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Five undescribed 1,3-diphenylpropanes from the leaves of Broussonetia papyrifera 从纸草叶中分离得到5个未描述的1,3-二苯丙烷
IF 1.4 4区 生物学
Phytochemistry Letters Pub Date : 2025-10-03 DOI: 10.1016/j.phytol.2025.104045
Tingting Guo , Qingfang Wang , Chen Peng , Xingli Zhang , Kepu Huang , Kou Wang , Hongping He , Mingming Li
{"title":"Five undescribed 1,3-diphenylpropanes from the leaves of Broussonetia papyrifera","authors":"Tingting Guo ,&nbsp;Qingfang Wang ,&nbsp;Chen Peng ,&nbsp;Xingli Zhang ,&nbsp;Kepu Huang ,&nbsp;Kou Wang ,&nbsp;Hongping He ,&nbsp;Mingming Li","doi":"10.1016/j.phytol.2025.104045","DOIUrl":"10.1016/j.phytol.2025.104045","url":null,"abstract":"<div><div>Five undescribed 1,3-diphenylpropanes (1–5) and ten known analogues (6–15) were isolated from the leaves of <em>Broussonetia papyrifera.</em> Their structures were established through comprehensive analysis of spectroscopic data, including HRESIMS, 1D and 2D NMR. Among them, the known compounds 7–8, 11–13, and 15 were discovered in plants of this genus for the first time.</div></div>","PeriodicalId":20408,"journal":{"name":"Phytochemistry Letters","volume":"70 ","pages":"Article 104045"},"PeriodicalIF":1.4,"publicationDate":"2025-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145222723","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Labdane diterpenoids from the ripe fruits of Forsythia suspensa and their anti-inflammatory activities in vitro 连翘果实中二萜类化合物的体外抗炎活性研究
IF 1.4 4区 生物学
Phytochemistry Letters Pub Date : 2025-09-25 DOI: 10.1016/j.phytol.2025.103042
Yue Wang , Jia-Huan Liu , Xi-Dian Yue , De-Wu Zhang , Sheng-Jun Dai
{"title":"Labdane diterpenoids from the ripe fruits of Forsythia suspensa and their anti-inflammatory activities in vitro","authors":"Yue Wang ,&nbsp;Jia-Huan Liu ,&nbsp;Xi-Dian Yue ,&nbsp;De-Wu Zhang ,&nbsp;Sheng-Jun Dai","doi":"10.1016/j.phytol.2025.103042","DOIUrl":"10.1016/j.phytol.2025.103042","url":null,"abstract":"<div><div>One previously unreported labdane diterpenoid with a rare 15,12-olide moiety, named forsypenanhuin A (1), along with four known ones (2-5), were isolated from the fruits of <em>Forsythia suspensa</em>. The structure and relative configuration of the undescribed compound were elucidated via extensive spectroscopic methods, and its absolute configuration was fully confirmed by single crystal X-ray diffraction analysis using Cu Kα radiation. <em>In vitro</em>, five labdane diterpenoids exhibited significant anti-inflammatory activities due to inhibiting the release of TNF-<em>α</em>, IL-6, and IL-1<em>β</em> in the LPS-induced RAW264.7 cells.</div></div>","PeriodicalId":20408,"journal":{"name":"Phytochemistry Letters","volume":"70 ","pages":"Article 103042"},"PeriodicalIF":1.4,"publicationDate":"2025-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145160218","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Curculatifolia, a new norlignan derivative from Curculigo latifolia using MS/MS-based molecular networking discovery 利用MS/MS-based分子网络技术发现从莪术中提取的一种新的降脂素衍生物
IF 1.4 4区 生物学
Phytochemistry Letters Pub Date : 2025-09-20 DOI: 10.1016/j.phytol.2025.103051
Nadiah Mad Nasir , Nur Kartinee Kassim , Hanan Hasan , Pavithren Devakrishnan , Intan Safinar Ismail
