1
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Bendejacq-Seychelles A, Gibot-Leclerc S, Guillemin JP, Mouille G, Steinberg C. Phytotoxic fungal secondary metabolites as herbicides. PEST MANAGEMENT SCIENCE 2024; 80:92-102. [PMID: 37794581 DOI: 10.1002/ps.7813] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/03/2023] [Revised: 09/28/2023] [Accepted: 10/05/2023] [Indexed: 10/06/2023]
Abstract
Among the alternatives to synthetic plant protection products, biocontrol appears as a promising method. This review reports on the diversity of fungal secondary metabolites phytotoxic to weeds and on the approach generally used to extract, characterize, identify and exploit them for weed management. The 183 phytotoxic fungal secondary metabolites discussed in this review fall into five main classes of molecules: 61 polyketides, 53 terpenoids, 36 nitrogenous metabolites, 18 phenols and phenolic acids, and 15 miscellaneous. They are mainly produced by the genera Drechslera, Fusarium and Alternaria. The phytotoxic effects, more often described by the symptoms they produce on plants than by their mode of action, range from inhibition of germination to inhibition of root and vegetative growth, including tissue and organ alterations. The biochemical characterization of fungal secondary metabolites requires expertise and tools to carry out fungal cultivation and metabolite extraction, phytotoxicity tests, purification and fractionation of the extracts, and chemical identification procedures. Phytotoxicity tests are mainly carried out under controlled laboratory conditions (not always on whole plants), while effectiveness against targeted weeds and environmental impacts must be assessed in greenhouses and open fields. These steps are necessary for the formulation of effective, environment-friendly fungal secondary metabolites-derived bioherbicides using new technologies such as nanomaterials. © 2023 Society of Chemical Industry.
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Affiliation(s)
- Ana Bendejacq-Seychelles
- Agroécologie, INRAE, Institut Agro, Univ. Bourgogne, Univ Bourgogne Franche-Comté, Dijon, France
| | - Stéphanie Gibot-Leclerc
- Agroécologie, INRAE, Institut Agro, Univ. Bourgogne, Univ Bourgogne Franche-Comté, Dijon, France
| | - Jean-Philippe Guillemin
- Agroécologie, INRAE, Institut Agro, Univ. Bourgogne, Univ Bourgogne Franche-Comté, Dijon, France
| | - Gregory Mouille
- Univ Paris Saclay, AgroParisTech, INRAE, Inst Jean Pierre Bourgin, Versailles, France
| | - Christian Steinberg
- Agroécologie, INRAE, Institut Agro, Univ. Bourgogne, Univ Bourgogne Franche-Comté, Dijon, France
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2
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Wu XQ, Li J, Zhou X, Wang J, Tan YF, Mo JS, Liu S, Xu KP, Tan GS, Zhang W, Wang WX. Liver-cell protective pyridones from the fungi Tolypocladium album dws120. PHYTOCHEMISTRY 2023; 212:113730. [PMID: 37220864 DOI: 10.1016/j.phytochem.2023.113730] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/15/2023] [Revised: 05/01/2023] [Accepted: 05/18/2023] [Indexed: 05/25/2023]
Abstract
Five previously undescribed pyridone derivatives, tolypyridones I-M, were identified from the solid rice medium fermented by Tolypocladium album dws120, along with two known compounds tolypyridone A (or trichodin A) and pyridoxatin. Their planar structures and partial relative configurations have been determined by careful interpretation of their spectroscopic data. The full assignment of the relative and absolute configurations of tolypyridones I-M was achieved by gauge-independent atomic orbital 13C NMR calculation, quantitative nuclear Overhauser effects based interatomic distance calculation, and electronic circular dichroism calculation. In addition, we have fully determined the configuration of tolypyridone A by X-ray diffraction analysis. In bioassay, tolypyridones I was able to restore cell viability and inhibit the release of alanine aminotransferase and aspartate aminotransferase for ethanol-induced LO2 cell, suggesting its potential as a liver protective agent.
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Affiliation(s)
- Xiao-Qian Wu
- Xiangya School of Pharmaceutical Sciences, Central South University, Changsha, Hunan, 410008, PR China
| | - Jing Li
- Xiangya School of Pharmaceutical Sciences, Central South University, Changsha, Hunan, 410008, PR China; Department of Pharmacy, National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan, 410008, PR China
| | - Xi Zhou
- School of Life Sciences, Central South University, Changsha, Hunan, 410008, PR China
| | - Jing Wang
- Xiangya School of Pharmaceutical Sciences, Central South University, Changsha, Hunan, 410008, PR China
| | - Yu-Fen Tan
- Department of Pharmacy, National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan, 410008, PR China
| | - Ji-Song Mo
- Xiangya School of Pharmaceutical Sciences, Central South University, Changsha, Hunan, 410008, PR China
| | - Shao Liu
- Department of Pharmacy, National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan, 410008, PR China
| | - Kang-Ping Xu
- Xiangya School of Pharmaceutical Sciences, Central South University, Changsha, Hunan, 410008, PR China
| | - Gui-Shan Tan
- Department of Pharmacy, National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan, 410008, PR China
| | - Wei Zhang
- Hunan Institute for Drug Control, Changsha, Hunan, 410001, PR China
| | - Wen-Xuan Wang
- Xiangya School of Pharmaceutical Sciences, Central South University, Changsha, Hunan, 410008, PR China.
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3
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Kurosawa S, Okamura H, Yoshida A, Tomita T, Sone Y, Hasebe F, Shinada T, Takikawa H, Kosono S, Nishiyama M. Mechanisms of Sugar Aminotransferase-like Enzymes to Synthesize Stereoisomers of Non-proteinogenic Amino Acids in Natural Product Biosynthesis. ACS Chem Biol 2023; 18:385-395. [PMID: 36669120 DOI: 10.1021/acschembio.2c00823] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
(2,6)-Diamino-(5,7)-dihydroxyheptanoic acid (DADH), a non-proteinogenic amino acid, is converted to 1-azabicyclo[3.1.0]hexane ring-containing amino acids that are subsequently incorporated into ficellomycin and vazabitide A. The present study revealed that the sugar aminotransferase-like enzymes Fic25 and Vzb9, with a high amino acid sequence identity (56%) to each other, synthesized stereoisomers of DADH with (6S) and (6R) configurations, respectively. The crystal structure of the Fic25 complex with a PLP-(6S)-N2-acetyl-DADH adduct indicated that Asn45 and Gln197 (Asn205 and Ala53 in Vzb9) were located at positions that affected the stereochemistry of DADH being synthesized. A modeling study suggested that amino acid substitutions between Fic25 and Vzb9 allowed the enzymes to bind to the substrate with almost 180° rotation in the C5-C7 portions of the DADH molecules, accompanied by a concomitant shift in their C1-C4 portions. In support of this result, the replacement of two corresponding residues in Fic25 and Vzb9 increased (6R) and (6S) stereoselectivities, respectively. The different stereochemistry at C6 of DADH resulted in a different stereochemistry/orientation of the aziridine portion of the 1-azabicyclo[3.1.0]hexane ring, which plays a crucial role in biological activity, between ficellomycin and vazabitide A. A phylogenic analysis suggested that Fic25 and Vzb9 evolved from sugar aminotransferases to produce unusual building blocks for expanding the structural diversity of secondary metabolites.
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Affiliation(s)
- Sumire Kurosawa
- Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1, Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan
| | - Hironori Okamura
- Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1, Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan
| | - Ayako Yoshida
- Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1, Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan.,Collaborative Research Institute for Innovative Microbiology, The University of Tokyo, 1-1-1, Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan
| | - Takeo Tomita
- Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1, Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan.,Collaborative Research Institute for Innovative Microbiology, The University of Tokyo, 1-1-1, Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan
| | - Yusuke Sone
- Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1, Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan
| | - Fumihito Hasebe
- Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1, Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan
| | - Tetsuro Shinada
- Graduate School of Science, Osaka City University, 3-3-138, Sugimoto, Sumiyoshi-ku, Osaka-shi, Osaka 558-8585, Japan
| | - Hirosato Takikawa
- Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1, Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan
| | - Saori Kosono
- Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1, Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan.,Collaborative Research Institute for Innovative Microbiology, The University of Tokyo, 1-1-1, Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan
| | - Makoto Nishiyama
- Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1, Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan.,Collaborative Research Institute for Innovative Microbiology, The University of Tokyo, 1-1-1, Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan
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4
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Influence of amino acid residue on chromatographic behaviour of μ-opioid receptor agonist tetrapeptide analogue on crown ether based chiral stationary phase. J Chromatogr A 2022; 1673:463059. [DOI: 10.1016/j.chroma.2022.463059] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2022] [Revised: 04/11/2022] [Accepted: 04/11/2022] [Indexed: 11/22/2022]
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5
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Marsico G, Calice U, Scafato P, Belviso S, Evidente A, Superchi S. Computational Approaches and Use of Chiroptical Probes in the Absolute Configuration Assignment to Natural Products by ECD Spectroscopy: A 1,2,3-Trihydroxy-p-menthane as a Case Study. Biomolecules 2022; 12:biom12030421. [PMID: 35327613 PMCID: PMC8945943 DOI: 10.3390/biom12030421] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Revised: 03/02/2022] [Accepted: 03/06/2022] [Indexed: 12/13/2022] Open
Abstract
In this study, the computational analysis of electronic circular dichroism (ECD) spectra and the employment of biphenyl chiroptical probes were compared in the absolute configuration assignment of (-)-1α,2α,3β-trihydroxy-p-menthane (1), taken as a representative example of a UV-transparent chiral natural product. The usefulness of chiroptical probes in the configurational assignments of natural products and their complementarity to the computational protocols is herein highlighted. The biphenyl probe approach proves to be straightforward, reliable, and suitable for conformationally mobile and ECD silent compounds, not treatable by computational analysis of chiroptical data.
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Affiliation(s)
- Giulia Marsico
- Department of Sciences, University of Basilicata, Via dell’Ateneo Lucano 10, 85100 Potenza, Italy; (G.M.); (U.C.); (P.S.); (S.B.)
| | - Umberto Calice
- Department of Sciences, University of Basilicata, Via dell’Ateneo Lucano 10, 85100 Potenza, Italy; (G.M.); (U.C.); (P.S.); (S.B.)
| | - Patrizia Scafato
- Department of Sciences, University of Basilicata, Via dell’Ateneo Lucano 10, 85100 Potenza, Italy; (G.M.); (U.C.); (P.S.); (S.B.)
| | - Sandra Belviso
- Department of Sciences, University of Basilicata, Via dell’Ateneo Lucano 10, 85100 Potenza, Italy; (G.M.); (U.C.); (P.S.); (S.B.)
| | - Antonio Evidente
- Department of Chemical Sciences, University of Naples “Federico II”, Complesso Universitario Monte Sant’Angelo, Via Cintia 4, 80126 Napoli, Italy;
| | - Stefano Superchi
- Department of Sciences, University of Basilicata, Via dell’Ateneo Lucano 10, 85100 Potenza, Italy; (G.M.); (U.C.); (P.S.); (S.B.)
