1
|
Rodríguez II, Rodríguez AD, Barnes CL. Isolation, Structural Analysis and Biological Activity Assays of Biselisabethoxanes A and B: Two Dissymmetric Bis-Diterpenes from the Southwestern Caribbean Sea Gorgonian Coral Pseudopterogorgia elisabethae. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27227879. [PMID: 36431975 PMCID: PMC9694721 DOI: 10.3390/molecules27227879] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/20/2022] [Revised: 11/07/2022] [Accepted: 11/11/2022] [Indexed: 11/17/2022]
Abstract
Two novel dissymmetric diterpenoids, biselisabethoxanes A and B (1 and 2), were isolated from the hexane extracts of the gorgonian coral Pseudopterogorgia elisabethae. Biselisabethoxane A (1) represents the first example of a marine-derived C40 dimer made of two distinct diterpene fragments, whereas biselisabethoxane B (2) is a fused heterodimer stemming from coupling of two amphilectane-based fragments. The structures of 1 and 2 were elucidated based on 1D and 2D NMR spectral data analysis. The molecular structure of 1 was subsequently confirmed by X-ray crystallographic analysis. When evaluated for their inhibitory effects in a series of well-established biological activity assays the isolated compounds were shown to moderately inhibit the growth of Mycobacterium tuberculosis.
Collapse
Affiliation(s)
- Ileana I. Rodríguez
- Department of Chemistry, University of Puerto Rico–Río Piedras Campus, P.O. Box 23346, UPR Station, San Juan, PR 00931, USA
| | - Abimael D. Rodríguez
- Department of Chemistry, University of Puerto Rico–Río Piedras Campus, P.O. Box 23346, UPR Station, San Juan, PR 00931, USA
- Molecular Sciences Research Center, University of Puerto Rico–Río Piedras Campus, 1390 Ponce de León Avenue, San Juan, PR 00926, USA
- Correspondence:
| | - Charles L. Barnes
- Department of Chemistry, University of Missouri-Columbia, Columbia, MO 65211, USA
| |
Collapse
|
2
|
coll toledano J. Pseudopterosins and Seco-Pseudopterosins: Compilation and Revision of Conflicting NMR Data, Names, Numbering Systems and Structural Elucidation. Nat Prod Commun 2022. [DOI: 10.1177/1934578x221079415] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
The present review is focussed on the structural elucidation of the bicyclic and tricyclic diterpenoid title compounds isolated from Pseudopterogorgia species, displaying a direct structural relationship with the biosynthetic precursor GGPP (regular isoprenoid skeletons). A compilation of 1H and 13C NMR spectroscopic data is presented grouped by similar spin systems. Apparent inconsistencies or potential missassignments are discussed, pointing out convenient revisions of data assignment to improve structure correlations. Some hemisynthetic intermediates in the structural elucidation process are included, as well as data of representative synthetic compounds.
Collapse
|
3
|
Ndjoubi KO, Sharma R, Hussein AA. The Potential of Natural Diterpenes Against Tuberculosis: An Updated Review. Curr Pharm Des 2020; 26:2909-2932. [PMID: 32532186 DOI: 10.2174/1381612826666200612163326] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2020] [Accepted: 04/28/2020] [Indexed: 11/22/2022]
Abstract
Every year, 10 million people are affected by tuberculosis (TB). Despite being a preventable and curable disease, 1.5 million people die from TB each year, making it the world's top infectious disease. Many of the frontline antibiotics cause painful and disagreeable side effects. To mitigate the side effects from the use of chemically synthesized or clinical anti-tubercular drugs, there are many research studies focussed on natural products as a source of potential anti-tuberculosis drugs. Among different phytoconstituents, several classes of diterpenoids exert significant antimicrobial effects. This review explores diterpenoids as potential anti-tubercular drugs from natural sources. A total of 204 diterpenoids isolated from medicinal plants and marine species are discussed that inhibit the growth of Mycobacterium tuberculosis. The literature from 1994-2018 is reviewed, and 158 diterpenoids from medicinal plants, as well as 40 diterpenoids from marines, are alluded to have antituberculosis properties. The antitubercular activities discussed in the review indicate that the type of diterpenoids, the Mtb strains, substituents attached to diterpenoids and their position in the diterpenoids general skeleton can change the compounds antimycobacterial inhibitory effects.