{"title":"Curculatifolia, a new norlignan derivative from Curculigo latifolia using MS/MS-based molecular networking discovery","authors":"Nadiah Mad Nasir ,&nbsp;Nur Kartinee Kassim ,&nbsp;Hanan Hasan ,&nbsp;Pavithren Devakrishnan ,&nbsp;Intan Safinar Ismail","doi":"10.1016/j.phytol.2025.103051","DOIUrl":"10.1016/j.phytol.2025.103051","url":null,"abstract":"<div><div>The <em>Curculigo</em> genus is a source of secondary metabolites with various bioactivities, including antidiabetic, antibacterial, anti-inflammatory, and antioxidant properties. In this study, we investigated <em>Curculigo latifolia</em> from Western Malaysia using LC-MS/MS and molecular networking (MN) analysis. The analysis revealed two major clusters, norlignans and phenolic glycosides, in fractions F14–17 and L2. Furthermore, this paper presents the first comparative study of sinensigenin A, the most abundant compound in the rhizome fraction exhibiting antioxidant activity, and sinensigenin B, the most abundant compound in the leaf fraction, which demonstrates activity against <em>Staphylococcus aureus</em> and <em>Bacillus subtilis</em>. We isolated one new compound, curculatifolia (<strong>27</strong>), using an MN-guided approach and characterized it through spectroscopic techniques (NMR, FTIR, and MS).</div></div>","PeriodicalId":20408,"journal":{"name":"Phytochemistry Letters","volume":"70 ","pages":"Article 103051"},"PeriodicalIF":1.4,"publicationDate":"2025-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145099180","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Inhibition of protein tyrosine phosphatase 1B by phenolics and neolignans from Myristica fragrans seeds: Enzyme kinetics and molecular docking 香豆蔻种子酚类物质和新木质素对蛋白酪氨酸磷酸酶1B的抑制作用：酶动力学和分子对接
IF 1.4 4区 生物学
Phytochemistry Letters Pub Date : 2025-09-20 DOI: 10.1016/j.phytol.2025.103050
Thi Oanh Vu , Thi Ly Pham , Jieun Shin , Manh Tuan Ha , Jun-Kyu Byun , Byung Sun Min , Jeong Ah Kim
{"title":"Inhibition of protein tyrosine phosphatase 1B by phenolics and neolignans from Myristica fragrans seeds: Enzyme kinetics and molecular docking","authors":"Thi Oanh Vu ,&nbsp;Thi Ly Pham ,&nbsp;Jieun Shin ,&nbsp;Manh Tuan Ha ,&nbsp;Jun-Kyu Byun ,&nbsp;Byung Sun Min ,&nbsp;Jeong Ah Kim","doi":"10.1016/j.phytol.2025.103050","DOIUrl":"10.1016/j.phytol.2025.103050","url":null,"abstract":"<div><div><em>Myristica fragrans</em> Houtt. seeds, a recognized herbal remedy with diverse phytoconstituents and biological activities, have been traditionally used to manage various health conditions. While numerous studies have demonstrated the anti-diabetic properties of this plant, research focusing on the mechanism of protein tyrosine phosphatase 1B (PTP1B) inhibition remains limited. This study aimed to isolate and evaluate the PTP1B inhibitory activity of phenolics and neolignans from <em>M. fragrans</em> seeds. We successfully isolated a new benzofuranoid neolignan, 5-methoxy-eupomatenoid-7 (16), along with 15 known compounds (1–15). The chemical structure of the isolated secondary metabolites was elucidated using spectroscopic analyses, including nuclear magnetic resonance (NMR) and high-resolution mass spectrometry (HR-MS), and confirmed by comparison with previously reported data. The inhibitory potential of all isolated compounds against PTP1B was assessed, with isodihydrocarinatidin (11) identified as the most potent inhibitor, exhibiting an IC<sub>50</sub> value of 9.6 ± 0.65 μM. Notably, enzyme kinetic studies revealed that compound 11 inhibits PTP1B through an uncompetitive mechanism, a relatively uncommon mode of inhibition. Molecular docking analysis revealed the binding interactions between compound 11 and PTP1B, while treatment with compound <strong>11</strong> significantly enhanced glucose uptake. This study provides the first evidence that isodihydrocarinatidin acts as a novel PTP1B inhibitor, establishing a foundation for further investigations toward the development of antidiabetic therapies.</div></div>","PeriodicalId":20408,"journal":{"name":"Phytochemistry Letters","volume":"70 ","pages":"Article 103050"},"PeriodicalIF":1.4,"publicationDate":"2025-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145099159","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Announcements of the Phytochemical Society of Europe 欧洲植物化学学会公告