- Correspondence: ; Tel.: +39-0971206098
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6
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Mazzeo G, Cimmino A, Longhi G, Masi M, Evidente A, Abbate S. The Assignment of the Absolute Configuration of Non-Cyclic Sesquiterpenes by Vibrational and Electronic Circular Dichroism: The Example of Chiliadenus lopadusanus Metabolites. Biomolecules 2021; 11:biom11121902. [PMID: 34944545 PMCID: PMC8699476 DOI: 10.3390/biom11121902] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2021] [Revised: 12/10/2021] [Accepted: 12/16/2021] [Indexed: 11/16/2022] Open
Abstract
9-Hydroxynerolidol, 9-oxonerolidol, and chiliadenol B are three farnesane-type sesquiterpenoids isolated from Chiliadenus lopadusanus that have shown an interesting activity against human pathogens as Gram+ and Gram- bacteria resistant to antibiotics. However, the absolute configuration (AC) of these interesting sesquiterpenes has not been assigned so far. Vibrational and electronic circular dichroism spectra have been recorded and correlations are pointed out for the three compounds. Density functional theory (DFT) calculations are used in conjunction with Mosher's method of investigation to assign AC. Statistical analysis is considered to quantitatively define the choice of AC from VCD spectra.
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Affiliation(s)
- Giuseppe Mazzeo
- Dipartimento di Medicina Molecolare e Traslazionale, Università degli Studi di Brescia, Viale Europa 11, 25123 Brescia, Italy; (G.M.); (G.L.)
| | - Alessio Cimmino
- Dipartimento di Scienze Chimiche, Università di Napoli Federico II, Complesso Universitario Monte Sant’Angelo, 80126 Napoli, Italy; (A.C.); (M.M.); (A.E.)
| | - Giovanna Longhi
- Dipartimento di Medicina Molecolare e Traslazionale, Università degli Studi di Brescia, Viale Europa 11, 25123 Brescia, Italy; (G.M.); (G.L.)
| | - Marco Masi
- Dipartimento di Scienze Chimiche, Università di Napoli Federico II, Complesso Universitario Monte Sant’Angelo, 80126 Napoli, Italy; (A.C.); (M.M.); (A.E.)
| | - Antonio Evidente
- Dipartimento di Scienze Chimiche, Università di Napoli Federico II, Complesso Universitario Monte Sant’Angelo, 80126 Napoli, Italy; (A.C.); (M.M.); (A.E.)
| | - Sergio Abbate
- Dipartimento di Medicina Molecolare e Traslazionale, Università degli Studi di Brescia, Viale Europa 11, 25123 Brescia, Italy; (G.M.); (G.L.)
- Correspondence: ; Tel.: +39-030-3717415
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7
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In Vitro and In Vivo Toxicity Evaluation of Natural Products with Potential Applications as Biopesticides. Toxins (Basel) 2021; 13:toxins13110805. [PMID: 34822589 PMCID: PMC8617648 DOI: 10.3390/toxins13110805] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2021] [Revised: 11/06/2021] [Accepted: 11/12/2021] [Indexed: 12/28/2022] Open
Abstract
The use of natural products in agriculture as pesticides has been strongly advocated. However, it is necessary to assess their toxicity to ensure their safe use. In the present study, mammalian cell lines and fish models of the zebrafish (Danio rerio) and medaka (Oryzias latipes) have been used to investigate the toxic effects of ten natural products which have potential applications as biopesticides. The fungal metabolites cavoxin, epi-epoformin, papyracillic acid, seiridin and sphaeropsidone, together with the plant compounds inuloxins A and C and ungeremine, showed no toxic effects in mammalian cells and zebrafish embryos. Conversely, cyclopaldic and α-costic acids, produced by Seiridium cupressi and Dittrichia viscosa, respectively, caused significant mortality in zebrafish and medaka embryos as a result of yolk coagulation. However, both compounds showed little effect in zebrafish or mammalian cell lines in culture, thus highlighting the importance of the fish embryotoxicity test in the assessment of environmental impact. Given the embryotoxicity of α-costic acid and cyclopaldic acid, their use as biopesticides is not recommended. Further ecotoxicological studies are needed to evaluate the potential applications of the other compounds.
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8
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Johnson JL, Santoro E, Zatout R, Petrovic AG, Cimmino A, Superchi S, Evidente A, Berova ND, Polavarapu PL. Absolute configuration of seco-eudesmanolide inuloxin D from experimental and predicted chiroptical studies of its 4-O-acetyl derivative. Chirality 2021; 33:233-241. [PMID: 33598968 DOI: 10.1002/chir.23301] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2020] [Revised: 02/05/2021] [Accepted: 02/08/2021] [Indexed: 12/12/2022]
Abstract
Sesquitepenoids inuloxins A-D, belonging to different subgroups, were isolated from Dittrichia viscosa and showed potential biocontrol of some parasitic plants as Pelipanche, Orobanche, and Cuscuta species. The absolute configurations of the first three inuloxins A-C were previously determined by using experimental and computational chiroptical spectroscopic methods. The absolute configuration of inuloxin D remains to be established. The bioactive inuloxin E, closely related to inuloxin D, was recently isolated from the same plant organic extract. The same relative configuration of inuloxin D was assigned to inuloxin E by comparison of their NMR spectroscopic data. The absolute configurations of inuloxin D and inuloxin E are suggested in this work by analysis of the experimental and predicted chiroptical properties of the 4-O-acetyl derivative of inuloxin D.
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Affiliation(s)
- Jordan L Johnson
- Department of Chemistry, Vanderbilt University, Nashville, Tennessee, USA
| | - Ernesto Santoro
- Department of Chemistry, Vanderbilt University, Nashville, Tennessee, USA
| | - Roukia Zatout
- Department of chemical Sciences, University of Naples Federico II, Naples, Italy
- Laboratoire de Mycologie, de Biotechnologie et de l'Activité Microbienne (LaMyBAM), Département de Biologie Appliquée, Université des Frères Mentouri, Constantine, Algeria
| | - Ana G Petrovic
- Department of Chemical and Biological Sciences, New York Institute of Technology, New York, New York, USA
| | - Alessio Cimmino
- Department of chemical Sciences, University of Naples Federico II, Naples, Italy
| | | | - Antonio Evidente
- Department of chemical Sciences, University of Naples Federico II, Naples, Italy
| | - Nina D Berova
- Department of Chemistry, Columbia University, New York, New York, USA
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9
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Zabel S, Brandt W, Porzel A, Athmer B, Bennewitz S, Schäfer P, Kortbeek R, Bleeker P, Tissier A. A single cytochrome P450 oxidase from Solanum habrochaites sequentially oxidizes 7-epi-zingiberene to derivatives toxic to whiteflies and various microorganisms. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2021; 105:1309-1325. [PMID: 33617106 DOI: 10.1111/tpj.15113] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/22/2020] [Revised: 10/30/2020] [Accepted: 11/30/2020] [Indexed: 05/26/2023]
Abstract
Secretions from glandular trichomes potentially protect plants against a variety of aggressors. In the tomato clade of the Solanum genus, glandular trichomes of wild species produce a rich source of chemical diversity at the leaf surface. Previously, 7-epi-zingiberene produced in several accessions of Solanum habrochaites was found to confer resistance to whiteflies (Bemisia tabaci) and other insect pests. Here, we report the identification and characterisation of 9-hydroxy-zingiberene (9HZ) and 9-hydroxy-10,11-epoxyzingiberene (9H10epoZ), two derivatives of 7-epi-zingiberene produced in glandular trichomes of S. habrochaites LA2167. Using a combination of transcriptomics and genetics, we identified a gene coding for a cytochrome P450 oxygenase, ShCYP71D184, that is highly expressed in trichomes and co-segregates with the presence of the zingiberene derivatives. Transient expression assays in Nicotiana benthamiana showed that ShCYP71D184 carries out two successive oxidations to generate 9HZ and 9H10epoZ. Bioactivity assays showed that 9-hydroxy-10,11-epoxyzingiberene in particular exhibits substantial toxicity against B. tabaci and various microorganisms including Phytophthora infestans and Botrytis cinerea. Our work shows that trichome secretions from wild tomato species can provide protection against a wide variety of organisms. In addition, the availability of the genes encoding the enzymes for the pathway of 7-epi-zingiberene derivatives makes it possible to introduce this trait in cultivated tomato by precision breeding.
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Affiliation(s)
- Sebastian Zabel
- Department of Cell and Metabolic Biology, Leibniz-Institute of Plant Biochemistry, Weinberg 3, Halle, 06120, Germany
- IDT Biologika Deutschland, Am Pharmapark, Dessau-Rosslau, 06861, Germany
| | - Wolfgang Brandt
- Department of Bioorganic Chemistry, Leibniz-Institute of Plant Biochemistry, Weinberg 3, Halle, 06120, Germany
| | - Andrea Porzel
- Department of Bioorganic Chemistry, Leibniz-Institute of Plant Biochemistry, Weinberg 3, Halle, 06120, Germany
| | - Benedikt Athmer
- Department of Cell and Metabolic Biology, Leibniz-Institute of Plant Biochemistry, Weinberg 3, Halle, 06120, Germany
| | - Stefan Bennewitz
- Department of Cell and Metabolic Biology, Leibniz-Institute of Plant Biochemistry, Weinberg 3, Halle, 06120, Germany
| | - Petra Schäfer
- Department of Cell and Metabolic Biology, Leibniz-Institute of Plant Biochemistry, Weinberg 3, Halle, 06120, Germany
| | - Ruy Kortbeek
- Swammerdam Institute for Life Sciences, Green Life Sciences Research Cluster, University of Amsterdam, Science Park 904, Amsterdam, 1098 XH, The Netherlands
| | - Petra Bleeker
- Swammerdam Institute for Life Sciences, Green Life Sciences Research Cluster, University of Amsterdam, Science Park 904, Amsterdam, 1098 XH, The Netherlands
| | - Alain Tissier
- Department of Cell and Metabolic Biology, Leibniz-Institute of Plant Biochemistry, Weinberg 3, Halle, 06120, Germany
- VERROVACCiNES GmbH, Blücherstraße 26, Halle (Saale), 06120, Germany
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10
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Yasui T, Kikuchi T, Yamamoto Y. Rhodium-catalyzed cycloisomerization of ester-tethered 1,6-diynes with cyclopropanol moiety leading to tetralone/exocyclic diene hybrid molecules. Chem Commun (Camb) 2020; 56:12865-12868. [PMID: 32969429 DOI: 10.1039/d0cc05429a] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
The rhodium-catalyzed cycloisomerization of ester-tethered 1,6-diynes bearing a cyclopropanol moiety produced tetralone/exocyclic diene hybrid molecules with thermodynamically unfavorable alkene geometry. The results of control experiments and density functional theory calculations suggest that the ester tether plays an important role in the efficiency of E/Z isomerization processes.
