European Journal of Medicinal Chemistry Reports最新文献

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Research progress of sustained-release microsphere technology in drug delivery 缓释微球技术在给药中的研究进展
European Journal of Medicinal Chemistry Reports Pub Date : 2025-12-01 Epub Date: 2025-09-26 DOI: 10.1016/j.ejmcr.2025.100299
Tao-Tao Ge, Hai-Yan Guo, Chun-Mei Zhang, Shu-Feng Li
{"title":"Research progress of sustained-release microsphere technology in drug delivery","authors":"Tao-Tao Ge,&nbsp;Hai-Yan Guo,&nbsp;Chun-Mei Zhang,&nbsp;Shu-Feng Li","doi":"10.1016/j.ejmcr.2025.100299","DOIUrl":"10.1016/j.ejmcr.2025.100299","url":null,"abstract":"<div><div>sustained-release microsphere technology, with its unique advantages of prolonged controlled release, enhanced therapeutic efficacy, reduced side effects, and improved patient compliance, has emerged as a research hotspot in modern drug delivery. This review systematically summarizes recent advances in sustained-release microspheres in the biomedical field. First, the core concepts and distinct advantages of this approach, compared with conventional drug administration, are elaborated. Subsequently, the principles and features of key preparation techniques, including emulsion–solvent evaporation, spray drying, and advanced microfluidic methods, are highlighted. Furthermore, the applications and validation of microsphere-based systems in diverse therapeutic areas—such as transarterial chemoembolization for cancer, chronic disease management (e.g., diabetes, psychiatric disorders), and local targeted therapies (e.g., ophthalmology, postoperative analgesia)—are critically discussed. Finally, the current challenges and future perspectives of this technology are outlined, providing insights for its further development and clinical translation.</div></div>","PeriodicalId":12015,"journal":{"name":"European Journal of Medicinal Chemistry Reports","volume":"15 ","pages":"Article 100299"},"PeriodicalIF":0.0,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145216488","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Halogen-containing NHC and bis-NHC silver complexes. Synthesis, structure and antimicrobial activity 含卤NHC和双NHC银配合物。合成、结构和抗菌活性
European Journal of Medicinal Chemistry Reports Pub Date : 2025-12-01 Epub Date: 2025-09-23 DOI: 10.1016/j.ejmcr.2025.100298
Alexandr S. Avksentiev , Vagiz Sh Saberov , Svetlana V. Shishkina , Alexey B. Ryabitsky , Olena Z. Komarovska-Porokhnyavets , Vira I. Lubenets , Vitaliy A. Matvienko , Gennady F. Rayenko , Liubov M. Vakhitova , Nikolai I. Korotkikh
{"title":"Halogen-containing NHC and bis-NHC silver complexes. Synthesis, structure and antimicrobial activity","authors":"Alexandr S. Avksentiev ,&nbsp;Vagiz Sh Saberov ,&nbsp;Svetlana V. Shishkina ,&nbsp;Alexey B. Ryabitsky ,&nbsp;Olena Z. Komarovska-Porokhnyavets ,&nbsp;Vira I. Lubenets ,&nbsp;Vitaliy A. Matvienko ,&nbsp;Gennady F. Rayenko ,&nbsp;Liubov M. Vakhitova ,&nbsp;Nikolai I. Korotkikh","doi":"10.1016/j.ejmcr.2025.100298","DOIUrl":"10.1016/j.ejmcr.2025.100298","url":null,"abstract":"<div><div>It was found that the <em>in-situ</em> reaction of halogen-containing imidazolium and benzimidazolium salts with silver nitrate, chloride, iodide or perchlorate in the presence of potassium carbonate leads to the corresponding monocarbene (NHC) (LAgX) and bis-NHC silver complexes (L<sub>2</sub>AgX) including the first strongly sterically shielded bis-NHC complexes (IPr)<sub>2</sub>AgX. In the presence of o-phenanthroline, carbene-phenanthroline complex (IPr∗)(phen)AgClO<sub>4</sub> was