
of Chemistry, Uppsala University, BMC, Box 599, SE-751 23 Uppsala, Sweden
| | - Mats Larhed
- Department
of Medicinal Chemistry, Science for Life Laboratory, Uppsala Biomedical
Center, Uppsala University, P. O. Box 574, SE-751 23 Uppsala, Sweden
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269
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Diethelm S, Teufel R, Kaysser L, Moore BS. A multitasking vanadium-dependent chloroperoxidase as an inspiration for the chemical synthesis of the merochlorins. Angew Chem Int Ed Engl 2014; 53:11023-6. [PMID: 25147132 PMCID: PMC4226426 DOI: 10.1002/anie.201405696] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2014] [Indexed: 11/10/2022]
Abstract
The vanadium-dependent chloroperoxidase Mcl24 was discovered to mediate a complex series of unprecedented transformations in the biosynthesis of the merochlorin meroterpenoid antibiotics. In particular, a site-selective naphthol chlorination is followed by an oxidative dearomatization/terpene cyclization sequence to build up the stereochemically complex carbon framework of the merochlorins in one step. Inspired by the enzyme reactivity, a chemical chlorination protocol paralleling the biocatalytic process was developed. These chemical studies led to the identification of previously overlooked merochlorin natural products.
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Affiliation(s)
- Stefan Diethelm
- Center for Marine Biotechnology and Biomedicine, Scripps Institution of Oceanography, University of California San Diego, La Jolla, CA 92093
| | - Robin Teufel
- Center for Marine Biotechnology and Biomedicine, Scripps Institution of Oceanography, University of California San Diego, La Jolla, CA 92093
| | - Leonard Kaysser
- Center for Marine Biotechnology and Biomedicine, Scripps Institution of Oceanography, University of California San Diego, La Jolla, CA 92093
| | - Bradley S. Moore
- Center for Marine Biotechnology and Biomedicine, Scripps Institution of Oceanography, University of California San Diego, La Jolla, CA 92093, Homepage: http://scrippsscholars.ucsd.edu/bsmoore. Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California San Diego, La Jolla, CA 92093
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270
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Lefranc A, Gremaud L, Alexakis A. Construction of Bicyclo[3.2.1]octanes with Four Stereogenic Centers by Organocatalytic Domino Michael/Aldol Reaction. Org Lett 2014; 16:5242-5. [DOI: 10.1021/ol502171h] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- A. Lefranc
- Department
of Organic Chemistry, University of Geneva, quai Ernest Ansermet 30, CH-1211 Geneva 4, Switzerland
| | - L. Gremaud
- Department
of Organic Chemistry, University of Geneva, quai Ernest Ansermet 30, CH-1211 Geneva 4, Switzerland
| | - A. Alexakis
- Department
of Organic Chemistry, University of Geneva, quai Ernest Ansermet 30, CH-1211 Geneva 4, Switzerland
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271
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Massaro CF, Smyth TJ, Smyth WF, Heard T, Leonhardt SD, Katouli M, Wallace HM, Brooks P. Phloroglucinols from Anti-Microbial Deposit-Resins of Australian Stingless Bees (Tetragonula carbonaria
). Phytother Res 2014; 29:48-58. [DOI: 10.1002/ptr.5225] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2014] [Revised: 08/07/2014] [Accepted: 08/21/2014] [Indexed: 11/08/2022]
Affiliation(s)
- C. Flavia Massaro
- Genecology Research Centre, Faculty of Science, Health, Education and Engineering; University of the Sunshine Coast; Maroochydore DC Australia
| | | | - W. Franklin Smyth
- School of Pharmacy and Pharmaceutical Sciences; University of Ulster; Coleraine Northern Ireland UK
| | - Tim Heard
- CSIRO Brisbane, Ecosystem Sciences; Brisbane Australia
| | | | - Mohammad Katouli
- Genecology Research Centre, Faculty of Science, Health, Education and Engineering; University of the Sunshine Coast; Maroochydore DC Australia
| | - Helen M. Wallace
- Genecology Research Centre, Faculty of Science, Health, Education and Engineering; University of the Sunshine Coast; Maroochydore DC Australia
| | - Peter Brooks
- Genecology Research Centre, Faculty of Science, Health, Education and Engineering; University of the Sunshine Coast; Maroochydore DC Australia
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272
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Zhang JJ, Yang J, Liao Y, Yang XW, Ma JZ, Xiao QL, Yang LX, Xu G. Hyperuralones A and B, New Acylphloroglucinol Derivatives with Intricately Caged Cores from Hypericum uralum. Org Lett 2014; 16:4912-5. [PMID: 25192496 DOI: 10.1021/ol502425f] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Jing-Jing 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
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Jing Yang
- 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
- Shanghai
Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, P. R. China
| | - Yang Liao
- 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
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Xing-Wei Yang
- 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
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Jun-Zeng Ma
- 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
| | - Qiu-Li Xiao
- 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
| | - Li-Xin Yang
- 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
| | - Gang Xu
- 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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273
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Diethelm S, Teufel R, Kaysser L, Moore BS. A Multitasking Vanadium-Dependent Chloroperoxidase as an Inspiration for the Chemical Synthesis of the Merochlorins. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201405696] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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274