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Affiliation(s)
- Takeshi Yasui
- Department of Basic Medicinal Sciences, Graduate School of Pharmaceutical Sciences, Nagoya University, Chikusa, Nagoya 464-8601, Japan.
| | - Tomohiro Kikuchi
- Department of Basic Medicinal Sciences, Graduate School of Pharmaceutical Sciences, Nagoya University, Chikusa, Nagoya 464-8601, Japan.
| | - Yoshihiko Yamamoto
- Department of Basic Medicinal Sciences, Graduate School of Pharmaceutical Sciences, Nagoya University, Chikusa, Nagoya 464-8601, Japan.
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11
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Masi M, Santoro E, Clement S, Meyer S, Scafato P, Superchi S, Evidente A. Further secondary metabolites produced by the fungus
Pyricularia grisea
isolated from buffelgrass (
Cenchrus ciliaris
). Chirality 2020; 32:1234-1242. [DOI: 10.1002/chir.23270] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2020] [Revised: 07/05/2020] [Accepted: 07/06/2020] [Indexed: 02/06/2023]
Affiliation(s)
- Marco Masi
- Dipartimento di Scienze Chimiche Università di Napoli Federico II, Complesso Universitario Monte S. Angelo Naples Italy
| | - Ernesto Santoro
- Dipartimento di Scienze Università della Basilicata Potenza Italy
| | - Suzette Clement
- Shrub Sciences Laboratory U.S. Forest Service Rocky Mountain Research Station Provo Utah USA
| | - Susan Meyer
- Shrub Sciences Laboratory U.S. Forest Service Rocky Mountain Research Station Provo Utah USA
| | - Patrizia Scafato
- Dipartimento di Scienze Università della Basilicata Potenza Italy
| | - Stefano Superchi
- Dipartimento di Scienze Università della Basilicata Potenza Italy
| | - Antonio Evidente
- Dipartimento di Scienze Chimiche Università di Napoli Federico II, Complesso Universitario Monte S. Angelo Naples Italy
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12
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Roscetto E, Masi M, Esposito M, Di Lecce R, Delicato A, Maddau L, Calabrò V, Evidente A, Catania MR. Anti-Biofilm Activity of the Fungal Phytotoxin Sphaeropsidin A Against Clinical Isolates of Antibiotic-Resistant Bacteria. Toxins (Basel) 2020; 12:E444. [PMID: 32650496 PMCID: PMC7404997 DOI: 10.3390/toxins12070444] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2020] [Revised: 07/02/2020] [Accepted: 07/06/2020] [Indexed: 12/18/2022] Open
Abstract
Many pathogens involved in human infection have rapidly increased their antibiotic resistance, reducing the effectiveness of therapies in recent decades. Most of them can form biofilms and effective drugs are not available to treat these formations. Natural products could represent an efficient solution in discovering and developing new drugs to overcome antimicrobial resistance and treat biofilm-related infections. In this study, 20 secondary metabolites produced by pathogenic fungi of forest plants and belonging to diverse classes of naturally occurring compounds were evaluated for the first time against clinical isolates of antibiotic-resistant Gram-negative and Gram-positive bacteria. epi-Epoformin, sphaeropsidone, and sphaeropsidin A showed antimicrobial activity on all test strains. In particular, sphaeropsidin A was effective at low concentrations with Minimum Inhibitory Concentration (MIC) values ranging from 6.25 μg/mL to 12.5 μg/mL against all reference and clinical test strains. Furthermore, sphaeropsidin A at sub-inhibitory concentrations decreased methicillin-resistant S. aureus (MRSA) and P. aeruginosa biofilm formation, as quantified by crystal violet staining. Interestingly, mixtures of sphaeropsidin A and epi-epoformin have shown antimicrobial synergistic effects with a concomitant reduction of cytotoxicity against human immortalized keratinocytes. Our data show that sphaeropsidin A and epi-epoformin possess promising antimicrobial properties.
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Affiliation(s)
- Emanuela Roscetto
- Dipartimento di Medicina Molecolare e Biotecnologie Mediche, Università di Napoli Federico II, Via Pansini 5, 80131 Naples, Italy; (M.E.); (M.R.C.)
| | - Marco Masi
- Dipartimento di Scienze Chimiche, Università di Napoli Federico II, Complesso Universitario Monte S. Angelo, Via Cintia 4, 80126 Napoli, Italy; (R.D.L.); (A.E.)
| | - Matilde Esposito
- Dipartimento di Medicina Molecolare e Biotecnologie Mediche, Università di Napoli Federico II, Via Pansini 5, 80131 Naples, Italy; (M.E.); (M.R.C.)
| | - Roberta Di Lecce
- Dipartimento di Scienze Chimiche, Università di Napoli Federico II, Complesso Universitario Monte S. Angelo, Via Cintia 4, 80126 Napoli, Italy; (R.D.L.); (A.E.)
| | - Antonella Delicato
- Dipartimento di Biologia, Università di Napoli Federico II, Complesso Universitario Monte S. Angelo, Via Cintia 4, 80126 Napoli, Italy; (A.D.); (V.C.)
| | - Lucia Maddau
- Dipartimento di Agraria, Sezione di Patologia Vegetale ed Entomologia, Università degli Studi di Sassari, Viale Italia 39, 07100 Sassari, Italy;
| | - Viola Calabrò
- Dipartimento di Biologia, Università di Napoli Federico II, Complesso Universitario Monte S. Angelo, Via Cintia 4, 80126 Napoli, Italy; (A.D.); (V.C.)
| | - Antonio Evidente
- Dipartimento di Scienze Chimiche, Università di Napoli Federico II, Complesso Universitario Monte S. Angelo, Via Cintia 4, 80126 Napoli, Italy; (R.D.L.); (A.E.)
| | - Maria Rosaria Catania
- Dipartimento di Medicina Molecolare e Biotecnologie Mediche, Università di Napoli Federico II, Via Pansini 5, 80131 Naples, Italy; (M.E.); (M.R.C.)
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13
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Masi M, Pannacci E, Santoro E, Zermane N, Superchi S, Evidente A. Stoechanones A and B, Phytotoxic Copaane Sesquiterpenoids Isolated from Lavandula stoechas with Potential Herbicidal Activity against Amaranthus retroflexus. JOURNAL OF NATURAL PRODUCTS 2020; 83:1658-1665. [PMID: 32383878 DOI: 10.1021/acs.jnatprod.0c00182] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
From the organic extract of Lavandula stoechas, a Mediterranean native plant species, two new phytotoxic copaane sesquiterpenoids were isolated and named stoechanones A and B (1 and 2). They were obtained together with the methyl esters of caffeic and p-coumaric acids and the flavonoid apigenin (3-5, respectively). The structures of stoechanones A and B were determined by spectroscopic (essentially 1D and 2D 1H and 13C NMR and HRESIMS) and chemical methods, and they were characterized as 9,10-dihydroxy-8-isopropyl-1,5-dimethyltricyclo[4.4.0.02.7]dec-4-en-3-one and its 9-O-acetyl derivative. Their relative configurations were assigned by NOESY experiments, and the absolute configurations by comparison of the experimental and DFT-computed ECD spectra. When assayed through Petri dish bioassays, both stoechanones A and B showed phytotoxic effects against seed germination and seedling growth of Amaranthus retroflexus, strongly inhibiting seed germination percentage and radicle and hypocotyl lengths of seedlings. Owing to the herbicidal activity toward A. retroflexus, these two new tricyclic sesquiterpenoids could be proposed and developed as natural bioherbicides in order to increase the control of this problematic weed in the future.
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Affiliation(s)
- Marco Masi
- Dipartimento di Scienze Chimiche, Università di Napoli Federico II, Complesso Universitario Monte S. Angelo, Via Cintia 4, 80126 Napoli, Italy
| | - Euro Pannacci
- Dipartimento di Scienze Agrarie, Alimentari e Ambientali, Università degli Studi di Perugia, Borgo XX Giugno, 74, 06121 Perugia, Italy
| | - Ernesto Santoro
- Dipartimento di Scienze, Università della Basilicata, Via dell'Ateneo Lucano 10, 85100 Potenza, Italy
| | - Nadjia Zermane
- Faculty of Sciences, University of Algiers, 2 Didouche Mourad Street, 16002 Algiers, Algeria
| | - Stefano Superchi
- Dipartimento di Scienze, Università della Basilicata, Via dell'Ateneo Lucano 10, 85100 Potenza, Italy
| | - Antonio Evidente
- Dipartimento di Scienze Chimiche, Università di Napoli Federico II, Complesso Universitario Monte S. Angelo, Via Cintia 4, 80126 Napoli, Italy
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14
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Melleins-Intriguing Natural Compounds. Biomolecules 2020; 10:biom10050772. [PMID: 32429259 PMCID: PMC7277180 DOI: 10.3390/biom10050772] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2020] [Revised: 05/11/2020] [Accepted: 05/12/2020] [Indexed: 12/16/2022] Open
Abstract
Melleins are 3,4-dihydroisocoumarins mainly produced by fungi, but also by plants, insects and bacteria. These specialized metabolites play important roles in the life cycles of the producers and they are involved in many biochemical and ecological processes. This review outlines the isolation and chemical and biological characterizations of natural-occurring melleins from the first report of (R)-mellein in 1933 to the most recent advances in their characterization in 2019. In addition, the pathways that could be involved in mellein biosynthesis are discussed, along with the enzymes and genes involved.
