Cuiying Ma*, Maria Monagas, Leah Bronstein, Amy Cadwallader and Virginia Goldman*,
{"title":"Dietary Supplement Adulteration: Laboratory Approaches to Risk Mitigation","authors":"Cuiying Ma*, Maria Monagas, Leah Bronstein, Amy Cadwallader and Virginia Goldman*, ","doi":"10.1021/acs.jnatprod.5c00456","DOIUrl":"10.1021/acs.jnatprod.5c00456","url":null,"abstract":"<p >Adulteration issues are a continuous problem facing dietary supplements (DS) manufacturers. In the past few years, major supply chain disruptions have further led to increased risk of adulteration. DS manufacturers selling products in the U.S. are required to comply with GMP, which include quality control testing to ensure that the products meet specifications for identity, purity, strength and composition, and limits on contaminants. In addition to quality control testing with compendial methods, tools to help the DS industry mitigate risks associated with adulteration include DS certification or verification programs, quality agreements with suppliers, and third-party testing.</p>","PeriodicalId":47,"journal":{"name":"Journal of Natural Products ","volume":"88 8","pages":"2029–2040"},"PeriodicalIF":3.6,"publicationDate":"2025-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144697095","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":"Design, Synthesis, and Anti-Hepatocellular Carcinoma Evaluation Revealed by Transcriptome Analysis of Epimeric Sesquiterpene Lactones: Trilobolide-6-<i>O</i>-isobutyrate Analogues.","authors":"Xiu-Qiao Zhou, Yi-Ming Qian, Xing Li, Chui-Ji Jiang, Hua-Jie Feng, Hui-Qian He, Hao-Zhe Zeng, Yang Hui, Wen-Hao Chen","doi":"10.1021/acs.jnatprod.5c00279","DOIUrl":"https://doi.org/10.1021/acs.jnatprod.5c00279","url":null,"abstract":"<p><p>Hepatocellular carcinoma is a malignant neoplasm that ranks sixth in global incidence and fourth in global mortality. In this study, based on the splicing principle and prodrug synthesis strategies, a total of 18 new sesquiterpene lactone derivatives, consisting of seven mustard derivatives and 11 amine adducts, were designed and synthesized using the sesquiterpene lactone epimers <b>1</b> and <b>2</b> as parent molecules. Their structures were characterized by means of NMR, HRESIMS, and X-ray crystallography data. Through the CCK8 assay, compound <b>11</b> exhibited the most potent inhibitory activity against HepG2 (IC<sub>50</sub> = 4.2 μM) and Huh7 (IC<sub>50</sub> = 4.9 μM) cells. Subsequent pharmacological experiments demonstrated that compound <b>18</b> could decrease the viability of two HCC cell lines in a time- and dose-dependent manner. Both compounds <b>11</b> and <b>18</b> were capable of inducing cell apoptosis, arresting the cell cycle progression, and inhibiting cell proliferation and migration in HepG2 and Huh7 cells. Further transcriptome analysis indicated that <b>18</b> possessed potential antitumor effects. Both <b>11</b> and <b>18</b> had favorable predicted ADME and physicochemical properties. Collectively, the findings of this study suggest that derivatives <b>11</b> and <b>18</b> are promising candidates for the treatment of hepatocellular carcinoma.</p>","PeriodicalId":47,"journal":{"name":"Journal of Natural Products ","volume":" ","pages":""},"PeriodicalIF":3.3,"publicationDate":"2025-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144657876","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}
Birk Jäger, Jan Luca Budde, Norman Birke, Maximilian Hauke and Andreas Kirschning*,
