Hongbo Dong, Yuanwei You, Xiuli Yang, Ling Mei, Yufei Che, Na Wang, Ting Peng and Yujiao He*,
{"title":"Total Synthesis and Anti-Inflammatory Activity of Tectoridin and Related Isoflavone Glucosides","authors":"Hongbo Dong, Yuanwei You, Xiuli Yang, Ling Mei, Yufei Che, Na Wang, Ting Peng and Yujiao He*, ","doi":"10.1021/acs.jnatprod.4c0110810.1021/acs.jnatprod.4c01108","DOIUrl":"https://doi.org/10.1021/acs.jnatprod.4c01108https://doi.org/10.1021/acs.jnatprod.4c01108","url":null,"abstract":"<p >The first total syntheses of four isoflavone glucosides, tectoridin (<b>1</b>), tectoridin A (<b>2</b>), tectorigenin 7-<i>O</i>-β-<span>d</span>-glucopyranosyl-12-<i>O</i>-β-<span>d</span>-glucopyranoside (<b>3</b>), and isotectroigenin 7-<i>O</i>-β-<span>d</span>-glucopyranoside (<b>4</b>), have been accomplished. Key steps in our synthetic approach include a regioselective halogenation reaction, followed by methanolysis to introduce the −OCH<sub>3</sub> group into isoflavone frameworks and a PTC-promoted stereoselective glycosidation to establish glycosidic bonds. The synthesized isoflavone glucosides (<b>1</b>–<b>4</b>) and their corresponding aglycones (<b>32</b> and <b>34</b>) were evaluated for anti-inflammatory activity against nitric oxide (NO), tumor necrosis factor-α (TNF-α), interleukin-6 (IL-6), and interleukin-1 β (IL-1β) in lipopolysaccharide (LPS)-induced RAW264.7 cells. Aglycones <b>32</b> and <b>34</b> exhibited stronger anti-inflammatory activity <i>in vitro</i> compared to isoflavone glucosides <b>1</b>–<b>4</b>.</p>","PeriodicalId":47,"journal":{"name":"Journal of Natural Products ","volume":"88 1","pages":"94–102 94–102"},"PeriodicalIF":3.3,"publicationDate":"2024-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143086930","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Wencong Yang, Shurong Tian, Yi-Fan Du, Xian-Liang Zeng, Jia-Jing Liang, Wen-Jian Lan, Hang Li
{"title":"Genome Mining of the Marine-Derived Fungus <i>Trichoderma erinaceum</i> F1-1 Unearths Bergamotene-Type Sesquiterpenoids.","authors":"Wencong Yang, Shurong Tian, Yi-Fan Du, Xian-Liang Zeng, Jia-Jing Liang, Wen-Jian Lan, Hang Li","doi":"10.1021/acs.jnatprod.4c00905","DOIUrl":"10.1021/acs.jnatprod.4c00905","url":null,"abstract":"<p><p>Terpenoids are a vast group of natural products known for their remarkable biological properties and structural diversity. UbiA terpene synthases are increasingly recognized for producing various terpenoids. In this study, we identified a biosynthetic gene cluster (<i>bgt</i>) encoding a UbiA terpene synthase BgtA in the genome of the marine-derived fungus <i>Trichoderma erinaceum</i> F1-1. The gene <i>bgtA</i> was validated to encode the biosynthesis of (-)-α-<i>trans</i>-bergamotene (<b>1</b>). Heterologous expression of the <i>bgt</i> gene cluster in the characterized host <i>Aspergillus nidulans</i> LO8030 activated the biosynthetic pathway, leading to the isolation of eight previously undocumented bergamotene-derived sesquiterpenoids (<b>2</b>-<b>9</b>). Their structures, including the absolute configurations, were elucidated by a combination of spectroscopic analysis, ECD spectra, chemical hydrolysis, single-crystal X-ray diffraction, and biosynthetic considerations. We further demonstrated that the production of these structurally intricate sesquiterpenoids in heterologous expression is attributable to the concerted action of the UbiA terpene synthase BgtA, the cytochrome P450 BgtC, and endogenous enzymes. This study underscores the immense biosynthetic potential of fungal UbiA terpene synthase gene clusters and shows genome mining is a promising strategy for the discovery of novel terpenoids from fungi.