Collapse
Affiliation(s)
- Kadidiatou O Ndjoubi
- Chemistry Department, Cape Peninsula University of Technology, Bellville Campus, Symphony Road, 7535 Bellville, South Africa
| | - Rajan Sharma
- Chemistry Department, Cape Peninsula University of Technology, Bellville Campus, Symphony Road, 7535 Bellville, South Africa
| | - Ahmed A Hussein
- Chemistry Department, Cape Peninsula University of Technology, Bellville Campus, Symphony Road, 7535 Bellville, South Africa
| |
Collapse
|
4
|
Molina SL, Forero AM, Ayala FI, Puyana M, Zea S, Castellanos L, Muñoz D, Arboleda G, Sandoval-Hernández AG, Ramos FA. Metabolic Profiling of the Soft Coral Erythropodium caribaeorum (Alcyonacea: Anthothelidae) from the Colombian Caribbean Reveals Different Chemotypes. Mar Drugs 2019; 18:E4. [PMID: 31861453 PMCID: PMC7024379 DOI: 10.3390/md18010004] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2019] [Revised: 10/11/2019] [Accepted: 10/12/2019] [Indexed: 12/23/2022] Open
Abstract
The Caribbean soft coral Erythropodium caribaeorum is a rich source of erythrolides-chlorinated briarane diterpenoids. These compounds have an ecological role as feeding deterrents, with a wide variation in their composition depending on the location where the sample is collected. In Colombia, this soft coral can be found at different locations in the Caribbean Sea including Santa Marta, Islas del Rosario, and Providencia-three environmentally different coral reef areas in the south and southwest Caribbean Sea. In order to evaluate differences in erythrolide composition, the metabolic profiles of samples from each of these locations were analyzed by HPLC-MS. Principal component analysis showed changes in the diterpene composition according to the sample origin. Diterpenes from samples collected at each location were isolated to describe the three chemotypes. The chemotype from Santa Marta was highly diverse, with the new erythrolides W and X together with eight known erythrolides. The sample from Islas del Rosario showed a low diversity chemotype constituted by high amounts of erythrolide A and B. The chemotype from Providencia showed low chemical diversity with only two main compounds-erythrolide V and R. Evaluation of cytotoxic activity against the human cancer cell lines PC-3, MCF7, and A549 showed erythrolides A and B as the more active compounds with IC50 values in the range from 2.45 to 30 μM.
Collapse
Affiliation(s)
- Sandra L. Molina
- Departamento de Química, Facultad de Ciencias, Universidad Nacional de Colombia Sede Bogotá, Av Cra 30 45-03, 111112 Bogotá, Colombia; (S.L.M.); (A.M.F.); (F.I.A.); (L.C.); (D.M.); (A.G.S.-H.)
| | - Abel M. Forero
- Departamento de Química, Facultad de Ciencias, Universidad Nacional de Colombia Sede Bogotá, Av Cra 30 45-03, 111112 Bogotá, Colombia; (S.L.M.); (A.M.F.); (F.I.A.); (L.C.); (D.M.); (A.G.S.-H.)
| | - Farja I. Ayala
- Departamento de Química, Facultad de Ciencias, Universidad Nacional de Colombia Sede Bogotá, Av Cra 30 45-03, 111112 Bogotá, Colombia; (S.L.M.); (A.M.F.); (F.I.A.); (L.C.); (D.M.); (A.G.S.-H.)
| | - Mónica Puyana
- Departamento de Ciencias Biológicas y Ambientales, Facultad de Ciencias Naturales e Ingeniería, Universidad Jorge Tadeo Lozano Sede Bogotá, Cra 4 22-6,1, 110010 Bogotá, Colombia;
| | - Sven Zea
- Instituto de Estudios en Ciencias del Mar-CECIMAR, Universidad Nacional de Colombia Sede Caribe, 470006 Santa Marta, Colombia;
| | - Leonardo Castellanos
- Departamento de Química, Facultad de Ciencias, Universidad Nacional de Colombia Sede Bogotá, Av Cra 30 45-03, 111112 Bogotá, Colombia; (S.L.M.); (A.M.F.); (F.I.A.); (L.C.); (D.M.); (A.G.S.-H.)
| | - Diego Muñoz
- Departamento de Química, Facultad de Ciencias, Universidad Nacional de Colombia Sede Bogotá, Av Cra 30 45-03, 111112 Bogotá, Colombia; (S.L.M.); (A.M.F.); (F.I.A.); (L.C.); (D.M.); (A.G.S.-H.)