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Azerosides A and B: Two new phloroacetophenone glycosides from the roots of Dorema glabrum Fisch. & C.A. Mey. Med Chem Res 2014. [DOI: 10.1007/s00044-014-1138-2] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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275
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Park MH, Han JS. Padina arborescens extract protects high glucose-induced apoptosis in pancreatic β cells by reducing oxidative stress. Nutr Res Pract 2014; 8:494-500. [PMID: 25324927 PMCID: PMC4198960 DOI: 10.4162/nrp.2014.8.5.494] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2013] [Revised: 03/27/2014] [Accepted: 04/25/2014] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND/OBJECTIVES This study investigated whether Padina arborescens extract (PAE) protects INS-1 pancreatic β cells against glucotoxicity-induced apoptosis. MATERIALS/METHODS Assays, including cell viability, lipid peroxidation, generation of intracellular ROS, NO production, antioxidant enzyme activity and insulin secretion, were conducted. The expressions of Bax, Bcl-2, and caspase-3 proteins in INS-1 cells were evaluated by western blot analysis, and apoptosis/necrosis induced by high glucose was determined by analysis of FITC-Annexin V/PI staining. RESULTS Treatment with high concentrations of glucose induced INS-1 cell death, but PAE at concentrations of 25, 50 or 100 µg/ml significantly increased cell viability. The treatment with PAE dose dependently reduced the lipid peroxidation and increased the activities of antioxidant enzymes reduced by 30 mM glucose, while intracellular ROS levels increased under conditions of 30 mM glucose. PAE treatment improved the secretory responsiveness following stimulation with glucose. The results also demonstrated that glucotoxicity-induced apoptosis is associated with modulation of the Bax/Bcl-2 ratio. When INS-1 cells were stained with Annexin V/PI, we found that PAE reduced apoptosis by glucotoxicity. CONCLUSIONS In conclusion, the present study indicates that PAE protects against high glucose-induced apoptosis in pancreatic β cells by reducing oxidative stress.
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Affiliation(s)
- Mi Hwa Park
- Department of Food and Nutrition, College of Medical and Life Science, Silla University, Busan 617-736, Korea
| | - Ji-Sook Han
- Department of Food Science and Nutrition, Pusan National University, 2, Busandaehak-ro 63beon-gil, Geumjeong-gu, Busan 609-735, Korea
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276
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Karadeniz F, Kang KH, Park JW, Park SJ, Kim SK. Anti-HIV-1 activity of phlorotannin derivative 8,4‴-dieckol from Korean brown alga Ecklonia cava. Biosci Biotechnol Biochem 2014; 78:1151-8. [PMID: 25229850 DOI: 10.1080/09168451.2014.923282] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
8,4‴-dieckol is a natural product which has been isolated from brown alga, Ecklonia cava. This polyphenolic compound is a phlorotannin derivative with a broad range of bioactivities. Its inhibitory activity on human immunodeficiency virus type-1 (HIV-1) was tested and the results indicated that 8,4‴-dieckol inhibited HIV-1 induced syncytia formation, lytic effects, and viral p24 antigen production at noncytotoxic concentrations. Furthermore, it was found that 8,4‴-dieckol selectively inhibited the activity of HIV-1 reverse trancriptase (RT) enzyme with 91% inhibition ratio at the concentration of 50 μM. HIV-1 entry was also inhibited by 8,4‴-dieckol. According to data from this study, 8,4‴-dieckol is an effective compound against HIV-1 with high potential for further studies. These results suggest that it might be used as a drug candidate for the development of new generation therapeutic agents, although further studies on the mechanism of inhibition should be addressed.
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Affiliation(s)
- Fatih Karadeniz
- a Marine Bioprocess Research Center , Pukyong National University , Busan , Republic of Korea
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277
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Mahamodo S, Rivière C, Neut C, Abedini A, Ranarivelo H, Duhal N, Roumy V, Hennebelle T, Sahpaz S, Lemoine A, Razafimahefa D, Razanamahefa B, Bailleul F, Andriamihaja B. Antimicrobial prenylated benzoylphloroglucinol derivatives and xanthones from the leaves of Garcinia goudotiana. PHYTOCHEMISTRY 2014; 102:162-168. [PMID: 24690454 DOI: 10.1016/j.phytochem.2014.03.006] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/08/2014] [Revised: 03/03/2014] [Accepted: 03/06/2014] [Indexed: 06/03/2023]
Abstract
Bioassay-guided fractionation using antimicrobial assay of the crude acetonic extract of Garcinia goudotiana leaves and of its five partitions led to the isolation of two new prenylated benzoylphloroglucinol derivatives, goudotianone 1 (1) and goudotianone 2 (2), in addition to two known compounds including one xanthone, 1,3,7-trihydroxy-2-isoprenylxanthone (3), and one triterpenoid, friedelin (4). Their structures were elucidated on the basis of different spectroscopic methods, including extensive 1D- and 2D-NMR spectroscopy and mass spectrometry. The crude acetonic extract, the methylene chloride and ethyl acetate partitions, and some tested compounds isolated from this species (1-3) demonstrated selective significant antimicrobial activities against Gram-positive bacteria, in particular Staphylococcus lugdunensis, Enterococcus faecalis and Mycobacterium smegmatis. The potential cytotoxic activities of these extracts and compounds were evaluated against human colon carcinoma HT29 and human fetal lung fibroblast MRC5 cells.