obtained. The reactions can be an addition to the known method of Lin with the use of silver oxide. The halogenide silver carbene complexes are also obtained by the exchange of the anion from the ionic perchlorate complexes to halogenide ions (Cl<sup>−</sup>, I<sup>−</sup>). The structure of the synthesized compounds is confirmed by the methods of <sup>1</sup>H and <sup>13</sup>C NMR spectroscopy and for five compounds by the X-ray diffraction study. Most compounds have an ionic character in crystals and in solutions, even for the complex with a sterically shielded silver atom (IPr)<sub>2</sub>AgNO<sub>3</sub> and monocarbene complexes. Synthesized complexes show high antibacterial (MIC up to 1.9 μg/mL on <em>M. luteum</em>) and antifungal activity (MIC up to 0.9 μg/mL on <em>A. niger</em> and 1.9 μg/mL on <em>C. tenuis</em>).</div></div>","PeriodicalId":12015,"journal":{"name":"European Journal of Medicinal Chemistry Reports","volume":"15 ","pages":"Article 100298"},"PeriodicalIF":0.0,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145265660","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Dual-target candidate compounds from a transformer chemical language model contain characteristic structural features 从变压器化学语言模型的双目标候选化合物包含特征的结构特征
European Journal of Medicinal Chemistry Reports Pub Date : 2025-12-01 Epub Date: 2025-07-30 DOI: 10.1016/j.ejmcr.2025.100291
Sanjana Srinivasan , Alec Lamens , Jürgen Bajorath
{"title":"Dual-target candidate compounds from a transformer chemical language model contain characteristic structural features","authors":"Sanjana Srinivasan ,&nbsp;Alec Lamens ,&nbsp;Jürgen Bajorath","doi":"10.1016/j.ejmcr.2025.100291","DOIUrl":"10.1016/j.ejmcr.2025.100291","url":null,"abstract":"<div><div>Chemical language models (CLMs) are increasingly used for generative design of candidate compounds for medicinal chemistry. However, their predictions are difficult to rationalize. Currently, detailed computational explanations of CLM-based compound generation are unavailable. Therefore, we have attempted to better understand from a medicinal chemistry perspective how CLMs learn and arrive at compound predictions. Therefore, we have subjected dual-target candidate compounds for polypharmacology generated with transformer CLMs to a series of analysis steps exploring structural features that are learned and compared them to known compounds with dual-target activity. Using machine learning combined with distinct chemical structure-oriented approaches from explainable artificial intelligence, we show that CLMs learn substructures characteristic of known dual-target compounds as a basis for generating new candidates with various chemical modifications.</div></div>","PeriodicalId":12015,"journal":{"name":"European Journal of Medicinal Chemistry Reports","volume":"15 ","pages":"Article 100291"},"PeriodicalIF":0.0,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144750759","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Regulation of mitochondrial potassium BKCa channel by naringenin derivatives: application of a new cellular model 柚皮素衍生物对线粒体BKCa钾通道的调控:一种新的细胞模型的应用
European Journal of Medicinal Chemistry Reports Pub Date : 2025-12-01 Epub Date: 2025-10-22 DOI: 10.1016/j.ejmcr.2025.100304
Aleksandra Sęk , Silvia Cammarone , Rafał P. Kampa , Karolina Pytlak , Barbara Kalenik , Joanna Lewandowska , Francesca Ghirga , Isabella Romeo , Omar Atrooz , Piotr Bednarczyk , Adam Szewczyk , Bruno Botta , Deborah Quaglio , Bogusz Kulawiak