{"title":"Chemoenzymatic Generation of Thio-analogues of δ-Cadinene, δ-Cadinol, and a Thio-diquinane Using 8-Thio-farnesylpyrophosphate","authors":"Birk Jäger, Jan Luca Budde, Norman Birke, Maximilian Hauke and Andreas Kirschning*, ","doi":"10.1021/acs.jnatprod.5c00409","DOIUrl":"10.1021/acs.jnatprod.5c00409","url":null,"abstract":"<p >The synthesis of 8-thio-farnesylpyrophosphate is reported, which was subjected to biotransformations with different sesquiterpene synthases. The 9-thio-analogues of δ-cadinene and δ-cadinol were formed by the sesquiterpene synthases Cop4 and Omp7. In contrast, the fungal sesquiterpene synthase BcBOT2 yielded a diquinane terpenoid that contains a keto and thiol group. The formation of the two former “sulfo”-terpenoids can be rationalized by following the route proposed for δ-cadinene and δ-cadinol. The latter can be regarded by the result of a late-stage hydrolysis product during the analogous pathway to presilphiperfolan-8β-ol, the natural product of BcBOT2. The olfactoric analysis of the three “sulfo”-sesuiterpenoids revealed a stale odor for the cadinene derivatives, whereas the ketothiol diquinane exhibits a spicy aroma with a subtle chili note.</p>","PeriodicalId":47,"journal":{"name":"Journal of Natural Products ","volume":"88 7","pages":"1653–1662"},"PeriodicalIF":3.6,"publicationDate":"2025-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12305643/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144647993","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}
Nathan Blyth, Yi Chen, Florent Rouvier, Jean Michel Brunel, Melissa M. Cadelis and Brent R. Copp*,
{"title":"Bioinspired Syntheses of the Marine Pyridoacridine Alkaloids 2-Bromo and 3-Bromodeoxyamphimedine and Structure Correction of 2-Bromoamphimedine","authors":"Nathan Blyth, Yi Chen, Florent Rouvier, Jean Michel Brunel, Melissa M. Cadelis and Brent R. Copp*, ","doi":"10.1021/acs.jnatprod.5c00538","DOIUrl":"10.1021/acs.jnatprod.5c00538","url":null,"abstract":"<p >We have used an efficient bioinspired methodology to synthesize, for the first time, the recently reported antibacterial brominated pyridoacridine alkaloids 2-bromodeoxyamphimedine and 3-bromodeoxyamphimedine. The synthetic route started with the synthesis of 5-bromo and 6-bromokynuramine, the latter being a sponge-derived marine natural product. Oxidative addition of the brominated kynuramine analogues, with Boc-dopamine, afforded the anticipated natural products 2- and 3-bromostyelsamine D. Further Pictet-Spengler reaction with paraformaldehyde afforded the target brominated deoxyamphimedines, spectroscopic data for which were in excellent agreement with those reported for the isolated natural products. Oxidation of 2-bromodeoxyamphimedine and 3-bromodeoxyamphimedine using K<sub>3</sub>[Fe(CN)<sub>6</sub>] gave 2- and 3-bromoamphimedine, respectively. <sup>1</sup>H NMR data reported for ‘2-bromoamphimedine’, isolated from a <i>Petrosia</i> n. sp. sponge differed from the data observed for synthetic 2-bromoaphimedine but were in good agreement with those observed for synthetic 3-bromoamphimedine, requiring structure correction of the isolated natural product.</p>","PeriodicalId":47,"journal":{"name":"Journal of Natural Products ","volume":"88 8","pages":"1901–1906"},"PeriodicalIF":3.6,"publicationDate":"2025-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144657875","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}
Pathompong Paomephan, Khadija Hassan, Marco Kirchenwitz, Sebastian Pfütze, Frank Surup, Ivana Císařová, Chuenchit Boonchird* and Marc Stadler*,
