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Teuscher F, Lin W, Wray V, Edrada R, Padmakumar K, Proksch P, Ebel R. Two New Cyclopentanoids from the Endophytic Fungus Aspergillus sydowii Associated with the Marine Alga Acanthophora Spicifera. Nat Prod Commun 2019. [DOI: 10.1177/1934578x0600101103] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
A marine-derived endophytic fungus, identified as Aspergillus sydowii was isolated from the inner tissue of the marine red alga Acanthophora spicifera. After mass cultivation of the fungus, chemical investigation afforded two new chlorinated 2,5-diarylcyclopentenones, which were named sydowin A and B. The structures of the new compounds were established on the basis of NMR spectroscopic (1H, 13C, 1H detected direct, and long range 1H-13C correlations) and mass spectrometric (ESI and FT-ICR-MS) data. Structurally related fungal compounds have hitherto only been described from higher basidiomycetes, but are characterized for the first time from an ascomycete in this study.
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Affiliation(s)
- Franka Teuscher
- Institut für Pharmazeutische Biologie und Biotechnologie, Heinrich-Heine-Universität, Universitätsstr. 1, Geb. 26.23, 40225 Düsseldorf, Germany
| | - Wenhan Lin
- National Research Laboratories of Natural and Biomimetic Drugs, Peking University, No.38 Xueyang Rd., 100083, Beijing, PR China
| | - Victor Wray
- Gesellschaft für Biotechnologische Forschung, Mascheroder Weg 1, 38124 Braunschweig, Germany
| | - RuAngelie Edrada
- Institut für Pharmazeutische Biologie und Biotechnologie, Heinrich-Heine-Universität, Universitätsstr. 1, Geb. 26.23, 40225 Düsseldorf, Germany
| | - K. Padmakumar
- Centre for Marine Biodiversity, Department of Aquatic Biology and Fisheries, Kerala University Campus, Kariavattom, Thiruvananthapuram-695581, India
| | - Peter Proksch
- Institut für Pharmazeutische Biologie und Biotechnologie, Heinrich-Heine-Universität, Universitätsstr. 1, Geb. 26.23, 40225 Düsseldorf, Germany
| | - Rainer Ebel
- Institut für Pharmazeutische Biologie und Biotechnologie, Heinrich-Heine-Universität, Universitätsstr. 1, Geb. 26.23, 40225 Düsseldorf, Germany
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Jung HS, Lim Y, Kim EK. Therapeutic phytogenic compounds for obesity and diabetes. Int J Mol Sci 2014; 15:21505-37. [PMID: 25421245 PMCID: PMC4264239 DOI: 10.3390/ijms151121505] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2014] [Revised: 11/12/2014] [Accepted: 11/14/2014] [Indexed: 12/30/2022] Open
Abstract
Natural compounds have been used to develop drugs for many decades. Vast diversities and minimum side effects make natural compounds a good source for drug development. However, the composition and concentrations of natural compounds can vary. Despite this inconsistency, half of the Food and Drug Administration (FDA)-approved pharmaceuticals are natural compounds or their derivatives. Therefore, it is essential to continuously investigate natural compounds as sources of new pharmaceuticals. This review provides comprehensive information and analysis on natural compounds from plants (phytogenic compounds) that may serve as anti-obesity and/or anti-diabetes therapeutics. Our growing understanding and further exploration of the mechanisms of action of the phytogenic compounds may afford opportunities for development of therapeutic interventions in metabolic diseases.
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Affiliation(s)
- Hee Soong Jung
- Department of Brain Science, Daegu Gyeongbuk Institute of Science & Technology, 333, Techno Jungang-daero, Hyeonpung-myeon, Dalseong-gun, Daegu 711-873, Korea.
| | - Yun Lim
- Department of Brain Science, Daegu Gyeongbuk Institute of Science & Technology, 333, Techno Jungang-daero, Hyeonpung-myeon, Dalseong-gun, Daegu 711-873, Korea.
| | - Eun-Kyoung Kim
- Department of Brain Science, Daegu Gyeongbuk Institute of Science & Technology, 333, Techno Jungang-daero, Hyeonpung-myeon, Dalseong-gun, Daegu 711-873, Korea.
