351
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Mammino L, Kabanda MM. A Computational Study of the Effects of Different Solvents on the Characteristics of the Intramolecular Hydrogen Bond in Acylphloroglucinols. J Phys Chem A 2009; 113:15064-77. [DOI: 10.1021/jp905180c] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/07/2022]
Affiliation(s)
- Liliana Mammino
- Department of Chemistry, University of Venda, P/bag X5050, Thohoyandou 0950, South Africa
| | - Mwadham M. Kabanda
- Department of Chemistry, University of Venda, P/bag X5050, Thohoyandou 0950, South Africa
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352
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Zubia M, Fabre MS, Kerjean V, Lann KL, Stiger-Pouvreau V, Fauchon M, Deslandes E. Antioxidant and antitumoural activities of some Phaeophyta from Brittany coasts. Food Chem 2009. [DOI: 10.1016/j.foodchem.2009.03.025] [Citation(s) in RCA: 165] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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353
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Antioxidant activities in vitro of ethanol extract from brown seaweed Sargassum pallidum. Eur Food Res Technol 2009. [DOI: 10.1007/s00217-009-1147-4] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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354
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Tian LW, Zhang YJ, Wang YF, Lai CC, Yang CR. Eucalmaidins A-E, (+)-oleuropeic acid derivatives from the fresh leaves of Eucalyptus maideni. JOURNAL OF NATURAL PRODUCTS 2009; 72:1608-1611. [PMID: 19778089 DOI: 10.1021/np900290s] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Five new (+)-oleuropeic acid derivatives, eucalmaidins A-E (1-5), together with 12 known compounds (6-17), were isolated from the fresh leaves of Eucalyptus maideni. Structures of the new compounds were determined on the basis of spectroscopic analyses (HSQC, HMBC, and (1)H-(1)H COSY), chemical degradation, and enzymatic hydrolysis. Of the tested compounds, only quercetin showed slight anti-herpes simplex virus 1 (HSV-1) activity in vitro.
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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, People's Republic of China
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355
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Carroll AR, Suraweera L, King G, Rali T, Quinn RJ. Guttiferones O and P, prenylated benzophenone MAPKAPK-2 inhibitors from Garcinia solomonensis. JOURNAL OF NATURAL PRODUCTS 2009; 72:1699-1701. [PMID: 19681589 DOI: 10.1021/np900246t] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Two prenylated benzophenones, guttiferones O (1) and P (2), were isolated from the stem bark of the Papua New Guinean plant Garcina solomonensis. The structures of these compounds and their relative configurations were determined by spectroscopic methods. Both compounds inhibited the phosphorylation of the synthetic biotinylated peptide substrate KKLNRTLSVA by the serine/threonine protein kinase MAPKAPK-2 with IC(50) values of 22.0 microM.
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Affiliation(s)
- Anthony R Carroll
- Eskitis Institute, Griffith University, Brisbane, Queensland 4111, Australia
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356
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357
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Singh IP, Sidana J, Bansal P, Foley WJ. Phloroglucinol compounds of therapeutic interest: global patent and technology status. Expert Opin Ther Pat 2009; 19:847-66. [DOI: 10.1517/13543770902916614] [Citation(s) in RCA: 60] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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358
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Li Y, Qian ZJ, Ryu B, Lee SH, Kim MM, Kim SK. Chemical components and its antioxidant properties in vitro: an edible marine brown alga, Ecklonia cava. Bioorg Med Chem 2009; 17:1963-73. [PMID: 19201199 DOI: 10.1016/j.bmc.2009.01.031] [Citation(s) in RCA: 215] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2008] [Revised: 01/14/2009] [Accepted: 01/15/2009] [Indexed: 10/21/2022]
Abstract
Seven phlorotannins were isolated and characterized from an edible marine brown alga Ecklonia cava (EC), along with three common sterol derivatives (fucosterol, ergosterol, and cholesterol) according to the comprehensive spectral analysis of MS and NMR data. Compounds 5 (7-phloro eckol) and 7 (6,6'-bieckoll) of phlorotannin derivatives were obtained for the first time with the high yields. No reports of compound 3 (Fucodiphloroethol G) was published up to date. The antioxidant properties of all phlorotannins were assessed by total antioxidant activity in a linoleic acid model, free radicals scavenging assay using electron spin resonance spectrometry (ESR) technique, cellular reactive oxygen species (ROS) assay by DCFH-DA, membrane protein oxidation assay; measurement of cellular glutathione (GSH) level in RAW264.7 cell line, and myeloperoxidase (MPO) assay in HL-60 cell line. The results revealed that all phlorotannins had antioxidant properties in vitro, especially, compounds 7 (6,6'-bieckol), 6, and 3 showed the significant activities compared to the other phlorotannins. Furthermore, the structure-activity relationship (SAR) was discussed based on the structural differences of the tested phlorotannins which have polymeriged phloroglucinal units with diverse skeletons and linkages. It could be suggested that phlorotaninns from this genus would be more potential candidates for the development of unique natural antioxidants for further industrial applications as functional foods, cosmetics and pharmaceuticals. As well as our results makes it clear to understand the reason behind the use of EC as traditional folk herb for a long history.