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15
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A study of tetrapeptide enantiomeric separation on crown ether based chiral stationary phases. J Chromatogr A 2020; 1622:461152. [PMID: 32376024 DOI: 10.1016/j.chroma.2020.461152] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2020] [Revised: 04/17/2020] [Accepted: 04/20/2020] [Indexed: 01/13/2023]
Abstract
The chiral separations of small peptides is an important challenge in the biological and medical sciences, because different stereoisomers of chiral drugs can often possess different pharmacological, pharmacokinetic, and/or toxicological activities. Commercially available crown ether chiral stationary phases based on S-(3,3'-diphenyl-1,1'-binaphthyl)-20-crown-6 (CROWNPAK CR-I (+)) and (+)-(18-crown-6)-2,3,11,12-tetracarboxylic acid (ChiroSil RCA (+)) have been successfully used for separating enantiomers of various racemic compounds containing primary amino groups. In this investigation, enantioresolution of more complex model analyte - tetrapeptide Tyr-Arg-Phe-Lys-NH2, has been reported on crown ether chiral stationary phases. Organic and acidic modifier content in aqueous mobile phase was tested. All Tyr-Arg-Phe-Lys-NH2 stereoisomers showed U-shaped retention plots, based on ACN content in mobile phase. Increased retention of tetrapeptide stereoisomers was observed at low (<35%) and at high (>70%) acetonitrile content in the mobile phase, indicating that different separation mechanisms are most likely involved. As a result, baseline separation of all eight tetrapeptide enantiomer pairs was achieved under isocratic elution mode on both chiral columns.
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16
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Santoro E, Vergura S, Scafato P, Belviso S, Masi M, Evidente A, Superchi S. Absolute Configuration Assignment to Chiral Natural Products by Biphenyl Chiroptical Probes: The Case of the Phytotoxins Colletochlorin A and Agropyrenol. JOURNAL OF NATURAL PRODUCTS 2020; 83:1061-1068. [PMID: 32091903 PMCID: PMC7997626 DOI: 10.1021/acs.jnatprod.9b01068] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
The application of flexible biphenyls as chiroptical probes for the absolute configuration assignment to chiral natural products is described. The method is straightforward and reliable and can be applied to conformationally mobile and ECD silent compounds, not treatable by computational analysis of chiroptical data. By this approach, the (6'R) absolute configuration of the phytotoxin colletochlorin A (1) was confirmed, while the absolute configuration of the phytotoxin agropyrenol (2), previously assigned by the NMR Mosher method, was revised and assigned as (3'S,4'S). Moreover, with the biphenyl method the configurational assignment can be obtained simply by the sign of a diagnostic Cotton effect at 250 nm in the ECD spectrum, thus allowing application without the need of advanced knowledge of chiroptical spectroscopy and computational protocols.
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Affiliation(s)
- Ernesto Santoro
- Department
of Sciences, University of Basilicata, Viale dell’Ateneo Lucano
10, 85100 Potenza, Italy
| | - Stefania Vergura
- Department
of Sciences, University of Basilicata, Viale dell’Ateneo Lucano
10, 85100 Potenza, Italy
| | - Patrizia Scafato
- Department
of Sciences, University of Basilicata, Viale dell’Ateneo Lucano
10, 85100 Potenza, Italy
| | - Sandra Belviso
- Department
of Sciences, University of Basilicata, Viale dell’Ateneo Lucano
10, 85100 Potenza, Italy
| | - Marco Masi
- Department
of Chemical Sciences, University of Naples
Federico II, Complesso Universitario Monte San’Angelo, Via Cintia 4, 80126 Napoli, Italy
| | - Antonio Evidente
- Department
of Chemical Sciences, University of Naples
Federico II, Complesso Universitario Monte San’Angelo, Via Cintia 4, 80126 Napoli, Italy
| | - Stefano Superchi
- Department
of Sciences, University of Basilicata, Viale dell’Ateneo Lucano
10, 85100 Potenza, Italy
- Tel: +39-0971-20-6098. Fax: +39-0971-20-5678.
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17
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Dalinova A, Dubovik V, Chisty L, Kochura D, Ivanov A, Smirnov S, Petrova M, Zolotarev A, Evidente A, Berestetskiy A. Stagonolides J and K and Stagochromene A, Two New Natural Substituted Nonenolides and a New Disubstituted Chromene-4,5-dione Isolated from Stagonospora cirsii S-47 Proposed for the Biocontrol of Sonchus arvensis. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2019; 67:13040-13050. [PMID: 31670962 DOI: 10.1021/acs.jafc.9b04573] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Two new natural 10-membered macrolides (1, 2) and one chromene-4,5-dione derivative (3), named stagonolides J and K and stagochromene A, respectively, were isolated from the phytopathogenic fungus Stagonospora cirsii S-47, together with two known compounds, stagonolide A (4) and herbarumin I (5). Stagonolides J and K and stagochromene A were characterized as (5E,7R*,8S*,9R*)-7,8-dihydroxy-9-propyl-5-nonen-9-olide, (5E,7R,9S)-7-hydroxy-9-propyl-5-nonen-9-olide, and (2R*,3R*)-3-hydroxy-2-propyltetrahydro-2H-chromene-4,5(3H,4aH)-dione, respectively, by spectroscopic (mostly by NMR and ESIMS) data. Compounds 1-5 showed different rates of phytotoxic activity on punctured leaf discs of Sonchus arvensis. The antimicrobial, cytotoxic, and antiprotozoal activity of isolated compounds was also evaluated. Based on our data, stagonolide K and herbarumin I can be proposed as a potential scaffold for the development of a new natural herbicide and estimated as possible selection/quality markers of a bioherbicide based on S. cirsii, while stagonolide A can be considered as a mycotoxin.
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Affiliation(s)
- Anna Dalinova
- All-Russian Institute of Plant Protection , Russian Academy of Agricultural Sciences , Podbelskogo st., 3 , Pushkin , Saint-Petersburg 196608 , Russian Federation
| | - Vsevolod Dubovik
- All-Russian Institute of Plant Protection , Russian Academy of Agricultural Sciences , Podbelskogo st., 3 , Pushkin , Saint-Petersburg 196608 , Russian Federation
- Higher School of Technology and Energy (HSTE) , Saint Petersburg State University of Technology and Design , Ivana Chernyh st., 4 , Saint-Petersburg 198095 , Russian Federation
| | - Leonid Chisty
- Research Institute of Hygiene, Occupational Pathology and Human Ecology , Federal Medical Biological Agency , p/o Kuz'molovsky, Kapitolovo, 93 , Saint-Petersburg 188663 , Russian Federation
| | - Dmitriy Kochura
- Research Institute of Hygiene, Occupational Pathology and Human Ecology , Federal Medical Biological Agency , p/o Kuz'molovsky, Kapitolovo, 93 , Saint-Petersburg 188663 , Russian Federation
| | - Alexander Ivanov
- St. Petersburg State University , Universitetsky Av. 26 , St. Petersburg 198504 , Russian Federation
| | - Sergey Smirnov
- St. Petersburg State University , Universitetsky Av. 26 , St. Petersburg 198504 , Russian Federation
| | - Maria Petrova
- All-Russian Institute of Plant Protection , Russian Academy of Agricultural Sciences , Podbelskogo st., 3 , Pushkin , Saint-Petersburg 196608 , Russian Federation
| | - Andrey Zolotarev
- St. Petersburg State University , Universitetsky Av. 26 , St. Petersburg 198504 , Russian Federation
| | - Antonio Evidente
- Dipartimento di Scienze Chimiche , Università di Napoli Federico II, Complesso Universitario Monte Sant'Angelo , Via. Cintia 4 , 80126 Napoli , Italy
| | - Alexander Berestetskiy
- All-Russian Institute of Plant Protection , Russian Academy of Agricultural Sciences , Podbelskogo st., 3 , Pushkin , Saint-Petersburg 196608 , Russian Federation
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18
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Inuloxin E, a New Seco-Eudesmanolide Isolated from Dittrichia viscosa, Stimulating Orobanche cumana Seed Germination. Molecules 2019; 24:molecules24193479. [PMID: 31557920 PMCID: PMC6803869 DOI: 10.3390/molecules24193479] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2019] [Revised: 09/23/2019] [Accepted: 09/24/2019] [Indexed: 12/16/2022] Open
Abstract
A new sesquiterpenoid belonging to the subgroup seco-eudesmanolides and named inuloxin E was isolated from Dittrichia viscosa, together with the already known sesquiterpenoids inuloxins A–D and α-costic acid. Inuloxin E was characterized by spectroscopic data (essentially NMR and ESI MS) as 3-methylene-6-(1-methyl-4-oxo-pentyl)-3a,4,7,7a-tetrahydro-3H-benzofuran-2-one. Its relative configuration was determined by comparison with the closely related inuloxin D and chemical conversion of inuloxin E into inuloxin D and by the observed significant correlation in the NOESY spectrum. Both inuloxins D and E induced germination of the parasitic weed Orobanche cumana, but were inactive on the seeds of Orobanche minor and Phelipanche ramosa. The germination activity of some hemisynthetic esters of inuloxin D was also investigated.
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19
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Jiang D, Dong F, Xu J, Liu X, Wu X, Pan X, Tao Y, Li R, Zheng Y. Enantioselective Separation and Dissipation of Prothioconazole and Its Major Metabolite Prothioconazole-desthio Enantiomers in Tomato, Cucumber, and Pepper. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2019; 67:10256-10264. [PMID: 31433628 DOI: 10.1021/acs.jafc.9b03607] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
In this study, a simple and effective chiral analytical method was developed to monitor prothioconazole and prothioconazole-desthio at the enantiomeric level using supercritical fluid chromatography-tandem triple quadrupole mass spectrometry. The baseline enantioseparation for prothioconazole and prothioconazole-desthio was achieved within 2 min on a Chiralcel OD-3 column with CO2/0.2% acetic acid-5 mmol/L ammonium acetate 2-propanol (85:15, v/v) as the mobile phase at a flow rate of 1.5 mL/min and column temperature of 25 °C. The limit of quantitation for each enantiomer was 5 μg/kg, with a baseline resolution of >3.0. The results of enantioselective dissipation showed that R-(-)-prothioconazole was preferentially degraded in tomato, cucumber, and pepper under greenhouse conditions. S-(-)-prothioconazole-desthio was preferentially degraded in tomato and cucumber; however, R-(+)-prothioconazole-desthio was preferentially degraded in pepper. Results of this study may help to facilitate more accurate risk assessment of prothioconazole and its major metabolite in agricultural products.