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Metabolome consistency: additional parazoanthines from the mediterranean zoanthid parazoanthus axinellae. Metabolites 2014; 4:421-32. [PMID: 24957034 PMCID: PMC4101514 DOI: 10.3390/metabo4020421] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2014] [Revised: 05/20/2014] [Accepted: 05/22/2014] [Indexed: 11/17/2022] Open
Abstract
Ultra-high pressure liquid chromatography coupled to high resolution mass spectrometry (UHPLC-MS/MS) analysis of the organic extract obtained from the Mediterranean zoanthid Parazoanthus axinellae yielded to the identification of five new parazoanthines F-J. The structures were fully determined by comparison of fragmentation patterns with those of previously isolated parazoathines and MS/MS spectra simulation of in silico predicted compounds according to the metabolome consistency. The absolute configuration of the new compounds has been assigned using on-line electronic circular dichroism (UHPLC-ECD). We thus demonstrated the potential of highly sensitive hyphenated techniques to characterize the structures of a whole family of natural products within the metabolome of a marine species. Minor compounds can be characterized using these techniques thus avoiding long isolation processes that may alter the structure of the natural products. These results are also of interest to identify putative bioactive compounds present at low concentration in a complex mixture.
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Sprogøe K, Staek D, Ziegler HL, Jensen TH, Holm-Møller SB, Jaroszewski JW. Combining HPLC-PDA-MS-SPE-NMR with circular dichroism for complete natural product characterization in crude extracts: levorotatory gossypol in Thespesia danis. JOURNAL OF NATURAL PRODUCTS 2008; 71:516-519. [PMID: 18290629 DOI: 10.1021/np800010r] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Despite recent demonstration of the power of HPLC-PDA-MS-SPE-NMR (high-performance liquid chromatography-photodiode-array detection-mass spectrometry-solid-phase extraction-nuclear magnetic resonance) in structure determination of natural products directly from minute amounts of crude extracts, this technique leaves chirality of the compounds uncharacterized. In this work we demonstrate that postcolumn SPE is a useful method of analyte concentration and accumulation not only for NMR but also for CD (circular dichroism) spectroscopy. Thus, use of HPLC-PDA-MS-SPE-NMR in combination with CD allowed rapid detection of ( R)-(-)-gossypol [( R)- 1] in Thespesia danis, providing a very rare example of the predominance of the levorotatory enantiomer of gossypol. Enantioselectivity of the in vitro antiplasmodial activity of gossypol was also demonstrated; the IC50 value of ( R)- 1 was 4.5 +/- 0.2 microM, with the eudismic ratio of about 2.5. No gossypol was detected in Gossypioides kirkii.
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Affiliation(s)
- Kennett Sprogøe
- Department of Medicinal Chemistry, Faculty of Pharmaceutical Sciences, University of Copenhagen, Universitetsparken 2, DK-2100 Copenhagen, Denmark
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Bringmann G, Gulder TA, Reichert M, Gulder T. The online assignment of the absolute configuration of natural products: HPLC-CD in combination with quantum chemical CD calculations. Chirality 2008; 20:628-42. [DOI: 10.1002/chir.20557] [Citation(s) in RCA: 109] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Harvey AL. Natural products as a screening resource. Curr Opin Chem Biol 2007; 11:480-4. [PMID: 17884696 DOI: 10.1016/j.cbpa.2007.08.012] [Citation(s) in RCA: 142] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2007] [Revised: 08/02/2007] [Accepted: 08/07/2007] [Indexed: 11/30/2022]
Abstract
Natural products have been the most productive source of leads for new drugs, but they are currently out of fashion with the pharmaceutical industry. New approaches to sourcing novel compounds from untapped areas of biodiversity coupled with the technical advances in analytical techniques (such as microcoil NMR and linked LC-MS-NMR) have removed many of the difficulties in using natural products in screening campaigns. As the 'chemical space' occupied by natural products is both more varied and more drug-like than that of combinatorial chemical collections, synthetic and biosynthetic methods are being developed to produce screening libraries of natural product-like compounds. A renaissance of drug discovery inspired by natural products can be predicted.
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Affiliation(s)
- Alan L Harvey
- Strathclyde Institute for Drug Research, University of Strathclyde, 27 Taylor Street, Glasgow G4 0NR, UK.