{"title":"Regulation of mitochondrial potassium BKCa channel by naringenin derivatives: application of a new cellular model","authors":"Aleksandra Sęk ,&nbsp;Silvia Cammarone ,&nbsp;Rafał P. Kampa ,&nbsp;Karolina Pytlak ,&nbsp;Barbara Kalenik ,&nbsp;Joanna Lewandowska ,&nbsp;Francesca Ghirga ,&nbsp;Isabella Romeo ,&nbsp;Omar Atrooz ,&nbsp;Piotr Bednarczyk ,&nbsp;Adam Szewczyk ,&nbsp;Bruno Botta ,&nbsp;Deborah Quaglio ,&nbsp;Bogusz Kulawiak","doi":"10.1016/j.ejmcr.2025.100304","DOIUrl":"10.1016/j.ejmcr.2025.100304","url":null,"abstract":"<div><div>Mitochondrial potassium (mitoK) channels play a crucial role in mitochondrial and cellular physiology. One of the best described mitoK channels is the mitochondrial large-conductance calcium-activated potassium (mitoBK<sub>Ca</sub>) channel. It has been shown that activation of the mitoBK<sub>Ca</sub> channel protects the heart and brain tissue against ischemia/reperfusion injury. This channel may be formed in mitochondria by the VEDEC isoform of the α subunit encoded by the KCNMA1 gene. In addition to regulation by canonical channel blockers and potassium channel openers, this channel is regulated by flavonoids, including naringenin. Our work aimed to establish and use a new cellular model to investigate the role of new naringenin derivatives in regulating the activity of the mitoBK<sub>Ca</sub> channel. We developed HEK293 cells stably expressing the VEDEC isoform of the BK<sub>Ca</sub> (HEK293-BK_DEC). Using the patch-clamp technique on isolated mitoplasts from the newly established cell line, we detected the activity of a potassium channel exhibiting all the characteristics of the mitoBK<sub>Ca</sub> channel, such as a conductance of 289 pS, voltage-dependent changes in opening probability, channel activation by calcium ions, and inhibition by paxilline. Additionally, introducing the VEDEC isoform into HEK293 cells led to an increase in the mitochondrial oxygen consumption rate and a change in the expression of certain genes encoding mitochondrial proteins involved in oxidative phosphorylation. Subsequently, we investigated the influence of new naringenin derivatives on the activity of the mitoBK<sub>Ca</sub> channel. We observed that depending on the type of modification of this flavonoid, the channel could be activated or inhibited by the tested naringenin derivatives. In summary, we have developed a new experimental model enabling the study of mitoK channel activity with a defined molecular structure exemplified by the mitoBK<sub>Ca</sub> channel. This model can be used to test new modulators of the mitochondrial potassium channels, which could be employed for further physiological studies in the future.</div></div>","PeriodicalId":12015,"journal":{"name":"European Journal of Medicinal Chemistry Reports","volume":"15 ","pages":"Article 100304"},"PeriodicalIF":0.0,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145412594","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
New promising transthyretin stabilizers for cardiac amyloidosis treatment 治疗心脏淀粉样变性的新有前途的转甲状腺素稳定剂
European Journal of Medicinal Chemistry Reports Pub Date : 2025-12-01 Epub Date: 2025-11-01 DOI: 10.1016/j.ejmcr.2025.100308
Lidia Ciccone , Caterina Camodeca , Carole Fruchart-Gaillard , Robert Thaï , Nicolò Tonali , Giuseppina Basta , Serena Del Turco , Lara Russo , Magali Noiray , Serena Sirigu , William Shepard , Lucia Barlettani , Francesco Mazzocchi , Elisabetta Orlandini , Susanna Nencetti