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Affiliation(s)
- Sania Mahamodo
- Laboratoire de Chimie Appliquée aux Substances Naturelles, Faculté des Sciences, Université d'Antananarivo, BP 566, Antananarivo 101, Madagascar; Institut Régional de Recherche en Agroalimentaire et Biotechnologie: Charles Viollette, EA1026, Université Lille 2, F-59000 Lille, France; EA GRIIOT, EA4481, Laboratoire de pharmacognosie, UFR Pharmacie, Université Lille 2, F-59000 Lille, France
| | - Céline Rivière
- Institut Régional de Recherche en Agroalimentaire et Biotechnologie: Charles Viollette, EA1026, Université Lille 2, F-59000 Lille, France; EA GRIIOT, EA4481, Laboratoire de pharmacognosie, UFR Pharmacie, Université Lille 2, F-59000 Lille, France.
| | - Christel Neut
- INSERM U995, UFR Pharmacie, Université Lille 2, F-59000 Lille, France
| | - Amin Abedini
- Institut Régional de Recherche en Agroalimentaire et Biotechnologie: Charles Viollette, EA1026, Université Lille 2, F-59000 Lille, France; EA GRIIOT, EA4481, Laboratoire de pharmacognosie, UFR Pharmacie, Université Lille 2, F-59000 Lille, France
| | | | - Nathalie Duhal
- CUMA, UFR Pharmacie, Université Lille 2, F-59000 Lille, France
| | - Vincent Roumy
- Institut Régional de Recherche en Agroalimentaire et Biotechnologie: Charles Viollette, EA1026, Université Lille 2, F-59000 Lille, France; EA GRIIOT, EA4481, Laboratoire de pharmacognosie, UFR Pharmacie, Université Lille 2, F-59000 Lille, France
| | - Thierry Hennebelle
- Institut Régional de Recherche en Agroalimentaire et Biotechnologie: Charles Viollette, EA1026, Université Lille 2, F-59000 Lille, France; EA GRIIOT, EA4481, Laboratoire de pharmacognosie, UFR Pharmacie, Université Lille 2, F-59000 Lille, France
| | - Sevser Sahpaz
- Institut Régional de Recherche en Agroalimentaire et Biotechnologie: Charles Viollette, EA1026, Université Lille 2, F-59000 Lille, France; EA GRIIOT, EA4481, Laboratoire de pharmacognosie, UFR Pharmacie, Université Lille 2, F-59000 Lille, France
| | - Amélie Lemoine
- EA GRIIOT, EA4481, Laboratoire de pharmacognosie, UFR Pharmacie, Université Lille 2, F-59000 Lille, France
| | - Dorothée Razafimahefa
- Laboratoire de Chimie Appliquée aux Substances Naturelles, Faculté des Sciences, Université d'Antananarivo, BP 566, Antananarivo 101, Madagascar
| | - Bakonirina Razanamahefa
- Laboratoire de Chimie Appliquée aux Substances Naturelles, Faculté des Sciences, Université d'Antananarivo, BP 566, Antananarivo 101, Madagascar
| | - François Bailleul
- Institut Régional de Recherche en Agroalimentaire et Biotechnologie: Charles Viollette, EA1026, Université Lille 2, F-59000 Lille, France; EA GRIIOT, EA4481, Laboratoire de pharmacognosie, UFR Pharmacie, Université Lille 2, F-59000 Lille, France
| | - Bakolinirina Andriamihaja
- Laboratoire de Chimie Appliquée aux Substances Naturelles, Faculté des Sciences, Université d'Antananarivo, BP 566, Antananarivo 101, Madagascar
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278
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Bellavance G, Barriault L. Total syntheses of hyperforin and papuaforins A-C, and formal synthesis of nemorosone through a gold(I)-catalyzed carbocyclization. Angew Chem Int Ed Engl 2014; 53:6701-4. [PMID: 24838522 DOI: 10.1002/anie.201403939] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2014] [Revised: 04/24/2014] [Indexed: 11/07/2022]
Abstract
The remarkable biological activities of polyprenylated polycyclic acylphloroglucinols (PPAPs) combined with their highly decorated bicyclo[3.3.1]nonane-2,4,9-trione frameworks have inspired synthetic organic chemists over the last decade. The concise total syntheses of four natural products PPAPs; hyperforin and papuaforins A-C, and the formal synthesis of nemorosone are reported. Key to the realization of this strategy is the short and scalable synthesis of densely substituted PPAP scaffolds through a gold(I)-catalyzed 6-endo-dig carbocyclization of cyclic enol ethers for late-stage functionalization.