IF 1.4 4区 生物学
Phytochemistry Letters Pub Date : 2025-09-18 DOI: 10.1016/S1874-3900(25)01137-1
{"title":"Announcements of the Phytochemical Society of Europe","authors":"","doi":"10.1016/S1874-3900(25)01137-1","DOIUrl":"10.1016/S1874-3900(25)01137-1","url":null,"abstract":"","PeriodicalId":20408,"journal":{"name":"Phytochemistry Letters","volume":"69 ","pages":"Article 103047"},"PeriodicalIF":1.4,"publicationDate":"2025-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145099843","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Two new compounds from the roots of Mirabilis jalapa L. and their cytotoxic activity in vitro 紫茉莉根中两种新化合物及其体外细胞毒活性研究
IF 1.4 4区 生物学
Phytochemistry Letters Pub Date : 2025-09-15 DOI: 10.1016/j.phytol.2025.103043
Xiao-Mei Yan , Tian-Tian Qu , Jie Luan , Hou-Run Zhang , Xiang-Qin Tang , Xiao-Xu Bi , Ying Wang , Bing Chen , Jiang-Bo He
{"title":"Two new compounds from the roots of Mirabilis jalapa L. and their cytotoxic activity in vitro","authors":"Xiao-Mei Yan ,&nbsp;Tian-Tian Qu ,&nbsp;Jie Luan ,&nbsp;Hou-Run Zhang ,&nbsp;Xiang-Qin Tang ,&nbsp;Xiao-Xu Bi ,&nbsp;Ying Wang ,&nbsp;Bing Chen ,&nbsp;Jiang-Bo He","doi":"10.1016/j.phytol.2025.103043","DOIUrl":"10.1016/j.phytol.2025.103043","url":null,"abstract":"<div><div>This study investigated the chemical composition of the roots of <em>Mirabilis jalapa</em> L. and evaluated the cytotoxic activity of its constituents. The ethyl acetate extract of <em>M. jalapa</em> roots was isolated and purified, and the structures of twelve isolated compounds were identified through modern spectroscopic methods and physicochemical analysis. These compounds were categorized into two groups: compounds <strong>1</strong>–<strong>7</strong> (rotenoid derivatives) and compounds <strong>8</strong>–<strong>12</strong> (feruloyl tyramine glycosides), Among which compounds <strong>1</strong> and <strong>8</strong> are new compounds. The cytotoxicity of these compounds was assessed using the CCK-8 assay against five tumor cell lines, namely HepG2, PANC-1, HeLa, SY5Y, and AGS. Results showed compounds <strong>4</strong>, <strong>5</strong>, and <strong>7</strong> exhibited strong anti-tumor cytotoxic activity. Furthermore, network pharmacology analysis identified EGFR and STAT3 as key antitumor targets, and this finding was validated by molecular docking experiments. Overall, this research highlights the chemical diversity of <em>M. jalapa</em> roots and provides insights into the potential development of antitumor agents from this plant.</div></div>","PeriodicalId":20408,"journal":{"name":"Phytochemistry Letters","volume":"70 ","pages":"Article 103043"},"PeriodicalIF":1.4,"publicationDate":"2025-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145099158","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Two pairs of novel isochromanone derivatives with antiadipogenic effects from the cultures of Ganoderma gibbosum 从长毛灵芝培养物中获得两对具有抗脂肪作用的新型异色罗曼酮衍生物
IF 1.4 4区 生物学
Phytochemistry Letters Pub Date : 2025-09-06 DOI: 10.1016/j.phytol.2025.103041
Yu-Jie Li , Xiao-Cui Liu , Yi Luo , Ming-Hua Qiu , Ping Zhao , Xing-Rong Peng