</p>","PeriodicalId":47,"journal":{"name":"Journal of Natural Products ","volume":" ","pages":"2746-2756"},"PeriodicalIF":3.3,"publicationDate":"2024-12-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142764808","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Discovery, Biosynthesis, Total Synthesis, and Biological Activities of Solanapyrones: [4 + 2] Cycloaddition-Derived Polyketides of Fungal Origin.","authors":"Roberto G S Berlinck, Elizabeth Skellam","doi":"10.1021/acs.jnatprod.4c00818","DOIUrl":"10.1021/acs.jnatprod.4c00818","url":null,"abstract":"<p><p>Solanapyrones are metabolites bearing a 3,4-dehydrodecalin moiety isolated from cultures of different fungi that are associated with plant diseases. Research on solanapyrones resulted in the first report of a Diels-Alderase enzyme implicated in natural product biosynthesis related to the formation of the 3,4-dehydrodecalin core. In addition, several total syntheses of solanapyrones have been reported, which are also connected with the formation of the characteristic cycloaddition-derived 3,4-dehydrodecalin moiety. This Review provides the first comprehensive overview on the chemistry, biosynthesis, and biological activities of solanapyrones under the theme of synthetic and biosynthetic research progress on cycloaddition-derived secondary metabolites.</p>","PeriodicalId":47,"journal":{"name":"Journal of Natural Products ","volume":" ","pages":"2892-2906"},"PeriodicalIF":3.3,"publicationDate":"2024-12-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11686517/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142638035","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Erik Laurini, Stéphane Andreani, Alain Muselli, Sabrina Pricl, Aura Tintaru
{"title":"Direct Identification of α-Bisabolol Enantiomers in an Essential Oil Using a Combined Ion Mobility-Mass Spectrometry/Quantum Chemistry Approach.","authors":"Erik Laurini, Stéphane Andreani, Alain Muselli, Sabrina Pricl, Aura Tintaru","doi":"10.1021/acs.jnatprod.9b00982","DOIUrl":"10.1021/acs.jnatprod.9b00982","url":null,"abstract":"<p><p>Enantiomer-specific identification of chiral molecules in natural extracts is a challenging task, as many routine analytical techniques fail to provide selectivity in multicomponent mixtures. Here we describe an alternative approach, based on the combination of ion mobility-mass spectrometry (IM-MS) and quantum chemistry (QM), for the direct enantiomers differentiation in crude essential oils. The identification of α-bisabolol enantiomers contained in the raw essential oil (EO) from the Corsican <i>Xanthium italicum</i> fruits is reported as a proof-of-concept. Accordingly, IM-MS experiments performed in Ag<sup>+</sup>-doped methanol revealed the presence of both (+)- and (-)-α-bisabolol in the EO, while molecular simulations provided the structures of the two α-bisabolol enantiomer silver(I) adducts.</p>","PeriodicalId":47,"journal":{"name":"Journal of Natural Products ","volume":" ","pages":"2887-2891"},"PeriodicalIF":3.3,"publicationDate":"2024-12-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"37771084","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
João P A Reis, Sara Freitas, Tereza Procházková, Pedro N Leão
{"title":"Expanding the Diversity of the Cyanobacterial Dialkylresorcinol Bartoloside Family.","authors":"João P A Reis, Sara Freitas, Tereza Procházková, Pedro N Leão","doi":"10.1021/acs.jnatprod.4c00832","DOIUrl":"10.1021/acs.jnatprod.4c00832","url":null,"abstract":"<p><p>The cyanobacterial dialkylresorcinol bartolosides were initially reported to feature glycosylated and halogenated moieties. Later, biosynthetic and <i>in vitro</i> studies showed that the chlorinated alkyl chains are utilized for a nucleophilic substitution with free fatty acid carboxylates from primary metabolism, generating bartoloside esters. Here, we applied a workflow based on PCR screening coupled to LC-HRESIMS and molecular network analysis with the aim of discovering additional bartoloside diversity. We report the annotation of 27 bartoloside and bartoloside ester derivatives, including the characterization of two new bartolosides, underlining the breadth of structures generated by bartoloside biosynthetic pathways. Some of the herein reported bartolosides feature hydroxylation in their side chains, a modification that has not been associated with this metabolite family.</p>","PeriodicalId":47,"journal":{"name":"Journal of Natural Products ","volume":" ","pages":"2709-2715"},"PeriodicalIF":3.3,"publicationDate":"2024-12-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11686503/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142680035","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Katarzyna Pokajewicz, Tomasz Biernat, Piotr P Wieczorek