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Affiliation(s)
- Gabriel Bellavance
- Centre for Catalysis, Research and Innovation, Department of Chemistry, University of Ottawa, 10 Marie Curie, Ottawa, On, K1N 6N5 (Canada)
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279
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Bellavance G, Barriault L. Total Syntheses of Hyperforin and Papuaforins A-C, and Formal Synthesis of Nemorosone through a Gold(I)-Catalyzed Carbocyclization. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201403939] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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280
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Liu RD, Ma J, Yang JB, Wang AG, Su YL. Two new polyprenylated acylphloroglucinols from Hypericum scabrum. JOURNAL OF ASIAN NATURAL PRODUCTS RESEARCH 2014; 16:717-723. [PMID: 24827084 DOI: 10.1080/10286020.2014.917083] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/16/2013] [Accepted: 04/17/2014] [Indexed: 06/03/2023]
Abstract
Two new polyprenylated acylphloroglucinols, (1S,32R,5S,6R,7R)-6-((R)-3,4-di-hydroxy-4-methylpentyl)-2-(2-hydroxypropan-2-yl)-7-isobutyryl-6-methyl-5,9-bis(3-methylbut-2-en-1-yl)-4,5,6,7-tetrahydro-2H-32,7-methanocycloocta[b]furan-8,10(3H)-dione (1) and (4R,5R,7R)-4-((R)-3,4-dihydroxy-4-methylpentyl)-2,2,4-trimethyl-5,7-bis(3-methyl-but-2-en-1-yl)-7-(5-methylhex-4-enoyl)-4,5,6,7-tetrahydrobenzofuran-3(2H)-one (2) were isolated from Hypericum scabrum. The structures were elucidated by means of spectroscopic methods, including MS, IR, NMR, OR, and CD.
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Affiliation(s)
- Rang-Dong Liu
- a 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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281
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Thomas NV, Manivasagan P, Kim SK. Potential matrix metalloproteinase inhibitors from edible marine algae: a review. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2014; 37:1090-100. [PMID: 24780533 DOI: 10.1016/j.etap.2014.04.011] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/29/2013] [Revised: 04/02/2014] [Accepted: 04/06/2014] [Indexed: 05/27/2023]
Abstract
Matrix metalloproteinases are endopeptidases which belong to the group of metalloproteinases that contribute for the extra-cellular matrix degradation, and several tissue remodeling processes. An imbalance in the regulation of these endopeptidases eventually leads to several severe pathological complications like cancers, cardiac, cartilage, and neurological related diseases. Hence inhibitory substances of metalloproteinases (MMPIs) could prove beneficial in the management of above specified pathological conditions. The available synthetic MMPIs that have been reported until now have few shortcomings and thus many of them could not make to the final clinical trials. Hence a growing interest among researchers on screening of MMPIs from different natural resources is evident and especially natural products from marine origin. As there has been an unparalleled contribution of several biologically active compounds from marine resources that have shown profound applications in nutraceuticals, cosmeceuticals, and pharmaceuticals, we have attempted to discuss the various MMPIs from edible sea-weeds.
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Affiliation(s)
- Noel Vinay Thomas
- Marine Biochemistry Laboratory, Department of Chemistry, Pukyong National University, Busan 608-737, Republic of Korea
| | - Panchanathan Manivasagan
- Marine Biochemistry Laboratory, Department of Chemistry, Pukyong National University, Busan 608-737, Republic of Korea
| | - Se-Kwon Kim
- Marine Biochemistry Laboratory, Department of Chemistry, Pukyong National University, Busan 608-737, Republic of Korea; Marine Bioprocess Research Center, Pukyong National University, Busan 608-737, Republic of Korea.
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282
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Yang XW, Ding Y, Zhang JJ, Liu X, Yang LX, Li XN, Ferreira D, Walker LA, Xu G. New Acylphloroglucinol Derivatives with Diverse Architectures from Hypericum henryi. Org Lett 2014; 16:2434-7. [PMID: 24738888 DOI: 10.1021/ol500808p] [Citation(s) in RCA: 63] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- Xing-Wei Yang
- 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
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Yuanqing Ding
- National
Center for Natural Products Research, Research Institute of Pharmaceutical
Science, Department of Pharmacognosy, and Department of Pharmacology,
School of Pharmacy, University of Mississippi, University, Mississippi 38677, United States
| | - Jing-Jing 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
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Xia 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
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Li-Xin Yang
- 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
| | - 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
| | - Daneel Ferreira
- National
Center for Natural Products Research, Research Institute of Pharmaceutical
Science, Department of Pharmacognosy, and Department of Pharmacology,
School of Pharmacy, University of Mississippi, University, Mississippi 38677, United States
| | - Larry A. Walker
- National
Center for Natural Products Research, Research Institute of Pharmaceutical
Science, Department of Pharmacognosy, and Department of Pharmacology,
School of Pharmacy, University of Mississippi, University, Mississippi 38677, United States
| | - Gang Xu
- 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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283
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Zhang JJ, Yang XW, Ma JZ, Liu X, Yang LX, Yang SC, Xu G. Hypercohones D-G, New Polycyclic Polyprenylated Acylphloroglucinol Type Natural Products from Hypericum cohaerens. NATURAL PRODUCTS AND BIOPROSPECTING 2014; 4:73-79. [PMID: 24859375 PMCID: PMC4004852 DOI: 10.1007/s13659-014-0007-5] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/13/2014] [Accepted: 02/24/2014] [Indexed: 05/30/2023]
Abstract
Four new polycyclic polyprenylated acylphloroglucinol type metabolites, hypercohones D-G (1-4), along with four known analogues (5-8), were isolated from the aerial parts of Hypericum cohaerens. The structures of these isolates were elucidated by extensive spectroscopic methods. The inhibitory activities of these isolates against five human cancer cell lines in vitro were also tested.