{"title":"Two pairs of novel isochromanone derivatives with antiadipogenic effects from the cultures of Ganoderma gibbosum","authors":"Yu-Jie Li ,&nbsp;Xiao-Cui Liu ,&nbsp;Yi Luo ,&nbsp;Ming-Hua Qiu ,&nbsp;Ping Zhao ,&nbsp;Xing-Rong Peng","doi":"10.1016/j.phytol.2025.103041","DOIUrl":"10.1016/j.phytol.2025.103041","url":null,"abstract":"<div><div>Two pairs of undescribed isochromanone derivatives, (<img>)-ganogibbin A (<strong>1a</strong>), (+)-ganogibbin A (<strong>1b</strong>), (+)-ganogibbin B (<strong>2a</strong>), and (<img>)-ganogibbin B (<strong>2b</strong>) were firstly isolated from the cultures of the mushroom <em>Ganoderma gibbosum</em>. Their structures including stereostructures were achieved by the extensive 1D and 2D NMR spectra, HRESIMS, and calculated NMR and ECD methods. Furthermore, antiadipogenic activities of compounds <strong>1</strong> and <strong>2</strong> were evaluated and the results showed that compounds <strong>1</strong> and <strong>2</strong> can significantly reduce the accumulation of lipid in the 3T3-L1 model at the concentration of 20 μM. Furthermore, compound <strong>2</strong> showed a concentration-dependent inhibition and had no toxicity at 100 μM.</div></div>","PeriodicalId":20408,"journal":{"name":"Phytochemistry Letters","volume":"69 ","pages":"Article 103041"},"PeriodicalIF":1.4,"publicationDate":"2025-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145003673","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Two unprecedented 2-(2-phenethyl)chromone derivatives with anti-Helicobacter pylori and anti-inflammatory activities from agarwood of Aquilaria crassna 两种前所未有的具有抗幽门螺杆菌和抗炎活性的沉香2-（2-苯基）色素衍生物
IF 1.4 4区 生物学
Phytochemistry Letters Pub Date : 2025-08-30 DOI: 10.1016/j.phytol.2025.103039
Xiao-Hong Li , Hao Wang , Wen-Li Mei , Wen-Hua Dong , Jun Zeng , Sheng-Zhuo Huang , Hui-Qin Chen , Yan-Mei Wei , Fei Wu , Zhi-Yong Guo , Hao-Fu Dai
{"title":"Two unprecedented 2-(2-phenethyl)chromone derivatives with anti-Helicobacter pylori and anti-inflammatory activities from agarwood of Aquilaria crassna","authors":"Xiao-Hong Li ,&nbsp;Hao Wang ,&nbsp;Wen-Li Mei ,&nbsp;Wen-Hua Dong ,&nbsp;Jun Zeng ,&nbsp;Sheng-Zhuo Huang ,&nbsp;Hui-Qin Chen ,&nbsp;Yan-Mei Wei ,&nbsp;Fei Wu ,&nbsp;Zhi-Yong Guo ,&nbsp;Hao-Fu Dai","doi":"10.1016/j.phytol.2025.103039","DOIUrl":"10.1016/j.phytol.2025.103039","url":null,"abstract":"<div><div>Two unprecedented 2-(2-phenethyl)chromone derivatives, 4′-demethoxy-aquisinenin I (<strong>1</strong>) and 6\"-methoxy-crassna B (<strong>2</strong>)，together with a known 2-(2-phenylethyl)chromone dimer (<strong>3</strong>), were isolated from the ethanol extract of agarwood of <em>Aquilaria crassna.</em> Their structures were constructed through comprehensive spectroscopic analysis, including 1D and 2D NMR, HRESIMS. All compounds were screened for their anti-<em>Helicobacter pylor</em>i activity and ability to inhibit nitric oxide production in lipopolysaccharide (LPS)-stimulated RAW264.7 cells. Compound <strong>1</strong> exhibited anti-<em>Helicobacter pylori</em> effect with a MIC value of 40 <em>µ</em>M, and anti-inflammatory activity with an IC<sub>50</sub> value of 14.10 ± 1.04 <em>μ</em>M.</div></div>","PeriodicalId":20408,"journal":{"name":"Phytochemistry Letters","volume":"69 ","pages":"Article 103039"},"PeriodicalIF":1.4,"publicationDate":"2025-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144916383","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Sesquiterpenoids from Lindera aggregata with Keap1 binding affinity: Chemical diversity and bioactivity screening 具有Keap1结合亲和性的山茱萸倍半萜类化合物：化学多样性和生物活性筛选
IF 1.4 4区 生物学
Phytochemistry Letters Pub Date : 2025-08-29 DOI: 10.1016/j.phytol.2025.103035
Caixia Guo , Wenhui Liu , Haojing Jiang , Hai-Jiang Zhang , Yuanqiang Guo , Jing Xu