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Affiliation(s)
- Duoduo Jiang
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection , Chinese Academy of Agricultural Sciences , Beijing 100193 , P. R. China
| | - Fengshou Dong
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection , Chinese Academy of Agricultural Sciences , Beijing 100193 , P. R. China
| | - Jun Xu
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection , Chinese Academy of Agricultural Sciences , Beijing 100193 , P. R. China
| | - Xingang Liu
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection , Chinese Academy of Agricultural Sciences , Beijing 100193 , P. R. China
| | - Xiaohu Wu
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection , Chinese Academy of Agricultural Sciences , Beijing 100193 , P. R. China
| | - Xinglu Pan
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection , Chinese Academy of Agricultural Sciences , Beijing 100193 , P. R. China
| | - Yan Tao
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection , Chinese Academy of Agricultural Sciences , Beijing 100193 , P. R. China
| | - Runan Li
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection , Chinese Academy of Agricultural Sciences , Beijing 100193 , P. R. China
| | - Yongquan Zheng
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection , Chinese Academy of Agricultural Sciences , Beijing 100193 , P. R. China
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20
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Assignment Through Chiroptical Methods of The Absolute Configuration of Fungal Dihydropyranpyran-4-5-Diones Phytotoxins, Potential Herbicides for Buffelgrass ( Cenchrus ciliaris) Biocontrol. Molecules 2019; 24:molecules24173022. [PMID: 31438466 PMCID: PMC6749493 DOI: 10.3390/molecules24173022] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2019] [Revised: 08/13/2019] [Accepted: 08/15/2019] [Indexed: 01/30/2023] Open
Abstract
Radicinin and cochliotoxin (1 and 2) two phytotoxic pyranpyran-4,5-diones were isolated together with their close metabolites 3-epi-radicinin, radicinol, and its 3-epimer (3-5), from the culture filtrates of Cochliobolus australiensis, a fungus proposed as mycoherbcide for biocontrol of buffelgrass, a very noxious and dangerous weed. The absolute configuration of cochliotoxin was determined by chiroptical Optical Rotatory Dispersion (ORD), Electronic Circular Dichroism (ECD), and Vibrational Circular Dichroism (VCD)) and computational methods. The same methods were used to confirm that of radicinin, radicinol and their 3-epimers, previously determined with chemical, spectroscopic and ECD methods.
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21
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Cimmino A, Freda F, Santoro E, Superchi S, Evidente A, Cristofaro M, Masi M. α-Costic acid, a plant sesquiterpene with acaricidal activity against Varroa destructor parasitizing the honey bee. Nat Prod Res 2019; 35:1428-1435. [PMID: 31418584 DOI: 10.1080/14786419.2019.1652291] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
The organic extract of the aerial parts of Dittrichia viscosa, a perennial native plant of the Mediterranean basin, showed a significant acaricidal activity against Varroa destructor, the parasite mite of Apis mellifera, commonly called honey bee. Among the metabolites isolated from the organic extract of this Asteraceae, α-costic acid showed to be one of the compounds responsible for the toxic activity exhibited by the crude plant extract on this parasite mite species. In addition to the toxic effect a clear acaricidal response has been recorded when the parasitic mite was exposed to 1 mg/mL concentration of α-costic acid while no effects have been showed on honey bees using the same compound at the same concentration. This finding suggests a potential use of α-costic acid to control Varroa mites. The possibility to reliably achieve absolute configuration of α-costic acid by DFT computational analysis of chiroptical spectra has been also demonstrated.†.
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Affiliation(s)
- Alessio Cimmino
- Department of Chemical Sciences, University of Naples "Federico II", Complesso Universitario Monte S. Angelo, Napoli, Italy
| | | | - Ernesto Santoro
- Dipartimento di Scienze, Università della Basilicata, Potenza, Italy
| | - Stefano Superchi
- Dipartimento di Scienze, Università della Basilicata, Potenza, Italy
| | - Antonio Evidente
- Department of Chemical Sciences, University of Naples "Federico II", Complesso Universitario Monte S. Angelo, Napoli, Italy
| | - Massimo Cristofaro
- BBCA onlus, Rome, Italy.,ENEA C.R. Casaccia, SSPT-BIOAG-PROBIO, Rome, Italy
| | - Marco Masi
- Department of Chemical Sciences, University of Naples "Federico II", Complesso Universitario Monte S. Angelo, Napoli, Italy
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22
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Lazzara NC, Rosano RJ, Vagadia PP, Giovine MT, Bezpalko MW, Piro NA, Kassel WS, Boyko WJ, Zubris DL, Schrader KK, Wedge DE, Duke SO, Giuliano RM. Synthesis and Biological Evaluation of 6-[(1R)-1-Hydroxyethyl]-2,4a(R),6(S),8a(R)-tetrahydropyrano-[3,2-b]-pyran-2-one and Structural Analogues of the Putative Structure of Diplopyrone. J Org Chem 2018; 84:666-678. [DOI: 10.1021/acs.joc.8b02490] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Nicholas C. Lazzara
- Department of Chemistry, Villanova University, Villanova, Pennsylvania 19085, United States
| | - Robert J. Rosano
- Department of Chemistry, Villanova University, Villanova, Pennsylvania 19085, United States
| | - Purav P. Vagadia
- Department of Chemistry, Villanova University, Villanova, Pennsylvania 19085, United States
| | - Matthew T. Giovine
- Department of Chemistry, Villanova University, Villanova, Pennsylvania 19085, United States
| | - Mark W. Bezpalko
- Department of Chemistry, Villanova University, Villanova, Pennsylvania 19085, United States
| | - Nicholas A. Piro
- Department of Chemistry, Villanova University, Villanova, Pennsylvania 19085, United States
| | - Wm. Scott Kassel
- Department of Chemistry, Villanova University, Villanova, Pennsylvania 19085, United States
| | - Walter J. Boyko
- Department of Chemistry, Villanova University, Villanova, Pennsylvania 19085, United States
| | - Deanna L. Zubris
- Department of Chemistry, Villanova University, Villanova, Pennsylvania 19085, United States
| | - Kevin K. Schrader
- Natural Products Utilization Research Unit, Agricultural Research Service, U.S. Department of Agriculture, P.O. Box 1848, University, Mississippi 38677, United States
| | - David E. Wedge
- Natural Products Utilization Research Unit, Agricultural Research Service, U.S. Department of Agriculture, P.O. Box 1848, University, Mississippi 38677, United States
| | - Stephen O. Duke
- Natural Products Utilization Research Unit, Agricultural Research Service, U.S. Department of Agriculture, P.O. Box 1848, University, Mississippi 38677, United States
| | - Robert M. Giuliano
- Department of Chemistry, Villanova University, Villanova, Pennsylvania 19085, United States
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23
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Johnson JL, Raghavan V, Cimmino A, Moeini A, Petrovic AG, Santoro E, Superchi S, Berova N, Evidente A, Polavarapu PL. Absolute configurations of chiral molecules with multiple stereogenic centers without prior knowledge of the relative configurations: A case study of inuloxin C. Chirality 2018; 30:1206-1214. [DOI: 10.1002/chir.23013] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2018] [Revised: 07/13/2018] [Accepted: 08/10/2018] [Indexed: 12/20/2022]
Affiliation(s)
| | - Vijay Raghavan
- Department of Chemistry Vanderbilt University Nashville TN USA
| | - Alessio Cimmino
- Department of Chemical Science University of Naples Federico II Naples Italy
| | - Arash Moeini
- Department of Chemical Science University of Naples Federico II Naples Italy
| | - Ana G. Petrovic
- Department of Chemistry Columbia University New York NY USA
- Department of Life Sciences New York Institute of Technology New York NY USA
| | - Ernesto Santoro
- Department of Science University of Basilicata Potenza Italy
| | | | - Nina Berova
- Department of Chemistry Columbia University New York NY USA
| | - Antonio Evidente
- Department of Chemical Science University of Naples Federico II Naples Italy
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24
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Reveglia P, Cimmino A, Masi M, Nocera P, Berova N, Ellestad G, Evidente A. Pimarane diterpenes: Natural source, stereochemical configuration, and biological activity. Chirality 2018; 30:1115-1134. [DOI: 10.1002/chir.23009] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2018] [Revised: 07/16/2018] [Accepted: 07/25/2018] [Indexed: 01/18/2023]
Affiliation(s)
- Pierluigi Reveglia
- Dipartimento di Scienze Chimiche Università di Napoli Federico II; Complesso Universitario Monte S. Angelo; Naples Italy
| | - Alessio Cimmino
- Dipartimento di Scienze Chimiche Università di Napoli Federico II; Complesso Universitario Monte S. Angelo; Naples Italy
| | - Marco Masi
- Dipartimento di Scienze Chimiche Università di Napoli Federico II; Complesso Universitario Monte S. Angelo; Naples Italy
| | - Paola Nocera
- Dipartimento di Scienze Chimiche Università di Napoli Federico II; Complesso Universitario Monte S. Angelo; Naples Italy
| | - Nina Berova
- Department of Chemistry; Columbia University; New York NY USA
| | - George Ellestad
- Department of Chemistry; Columbia University; New York NY USA
| | - Antonio Evidente
- Dipartimento di Scienze Chimiche Università di Napoli Federico II; Complesso Universitario Monte S. Angelo; Naples Italy
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25
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Marsico G, Pignataro BA, Masi M, Evidente A, Casella F, Zonno MC, Tak JH, Bloomquist JR, Superchi S, Scafato P. Asymmetric synthesis and structure-activity studies of the fungal metabolites colletorin A, colletochlorin A and their halogenates analogues. Tetrahedron 2018. [DOI: 10.1016/j.tet.2018.05.077] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Chini A, Cimmino A, Masi M, Reveglia P, Nocera P, Solano R, Evidente A. The fungal phytotoxin lasiojasmonate A activates the plant jasmonic acid pathway. JOURNAL OF EXPERIMENTAL BOTANY 2018; 69:3095-3102. [PMID: 29590430 PMCID: PMC5972634 DOI: 10.1093/jxb/ery114] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/09/2023]
Abstract
Jasmonates are signaling compounds that regulate plant responses to stress. Jasmonic acid (JA) is the direct precursor of the bioactive plant hormone JA-isoleucine (JA-Ile), the ligand of the CORONATINE INSENSITIVE 1-jasmonate ZIM-domain (COI1-JAZ) co-receptor complex. JA, its methyl ester, and three furanonyl esters were recently isolated from the grapevine pathogen Lasiodiplodia mediterranea. The JA ester lasiojasmonate A (LasA) is the first reported naturally occurring JA-furanone, and its mode of action has not yet been elucidated. Here, we show that LasA activates many JA-regulated responses in planta, including protein degradation, gene expression, and physiological processes. These in vivo effects require LasA conversion into JA, formation of JA-Ile, and its recognition by the plant JA-Ile perception complex. These findings suggest a mode of action of the natural fungal LasA as an inactive JA pool that can be transformed into the bioactive JA-Ile form. We propose that fungal production of JA derivates such as LasA occurs at late infection stages to induce plant JA responses such as cell death, and can facilitate fungal infection.