{"title":"Is Linalyl Anthranilate Indeed Found In Plant Samples? GC-MS Misidentifications in the Scientific Literature.","authors":"Katarzyna Pokajewicz, Tomasz Biernat, Piotr P Wieczorek","doi":"10.1021/acs.jnatprod.4c01118","DOIUrl":"10.1021/acs.jnatprod.4c01118","url":null,"abstract":"<p><p>Linalyl anthranilate (LNA) has been identified in a number of plant extracts and essential oils by various authors using gas chromatography-mass spectrometry (GC-MS). However, the reported retention behavior of LNA in these studies is inconsistent with the retention data provided in the NIST database. Therefore, the objective of this study was to determine whether the reports of LNA were the result of misidentifications in GC-MS analyses or if the linear NIST retention index was inaccurate. To accomplish this, linalyl anthranilate was synthesized in a two-step procedure, and the resulting product was authenticated using nuclear magnetic resonance (NMR) and GC-MS analyses. This is a new synthetic route to linalyl anthranilate. Subsequently, retention indices for linalyl anthranilate were determined on three commonly used GC phases: polydimethylsiloxane, 5% diphenyl-95% polydimethylsiloxane, and polyethylene glycol. The study confirmed the accuracy of the NIST retention data, establishing the linear retention index data for LNA on a semi-nonpolar GC column as 2051. However, LNA reported in the literature by various authors exhibited a retention index in the elution window of approximately 1000-1400, strongly suggesting that these reports were the result of GC-MS misidentifications. A review of all reported occurrences of LNA in natural samples found no credible evidence of its presence. In many cases, it appears to be a misidentification of linalyl acetate caused by the occurrence of an erroneous spectrum in the older versions of the NIST mass spectra database.</p>","PeriodicalId":47,"journal":{"name":"Journal of Natural Products ","volume":" ","pages":"2839-2846"},"PeriodicalIF":3.3,"publicationDate":"2024-12-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142833104","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Nirmal K Chaudhary, Daniel Vuong, Ernest Lacey, Andrew M Piggott, Peter Karuso
{"title":"Phenalenones and Polyesters from <i>Talaromyces stipitatus</i> and Structure Revision of Talaromycesone A.","authors":"Nirmal K Chaudhary, Daniel Vuong, Ernest Lacey, Andrew M Piggott, Peter Karuso","doi":"10.1021/acs.jnatprod.4c00885","DOIUrl":"10.1021/acs.jnatprod.4c00885","url":null,"abstract":"<p><p>Investigation of the secondary metabolites of the filamentous fungus <i>Talaromyces stipitatus</i> led to the isolation of two new phenalenone dimers, talarohemiketal A (<b>1</b>) and talaroazasone A (<b>2</b>), and one new macrolide polyester, talaromacrolactone A (<b>3</b>), along with the reported oxyphenalenone dimers talaromycesone A (<b>4</b>), bacillisporin A (<b>5</b>), bacillisporin B (<b>6</b>), bacillisporin C (<b>7</b>), <i>epi</i>-bacillisporin F (<b>8</b>), and bacillisporin J (<b>9</b>), the phenalenone monomer funalenone (<b>10</b>), the polyesters 15G256α (<b>11</b>) and 15G256ν (<b>12</b>), and 6-hydroxymellein (<b>13</b>). Detailed analysis of 2D NMR correlations, supported by TDDFT calculations, led to the structural revision of talaromycesone A as <b>4</b> from previously reported structure <b>14</b>. In addition, the previously misassigned NMR spectra of compound <b>8</b> have been corrected.</p>","PeriodicalId":47,"journal":{"name":"Journal of Natural Products ","volume":" ","pages":"2738-2745"},"PeriodicalIF":3.3,"publicationDate":"2024-12-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142833106","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Hao Li, Yuling Chen, Bingqing Tang, Zhengjie Liu, Bo Peng, Jiajun Li, Han Gao, Sibao Wang, Zhiyong Li