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Affiliation(s)
- Jing-Jing Zhang
- 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
- University of Chinese Academy of Sciences, Beijing, 100049 People’s Republic of China
| | - Xing-Wei 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
- University of Chinese Academy of Sciences, Beijing, 100049 People’s Republic of China
| | - Jun-Zeng Ma
- 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
| | - Xia 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
| | - Li-Xin 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
| | - Sheng-Chao Yang
- Institute of Chinese Medicinal Materials, Yunnan Agricultural University, Kunming, 650201 People’s Republic of China
| | - Gang Xu
- 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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284
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Ding YM, Liu Z, Li FQ. Application of a sensitive and accurate LC-MS/MS method for determination of dryocrassin ABBA in rat plasma for a bioavailability study. Biomed Chromatogr 2014; 28:1205-11. [PMID: 24497015 DOI: 10.1002/bmc.3147] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2013] [Revised: 11/30/2013] [Accepted: 01/06/2014] [Indexed: 12/23/2022]
Affiliation(s)
- Ya-Ming Ding
- The Second Hospital of Jilin University; Changchun 130041 People's Republic of China
| | - Zhuo Liu
- Department of General Surgery; The Third Hospital of Jilin University; Changchun 130033 People's Republic of China
| | - Fu-Qiang Li
- Eye Center, The Second Hospital of Jilin University; Changchun 130041 People's Republic of China
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285
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Froissard D, Rapior S, Bessière JM, Fruchier A, Buatois B, Fons F. Volatile Organic Compounds of six French Dryopteris Species: Natural Odorous and Bioactive Resources. Nat Prod Commun 2014. [DOI: 10.1177/1934578x1400900138] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Aerial parts of six Dryopteris species collected in France were investigated for volatile organic compounds (VOC) for the first time. Fifty-three biosynthesized VOC from the shikimic, lipidic and terpenic pathways were identified using gas chromatography/mass spectrometry. Many bioactive polyketide compounds as filicinic derivatives (from 8.5 to 23.5%) and phloroglucinol derivatives (from 8.2 to 53.8%) with various pharmacological activities were detected in high amount from five analysed Dryopteris species, in particular D. oreades and D. borreri, i.e., propionylfilicinic acid (> 10% in D. affinis and D. ardechensis) and 2,6-dihydroxy-4-methoxy-3-methylbutyrophenone (aspidinol) (19.1% and 14.6% in D. oreades and D. borreri, respectively). Several terpenic derivatives with a low odor threshold were identified, i.e., carota-5,8-diene (from 2.5 to 18.4%: floral, woody or fresh bark note), ( E)-nerolidol (> 10% for D. borreri and D. cambrensis; floral or woody odor), α-selinene (> 7% for D. ardechensis; woody-spicy odor), and aristolene (12.8% in D. affinis; flower, sweet odor). The main isoprenoid derivatives were 4-hydroxy-5,6-epoxyionol, 3-oxo-α-ionol and 4-oxo-7,8-dihydro-β-ionone (essentially in D. remota), whereas the main aromatic compound was 4-hydroxy-3-methoxyacetophenone (20.6% and 12.6% in D. cambrensis and D. borreri, respectively) and the main lipid derivative was 1-octen-3-ol with a mushroom-like odor (from 0.4 to 8.3%). Dryopteris species resources are of great interest as a reservoir of odorous and bioactive compounds.
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Affiliation(s)
- Didier Froissard
- Laboratoire de Botanique, Faculté de Pharmacie de Limoges, 2 rue du Docteur Raymond Marcland, F-87025 Limoges Cedex, France
| | - Sylvie Rapior
- Laboratoire de Botanique, Phytochimie et Mycologie, Faculté de Pharmacie (Université Montpellier 1), UMR 5175 CEFE, B.P. 14 491, 15 avenue Charles Flahault, F-34093 Montpellier Cedex 5, France
| | | | - Alain Fruchier
- ENSCM, UMR 5253, 8 Rue de l'Ecole Normale, F-34296 Montpellier Cedex 5, France
| | - Bruno Buatois
- UMR 5175 CEFE, 1919 Route de Mende, F-34293 Montpellier Cedex 5, France
| | - Françoise Fons
- Laboratoire de Botanique, Phytochimie et Mycologie, Faculté de Pharmacie (Université Montpellier 1), UMR 5175 CEFE, B.P. 14 491, 15 avenue Charles Flahault, F-34093 Montpellier Cedex 5, France
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286
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Kumar P, Senthamilselvi S, Govindaraju M. Phloroglucinol-encapsulated starch biopolymer: preparation, antioxidant and cytotoxic effects on HepG2 liver cancer cell lines. RSC Adv 2014. [DOI: 10.1039/c4ra02621g] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
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287
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Tian LW, Xu M, Li XC, Yang CR, Zhu HJ, Zhang YJ. Eucalmaidials A and B, phloroglucinol-coupled sesquiterpenoids from the juvenile leaves of Eucalyptus maideni. RSC Adv 2014. [DOI: 10.1039/c4ra01078g] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Eucalmaidials A and B, representing a new skeleton of phloroglucinol-coupled iphionane, were isolated from the juvenile leaves of Eucalyptus maideni.