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Affiliation(s)
- Yong Li
- Marine Bioprocess Research Center, Pukyong National University, Busan, Republic of Korea
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359
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Takagi R, Inoue Y, Ohkata K. Construction of the Adamantane Core of Plukenetione-Type Polycyclic Polyprenylated Acylphloroglucinols. J Org Chem 2008; 73:9320-5. [DOI: 10.1021/jo801595y] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Ryukichi Takagi
- Department of Chemistry, Graduate School of Science, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima 739-8526, Japan
| | - Yuta Inoue
- Department of Chemistry, Graduate School of Science, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima 739-8526, Japan
| | - Katsuo Ohkata
- Department of Chemistry, Graduate School of Science, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima 739-8526, Japan
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360
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Bharate SB, Rodge A, Joshi RK, Kaur J, Srinivasan S, Kumar SS, Kulkarni-Almeida A, Balachandran S, Balakrishnan A, Vishwakarma RA. Discovery of diacylphloroglucinols as a new class of GPR40 (FFAR1) agonists. Bioorg Med Chem Lett 2008; 18:6357-61. [PMID: 18993064 DOI: 10.1016/j.bmcl.2008.10.085] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2008] [Revised: 09/26/2008] [Accepted: 10/20/2008] [Indexed: 10/21/2022]
Abstract
In this letter, we report discovery of diacylphloroglucinol compounds as a new class of GPR40 (FFAR1) agonists. Several diacylphloroglucinols with varying length of acyl functionality and substitution on aromatic hydroxyls were synthesized and evaluated for GPR40 agonism using functional calcium-flux assay. Out of 17 compounds evaluated, 14, 17, 19 and 25 exhibited good GPR40 agonistic activity with EC(50) values ranging from 0.07 to 8 microM (pEC(50) 7.12-5.09), respectively, with maximal agonistic response of 84-102%.
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Affiliation(s)
- Sandip B Bharate
- Department of Medicinal Chemistry, Piramal Life Sciences Limited, 1 Nirlon Complex, Off Western Express Highway, Goregaon (E), Mumbai 400063, India
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361
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Artan M, Li Y, Karadeniz F, Lee SH, Kim MM, Kim SK. Anti-HIV-1 activity of phloroglucinol derivative, 6,6'-bieckol, from Ecklonia cava. Bioorg Med Chem 2008; 16:7921-6. [PMID: 18693022 DOI: 10.1016/j.bmc.2008.07.078] [Citation(s) in RCA: 124] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2008] [Revised: 07/24/2008] [Accepted: 07/25/2008] [Indexed: 11/18/2022]
Abstract
Ecklonia cava (EC), which is an edible marine brown alga with a broad range of bioactivities, belongs to the family of Laminariaceae. The bioactive 6,6'-bieckol, one of the main phloroglucinol derivatives naturally occurred from this genus, was isolated and characterized by NMR techniques. For the first time, human immunodeficiency virus type-1 (HIV-1) inhibitory activity of 6,6'-bieckol showed wild inhibition against HIV-1 induced syncytia formation (EC(50) 1.72 microM), lytic effects (EC(50) 1.23 microM), and viral p24 antigen production (EC(50) 1.26 microM), respectively. This result was strongly and clearly supported by the further investigation also, which 6,6'-bieckol selectively inhibited the activity of HIV-1 reverse transcriptase (RT) enzyme with EC(50) of 1.07 microM, as well as HIV-1 entry. Moreover, unlike most of other tannins, 6,6'-bieckol exhibited no cytotoxicity at concentrations which inhibited HIV-1 replication almost completely. Thus, it can be suggested that the potentially effective 6,6'-bieckol might be employed as a drug candidate for development of new generation therapeutic agents against HIV.