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Yang Z. Online hyphenated liquid chromatography-nuclear magnetic resonance spectroscopy-mass spectrometry for drug metabolite and nature product analysis. J Pharm Biomed Anal 2005; 40:516-27. [PMID: 16280226 DOI: 10.1016/j.jpba.2005.10.002] [Citation(s) in RCA: 50] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2005] [Revised: 09/20/2005] [Accepted: 10/01/2005] [Indexed: 11/20/2022]
Abstract
Screening analysis that aims at rapidly distinguishing new molecules in the presence of a large number of known compounds becomes increasingly important in the fields of drug metabolite profiling and nature product investigation. In the past decade, online-coupled liquid chromatography-nuclear magnetic resonance spectroscopy-mass spectrometry (LC-NMR-MS) has emerged as a powerful tool for the detection and identification of known and, more important, emerging compounds in complex clinical, pharmaceutical samples and nature product extracts, due to the complementary information provided by the two detectors for unambiguous structure elucidation. This review discusses the practical conditions under which LC-NMR-MS is suitable as a routine tool for unknown analysis, as well as the fundamental concepts and their advantage aspects. Particular attention is paid to its major operating parameters that include the instrumental configurations, working modes, NMR probe improvement and LC mobile phase selection. Finally, the recent applications of LC-NMR-MS to clinical metabolite and nature product analysis are summarized which have shown the benefit of this promising hyphenated technique.
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Affiliation(s)
- Zheng Yang
- Public Health Laboratory Division, Minnesota Department of Health, 2520 Silver Ln NE 204, Minneapolis, MN 55421, USA.
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Optically active bisbibenzyls from Bazzania trilobata: isolation and stereochemical analysis by chromatographic, chiroptical, and computational methods. Tetrahedron 2004. [DOI: 10.1016/j.tet.2004.08.037] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Hiort J, Maksimenka K, Reichert M, Perović-Ottstadt S, Lin WH, Wray V, Steube K, Schaumann K, Weber H, Proksch P, Ebel R, Müller WEG, Bringmann G. New natural products from the sponge-derived fungus Aspergillus niger. JOURNAL OF NATURAL PRODUCTS 2004; 67:1532-1543. [PMID: 15387655 DOI: 10.1021/np030551d] [Citation(s) in RCA: 114] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Fractionation of the EtOAc extract of a static culture of Aspergillus niger isolated from the Mediterranean sponge Axinella damicornis yielded eight secondary metabolites, out of which seven compounds (2-8) proved to be new natural products, whereas one was identified as the known fungal pigment cycloleucomelone (1). The new compounds included the 3,3'-bicoumarin bicoumanigrin (2), the structurally unusual 4-benzyl-1H-pyridin-6-one derivatives aspernigrins A and B (3 and 4), and pyranonigrins A-D (5-8), the latter featuring a novel pyrano[3,2-b]pyrrole skeleton hitherto unprecedented in nature. All structures were elucidated on the basis of extensive one- and two-dimensional NMR spectroscopic studies ((1)H, (13)C, COSY, HMQC, HMBC, NOE difference spectra) and mass spectral analysis. For the two chiral molecules 4 and 5, the absolute configurations were established by quantum chemical calculations of their circular dichroism (CD) spectra. In each case, two independent methods, i.e., a molecular dynamics approach taking into consideration the molecular flexibility, and a conformational analysis followed by Boltzmann weighting of the single CD spectra calculated for the conformers thus obtained, led to identical results without the need of any empirical comparison of chiroptical data reported for reference compounds. Bicoumanigrin (2) showed moderate cytotoxicity against human cancer cell lines in vitro. In addition, aspernigrin B (4) was found to display a strong neuroprotective effect against glutamic acid.
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Affiliation(s)
- J Hiort
- Institut für Pharmazeutische Biologie, Heinrich-Heine-Universität Düsseldorf, Universitätsstrasse 1, Geb. 26.23., D-40225 Düsseldorf, Germany
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Bringmann G, Lang G, Steffens S, Schaumann K. Petrosifungins A and B, novel cyclodepsipeptides from a sponge-derived strain of Penicillium brevicompactum. JOURNAL OF NATURAL PRODUCTS 2004; 67:311-315. [PMID: 15043401 DOI: 10.1021/np034015x] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
A strain of Penicillium brevicompactum derived from a specimen of the Mediterranean sponge Petrosia ficiformis was investigated for its secondary metabolites. Using fast centrifugal partitioning chromatography (FCPC) two previously unknown cyclodepsipeptides, petrosifungins A (1) and B (2), were isolated, both containing two neighboring units of the nonproteinogenic amino acid l-pipecolinic acid. The absolute configurations of all amino acids were established to be l using GITC derivatization and Marfey's method. Furthermore, the known metabolite brevianamide A (3) was isolated. The likewise known compounds mycophenolic acid (4) and asperphenamate (5) were identified from their spectroscopic properties directly in the extract using HPLC-UV, -MS, and -NMR coupling.