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Affiliation(s)
- Andrea Chini
- Department of Plant Molecular Genetics, Centro Nacional de Biotecnología, Consejo Superior de Investigaciones Científicas, Madrid, Spain
- Correspondence: or
| | - Alessio Cimmino
- Dipartimento di Scienze Chimiche, Università di Napoli Federico II, Complesso Universitario Monte Sant’Angelo, Napoli, Italy
| | - Marco Masi
- Dipartimento di Scienze Chimiche, Università di Napoli Federico II, Complesso Universitario Monte Sant’Angelo, Napoli, Italy
| | - Pierluigi Reveglia
- Dipartimento di Scienze Chimiche, Università di Napoli Federico II, Complesso Universitario Monte Sant’Angelo, Napoli, Italy
| | - Paola Nocera
- Dipartimento di Scienze Chimiche, Università di Napoli Federico II, Complesso Universitario Monte Sant’Angelo, Napoli, Italy
| | - Roberto Solano
- Department of Plant Molecular Genetics, Centro Nacional de Biotecnología, Consejo Superior de Investigaciones Científicas, Madrid, Spain
| | - Antonio Evidente
- Dipartimento di Scienze Chimiche, Università di Napoli Federico II, Complesso Universitario Monte Sant’Angelo, Napoli, Italy
- Correspondence: or
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Chagas FO, Pessotti RDC, Caraballo-Rodríguez AM, Pupo MT. Chemical signaling involved in plant-microbe interactions. Chem Soc Rev 2018; 47:1652-1704. [PMID: 29218336 DOI: 10.1039/c7cs00343a] [Citation(s) in RCA: 91] [Impact Index Per Article: 15.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Microorganisms are found everywhere, and they are closely associated with plants. Because the establishment of any plant-microbe association involves chemical communication, understanding crosstalk processes is fundamental to defining the type of relationship. Although several metabolites from plants and microbes have been fully characterized, their roles in the chemical interplay between these partners are not well understood in most cases, and they require further investigation. In this review, we describe different plant-microbe associations from colonization to microbial establishment processes in plants along with future prospects, including agricultural benefits.
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Affiliation(s)
- Fernanda Oliveira Chagas
- Faculdade de Ciências Farmacêuticas de Ribeirão Preto, Universidade de São Paulo (FCFRP-USP), Avenida do Café, s/n, 14040-903, Ribeirão Preto-SP, Brazil.
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Reveglia P, Chini A, Mandoli A, Masi M, Cimmino A, Pescitelli G, Evidente A. Synthesis and mode of action studies of N-[(-)-jasmonyl]-S-tyrosin and ester seiridin jasmonate. PHYTOCHEMISTRY 2018; 147:132-139. [PMID: 29310067 DOI: 10.1016/j.phytochem.2017.12.017] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/21/2017] [Revised: 12/21/2017] [Accepted: 12/23/2017] [Indexed: 06/07/2023]
Abstract
Recent analyses on fungal jasmonic acid (JA)-containing metabolites suggest a mode-of-action of these naturally occurring compounds as inactive storage pools of JA. Plants and/or fungi can catabolize JA into the bioactive jasmonyl-isoleucine (JA-Ile) that in turn activates the JA-Ile-pathway in planta. To extend our knowledge on JA-derivates related to natural occurring JA conjugates, N-[(-)-jasmonyl]-S-tyrosin (JA-Tyr) and the ester JA-Sei between JA and seiridin, a fungal disubstituted furanone, were synthesized. The classical procedures for ester synthesis were applied for compound JA-Sei, while N-[(-)-jasmonyl]-S-tyrosin was synthesized with an optimized procedure. JA-Tyr and JA-Sei were characterized by spectroscopic method (essentially 1D and 2D NMR spectroscopy and ESI-MS) and their stereochemical composition was determined by means of HPLC and circular dichroism analysis. Finally, the activity of these JA-derivates was analyzed in planta. JA-Tyr and JA-Sei trigger JA-regulated plant responses, such as protein degradation and growth inhibition. These effects require the conversion of JA into JA-Ile and its recognition by the plant JA-Ile perception complex COI1-JAZ. Overall, these data suggest a mode-of-action of JA-Tyr and JA-Sei as inactive pool of JA that can be transformed into the bioactive JA-Ile to induce the canonical JA-Ile-pathway.
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Affiliation(s)
- Pierluigi Reveglia
- Dipartimento di Scienze Chimiche, Universita' di Napoli Federico II, Complesso Universitario Monte Sant'Angelo, Via Cintia 4, 80126 Napoli, Italy
| | - Andrea Chini
- Department of Plant Molecular Genetics, Centro Nacional de Biotecnología, Consejo Superior de Investigaciones Científicas, 28049 Madrid, Spain
| | - Alessandro Mandoli
- Dipartimento di Chimica e Chimica Industriale, Università di Pisa, Via Moruzzi 13, 56124 Pisa, Italy
| | - Marco Masi
- Dipartimento di Scienze Chimiche, Universita' di Napoli Federico II, Complesso Universitario Monte Sant'Angelo, Via Cintia 4, 80126 Napoli, Italy
| | - Alessio Cimmino
- Dipartimento di Scienze Chimiche, Universita' di Napoli Federico II, Complesso Universitario Monte Sant'Angelo, Via Cintia 4, 80126 Napoli, Italy
| | - Gennaro Pescitelli
- Dipartimento di Chimica e Chimica Industriale, Università di Pisa, Via Moruzzi 13, 56124 Pisa, Italy
| | - Antonio Evidente
- Dipartimento di Scienze Chimiche, Universita' di Napoli Federico II, Complesso Universitario Monte Sant'Angelo, Via Cintia 4, 80126 Napoli, Italy.
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Mazzeo G, Cimmino A, Masi M, Longhi G, Maddau L, Memo M, Evidente A, Abbate S. Importance and Difficulties in the Use of Chiroptical Methods to Assign the Absolute Configuration of Natural Products: The Case of Phytotoxic Pyrones and Furanones Produced by Diplodia corticola. JOURNAL OF NATURAL PRODUCTS 2017; 80:2406-2415. [PMID: 28901768 DOI: 10.1021/acs.jnatprod.7b00119] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
α-Pyrones and furanones are metabolites produced by Diplodia corticola, a pathogen of cork oak. Previously, the absolute configuration (AC) of diplopyrone was defined by chiroptical methods and Mosher's method. Using X-ray and chiroptical methods, the AC of sapinofuranone C was assigned, while that of the (4S,5S)-enantiomer of sapinofuranone B was established by enantioselective total synthesis. Diplofuranone A and diplobifuranylones A-C ACs are still unassigned. Here electronic and vibrational circular dichroism (ECD and VCD) and optical rotatory dispersion (ORD) spectra are reported and compared with density functional theory computations. The AC of the (4S,5S)-enantiomer of sapinofuranone B and sapinofuranone C is checked for completeness. The AC of diplobifuranylones A-C is assigned as (2S,2'S,5'S,6'S), (2S,2'R,5'S,6'R), and (2S,2'S,5'R,6'R), respectively, with the Mosher's method applied to define the absolute configuration of the carbinol stereogenic carbon. The AC assignment of sapinofuranones is problematic: while diplofuranone A is (4S,9R), sapinofuranones B and C are (4S,5S) according to ORD and VCD, but not to ECD. To eliminate these ambiguities, ECD and VCD spectra of a di-p-bromobenzoate derivative of sapinofuranone C are measured and calculated. For phytotoxicity studies, it is relevant that all six compounds share the S configuration for the stereogenic carbon atom of the lactone moiety.
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Affiliation(s)
- Giuseppe Mazzeo
- Dipartimento di Medicina Molecolare e Traslazionale, Università degli Studi di Brescia , Viale Europa 11, 25123 Brescia, Italy
| | - Alessio Cimmino
- Dipartimento di Scienze Chimiche, Università di Napoli Federico II, Complesso Universitario Monte S. Angelo , Via Cintia 4, 80126 Napoli, Italy
| | - Marco Masi
- Dipartimento di Scienze Chimiche, Università di Napoli Federico II, Complesso Universitario Monte S. Angelo , Via Cintia 4, 80126 Napoli, Italy
| | - Giovanna Longhi
- Dipartimento di Medicina Molecolare e Traslazionale, Università degli Studi di Brescia , Viale Europa 11, 25123 Brescia, Italy
| | - Lucia Maddau
- Dipartimento di Agraria, Sezione di Patologia Vegetale ed Entomologia, Università degli Studi di Sassari , Viale Italia 39, 07100 Sassari, Italy
| | - Maurizio Memo
- Dipartimento di Medicina Molecolare e Traslazionale, Università degli Studi di Brescia , Viale Europa 11, 25123 Brescia, Italy
| | - Antonio Evidente
- Dipartimento di Scienze Chimiche, Università di Napoli Federico II, Complesso Universitario Monte S. Angelo , Via Cintia 4, 80126 Napoli, Italy
| | - Sergio Abbate
- Dipartimento di Medicina Molecolare e Traslazionale, Università degli Studi di Brescia , Viale Europa 11, 25123 Brescia, Italy
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Cimmino A, Masi M, Evidente M, Superchi S, Evidente A. Application of Mosher’s method for absolute configuration assignment to bioactive plants and fungi metabolites. J Pharm Biomed Anal 2017; 144:59-89. [DOI: 10.1016/j.jpba.2017.02.037] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2016] [Revised: 02/13/2017] [Accepted: 02/18/2017] [Indexed: 12/30/2022]
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31
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Masi M, Meyer S, Clement S, Cimmino A, Cristofaro M, Evidente A. Cochliotoxin, a Dihydropyranopyran-4,5-dione, and Its Analogues Produced by Cochliobolus australiensis Display Phytotoxic Activity against Buffelgrass (Cenchrus ciliaris). JOURNAL OF NATURAL PRODUCTS 2017; 80:1241-1247. [PMID: 28422495 DOI: 10.1021/acs.jnatprod.6b00696] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Buffelgrass (Pennisetum ciliare or Cenchrus ciliaris) is a perennial grass that has become highly invasive in the Sonoran Desert of southern Arizona. In the search for novel control strategies against this weed, strains of the foliar fungal pathogen Cochliobolus australiensis from buffelgrass have been screened for their ability to produce phytotoxic metabolites that could potentially be used as natural herbicides in an integrated pest management strategy. A new phytotoxin, named cochliotoxin, was isolated from liquid culture of this fungus together with radicinin, radicinol, and their 3-epimers. Cochliotoxin was characterized, essentially by spectroscopic methods, as 3-hydroxy-2-methyl-7-(3-methyloxiranyl)-2,3-dihydropyrano[4,3-b]pyran-4,5-dione. Its relative stereochemistry was assigned by 1H NMR techniques, while the absolute configuration (2S,3S) was determined applying the advanced Mosher's method by esterification of its hydroxy group at C-3. When bioassayed in a buffelgrass coleoptile elongation test and by leaf puncture bioassay against the host weed and two nontarget grasses, cochliotoxin showed strong phytotoxicity. In the same tests, radicinin and 3-epi-radicinin also showed phytotoxic activity, while radicinol and 3-epi-radicinol were largely inactive. All five compounds were more active in leaf puncture bioassays on buffelgrass than on the nontarget grass tanglehead (Heteropogon contortus), while the nontarget grass Arizona cottontop (Digitaria californica) was more sensitive to radicinin and 3-epi-radicinin. Cochliotoxin at low concentration was significantly more active on buffelgrass than on either native grass, but the difference was small.