{"title":"New promising transthyretin stabilizers for cardiac amyloidosis treatment","authors":"Lidia Ciccone ,&nbsp;Caterina Camodeca ,&nbsp;Carole Fruchart-Gaillard ,&nbsp;Robert Thaï ,&nbsp;Nicolò Tonali ,&nbsp;Giuseppina Basta ,&nbsp;Serena Del Turco ,&nbsp;Lara Russo ,&nbsp;Magali Noiray ,&nbsp;Serena Sirigu ,&nbsp;William Shepard ,&nbsp;Lucia Barlettani ,&nbsp;Francesco Mazzocchi ,&nbsp;Elisabetta Orlandini ,&nbsp;Susanna Nencetti","doi":"10.1016/j.ejmcr.2025.100308","DOIUrl":"10.1016/j.ejmcr.2025.100308","url":null,"abstract":"<div><div>Transthyretin (TTR) is a plasma protein responsible for transport of thyroxine and retinol, the latter through binding with the retinol-binding protein. In contrast with its physiological role, TTR possesses an intrinsic amyloidogenic potential due to the high content of β-strands. Under pathological conditions, TTR undergoes a misfolding process forming protein aggregates and fibrils that cause organ damage and dysfunction, leading to the onset of TTR amyloidosis diseases (ATTRs). One therapeutic approach against ATTRs progression involves administering small molecules able to bind the inner channel of the protein enhancing tetramer stability. Here, we report the synthesis and characterization of 2-(((benzyloxy)imino)methyl)benzoic acids (<strong>1a-l</strong>), 3-(((benzyloxy)imino)methyl)benzoic acids (<strong>2a-l</strong>) and 4-(((benzyloxy)imino)methyl)benzoic acids (<strong>3a-l</strong>) as new potential inhibitors of TTR fibril formation. Our study shows that compounds <strong>1a</strong> ((<em>E</em>)-2-((((2-(trifluoromethyl)benzyl)oxy)imino)methyl)benzoic acid)), <strong>1d</strong> ((<em>E</em>)-2-((((2-chlorobenzyl)oxy)imino)methyl)benzoic acid), <strong>2l</strong> ((<em>E</em>)-3-((((2-chloro-6-fluorobenzyl)oxy)imino)methyl)benzoic acid) and <strong>3g</strong> ((<em>E</em>)-4-((((2-methoxybenzyl)oxy)imino)methyl)benzoic acid) effectively inhibit the aggregation of wild-type TTR (wt-TTR) and mutants (V30M, V122I). Among these derivatives <strong>1a</strong> and <strong>1d</strong> have stronger ability to contrast the fibril formations. The binding affinity of <strong>1a</strong>, <strong>1d</strong>, <strong>2l</strong> with TTR (wt, V30M and V122I) was determined by fluorescence displacement assay and isothermal titration calorimetry. The binding modes of the selected ligands have been confirmed by X-ray crystallography. Moreover, these compounds show no toxicity in endothelial and cardiomyocyte cells, reinforcing their potential as TTR stabilizers.</div></div>","PeriodicalId":12015,"journal":{"name":"European Journal of Medicinal Chemistry Reports","volume":"15 ","pages":"Article 100308"},"PeriodicalIF":0.0,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145462997","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
TCS-isatin-INH triads as potent and selective anti-mycobacterial with high efficacy against Mycobacterium tuberculosis TCS-isatin-INH三联抗结核分枝杆菌具有高效的抗结核效果
European Journal of Medicinal Chemistry Reports Pub Date : 2025-12-01 Epub Date: 2025-10-27 DOI: 10.1016/j.ejmcr.2025.100307
Shekhar , Francoise Roquet-Banères , Laurent Kremer , Vipan Kumar
{"title":"TCS-isatin-INH triads as potent and selective anti-mycobacterial with high efficacy against Mycobacterium tuberculosis","authors":"Shekhar ,&nbsp;Francoise Roquet-Banères ,&nbsp;Laurent Kremer ,&nbsp;Vipan Kumar","doi":"10.1016/j.ejmcr.2025.100307","DOIUrl":"10.1016/j.ejmcr.2025.100307","url":null,"abstract":"<div><div>A series of novel Triclosan–Isatin–Isoniazid triads were synthesized and evaluated for antitubercular activity. These hybrids showed potent efficacy against <em>Mycobacterium tuberculosis</em> with low minimum