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Affiliation(s)
- Li-Wen Tian
- State Key Laboratory of Phytochemistry and Plant Resources in West China
- Kunming Institute of Botany
- Chinese Academy of Sciences
- Kunming 650201, China
| | - Min Xu
- State Key Laboratory of Phytochemistry and Plant Resources in West China
- Kunming Institute of Botany
- Chinese Academy of Sciences
- Kunming 650201, China
| | - Xing-Cong Li
- School of Pharmacy
- The University of Mississippi
- Oxford 38677, USA
| | - Chong-Ren Yang
- State Key Laboratory of Phytochemistry and Plant Resources in West China
- Kunming Institute of Botany
- Chinese Academy of Sciences
- Kunming 650201, China
| | - Hua-Jie Zhu
- State Key Laboratory of Phytochemistry and Plant Resources in West China
- Kunming Institute of Botany
- Chinese Academy of Sciences
- Kunming 650201, China
| | - Ying-Jun Zhang
- 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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288
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Bharate JB, Vishwakarma RA, Bharate SB, Kushwaha M, Gupta AP. QUANTIFICATION OF ANTICANCER POLYISOPRENYLATED BENZOPHENONES GARCINOL AND ISOGARCINOL USING MULTIPLE REACTION MONITORING LC-ESI-MS-MS IN ULTRA-SOUND ASSISTED EXTRACTS OFGARCINIA INDICAFRUITS. J LIQ CHROMATOGR R T 2013. [DOI: 10.1080/10826076.2013.873872] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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289
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Bharate J, Vishwakarma R, Bharate S, Thite T, Kushwaha M, Gupta A. Quantification and validation of two isomeric anticancer compounds, garcinol and isogarcinol, in ultrasound-assisted extracts ofGarcinia indicafruits using high-performance thin-layer chromatography. JPC-J PLANAR CHROMAT 2013. [DOI: 10.1556/jpc.26.2013.6.4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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290
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Santos SA, Vilela C, Freire CS, Neto CP, Silvestre AJ. Ultra-high performance liquid chromatography coupled to mass spectrometry applied to the identification of valuable phenolic compounds from Eucalyptus wood. J Chromatogr B Analyt Technol Biomed Life Sci 2013; 938:65-74. [DOI: 10.1016/j.jchromb.2013.08.034] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2013] [Revised: 08/23/2013] [Accepted: 08/27/2013] [Indexed: 02/02/2023]
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291
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Richard JA. Chemistry and Biology of the Polycyclic Polyprenylated Acylphloroglucinol Hyperforin. European J Org Chem 2013. [DOI: 10.1002/ejoc.201300815] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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292
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Jain SK, Pathania AS, Meena S, Sharma R, Sharma A, Singh B, Gupta BD, Bhushan S, Bharate SB, Vishwakarma RA. Semisynthesis of mallotus B from rottlerin: evaluation of cytotoxicity and apoptosis-inducing activity. JOURNAL OF NATURAL PRODUCTS 2013; 76:1724-1730. [PMID: 24041234 DOI: 10.1021/np400433g] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Mallotus B (2d) is a prenylated dimeric phloroglucinol compound isolated from Mallotus philippensis. There have been no reports on the synthesis or biological activity of this compound. In the present paper, a semisynthetic preparation of mallotus B is reported via base-mediated intramolecular rearrangement of rottlerin (1), which is one of the major constituents of M. philippensis. The homodimer "rottlerone" was also formed as one of the products of this base-mediated intramolecular reaction. Rottlerin (1), along with rottlerone (2c) and mallotus B (2d), was evaluated for cytotoxicity against a panel of cancer cell lines including HEPG2, Colo205, MIAPaCa-2, PC-3, and HL-60 cells. Mallotus B (2d) displayed cytotoxicity for MIAPaCa-2 and HL-60 cells with IC₅₀ values of 9 and 16 μM, respectively. Microscopic studies in HL-60 cells indicated that mallotus B (2d) induces cell cycle arrest at the G1 phase and causes defective cell division. It also induces apoptosis, as evidenced by distinct changes in cell morphology.
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Affiliation(s)
- Shreyans K Jain
- Natural Products Chemistry Division, Indian Institute of Integrative Medicine (CSIR) , Canal Road, Jammu-180001, India
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293
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Kim H, Kong CS, Lee JI, Kim H, Baek S, Seo Y. Evaluation of inhibitory effect of phlorotannins from Ecklonia cava on triglyceride accumulation in adipocyte. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2013; 61:8541-7. [PMID: 23957842 DOI: 10.1021/jf401454m] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
In the present study, a methanolic extract of Ecklonia cava and its solvent-partitioned fractions were evaluated for their antiadipogenic effect in 3T3-L1 adipocytes. One of them, the n-BuOH fraction, effectively reduced lipid accumulation and glucose consumption. In addition, the presence of the n-BuOH fraction in adipocytes suppressed the regulations of adipogenic transcription factors, PPARγ and SREBP1c, and adipogenic specific genes, FABP4, FABP1, FAS, LPL, HSL, and ACS1. Further purification of n-BuOH fractions led to the isolation of six phlorotannins (1-6). The six phlorotannins effectively suppressed triglyceride accumulation. Comparative analysis showed that lipid accumulation in adipocytes was dramatically attenuated in the presence of eckstolonol (4).