- Facultad de Ciencias, Universidad de Ciencias Aplicadas y Ambientales, 111166 Bogotá, Colombia
| | - Gonzalo Arboleda
- Instituto de Genética Humana, Universidad Nacional de Colombia Sede Bogotá, 111112 Bogotá, Colombia;
| | - Adrián G. Sandoval-Hernández
- Departamento de Química, Facultad de Ciencias, Universidad Nacional de Colombia Sede Bogotá, Av Cra 30 45-03, 111112 Bogotá, Colombia; (S.L.M.); (A.M.F.); (F.I.A.); (L.C.); (D.M.); (A.G.S.-H.)
- Instituto de Genética Humana, Universidad Nacional de Colombia Sede Bogotá, 111112 Bogotá, Colombia;
| | - Freddy A. Ramos
- Departamento de Química, Facultad de Ciencias, Universidad Nacional de Colombia Sede Bogotá, Av Cra 30 45-03, 111112 Bogotá, Colombia; (S.L.M.); (A.M.F.); (F.I.A.); (L.C.); (D.M.); (A.G.S.-H.)
| |
Collapse
|
5
|
Pinzón-Espinosa A, Martinez-Matamoros D, Castellanos L, Duque C, Rodríguez J, Jiménez C, Ramos FA. Cereusitin A, a cyclic tetrapeptide from a Bacillus cereus strain isolated from the soft coral Antillogorgia (syn. Pseudopterogorgia) elisabethae. Tetrahedron Lett 2017. [DOI: 10.1016/j.tetlet.2017.01.002] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
|
6
|
Abstract
The 15 published total syntheses of the pseudopterosins are reviewed, with focus on strategic considerations and an emphasis on ring formation.
Collapse
|
7
|
Guignard RF, Petit L, Zard SZ. A Method for the Net Contra-thermodynamic Isomerization of Cyclic Trisubstituted Alkenes. Org Lett 2013; 15:4178-81. [DOI: 10.1021/ol4018744] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Raphaël F. Guignard
- Laboratoire de Synthèse Organique, CNRS UMR 7652 Ecole Polytechnique, 91128 Palaiseau Cedex, France
| | - Laurent Petit
- Laboratoire de Synthèse Organique, CNRS UMR 7652 Ecole Polytechnique, 91128 Palaiseau Cedex, France
| | - Samir Z. Zard
- Laboratoire de Synthèse Organique, CNRS UMR 7652 Ecole Polytechnique, 91128 Palaiseau Cedex, France
| |
Collapse
|
8
|
Lölsberg W, Werle S, Neudörfl JM, Schmalz HG. An Enantioselective Total Synthesis of Helioporins C and E. Org Lett 2012; 14:5996-9. [DOI: 10.1021/ol302898h] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Wibke Lölsberg
- Department of Chemistry, University of Cologne, Greinstrasse 4, 50939 Köln, Germany
| | - Susen Werle
- Department of Chemistry, University of Cologne, Greinstrasse 4, 50939 Köln, Germany
| | - Jörg-Martin Neudörfl
- Department of Chemistry, University of Cologne, Greinstrasse 4, 50939 Köln, Germany
| | - Hans-Günther Schmalz
- Department of Chemistry, University of Cologne, Greinstrasse 4, 50939 Köln, Germany
| |
Collapse
|
9
|
Correa H, Zorro P, Arevalo-Ferro C, Puyana M, Duque C. Possible Ecological Role of Pseudopterosins G and P-U and SECO-Pseudopterosins J and K from the Gorgonian Pseudopterogorgia elisabethae from Providencia Island (SW Caribbean) in Regulating Microbial Surface Communities. J Chem Ecol 2012; 38:1190-202. [DOI: 10.1007/s10886-012-0182-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2012] [Revised: 07/30/2012] [Accepted: 08/10/2012] [Indexed: 11/28/2022]
|
10
|
Berrué F, McCulloch MWB, Kerr RG. Marine diterpene glycosides. Bioorg Med Chem 2011; 19:6702-19. [PMID: 21783368 DOI: 10.1016/j.bmc.2011.06.083] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2011] [Revised: 06/16/2011] [Accepted: 06/28/2011] [Indexed: 10/18/2022]
Abstract
Marine diterpene glycosides (MDGs) respresent a small but highly significant group of the much larger class of marine diterpenes. The three well-studied examples of MDGs are eleutherobins, pseudopterosins and fuscosides, all of which exhibit extremely promising biological activity. The eleutherobins are potent anti-mitotic agents, and the pseudopterosins and fuscosides are potent anti-inflammatory agents. This review discusses the structures and biological activities of these compounds, as well as their biosynthesis and synthesis.