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Affiliation(s)
- Gerhard Bringmann
- Institut für Organische Chemie der Universität Würzburg, Am Hubland, D-97074 Würzburg, Germany.
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Müller WE, Schröder HC, Wiens M, Perović-Ottstadt S, Batel R, Müller IM. Traditional and Modern Biomedical Prospecting: Part II-the Benefits: Approaches for a Sustainable Exploitation of Biodiversity (Secondary Metabolites and Biomaterials from Sponges). EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2004; 1:133-144. [PMID: 15480439 PMCID: PMC516461 DOI: 10.1093/ecam/neh030] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/20/2004] [Accepted: 05/11/2004] [Indexed: 01/09/2023]
Abstract
The progress in molecular and cell biology has enabled a rational exploitation of the natural resources of the secondary metabolites and biomaterials from sponges (phylum Porifera). It could be established that these natural substances are superior for biomedical application to those obtained by the traditional combinatorial chemical approach. It is now established that the basic structural and functional elements are highly conserved from sponges to the crown taxa within the Protostomia (Drosophila melanogaster and Caenorhabditis elegans) and Deuterostomia (human); therefore, it is obvious that the molecular etiology of diseases within the metazoan animals have a common basis. Hence, the major challenge for scientists studying natural product chemistry is to elucidate the target(s) of a given secondary metabolite, which is per se highly active and selective. After this step, the potential clinical application can be approached. The potential value of some selected secondary metabolites, all obtained from sponges and their associated microorganisms, is highlighted. Examples of compounds that are already in medical use (inhibition of tumor/virus growth [arabinofuranosyl cytosine and arabinofuranosyl adenine]), or are being considered as lead structures (acting as cytostatic and anti-inflammatory secondary metabolites [avarol/avarone], causing induction of apoptosis [sorbicillactone]) or as prototypes for the interference with metabolic pathways common in organisms ranging from sponges to humans (modulation of pathways activated by fungal components [aeroplysinin], inhibition of angiogenesis [2-methylthio-1,4-napthoquinone], immune modulating activity [FK506]) are discussed in this study. In addition, bioactive proteins from sponges are listed (antibacterial activity [pore-forming protein and tachylectin]). Finally, it is outlined that the skeletal elements-the spicules-serve as blueprints for new biomaterials, especially those based on biosilica, which might be applied in biomedicine. These compounds and biomaterials have been isolated/studied by members of the German Center of Excellence BIOTECmarin. The goal for the future is to successfully introduce some of these compounds in the treatment of human diseases in order to raise the public awareness on the richness and diversity of natural products, which should be sustainably exploited for human benefit.
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Affiliation(s)
- Werner E.G. Müller
- Institut für Physiologische Chemie, Abteilung Angewandte Molekularbiologie, UniversitätDuesbergweg 6, D-55099 Mainz; Germany
- For reprints and all correspondence: Prof Dr WEG Müller, Institut für Physiologische Chemie, Abteilung Angewandte Molekularbiologie, Universität, Duesbergweg 6, 55099 Mainz; Germany. Tel: +6131-3925910; Fax: +6131-3925243. E-mail:
| | - Heinz C. Schröder
- Institut für Physiologische Chemie, Abteilung Angewandte Molekularbiologie, UniversitätDuesbergweg 6, D-55099 Mainz; Germany
| | - Matthias Wiens
- Institut für Physiologische Chemie, Abteilung Angewandte Molekularbiologie, UniversitätDuesbergweg 6, D-55099 Mainz; Germany
| | - Sanja Perović-Ottstadt
- Institut für Physiologische Chemie, Abteilung Angewandte Molekularbiologie, UniversitätDuesbergweg 6, D-55099 Mainz; Germany
| | - Renato Batel
- Center for Marine Research, Ruder Boskovic InstituteHR-52210 Rovinj, Croatia
| | - Isabel M. Müller
- Institut für Physiologische Chemie, Abteilung Angewandte Molekularbiologie, UniversitätDuesbergweg 6, D-55099 Mainz; Germany
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