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Affiliation(s)
- Haejin Kim
- Division of Marine Environment and Bioscience, College of Ocean Science and Technology, Korea Maritime University , Busan 606-791, Republic of Korea
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294
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Zheng C, Wang L, Li J, Wang L, Wang DZ. Ortho-Dearomatization of Phenols Creating All-Carbon Spiro-Bicycles. Org Lett 2013; 15:4046-9. [DOI: 10.1021/ol401863k] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Chao Zheng
- Laboratory of Chemical Genomics, School of Chemical Biology and Biotechnology, Shenzhen Graduate School of Peking University, Shenzhen, China 518055
| | - Lu Wang
- Laboratory of Chemical Genomics, School of Chemical Biology and Biotechnology, Shenzhen Graduate School of Peking University, Shenzhen, China 518055
| | - Jingjie Li
- Laboratory of Chemical Genomics, School of Chemical Biology and Biotechnology, Shenzhen Graduate School of Peking University, Shenzhen, China 518055
| | - Leifeng Wang
- Laboratory of Chemical Genomics, School of Chemical Biology and Biotechnology, Shenzhen Graduate School of Peking University, Shenzhen, China 518055
| | - David Zhigang Wang
- Laboratory of Chemical Genomics, School of Chemical Biology and Biotechnology, Shenzhen Graduate School of Peking University, Shenzhen, China 518055
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295
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Kim SM, Kang SW, Jeon JS, Jung YJ, Kim WR, Kim CY, Um BH. Determination of major phlorotannins in Eisenia bicyclis using hydrophilic interaction chromatography: seasonal variation and extraction characteristics. Food Chem 2013; 138:2399-406. [PMID: 23497901 DOI: 10.1016/j.foodchem.2012.11.057] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2011] [Revised: 04/17/2012] [Accepted: 11/09/2012] [Indexed: 11/26/2022]
Abstract
In this study, a hydrophilic interaction chromatography (HILIC) condition was developed for the simultaneous determination of five major phlorotannins from an extract of Eisenia bicyclis (Kjellman) Setchell with good linearity (r(2)>0.999). Based on this method, the seasonal variations and extraction characteristics, in terms of total extraction yield and the content of the phlorotannins, were investigated under various extraction conditions. In results, the yields and phlorotannins were increased two-to-four times in summer (June-October) and then, were decreased to normal levels in winter (November-March). In the extraction of E. bicyclis, ethanol percentage in water, extraction time and washing time significantly affected the yield of the extract and the phlorotannins, whereas the temperature and the sample/solvent ratio impacted the extraction to a lesser degree. These results will be useful information in the application of this macroalga in the commercial areas related to nutraceuticals, pharmaceuticals, and cosmeceuticals.
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Affiliation(s)
- Sang Min Kim
- Functional Food Center, Korea Institute of Science and Technology, Gangneung Institute, Gangneung, Gangwon-do 210-340, Republic of Korea
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296
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Balboa EM, Conde E, Moure A, Falqué E, Domínguez H. In vitro antioxidant properties of crude extracts and compounds from brown algae. Food Chem 2013; 138:1764-85. [PMID: 23411309 DOI: 10.1016/j.foodchem.2012.11.026] [Citation(s) in RCA: 220] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2012] [Revised: 11/02/2012] [Accepted: 11/06/2012] [Indexed: 01/03/2023]
Abstract
Research on the bioactives from seaweeds has increased in recent years. Antioxidant activity is one of the most studied, due to the interest of these compounds both as preservatives and protectors against oxidation in food and cosmetics and also due to their health implications, mainly in relation to their potential as functional ingredients. Brown algae present higher antioxidant potential in comparison with red and green families and contain compounds not found in terrestrial sources. In vitro antioxidant chemical methods, used as a first approach to evaluate potential agents to protect from lipid oxidation in foods, confirmed that the brown algae crude extracts, fractions and pure components are comparatively similar or superior to synthetic antioxidants. Particular emphasis on the fucoidan and phlorotannin polymeric fractions is given, considering variations associated with the species, collection area, season, and extraction and purification technologies.