{"title":"The Khamkhains, Neurotrophic Drimane-Type Sesquiterpenoids Derived from a Polyporaceous Basidiomycete Originating from Thailand","authors":"Pathompong Paomephan, Khadija Hassan, Marco Kirchenwitz, Sebastian Pfütze, Frank Surup, Ivana Císařová, Chuenchit Boonchird* and Marc Stadler*, ","doi":"10.1021/acs.jnatprod.5c00669","DOIUrl":"10.1021/acs.jnatprod.5c00669","url":null,"abstract":"<p >Eight unprecedented terpenoids were isolated from submerged cultures of a polyporoid basidiomycete originating from Thailand (which had been referred to as “<i>Cerrena</i> sp.” in a previous publication) by preparative chromatography. Their chemical structures were elucidated by extensive two-dimensional nuclear magnetic resonance (NMR) spectroscopy and high-resolution mass spectrometry. One of the compounds was crystallized, and its absolute configuration was established by X-ray crystallography. Among the isolated metabolites were several members of the rare nitrogen-containing drimane type and one dimeric drimane, which consists of a nitrogen-containing monomer and a regular monomer. The latter compound represents a hitherto unknown type of terpenoid natural product. The metabolites were subjected to a biological characterization, and some of them showed significant neurotrophic effects. Notably, several of the compounds significantly enhanced the outgrowth of neurites in PC12 cells when treated with 5 ng/mL nerve growth factor. On the other hand, they were devoid of significant cytotoxic and antimicrobial effects.</p>","PeriodicalId":47,"journal":{"name":"Journal of Natural Products ","volume":"88 7","pages":"1840–1846"},"PeriodicalIF":3.6,"publicationDate":"2025-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12305638/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144647995","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}
Ángel D. Hernández-Mejías, Gabriel D. Jimenez-Nieves and Eduardo J. E. Caro-Diaz*,
{"title":"In Silico Design and Analysis of Cyanobacterial Pseudo Natural Products","authors":"Ángel D. Hernández-Mejías, Gabriel D. Jimenez-Nieves and Eduardo J. E. Caro-Diaz*, ","doi":"10.1021/acs.jnatprod.5c00439","DOIUrl":"10.1021/acs.jnatprod.5c00439","url":null,"abstract":"<p >Marine cyanobacteria produce natural products (NPs) with potent and selective bioactivity against a broad range of diseases. However, like many NPs, most exhibit poor drug-like physicochemical properties, and the discovery of structurally novel NPs is declining. To address these challenges, we generated an in silico library of 2,415 cyanobacterial pseudo-NPs by tethering cyanobacterial NP fragments with privileged scaffolds from noncyanobacterial NPs via hypothetical amide bond formation. This library was analyzed using computational platforms to assess predicted physicochemical and ADME/Tox properties, lead-likeness penalties, NP-likeness scores, Tanimoto similarity coefficients, and Synthetic Accessibility Scores. Comparisons to public compound libraries showed that most cyanobacterial pseudo-NPs possess favorable drug- and lead-like characteristics; occupy low-density chemical space; and display unique, synthetically accessible scaffolds. Our results suggest that these pseudo-NPs are promising synthetic targets for drug development. Moreover, this platform can be expanded by using artificial intelligence (AI)-based fragment harvesting tools to create larger libraries of NP-inspired compounds. By integrating cyanobacterial fragments with known bioactive motifs, we aim to bridge the gap between natural diversity and drug-like properties, providing a novel and tractable chemical space for drug discovery efforts.</p>","PeriodicalId":47,"journal":{"name":"Journal of Natural Products ","volume":"88 7","pages":"1701–1709"},"PeriodicalIF":3.6,"publicationDate":"2025-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144647994","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}
Zhiwei Bian, Xiaoying Liu, Jiaxuan Li, Shian Hu, Yeun-Mun Choo, Zeyu Zhao, Jinfeng Hu, Kangrui Ji, Mark T. Hamann, Xin Wang* and Xiaojuan Wang*,