Collapse
Affiliation(s)
- Fabrice Berrué
- Department of Chemistry, University of Prince Edward Island, Charlottetown, PEI, Canada
| | | | | |
Collapse
|
11
|
Cytotoxic and antimicrobial activity of pseudopterosins and seco-pseudopterosins isolated from the octocoral Pseudopterogorgia elisabethae of San Andrés and Providencia Islands (Southwest Caribbean Sea). Mar Drugs 2011; 9:334-43. [PMID: 21556163 PMCID: PMC3083654 DOI: 10.3390/md9030334] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2011] [Revised: 02/24/2011] [Accepted: 02/25/2011] [Indexed: 12/03/2022] Open
Abstract
To expand the potential of pseudopterosins and seco-pseudopterosins isolated from the octocoral Pseudopterogorgia elisabethae of San Andrés and Providencia islands (southwest Caribbean Sea), we report the anti-microbial profile against four pathogenic microorganisms (Staphylococcus aureus, Enterococcus faecalis, Pseudomonas aeruginosa and Candida albicans) and report a more complete cytotoxic profile against five human cells lines (HeLa, PC-3, HCT116, MCF-7 and BJ) for the compounds PsG, PsP, PsQ, PsS, PsT, PsU, 3-O-acetyl-PsU, seco-PsJ, seco-PsK and IMNGD. For the cytotoxic profiles, all compounds evaluated showed moderate and non-selective activity against both tumor and normal cell lines, where PsQ and PsG were the most active compounds (GI50 values between 5.8 μM to 12.0 μM). With respect to their anti-microbial activity the compounds showed good and selective activity against the Gram-positive bacteria, while they did not show activity against the Gram-negative bacterium or yeast. PsU, PsQ, PsS, seco-PsK and PsG were the most active compounds (IC50 2.9–4.5 μM) against S. aureus and PsG, PsU and seco-PsK showed good activity (IC50 3.1–3.8 μM) against E. faecalis, comparable to the reference drug vancomycin (4.2 μM).
Collapse
|
12
|
Abstract
The ocean contains a host of macroscopic life in a great microbial soup. Unlike the terrestrial environment, an aqueous environment provides perpetual propinquity and blurs spatial distinctions. Marine organisms are under a persistent threat of infection by resident pathogenic microbes including bacteria, and in response they have engineered complex organic compounds with antibacterial activity from a diverse set of biological precursors. The diluting effect of the ocean drives the construction of potent molecules that are stable to harsh salty conditions. Members of each class of metabolite-ribosomal and non-ribosomal peptides, alkaloids, polyketides, and terpenes-have been shown to exhibit antibacterial activity. The sophistication and diversity of these metabolites points to the ingenuity and flexibility of biosynthetic processes in Nature. Compared with their terrestrial counterparts, antibacterial marine natural products have received much less attention. Thus, a concerted effort to discover new antibacterials from marine sources has the potential to contribute significantly to the treatment of the ever increasing drug-resistant infectious diseases.