inhibitory concentrations (MICs) ranging from 0.78 to 1.56 μg/mL, along with high selectivity indices, indicating strong activity with minimal cytotoxicity in human macrophages. Time-kill assays revealed bactericidal effects, with some hybrids achieving sustained bacterial growth suppression comparable to INH at equivalent MICs. At higher doses, a 3-log reduction in bacterial viability was achieved within three days, with one triad showing an additional 1-log reduction by day six. Mechanistic evaluation using INH-resistant <em>katG</em> mutant strains revealed reduction in activity, indicating KatG-dependent bioactivation. Cytotoxicity assays confirmed low toxicity (IC<sub>50</sub> &gt; 100 μg/mL), underscoring their potential as safe and effective anti-TB agents.</div></div>","PeriodicalId":12015,"journal":{"name":"European Journal of Medicinal Chemistry Reports","volume":"15 ","pages":"Article 100307"},"PeriodicalIF":0.0,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145412597","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Design, synthesis, and binding analysis of target-specific covalent inhibitors of SARS-CoV-2 papain-like protease SARS-CoV-2木瓜蛋白酶特异性共价抑制剂的设计、合成和结合分析
European Journal of Medicinal Chemistry Reports Pub Date : 2025-12-01 Epub Date: 2025-10-27 DOI: 10.1016/j.ejmcr.2025.100306
Martynas Bagdonas , Laimonas Stančaitis , Ernestas Urniežius , Audrius Zakšauskas , Aurelija Mickevičiūtė , Rūta Kananavičiūtė , Audronė Rukšėnaitė , Vaida Juozapaitienė , Jurgita Matulienė , Visvaldas Kairys , Franz-Josef Meyer-Almes , Asta Zubrienė , Daumantas Matulis
{"title":"Design, synthesis, and binding analysis of target-specific covalent inhibitors of SARS-CoV-2 papain-like protease","authors":"Martynas Bagdonas ,&nbsp;Laimonas Stančaitis ,&nbsp;Ernestas Urniežius ,&nbsp;Audrius Zakšauskas ,&nbsp;Aurelija Mickevičiūtė ,&nbsp;Rūta Kananavičiūtė ,&nbsp;Audronė Rukšėnaitė ,&nbsp;Vaida Juozapaitienė ,&nbsp;Jurgita Matulienė ,&nbsp;Visvaldas Kairys ,&nbsp;Franz-Josef Meyer-Almes ,&nbsp;Asta Zubrienė ,&nbsp;Daumantas Matulis","doi":"10.1016/j.ejmcr.2025.100306","DOIUrl":"10.1016/j.ejmcr.2025.100306","url":null,"abstract":"<div><div>The global emergence of severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) in 2019 resulted in widespread consequences for human health, with an ongoing situation six years later. Despite extensive efforts, the virus continues to circulate, resulting in a persistent rate of new diagnoses and fatalities. The potential for future outbreaks is heightened by the emergence of new mutations, underscoring the need for effective additional treatment options, such as antiviral drugs, to prevent the difficulties experienced during the COVID-19 pandemic. In this study, a structure-guided ligand design strategy was applied to optimize the SARS-CoV-2 papain-like protease (PL<sup>pro</sup>) inhibitor GRL0617 and enhance its potency. A series of covalent inhibitors was synthesized, and their inhibition potential, target-specificity, binding mode, and selectivity against several human proteases were evaluated. Two compounds, <strong>LS 22</strong>–<strong>5</strong> and <strong>AZ 23</strong>–<strong>6</strong>, demonstrating the nanomolar inhibition potential of PL<sup>pro</sup>, were identified as lead compounds for antiviral drug design.</div></div>","PeriodicalId":12015,"journal":{"name":"European Journal of Medicinal Chemistry Reports","volume":"15 ","pages":"Article 100306"},"PeriodicalIF":0.0,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145412592","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Repurposing of compound libraries yields new inhibitors of NDM-1 metallo-β-lactamase with diverse zinc-binding moieties 对化合物文库的重新利用产生了具有不同锌结合部分的NDM-1金属β-内酰胺酶的新抑制剂