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Affiliation(s)
- Marco Masi
- Department of Chemical Sciences, University of Naples "Federico II", Complesso Universitario Monte S. Angelo , Via Cintia 4, 80126 Napoli, Italy
- BBCA Onlus , Via A. Signorelli 105, 00123 Rome, Italy
| | - Susan Meyer
- Shrub Sciences Laboratory, U.S. Forest Service Rocky Mountain Research Station , 735 North 500 East, Provo, Utah 84606, United States
| | - Suzette Clement
- Shrub Sciences Laboratory, U.S. Forest Service Rocky Mountain Research Station , 735 North 500 East, Provo, Utah 84606, United States
| | - Alessio Cimmino
- Department of Chemical Sciences, University of Naples "Federico II", Complesso Universitario Monte S. Angelo , Via Cintia 4, 80126 Napoli, Italy
| | - Massimo Cristofaro
- BBCA Onlus , Via A. Signorelli 105, 00123 Rome, Italy
- ENEA C.R. Casaccia, SSPT-BIOAG-PROBIO , Via Anguillarese 301, 00123 Rome, Italy
| | - Antonio Evidente
- Department of Chemical Sciences, University of Naples "Federico II", Complesso Universitario Monte S. Angelo , Via Cintia 4, 80126 Napoli, Italy
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Gao XF, Nie J, Ouyang XK, Wang YG, Wu WJ. Enantioseparation and enantioselective behavior of trichlorfon enantiomers in sediments. Chirality 2017; 29:140-146. [DOI: 10.1002/chir.22686] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2016] [Revised: 11/16/2016] [Accepted: 02/02/2017] [Indexed: 01/08/2023]
Affiliation(s)
- Xiao-Feng Gao
- School of Food and Pharmacy; Zhejiang Ocean University; Zhoushan P. R China
| | - Jing Nie
- School of Food and Pharmacy; Zhejiang Ocean University; Zhoushan P. R China
| | - Xiao-Kun Ouyang
- School of Food and Pharmacy; Zhejiang Ocean University; Zhoushan P. R China
| | - Yang-Guang Wang
- School of Food and Pharmacy; Zhejiang Ocean University; Zhoushan P. R China
| | - Wei-Jian Wu
- School of Food and Pharmacy; Zhejiang Ocean University; Zhoushan P. R China
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33
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Evidente M, Santoro E, Petrovic AG, Cimmino A, Koshoubu J, Evidente A, Berova N, Superchi S. Absolute configurations of phytotoxic inuloxins B and C based on experimental and computational analysis of chiroptical properties. PHYTOCHEMISTRY 2016; 130:328-34. [PMID: 27498046 DOI: 10.1016/j.phytochem.2016.07.012] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/23/2015] [Revised: 07/03/2016] [Accepted: 07/20/2016] [Indexed: 05/23/2023]
Abstract
The absolute configuration of phytotoxins inuloxins B and C, produced by Inula viscosa, and with potential herbicidal activity for the management of parasitic plants, has been determined by Time-dependent density functional theory computational prediction of electronic circular dichroism and optical rotatory dispersion spectra. The inuloxin B has been converted to its 5-O-acetyl derivative, which due to its more constrained conformational features facilitated the computational analysis of its chiroptical properties. The analysis based on experimental and computed data led to assignment of absolute configuration to naturally occurring (+)-inuloxin B and (-)-inuloxin C as (7R,8R,10S,11S) and (5S,7S,8S,10S), respectively.
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Affiliation(s)
- Marco Evidente
- Department of Chemical Sciences, University of Naples "Federico II", Complesso Universitario Monte S. Angelo, Via Cintia 4, 80126, Napoli, Italy; Department of Chemistry, Columbia University, 3000 Broadway, 3114, New York, NY 10027, USA
| | - Ernesto Santoro
- Department of Sciences, University of Basilicata, Via dell'Ateneo Lucano 10, 85100 Potenza, Italy
| | - Ana G Petrovic
- Department of Chemistry, Columbia University, 3000 Broadway, 3114, New York, NY 10027, USA; Department of Life Sciences, New York Institute of Technology (NYIT), 1855 Broadway, New York, NY 10023, USA
| | - Alessio Cimmino
- Department of Chemical Sciences, University of Naples "Federico II", Complesso Universitario Monte S. Angelo, Via Cintia 4, 80126, Napoli, Italy
| | - Jun Koshoubu
- JASCO Corporation, Hachioji-shi, Tokyo 192-8537, Japan
| | - Antonio Evidente
- Department of Chemical Sciences, University of Naples "Federico II", Complesso Universitario Monte S. Angelo, Via Cintia 4, 80126, Napoli, Italy.
| | - Nina Berova
- Department of Chemistry, Columbia University, 3000 Broadway, 3114, New York, NY 10027, USA.
| | - Stefano Superchi
- Department of Sciences, University of Basilicata, Via dell'Ateneo Lucano 10, 85100 Potenza, Italy.
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Pan X, Dong F, Xu J, Liu X, Chen Z, Zheng Y. Stereoselective analysis of novel chiral fungicide pyrisoxazole in cucumber, tomato and soil under different application methods with supercritical fluid chromatography/tandem mass spectrometry. JOURNAL OF HAZARDOUS MATERIALS 2016; 311:115-124. [PMID: 26970041 DOI: 10.1016/j.jhazmat.2016.03.005] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/30/2015] [Revised: 02/02/2016] [Accepted: 03/02/2016] [Indexed: 06/05/2023]
Abstract
Various new chiral pesticides have been registered and used in crop yields. However, few studies have focused on the environmental behavior of such new registered chiral compounds on the stereoisomer level. In this study, an effective and sensitive chiral analytical method was first developed to detect pyrisoxazole stereoisomers and then further applied to investigate the stereoselective dissipation in vegetables and soil using supercritical fluid chromatography/tandem triple quadrupole mass spectrometry. Optimal separation condition was achieved with IA column using CO2/MeOH (75:25) as mobile phase at 2.0 mL/min in 5 min, 35 °C and 2400 psi. The average recoveries in all of the matrices at four spiking levels ranged from 84.0% to 105.6%. Significant stereoselective dissipation was observed in cucumber and tomato under both application modes. (-) Pyrisoxazole A and (-) pyrisoxazole B were preferentially degraded in cucumber under foliar spraying mode. In contrast, (+) pyrisoxazole A and (-) pyrisoxazole B were preferentially degraded in cucumber under soil irrigation mode. (-) Pyrisoxazole A and (-) pyrisoxazole B were degraded faster than their antipodes in tomato under both application modes. However, no significant stereoselectivity was observed in soil. The results of this study could help facilitate more accurate risk assessments of pyrisoxazole.
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Affiliation(s)
- Xinglu Pan
- State Key Laboratory for Biology of Plant Disease and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, 100193, PR China
| | - Fengshou Dong
- State Key Laboratory for Biology of Plant Disease and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, 100193, PR China
| | - Jun Xu
- State Key Laboratory for Biology of Plant Disease and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, 100193, PR China
| | - Xingang Liu
- State Key Laboratory for Biology of Plant Disease and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, 100193, PR China
| | - Zenglong Chen
- State Key Laboratory for Biology of Plant Disease and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, 100193, PR China
| | - Yongquan Zheng
- State Key Laboratory for Biology of Plant Disease and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, 100193, PR China.
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Li H, Peng SY, Yang DP, Bai B, Zhu LP, Mu CY, Tian YJ, Wang DM, Zhao ZM. Enantiomeric Neolignans and a Sesquiterpene from Solanum erianthum and Their Absolute Configuration Assignment. Chirality 2016; 28:259-63. [PMID: 26781827 DOI: 10.1002/chir.22571] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2015] [Revised: 11/30/2015] [Accepted: 12/01/2015] [Indexed: 11/09/2022]
Abstract
One pair of new C-8-C-3'/C-7-O-C-4' linked neolignan enantiomers (1a/1b) and one new guaiane sesquiterpene (2) first featuring the 1(2),9(10)-conjugated double bond were isolated from the stems of Solanum erianthum (Solanceae). Their structures were characterized on the basis of extensive spectroscopic analyses, especially from their 2D nuclear magnetic resonance (NMR) spectra. The absolute configurations of 1a/2b were rigorously elucidated by electronic circular dichroism (ECD) experiments combined with the reversed helicity rule for the 2,3-dihydrobenzo[b]furan chromophore, and compound 2 is the first report on the sterochemical assignment of a guaiane sesquiterpene by using the allylic axial chirality rule for the conjugated diene chromophore in combination with the calculated ECD spectrum.
