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{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2023,4,18]],"date-time":"2023-04-18T05:09:14Z","timestamp":1681794554738},"reference-count":86,"publisher":"MDPI AG","issue":"4","license":[{"start":{"date-parts":[[2023,4,14]],"date-time":"2023-04-14T00:00:00Z","timestamp":1681430400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100002347","name":"Indonesian Plant Biodiversity and Human Health\u2014BIOHEALTH","doi-asserted-by":"publisher","award":["16GW0120K","16GW0123"]},{"name":"EFRE and the state Saxony-Anhalt","award":["ZS\/2018\/11\/95581"]},{"DOI":"10.13039\/501100001655","name":"German Academic Exchange Service","doi-asserted-by":"publisher","award":["91653688"]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Marine Drugs"],"abstract":"<jats:p>The previously undescribed natural product lumnitzeralactone (1), which represents a derivative of ellagic acid, was isolated from the anti-bacterial extract of the Indonesian mangrove species Lumnitzera racemosa Willd. The structure of lumnitzeralactone (1), a proton-deficient and highly challenging condensed aromatic ring system, was unambiguously elucidated by extensive spectroscopic analyses involving high-resolution mass spectrometry (HRMS), 1D 1H and 13C nuclear magnetic resonance spectroscopy (NMR), and 2D NMR (including 1,1-ADEQUATE and 1,n-ADEQUATE). Determination of the structure was supported by computer-assisted structure elucidation (CASE system applying ACD-SE), density functional theory (DFT) calculations, and a two-step chemical synthesis. Possible biosynthetic pathways involving mangrove-associated fungi have been suggested.<\/jats:p>","DOI":"10.3390\/md21040242","type":"journal-article","created":{"date-parts":[[2023,4,14]],"date-time":"2023-04-14T14:29:16Z","timestamp":1681482556000},"page":"242","source":"Crossref","is-referenced-by-count":0,"title":["Challenging Structure Elucidation of Lumnitzeralactone, an Ellagic Acid Derivative from the Mangrove Lumnitzera racemosa"],"prefix":"10.3390","volume":"21","author":[{"given":"Jonas","family":"Kappen","sequence":"first","affiliation":[{"name":"Department of Bioorganic Chemistry, Leibniz Institute of Plant Biochemistry (IPB), Weinberg 3, 06120 Halle (Saale), Germany"}]},{"ORCID":"http:\/\/orcid.org\/0000-0003-3406-0960","authenticated-orcid":false,"given":"Jeprianto","family":"Manurung","sequence":"additional","affiliation":[{"name":"Department of Bioorganic Chemistry, Leibniz Institute of Plant Biochemistry (IPB), Weinberg 3, 06120 Halle (Saale), Germany"},{"name":"Department of Molecular Evolution and Plant Systematics & Herbarium (LZ), Institute of Biology, Leipzig University, Johannisallee 21-23, 04103 Leipzig, Germany"},{"name":"German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, Puschstra\u00dfe 4, 04103 Leipzig, Germany"}]},{"given":"Tristan","family":"Fuchs","sequence":"additional","affiliation":[{"name":"Department of Bioorganic Chemistry, Leibniz Institute of Plant Biochemistry (IPB), Weinberg 3, 06120 Halle (Saale), Germany"}]},{"given":"Sahithya Phani Babu","family":"Vemulapalli","sequence":"additional","affiliation":[{"name":"Department of NMR-Based Structural Biology, Max Planck Institute for Multidisciplinary Sciences, Am Fassberg 11, 37077 G\u00f6ttingen, Germany"},{"name":"Research Group for Marine Geochemistry, Institute for Chemistry and Biology of the Marine Environment (ICBM), Carl von Ossietzky Universit\u00e4t Oldenburg, Carl-von-Ossietzky-Str. 9-11, 26129 Oldenburg, Germany"}]},{"ORCID":"http:\/\/orcid.org\/0000-0001-5340-8550","authenticated-orcid":false,"given":"Lea M.","family":"Schmitz","sequence":"additional","affiliation":[{"name":"Department of Bioorganic Chemistry, Leibniz Institute of Plant Biochemistry (IPB), Weinberg 3, 06120 Halle (Saale), Germany"}]},{"given":"Andrej","family":"Frolov","sequence":"additional","affiliation":[{"name":"Department of Bioorganic Chemistr
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