{"title":"Cyclopeptide Avellanins D-O with Antimalarial Activity from the Mariana Trench Anemone-Derived <i>Hamigera ingelheimensis</i> MSC5.","authors":"Hao Li, Yuling Chen, Bingqing Tang, Zhengjie Liu, Bo Peng, Jiajun Li, Han Gao, Sibao Wang, Zhiyong Li","doi":"10.1021/acs.jnatprod.4c00740","DOIUrl":"10.1021/acs.jnatprod.4c00740","url":null,"abstract":"<p><p>Marine microorganisms are a treasure trove of natural products, especially those in extreme marine environments, which may produce novel natural products. Herein, biosynthetic gene cluster analysis combined with an integrated metabolomic strategy incorporating matrix-assisted laser desorption ionization-time-of-flight mass spectrometry (MALDI-TOF MS), nuclear magnetic resonance (NMR), and liquid chromatography-mass spectrometry/mass spectrometry (LC-MS/MS) based Global Natural Products Social Molecular Networking (GNPS) was used to discover new compounds from the Mariana trench anemone-derived fungus <i>Hamigera ingelheimensis</i> MSC5. As a result, 12 new cyclic pentapeptides, avellanins D-O (<b>1</b>-<b>12</b>), were isolated, together with a known cyclic pentapeptide avellanin C (<b>13</b>). All the structures and absolute configurations were elucidated using NMR, mass spectrometry, X-ray diffraction analysis, and Marfey's method. A plausible biosynthetic pathway for the avellanins was proposed based on the gene cluster analysis of <i>H. ingelheimensis</i> MSC5. Bioassay revealed that compound <b>6</b> exhibited potent antimalarial activity with an IC<sub>50</sub> value of 0.19 ± 0.09 μM.</p>","PeriodicalId":47,"journal":{"name":"Journal of Natural Products ","volume":" ","pages":"2695-2708"},"PeriodicalIF":3.3,"publicationDate":"2024-12-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142724536","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Abietane Diterpenoids from the Rhizomes of <i>Kaempferia roscoeana</i> and Their Anti-Inflammatory Activities.","authors":"Ratchanaporn Chokchaisiri, Apinya Kaisoda, Sarot Cheenpracha, Lucksagoon Ganranoo, Sareeya Bureekaew, Chutamas Thepmalee, Apichart Suksamrarn","doi":"10.1021/acs.jnatprod.4c01127","DOIUrl":"10.1021/acs.jnatprod.4c01127","url":null,"abstract":"<p><p>Six new abietane diterpenes, roscoeananes A-F (<b>1</b>-<b>6</b>), along with two known compounds (<b>7</b>-<b>8</b>) were isolated from the rhizomes of <i>Kaempferia roscoeana</i>. The structures of all compounds were elucidated by analysis of spectroscopic data, and the absolute configurations were assigned by a comparison of the theoretical and experimental electronic circular dichroism (ECD) spectra and a comparison with literature values. The unreported compound <b>5</b> is an ether-linked dimer of roscoeanane B (<b>2</b>). Most of the isolated compounds were tested for their nitric oxide inhibitory effects in lipopolysaccharide-activated RAW264.7 cells. Among them, roscoeanane A (<b>1</b>) was found to reduce NO levels in murine macrophage cells with an IC<sub>50</sub> value of 3.58 ± 0.95 μM and exhibited low cytotoxicity (IC<sub>50</sub> > 50 μM).</p>","PeriodicalId":47,"journal":{"name":"Journal of Natural Products ","volume":" ","pages":"2847-2854"},"PeriodicalIF":3.3,"publicationDate":"2024-12-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142737784","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Joon Soo An, Jung Min Kim, Jaeho Han, Jun Young Lee, Sang-Jip Nam, Sang Kook Lee, Yeo Joon Yoon, Dong-Chan Oh
{"title":"Discovery of Cyclic Lipopeptides, Octaminomycins C and D, by Engineering LysR Transcriptional Regulator of <i>Streptomyces</i> sp.","authors":"Joon Soo An, Jung Min Kim, Jaeho Han, Jun Young Lee, Sang-Jip Nam, Sang Kook Lee, Yeo Joon Yoon, Dong-Chan Oh","doi":"10.1021/acs.jnatprod.4c01047","DOIUrl":"10.1021/acs.jnatprod.4c01047","url":null,"abstract":"<p><p>New lipodepsipeptides, octaminomycins C and D (<b>1</b> and <b>2</b>), were discovered in an engineered <i>Streptomyces</i> sp. strain overexpressing the LysR transcriptional regulator family. The structures of <b>1</b> and <b>2</b> were elucidated by comprehensive analysis of their UV, HRMS, and NMR data. The absolute configurations were determined using spectroscopic analysis, the advanced Marfey's method, and genomic analysis. Genomic analysis enabled the identification of the nonribosomal peptide synthetase (NRPS) biosynthetic pathway of the octaminomycins.</p>","PeriodicalId":47,"journal":{"name":"Journal of Natural Products ","volume":" ","pages":"2822-2828"},"PeriodicalIF":3.3,"publicationDate":"2024-12-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142816771","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}