{"title":"Bletistrosides M-X, Anti-Alzheimer’s Disease Compounds from the Tubers of Bletilla striata","authors":"Zhiwei Bian, Xiaoying Liu, Jiaxuan Li, Shian Hu, Yeun-Mun Choo, Zeyu Zhao, Jinfeng Hu, Kangrui Ji, Mark T. Hamann, Xin Wang* and Xiaojuan Wang*, ","doi":"10.1021/acs.jnatprod.5c00486","DOIUrl":"10.1021/acs.jnatprod.5c00486","url":null,"abstract":"<p >Twelve new compounds, bletistrosides M-X (<b>1</b>-<b>12</b>), including five glucosyloxybenzyl 2-isobutylmalates (<b>1</b>-<b>5</b>), along with four neolignan glycosides (<b>6</b>-<b>9</b>), two phenanthrene derivatives (<b>10</b>-<b>11</b>), and one bibenzyl derivative (<b>12</b>), were isolated from the tubers of <i>Bletilla striata</i> (<i>B. striata</i>). The structures and absolute configurations of the undescribed compounds were elucidated on the basis of spectroscopic data analysis, experimental and calculated electronic circular dichroism data, chiroptical analysis, and chemical derivatizations. In silico, compounds <b>2</b>, <b>3</b>, and <b>12</b> bound well to Aβ<sub>1–42</sub>. Compounds <b>2</b>, <b>3</b>, and <b>12</b> significantly delayed the paralysis phenotype in CL4176 worms compared to controls. Higher nonparalysis rates were observed in these treatment groups (5 μM for compound <b>2</b>; 25, 50 μM for compounds <b>2</b>, <b>3</b> and <b>12</b>), suggesting their potential role in anti-Alzheimer’s disease.</p>","PeriodicalId":47,"journal":{"name":"Journal of Natural Products ","volume":"88 7","pages":"1752–1765"},"PeriodicalIF":3.6,"publicationDate":"2025-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144641244","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":"Correction to Pestones A and B from a Fungus Pestalotiopsis sp. Bound to Mutant p53 and Changed its Conformation","authors":"Yusaku Sadahiro, Misaki Okubo, Yuki Hitora, Natsuko Hitora-Imamura, Shunsuke Kotani and Sachiko Tsukamoto, ","doi":"10.1021/acs.jnatprod.5c00761","DOIUrl":"10.1021/acs.jnatprod.5c00761","url":null,"abstract":"","PeriodicalId":47,"journal":{"name":"Journal of Natural Products ","volume":"88 7","pages":"1868"},"PeriodicalIF":3.6,"publicationDate":"2025-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144635731","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}
Dong Huang, Yi-Ling Liao, Jia-Qian Chen, Fang-Yu Yuan, Shu-Qi Wu, Jia-Luo Huang, Tao Yuan, Xin Chen, Zhang-Hua Sun, Gui-Hua Tang, Lu Gan* and Sheng Yin*,
{"title":"Wikstdaphnoids A–I, Daphnane Diterpenoid Orthoesters from Wikstroemia chamaedaphne with Anti-Liver Fibrosis Activity","authors":"Dong Huang, Yi-Ling Liao, Jia-Qian Chen, Fang-Yu Yuan, Shu-Qi Wu, Jia-Luo Huang, Tao Yuan, Xin Chen, Zhang-Hua Sun, Gui-Hua Tang, Lu Gan* and Sheng Yin*, ","doi":"10.1021/acs.jnatprod.5c00536","DOIUrl":"10.1021/acs.jnatprod.5c00536","url":null,"abstract":"<p >Bioassay─combined with molecular networking─guided chemical investigation of <i>Wikstroemia chamaedaphne</i> (Thymelaeaceae) led to the isolation of 15 daphnane diterpenoid orthoesters (DDOs), of which <b>1</b>–<b>9</b> were new. Compounds <b>1</b>–<b>5</b> and <b>8</b>–<b>9</b> are a rare group of 1-alkyl macrocyclic DDOs. These structures were determined by extensive spectroscopic and computational methods as well as single-crystal X-ray diffraction. All of DDOs were evaluated for anti-liver fibrosis activity in TGF-<i>β</i>1-stimulated LX-2 cells by high-throughput screening assays, and the results showed that six of isolates significantly inhibited the expression of fibronectin (FN) at 10 <i>μ</i>M, among which <b>1</b> and <b>11</b> exhibited the most potent activity that could dose-dependently inhibit protein levels of FN, <i>α</i>-smooth muscle actin (<i>α</i>-SMA), and collagen I in LX-2 and JS-1 cells. Our study indicated that macrocyclic DDOs could serve as a new type of structural motif in anti-liver fibrosis drug development.</p>","PeriodicalId":47,"journal":{"name":"Journal of Natural Products ","volume":"88 7","pages":"1781–1790"},"PeriodicalIF":3.6,"publicationDate":"2025-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144641245","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}