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Affiliation(s)
- Hang Li
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, Guangdong, People's Republic of China
| | - Shi-Yi Peng
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, Guangdong, People's Republic of China
| | - De-Po Yang
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, Guangdong, People's Republic of China.,Guangdong Technology Research Center for Advanced Chinese Medicine, Guangzhou, Guangdong, People's Republic of China
| | - Bai Bai
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, Guangdong, People's Republic of China
| | - Long-Ping Zhu
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, Guangdong, People's Republic of China.,Guangdong Technology Research Center for Advanced Chinese Medicine, Guangzhou, Guangdong, People's Republic of China
| | - Chun-You Mu
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, Guangdong, People's Republic of China
| | - Yi-Jing Tian
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, Guangdong, People's Republic of China
| | - Dong-Mei Wang
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, Guangdong, People's Republic of China.,Guangdong Technology Research Center for Advanced Chinese Medicine, Guangzhou, Guangdong, People's Republic of China
| | - Zhi-Min Zhao
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, Guangdong, People's Republic of China.,Guangdong Technology Research Center for Advanced Chinese Medicine, Guangzhou, Guangdong, People's Republic of China
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Masi M, Maddau L, Linaldeddu BT, Cimmino A, D'Amico W, Scanu B, Evidente M, Tuzi A, Evidente A. Bioactive Secondary Metabolites Produced by the Oak Pathogen Diplodia corticola. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2016; 64:217-225. [PMID: 26671545 DOI: 10.1021/acs.jafc.5b05170] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Three new lactones and a new fatty acid ester, named sapinofuranones C and D, diplopyrone B, and diplobifuranylone C, respectively, were isolated from Diplodia corticola, together with sphaeropsidins A and C, diplopyrone, diplobifuranylones A and B, diplofuranone A, and the (S,S)-enantiomer of sapinofuranone B. Sapinofuranones C and D, diplopyrone B, and diplobifuranylone C were characterized as (5S)-5-((1,S-1,6-dihydroxyhexa-2,4-dienyl)-dihydrofuran-2-one, 4,5-dihydroxy-deca-6,8-dienoic acid methyl ester, (5S)-5-hydroxy-6-(penta-1,3-dienyl)-5,6-dihydro-pyran-2-one, and 5'-((1R)-1-hydroxyethyl)-2',5'-dihydro-2H-[2,2']bifuranyl-5-one by spectroscopic and chemical methods, respectively. The relative configuration of sapinofuranone C was assigned by X-ray diffraction analysis, whereas its absolute configuration was determined by applying the advanced Mosher's method to its 11-O-p-bromobenzoyl derivative. The same method was used to assign the absolute configuration to C-5 of diplopyrone B and to that of the hydroxyethyl of the side chain of diplobifuranylone C, respectively. The metabolites isolated were tested at 1 mg/mL on leaves of cork oak, grapevine cv. 'Cannonau', and tomato using the leaf puncture assay. They were also tested on tomato cuttings at 0.2, 0.1, and 0.05 mg/mL. Each compound was tested for zootoxic activity on Artemia salina L. larvae. The efficacy of sapinofuranone C and diplopyrone B on three plant pathogens, namely, Athelia rolfsii, Fusarium avenaceum, and Phytophthora nicotianae was also evaluated. In all phytotoxic assays only diplopyrone B was found to be active. It also showed strong inhibition on the vegetative growth of A. rolfsii and P. nicotianae. All metabolites were inactive in the assay performed for the zootoxic activity (A. salina) even at the highest concentration used (200 μg/mL). Diplopyrone B showed a promising antioomycete activity for the control of Phytophthora spp. also taking into account the absence of zootoxic activity.
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Affiliation(s)
- Marco Masi
- Dipartimento di Scienze Chimiche, Università di Napoli Federico II , Complesso Universitario Monte Sant'Angelo, Via Cintia 4, 80126 Napoli, Italy
| | - Lucia Maddau
- Dipartimento di Agraria, Sezione di Patologia Vegetale ed Entomologia, Università degli Studi di Sassari , Viale Italia 39, 07100 Sassari, Italy
| | - Benedetto Teodoro Linaldeddu
- Dipartimento di Agraria, Sezione di Patologia Vegetale ed Entomologia, Università degli Studi di Sassari , Viale Italia 39, 07100 Sassari, Italy
| | - Alessio Cimmino
- Dipartimento di Scienze Chimiche, Università di Napoli Federico II , Complesso Universitario Monte Sant'Angelo, Via Cintia 4, 80126 Napoli, Italy
| | - Wanda D'Amico
- Dipartimento di Scienze Chimiche, Università di Napoli Federico II , Complesso Universitario Monte Sant'Angelo, Via Cintia 4, 80126 Napoli, Italy
| | - Bruno Scanu
- Dipartimento di Agraria, Sezione di Patologia Vegetale ed Entomologia, Università degli Studi di Sassari , Viale Italia 39, 07100 Sassari, Italy
| | - Marco Evidente
- Dipartimento di Scienze Chimiche, Università di Napoli Federico II , Complesso Universitario Monte Sant'Angelo, Via Cintia 4, 80126 Napoli, Italy
| | - Angela Tuzi
- Dipartimento di Scienze Chimiche, Università di Napoli Federico II , Complesso Universitario Monte Sant'Angelo, Via Cintia 4, 80126 Napoli, Italy
| | - Antonio Evidente
- Dipartimento di Scienze Chimiche, Università di Napoli Federico II , Complesso Universitario Monte Sant'Angelo, Via Cintia 4, 80126 Napoli, Italy
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Cimmino A, Masi M, Evidente M, Superchi S, Evidente A. Fungal phytotoxins with potential herbicidal activity: chemical and biological characterization. Nat Prod Rep 2015; 32:1629-53. [PMID: 26443032 DOI: 10.1039/c5np00081e] [Citation(s) in RCA: 108] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Covering: 2007 to 2015 Fungal phytotoxins are secondary metabolites playing an important role in the induction of disease symptoms interfering with host plant physiological processes. Although fungal pathogens represent a heavy constraint for agrarian production and for forest and environmental heritage, they can also represent an ecofriendly alternative to manage weeds. Indeed, the phytotoxins produced by weed pathogenic fungi are an efficient tool to design natural, safe bioherbicides. Their use could avoid that of synthetic pesticides causing resistance in the host plants and the long term impact of residues in agricultural products with a risk to human and animal health. The isolation and structural and biological characterization of phytotoxins produced by pathogenic fungi for weeds, including parasitic plants, are described. Structure activity relationships and mode of action studies for some phytotoxins are also reported to elucidate the herbicide potential of these promising fungal metabolites.
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Affiliation(s)
- Alessio Cimmino
- Dipartimento di Scienze Chimiche, Università di Napoli Federico II, Complesso Universitario Monte S. Angelo, Via Cintia 4, 80126 Napoli, Italy
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Santoro E, Mazzeo G, Petrovic AG, Cimmino A, Koshoubu J, Evidente A, Berova N, Superchi S. Absolute configurations of phytotoxins seiricardine A and inuloxin A obtained by chiroptical studies. PHYTOCHEMISTRY 2015; 116:359-366. [PMID: 25817835 DOI: 10.1016/j.phytochem.2015.03.001] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/25/2014] [Revised: 03/01/2015] [Accepted: 03/03/2015] [Indexed: 05/23/2023]
Abstract
The absolute configuration (AC) of the plant phytotoxin inuloxin A, produced by Inula viscosa, and of the fungal phytotoxin seiricardine A, obtained from Seiridium fungi, pathogen for cypress, has been determined by experimental measurements and theoretical simulations of chiroptical properties of three related methods, namely, Optical Rotatory Dispersion (ORD), Electronic Circular Dichroism (ECD), and Vibrational Circular Dichroism (VCD). Computational prediction by Density Functional Theory (DFT) of VCD spectra and by Time-dependent DFT (TDDFT) of ORD and ECD spectra allowed to assign (7R,8R,10S) AC to naturally occurring (+)-inuloxin A. In the case of compound (-)-seiricardine A, which lacks useful for the analysis UV-Vis absorption, and thus provides a hardly detectable ECD spectrum and quite low ORD values, an introduction of a suitable chromophore by chemical derivatization was performed. The corresponding derivative, 2-O-p-bromobenzoate ester, gave rise to an intense ECD spectrum and higher ORD and VCD values. The comparison of computed spectra with the experimental ones allowed to assign (1S,2R,3aS,4S,5R,7aS) AC to (-)-2-O-p-bromobenzoate ester of seiricardine A and then to (-)-seiricardine A. This study further supports a recent trend of concerted application of more than a single chiroptical technique toward an unambiguous assignment of AC of flexible and complex natural products. Moreover, the use of chemical derivatization, with insertion of suitable chromophoric moieties has allowed to treat also UV-Vis transparent molecules by ECD and ORD spectroscopies.
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Affiliation(s)
- Ernesto Santoro
- Dipartimento di Scienze, Università della Basilicata, via dell'Ateneo Lucano 10, 85100 Potenza, Italy
| | - Giuseppe Mazzeo
- Dipartimento di Medicina Molecolare e Traslazionale, Università di Brescia, Viale Europa 11, 25123 Brescia, Italy
| | - Ana G Petrovic
- Department of Life Sciences, New York Institute of Technology (NYIT), 1855 Broadway, New York, NY 10023, USA
| | - Alessio Cimmino
- Dipartimento di Scienze Chimiche, Università di Napoli Federico II, Complesso Universitario Monte S. Angelo, Via Cintia 4, 80126 Napoli, Italy
| | - Jun Koshoubu
- JASCO Corporation, Hachioji-shi, Tokyo 192-8537, Japan
| | - Antonio Evidente
- Dipartimento di Scienze Chimiche, Università di Napoli Federico II, Complesso Universitario Monte S. Angelo, Via Cintia 4, 80126 Napoli, Italy.
| | - Nina Berova
- Department of Chemistry, Columbia University, 3000 Broadway, 3114, New York, NY 10027, USA.
| | - Stefano Superchi
- Dipartimento di Scienze, Università della Basilicata, via dell'Ateneo Lucano 10, 85100 Potenza, Italy.
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Enantioseparation and Determination of the Chiral Fungicide Furametpyr Enantiomers in Rice, Soil, and Water by High-Performance Liquid Chromatography. Chirality 2013; 25:904-9. [DOI: 10.1002/chir.22232] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2013] [Accepted: 07/19/2013] [Indexed: 01/14/2023]
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