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Affiliation(s)
- Murat Artan
- Department of Chemistry, Pukyong National University, Busan 608-737, Republic of Korea
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362
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Hillwig ML, Hammer KDP, Birt DF, Wurtele ES. Characterizing the metabolic fingerprint and anti-inflammatory activity of Hypericum gentianoides. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2008; 56:4359-66. [PMID: 18512936 PMCID: PMC2701219 DOI: 10.1021/jf800411v] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
In this paper we characterize the metabolic fingerprint and first reported anti-inflammatory activity of Hypericum gentianoides. H. gentianoides has a history of medical use by Native Americans, but it has been studied very little for biological activity. High-performance liquid chromatography (HPLC) and liquid chromatography-electrospray ionization-mass spectrometry (LC-ESI-MS) analyses of a methanol extract show that H. gentianoides contains a family of over nine related compounds that have retention times, mass spectra, and a distinctive UV absorption spectra characteristic of certain acyl-phloroglucinols. These metabolites are abundant relative to other secondary products present in H. gentianoides, accounting for approximately 0.2 g per gram of dry plant tissue. H. gentianoides methanol extracts and a specific semipreparative HPLC fraction from these extracts containing the putative acyl-phloroglucinols reduce prostaglandin E 2 synthesis in mammalian macrophages.
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Affiliation(s)
- Matthew L. Hillwig
- To whom correspondence should be addressed. Phone: (515) 294-3509. E-mail: or
| | | | | | - Eve Syrkin Wurtele
- To whom correspondence should be addressed. Phone: (515) 294-3509. E-mail: or
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363
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Rodrigues E, Gianfratti B, Tabach R, Negri G, Mendes FR. Preliminary investigation of the central nervous system effects of ‘Tira-capeta’ (Removing the Devil), a cigarette used by some Quilombolas living in Pantanal Wetlands of Brazil. Phytother Res 2008; 22:1248-55. [DOI: 10.1002/ptr.2474] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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364
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Schouten A, Maksimova O, Cuesta-Arenas Y, van den Berg G, Raaijmakers JM. Involvement of the ABC transporter BcAtrB and the laccase BcLCC2 in defence of Botrytis cinerea against the broad-spectrum antibiotic 2,4-diacetylphloroglucinol. Environ Microbiol 2008; 10:1145-57. [DOI: 10.1111/j.1462-2920.2007.01531.x] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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365
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Mammino L, Kabanda MM. A computational study of the interactions of the phloroglucinol molecule with water. ACTA ACUST UNITED AC 2008. [DOI: 10.1016/j.theochem.2007.12.020] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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366
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Raikar SB, Nuhant P, Delpech B, Marazano C. Synthesis of Polyprenylated Benzoylphloroglucinols by Regioselective Prenylation of Phloroglucinol in an Aqueous Medium. European J Org Chem 2008. [DOI: 10.1002/ejoc.200701009] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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367
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Gey C, Kyrylenko S, Hennig L, Nguyen LHD, Büttner A, Pham HD, Giannis A. Phloroglucinol derivatives guttiferone G, aristoforin, and hyperforin: inhibitors of human sirtuins SIRT1 and SIRT2. Angew Chem Int Ed Engl 2007; 46:5219-22. [PMID: 17516596 DOI: 10.1002/anie.200605207] [Citation(s) in RCA: 81] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Claudia Gey
- Institut für Organische Chemie, Universität Leipzig, Johannisallee 29, 04103 Leipzig, Germany
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368
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Brajeul S, Delpech B, Marazano C. Sulfonium salts as prenyl, geranyl, and isolavandulyl transfer agents towards benzoylphloroglucinol derivatives. Tetrahedron Lett 2007. [DOI: 10.1016/j.tetlet.2007.06.042] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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369
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Gey C, Kyrylenko S, Hennig L, Nguyen LH, Büttner A, Pham H, Giannis A. Phloroglucinolderivate Guttiferon G, Aristoforin und Hyperforin: Inhibitoren der menschlichen Sirtuine SIRT1 und SIRT2. Angew Chem Int Ed Engl 2007. [DOI: 10.1002/ange.200605207] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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370
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