{"title":"Sesquiterpenoids from Lindera aggregata with Keap1 binding affinity: Chemical diversity and bioactivity screening","authors":"Caixia Guo ,&nbsp;Wenhui Liu ,&nbsp;Haojing Jiang ,&nbsp;Hai-Jiang Zhang ,&nbsp;Yuanqiang Guo ,&nbsp;Jing Xu","doi":"10.1016/j.phytol.2025.103035","DOIUrl":"10.1016/j.phytol.2025.103035","url":null,"abstract":"<div><div>Phytochemical investigation of <em>Lindera aggregata</em> roots led to the isolation and identification of 20 sesquiterpenoids (<strong>1</strong>–<strong>20</strong>), including a new germacrane-type derivative (<strong>1</strong>) and five congeners (<strong>6</strong>, <strong>10</strong>–<strong>11</strong>, and <strong>14</strong>–<strong>15</strong>) reported for the first time in this genus. Structural elucidation, based on NMR, HRESIMS, and ECD analysis, classified these compounds into five distinct chemical subtypes: germacrane (<strong>1</strong>–<strong>6</strong>), eudesmane (<strong>7</strong>–<strong>16</strong>), guaiane (<strong>18</strong>–<strong>19</strong>), lindenane (<strong>17</strong>), and elemane (<strong>20</strong>). To assess their potential bioactivity, an affinity ultrafiltration screening (AUS) assay, coupled with ultra-performance liquid chromatography-mass spectrometry (UPLC-MS) analysis, was performed using Kelch-like ECH-associated protein 1 (Keap1) as the target protein. The results indicated that 14 compounds exhibited significant binding affinity to Keap1. Molecular docking studies further revealed that compounds <strong>2</strong>, <strong>4</strong>, and <strong>8</strong> displayed the strongest interactions, with binding energies of −9.6, −9.2, and −8.6 kcal/mol, respectively. These compounds primarily interact with Keap1 through hydrogen bonding with residues ASN-414, ARG-415, VAL-465, and ILE-559, and hydrophobic interactions with residues ALA-366, GLY-367, GLY-464, GLY-558, and Ile-559. These findings suggested that these sesquiterpenoids may exert antioxidant and neuroprotective effects by modulating the Keap1-Nrf2 signaling pathway, providing new insights into the pharmacological potential of <em>L. aggregata</em>.</div></div>","PeriodicalId":20408,"journal":{"name":"Phytochemistry Letters","volume":"69 ","pages":"Article 103035"},"PeriodicalIF":1.4,"publicationDate":"2025-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144913199","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Olasecuthones A-E: Undescribed xanthones from Securidaca Longipedunculata Fresen (Polygalaceae) Olasecuthones A-E：未描述的山仙子（蓼科）中的山酮类化合物
IF 1.4 4区 生物学
Phytochemistry Letters Pub Date : 2025-08-28 DOI: 10.1016/j.phytol.2025.103040
Abdulkabir Oladele Oladimeji , K. Suresh Babu
{"title":"Olasecuthones A-E: Undescribed xanthones from Securidaca Longipedunculata Fresen (Polygalaceae)","authors":"Abdulkabir Oladele Oladimeji ,&nbsp;K. Suresh Babu","doi":"10.1016/j.phytol.2025.103040","DOIUrl":"10.1016/j.phytol.2025.103040","url":null,"abstract":"<div><div>The phytochemical analysis of the root components of <em>Securidaca longipedunculata</em> resulted in the identification of four previously unreported xanthones, designated as olasecuthones A-D (<strong>1–4</strong>), alongside sixteen previously known compounds (<strong>5–20</strong>). The structural elucidation of these compounds was predominantly achieved through one-dimensional and two-dimensional nuclear magnetic resonance (NMR) spectroscopy, complemented by X-ray crystallographic analysis employing molybdenum Kα radiation, and with further validation through comparison with the existing literature. This research also marks the first report of the single crystal X-ray structure characterization of 2-hydroxy-1,7-dimethoxyxanthone (<strong>6</strong>).</div></div>","PeriodicalId":20408,"journal":{"name":"Phytochemistry Letters","volume":"69 ","pages":"Article 103040"},"PeriodicalIF":1.4,"publicationDate":"2025-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144913198","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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