Collapse
Affiliation(s)
- Chambers C. Hughes
- Center for Marine Biotechnology and Biomedicine, Scripps Institution of Oceanography, UCSD, 9500 Gilman Dr. La Jolla, CA 92093-0204 (USA)
| | - William Fenical
- Center for Marine Biotechnology and Biomedicine, Scripps Institution of Oceanography, UCSD, 9500 Gilman Dr. La Jolla, CA 92093-0204 (USA)
| |
Collapse
|
13
|
Flachsmann F, Schellhaas K, Moya CE, Jacobs RS, Fenical W. Synthetic pseudopterosin analogues: A novel class of antiinflammatory drug candidates. Bioorg Med Chem 2010; 18:8324-33. [PMID: 21041093 DOI: 10.1016/j.bmc.2010.09.067] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2010] [Revised: 09/23/2010] [Accepted: 09/27/2010] [Indexed: 11/15/2022]
Abstract
The synthesis and in vivo anti-inflammatory activity of a series of pseudopterosin analogues are presented. Synthetic tricyclic catechol aglycons with different substitution patterns were monofucosylated or -xylosylated. Anti-inflammatory activity was conserved over a wide range of structural modifications. The most active synthetic compound 33 reduced phorbol myristate acetate (PMA)-induced inflammation in the mouse ear by 72% at 50 μg/ear. This corresponds to 80% of the activity of natural pseudopterosin A.
Collapse
Affiliation(s)
- Felix Flachsmann
- Center for Marine Biotechnology and Biomedicine, Scripps Institution of Oceanography, University of California at San Diego, La Jolla, 92093-0204, USA
| | | | | | | | | |
Collapse
|
14
|
Tello E, Castellanos L, Arevalo-Ferro C, Duque C. Cembranoid diterpenes from the Caribbean sea whip Eunicea knighti. JOURNAL OF NATURAL PRODUCTS 2009; 72:1595-1602. [PMID: 19778088 DOI: 10.1021/np9002492] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Three new cembranoid diterpenes, knightol (1), knightol acetate (2), and knightal (3), along with the known asperdiol (4) and asperdiol acetate (5), were isolated as major compounds from the sea whip Eunicea knighti collected from the Colombian Caribbean. The structures and absolute configurations of 1-5 were determined on the basis of spectroscopic analyses and by a combination of chemical and NMR methods, multiple correlations observed in a ROESY experiment, and using the modified Mosher method. Additionally, five semisynthetic compounds, 6-10, obtained during the chemical transformations of the natural compounds are here reported for the first time. All compounds were tested for antimicrobial activity against marine bacteria associated with heavily fouled surfaces and were also screened for antiquorum sensing (QS) activity. Compounds 1, 3, and 8 showed significant antimicrobial activity against bacterial isolates, and 1, 3, 7, and 8 showed excellent anti-QS inhibition activity measured by means of bioluminescence inhibition with biosensor model systems.
Collapse
Affiliation(s)
- Edisson Tello
- Departamento de Quimica, Universidad Nacional de Colombia, Bogota, Colombia
| | | | | | | |
Collapse
|
15
|
Abstract
Covering: 1995 to April 2008. Gorgonian corals continue to provide a wealth of novel structures, many of which exhibit potentially useful biological activity. Notably, the families Briareidae, Gorgoniidae and Plexauridae have been demonstrated to contain a wide variety of natural products including steroids, acetogenins, sesquiterpenes and diterpenes. The most common of the gorgonian natural products are the diterpenes, and the intent of this review is to describe such compounds isolated from gorgonian corals, with a focus on the structures of new compounds as well as their biological activity. There have been developments improving our understanding of the biosynthetic origin of selected diterpenes, and these will also be discussed. This review describes 602 new compounds from 177 articles.