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Affiliation(s)
- Elena M Balboa
- Departamento de Enxeñería Química, Universidade de Vigo (Campus Ourense), Edificio Politécnico, As Lagoas, 32004 Ourense, Spain
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297
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Bharate SB, Mudududdla R, Sharma R, Vishwakarma RA. The first method for C-devinylation of aromatic systems. Tetrahedron Lett 2013. [DOI: 10.1016/j.tetlet.2013.03.064] [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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298
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Li XJ, Yu HM, Gao C, Zu YG, Wang W, Luo M, Gu CB, Zhao CJ, Fu YJ. Application of ionic liquid-based surfactants in the microwave-assisted extraction for the determination of four main phloroglucinols from Dryopteris fragrans. J Sep Sci 2013; 35:3600-8. [PMID: 23225724 DOI: 10.1002/jssc.201200603] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2012] [Revised: 08/11/2012] [Accepted: 08/21/2012] [Indexed: 11/11/2022]
Abstract
An ionic liquid-based surfactant combined with microwave-assisted extraction method, followed by RP-HPLC-diode array detection (DAD) with a core shell column, was successfully applied in extracting and quantifying four major phloroglucinols from Dryopteris fragrans. Eight ionic liquids with different cation and anion were investigated, and 1-octyl-3-methylimidazolium bromide presented the best relative extraction efficiency for four phloroglucinols. The optimum conditions of this method were as follows: ionic liquid concentration 0.75 M, liquid/solid ratio 12:1 mL/g, extraction time 7 min, extraction temperature 50°C, and irradiation power 600 W. The quality analytical parameters of the method were obtained based on the linearity, precision, accuracy, detection, and quantification limits. The recoveries were between 96.90 and 103.5% with standard deviations not higher than 4.7%. Compared with ionic liquid-based heat reflux extraction, ultrasonic-assisted extraction, negative-pressure cavitation extraction, and conventional microwave-assisted extraction, the relative extraction efficiencies of the proposed method for four phloroglucinols increased 1.5-40.4%. The method was successfully applied for the quantification of four major phloroglucinols from D. fragrans. All these results suggest that the developed method represents an excellent alternative for the extraction and quantification of phloroglucinols in other plant materials.
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Affiliation(s)
- Xiao-Juan Li
- Engineering Research Center of Forest Bio-Preparation, Ministry of Education, Northeast Forestry University, Harbin, PR China
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299
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Hierholtzer A, Chatellard L, Kierans M, Akunna JC, Collier PJ. The impact and mode of action of phenolic compounds extracted from brown seaweed on mixed anaerobic microbial cultures. J Appl Microbiol 2013; 114:964-73. [PMID: 23279323 DOI: 10.1111/jam.12114] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2012] [Revised: 12/06/2012] [Accepted: 12/19/2012] [Indexed: 11/28/2022]
Abstract
AIMS This study discusses the effect of phenolic compounds extracted from brown seaweed (phlorotannins) on mixed microbial cultures found in anaerobic systems. METHODS AND RESULTS Assays were conducted with phloroglucinol as the nonpolymerized form of phlorotannin and with phlorotannins extracted from the brown seaweed Laminaria digitata. Electron micrographs revealed that phlorotannins induce significant extra- and intracellular effects upon cells, with the disruption of cell membranes observed with most micro-organisms. Microscopy results were further confirmed by cell membrane leakage assays demonstrating that phloroglucinol strongly affects cell membrane permeability. However, cell membrane leakage could not be observed with phlorotannins as the cell suspension immediately started to coagulate and impaired spectrophotometric measurements. CONCLUSIONS Results suggest that the bactericidal activity of phlorotannins is a function of the level of polymerization of the compounds. By monitoring intermediary compounds during the anaerobic digestion of phlorotannins, it was also found that higher energy consumption is required by micro-organisms for survival under stress induced by phlorotannins. SIGNIFICANCE AND IMPACT OF THE STUDY The successful anaerobic degradation of brown seaweed is thus likely to be dependant on the concentration of phenolic compounds present and their bactericidal effect on micro-organisms. This is the first article to posit a probable mode of action for the antimicrobial effect of phlorotannins.
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Affiliation(s)
- A Hierholtzer
- Urban Water Technology Centre, School of Contemporary Sciences, University of Abertay Dundee, Dundee, UK
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300
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Lee SH, Jeon YJ. Anti-diabetic effects of brown algae derived phlorotannins, marine polyphenols through diverse mechanisms. Fitoterapia 2013; 86:129-36. [PMID: 23466874 DOI: 10.1016/j.fitote.2013.02.013] [Citation(s) in RCA: 128] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2013] [Revised: 02/20/2013] [Accepted: 02/24/2013] [Indexed: 11/26/2022]
Abstract
Marine algae are popular and abundant food ingredients mainly in Asian countries, and also well known for their health beneficial effects due to the presence of biologically active components. The marine algae have been studied for biologically active components and phlorotannins, marine polyphenols are among them. Among marine algae, brown algae have extensively studied for their potential anti-diabetic activities. Majority of the investigations on phlorotannins derived from brown algae have exhibited their various anti-diabetic mechanisms such as α-glucosidase and α-amylase inhibitory effect, glucose uptake effect in skeletal muscle, protein tyrosine phosphatase 1B (PTP 1B) enzyme inhibition, improvement of insulin sensitivity in type 2 diabetic db/db mice, and protective effect against diabetes complication. In this review, we have made an attempt to discuss the various anti-diabetic mechanisms associated with phlorotannins from brown algae that are confined to in vitro and in vivo.
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Affiliation(s)
- Seung-Hong Lee
- School of Medicine, Jeju National University, Jeju 690-756, Republic of Korea
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