Collapse
Affiliation(s)
- Fabrice Berrue
- Department of Chemistry, Atlantic Veterinary College, University of Prince Edward Island, Charlottetown, Prince Edward Island, C1A 4P3, Canada
| | | |
Collapse
|
16
|
Correa H, Valenzuela AL, Ospina LF, Duque C. Anti-inflammatory effects of the gorgonian Pseudopterogorgia elisabethae collected at the Islands of Providencia and San Andrés (SW Caribbean). JOURNAL OF INFLAMMATION-LONDON 2009; 6:5. [PMID: 19284567 PMCID: PMC2662832 DOI: 10.1186/1476-9255-6-5] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/25/2008] [Accepted: 03/10/2009] [Indexed: 11/10/2022]
Abstract
Background We are reporting for the first time the in vivo anti-inflammatory activity of extracts and fractions, and in vitro anti-inflammatory activity of pure compounds, all isolated from Pseudopterogorgia elisabethae collected at the Providencia (chemotype 1) and San Andrés (chemotype 2) Islands (SW Caribbean). Methods Extracts from P. elisabethae were fractionated on silica gel to yield fractions: F-1 (pseudopterosins PsQ, PsS and PsU) and F-2 (amphilectosins A and B, PsG, PsK, PsP and PsT and seco-pseudopterosins seco-PsJ and seco-PsK) from chemotype 1, and F-3 (elisabethatrienol, 10-acetoxy-9-hydroxy- and 9-acetoxy-10-hydroxy-amphilecta-8,10,12,14-tetraenes (interconverting mixture) and amphilecta-8(13),11,14-triene-9,10-dione) from chemotype 2. By using preparative RP-HPLC and spectroscopic means, we obtained the pure PsG, PsK, PsP, PsQ, PsS, PsT, PsU, seco-PsK and the interconverting mixture of non-glycosylated diterpenes (IMNGD). The anti-inflammatory properties of extracts and fractions were evaluated using in vivo model "12-O-tetradecanoyl-phorbol-acetate (TPA)-induced mouse ear oedema". The activities of pure compounds and of the IMNGD were evaluated using in vitro assays myeloperoxidase (MPO) release (by human polymorphonuclear neutrophils (PMNs)), nitric oxide release (by J-774 cells) and scavenger activity on NO. Results In the in vivo anti-inflammatory assay, extracts and F-3 showed low inhibition levels of inflammation compared to indomethacin, F-1 and F-2. Additionally, we evaluated the MPO release to the inflammation site, and found a marked inhibition of MPO levels by all extracts and fractions, even superior to the inhibition shown by indomethacin. Furthermore, in the MPO in vitro assay, IMNGD, PsQ, PsS, PsT and PsU, exhibited higher inhibition levels compared to dexamethasone and indomethacin. In the NO release in vitro, IMNGD, PsP and PsT were the most potent treatments. Finally, because the PsG, PsP and seco-PsK did not exhibit any NO scavenger activity, they should inhibit the inducible Nitric Oxide Synthase (iNOS) or other routes that influence this enzyme. Alternatively, PsQ, PsS, and PsU did show scavenger activity. Conclusion All results presented contribute to demonstrate that the compounds isolated in this work from P. elisabethae are promising molecules with an interesting anti-inflammatory activity profile. Additionally, the results obtained could provide preliminary insights towards their structure-activity relationship.
Collapse
Affiliation(s)
- Hebelin Correa
- Departamento de Química, Universidad Nacional de Colombia, Cra, 30 N degrees 45 -03, Bogotá D,C, Colombia.
| | | | | | | |
Collapse
|
17
|
Cell cultures from the symbiotic soft coral Sinularia flexibilis. In Vitro Cell Dev Biol Anim 2008; 44:330-8. [PMID: 18661193 DOI: 10.1007/s11626-008-9128-7] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2008] [Accepted: 05/22/2008] [Indexed: 10/21/2022]
Abstract
The symbiotic octocoral Sinularia flexibilis is a producer of potential pharmaceuticals. Sustainable mass production of these corals as a source of such compounds demands innovative approaches, including coral cell culture. We studied various cell dissociation methodologies and the feasibility of cultivation of S. flexibilis cells on different media and cell dissociation methodologies. Mechanical dissociation of coral tissue always yielded the highest number of cells and allowed subsequent cellular growth in all treatments. The best results from chemical dissociation reagents were found with trypsin-ethylene diamine tetraacetic acid. Coral cells obtained from spontaneous dissociation did not grow. Light intensity was found to be important for coral cell culture showing an enduring symbiosis between the cultured cells and their intracellular algae. The Grace's insect medium and Grace's modified insect medium were found to be superior substrates. To confirm the similarity of the cultured cells and those in the coral tissue, a molecular test with Internal Transcribed Spacer primers was performed. Thereby, the presence of similar cells of both the coral cells and zooxanthella in different culture media was confirmed.
Collapse
|
18
|
Esteban G, Rincón R, Csákÿ AG, Plumet J. A Convenient Synthesis of the Central Core of Helioporins, seco-Pseudopterosins and Pseudopterosins via BCA-Annulation Sequence. Nat Prod Commun 2008. [DOI: 10.1177/1934578x0800300405] [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
A convenient synthesis of the central core of helioporins, seco-pseudopterosins and pseudopterosins in racemic form is reported, using a Suzuki coupling (A-ring formation)-Friedel-Crafts acylation sequence, followed by synthetic elaboration of the resulting tetralone derivative. Key steps of the method are a totally diastereoselective cuprate conjugate addition and a final, spontaneous Friedel-Crafts acylation.
Collapse
Affiliation(s)
- Gema Esteban
- Universidad Complutense, Facultad de Química, Departamento de Química Orgánica, E- 28040 Madrid, Spain
| | - Rocío Rincón
- Universidad Complutense, Facultad de Química, Departamento de Química Orgánica, E- 28040 Madrid, Spain
| | - Aurelio G. Csákÿ
- Universidad Complutense, Facultad de Química, Departamento de Química Orgánica, E- 28040 Madrid, Spain
| | - Joaquín Plumet
- Universidad Complutense, Facultad de Química, Departamento de Química Orgánica, E- 28040 Madrid, Spain
| |
Collapse
|
19
|
Abstract
This review covers the literature published in 2005 for marine natural products, with 704 citations (493 for the period January to December 2005) referring to compounds isolated from marine microorganisms and phytoplankton, green algae, brown algae, red algae, sponges, coelenterates, bryozoans, molluscs, tunicates and echinoderms. The emphasis is on new compounds (812 for 2005), together with their relevant biological activities, source organisms and country of origin. Biosynthetic studies, first syntheses, and syntheses that lead to the revision of structures or stereochemistries, have been included.
Collapse
Affiliation(s)
- John W Blunt
- Department of Chemistry, University of Canterbury, Christchurch, New Zealand.
| | | | | | | | | | | |
Collapse
|
20
|
Kolesnikova SA, Kalinovsky AI, Fedorov SN, Shubina LK, Stonik VA. Diterpenes from the Far-eastern brown alga Dictyota dichotoma. PHYTOCHEMISTRY 2006; 67:2115-9. [PMID: 16842831 DOI: 10.1016/j.phytochem.2006.05.041] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/22/2006] [Revised: 05/24/2006] [Accepted: 05/24/2006] [Indexed: 05/10/2023]
Abstract
Two diterpenes, ent-erogorgiaene and (+)-1,5-cyclo-5,8,9,10-tetrahydroerogorgiaene, were isolated from the Russian Far-eastern population of the brown alga Dictyota dichotoma along with three previously known from this alga terpenoids. In addition, pentadecane was the first time isolated as natural product from this species. The structures of all compounds and their stereochemistry were determined using 1D and 2D NMR ((1)H-(1)H COSY, DEPT, HSQC, HMBC and NOESY), mass spectrometry, and optical rotation data.
Collapse
Affiliation(s)
- Sophia A Kolesnikova
- Pacific Institute of Bioorganic Chemistry, Far East Branch of the Russian Academy of Sciences, Prospect 100 let Vladivostoku, 690022 Vladivostok, Russia
| | | | | | | | | |
Collapse
|
21
|
Further studies on the constituents of the gorgonian octocoral Pseudopterogorgia elisabethae collected in San Andrés and Providencia islands, Colombian Caribbean: isolation of a putative biosynthetic intermediate leading to erogorgiaene. Tetrahedron 2006. [DOI: 10.1016/j.tet.2006.02.032] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
|
22
|
Abstract
This review covers the literature published in 2004 for marine natural products, with 693 citations (491 for the period January to December 2004) referring to compounds isolated from marine microorganisms and phytoplankton, green algae, brown algae, red algae, sponges, coelenterates, bryozoans, molluscs, tunicates and echinoderms. The emphasis is on new compounds (716 for 2004), together with their relevant biological activities, source organisms and country of origin. Biosynthetic studies (8), and syntheses (80), including those that lead to the revision of structures or stereochemistries, have been included.
Collapse
Affiliation(s)
- John W Blunt
- Department of Chemistry, University of Canterbury, Christchurch, New Zealand.
| | | | | | | | | |
Collapse
|
23
|
Affiliation(s)
- James R Hanson
- Department of Chemistry, University of Sussex, Brighton, Sussex BN1 9QJ, UK
| |
Collapse
|
24
|
|