European Journal of Medicinal Chemistry Reports Pub Date : 2025-12-01 Epub Date: 2025-06-19 DOI: 10.1016/j.ejmcr.2025.100282
Vid Kavaš , Philip Hinchliffe , Maša Zorman , Alen Krajnc , Matic Proj , Majda Golob , Martina Hrast Rambaher , James Spencer , Stanislav Gobec
{"title":"Repurposing of compound libraries yields new inhibitors of NDM-1 metallo-β-lactamase with diverse zinc-binding moieties","authors":"Vid Kavaš ,&nbsp;Philip Hinchliffe ,&nbsp;Maša Zorman ,&nbsp;Alen Krajnc ,&nbsp;Matic Proj ,&nbsp;Majda Golob ,&nbsp;Martina Hrast Rambaher ,&nbsp;James Spencer ,&nbsp;Stanislav Gobec","doi":"10.1016/j.ejmcr.2025.100282","DOIUrl":"10.1016/j.ejmcr.2025.100282","url":null,"abstract":"<div><div>Antimicrobial resistance has emerged as a critical global public health threat, impacting human, animal and environmental health. An important mechanism of resistance is the production of β-lactamases, enzymes that hydrolyze the β-lactam ring, rendering β-lactam antibiotics ineffective. Metallo-β-lactamases (MBLs), which contain zinc ions in their active sites, are particularly challenging to counter as there are currently no inhibitors targeting these enzymes available on the market. Therefore, there is an urgent need for innovative drug discovery strategies to develop MBL-targeted therapies. New Delhi Metallo-β-Lactamase 1 (NDM-1) is the most widely disseminated MBL, with a global distribution in <em>Enterobacterales</em>. In this study, we used our library of fragment-sized chloroacetamides as a starting point to synthesize mercaptoacetamides as potential NDM-1 inhibitors. This resulted in a compound (<strong>14a</strong>) with an IC<sub>50</sub> of 20 μM, which crystallography shows binds to NDM-1 in two different poses. Using this structure as a starting point for <em>in silico</em> design, we developed a series of larger thiol-based compounds designed to occupy more space in the active site and to utilize other novel zinc-binding groups. Although some showed minimal inhibition (which makes them valuable as decoys for metalloenzyme studies) one compound exhibited an IC<sub>50</sub> of 14 μM, with crystallography indicating that an additional aromatic group, compared to <strong>14a</strong>, interacts with hydrophobic residues on an NDM-1 active site loop. These data identify promising scaffolds for the further development of potent MBL inhibitors and show the utility of repurposing chemical libraries to target clinically important enzymes.</div></div>","PeriodicalId":12015,"journal":{"name":"European Journal of Medicinal Chemistry Reports","volume":"15 ","pages":"Article 100282"},"PeriodicalIF":0.0,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144364922","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
New cytotoxic dolabellane and dolastane diterpenes from Brown seaweed Dictyota dichotoma 褐藻中新的细胞毒性一元藻烷和一元藻烷二萜
European Journal of Medicinal Chemistry Reports Pub Date : 2025-12-01 Epub Date: 2025-07-17 DOI: 10.1016/j.ejmcr.2025.100286
Kolukula Ashwini , Bandi Siva , Penta Poornima , Solipeta Divya Reddy , Hashnu Dutta , Vedula Girija Sastry , Katragadda Suresh Babu
{"title":"New cytotoxic dolabellane and dolastane diterpenes from Brown seaweed Dictyota dichotoma","authors":"Kolukula Ashwini ,&nbsp;Bandi Siva ,&nbsp;Penta Poornima ,&nbsp;Solipeta Divya Reddy ,&nbsp;Hashnu Dutta ,&nbsp;Vedula Girija Sastry ,&nbsp;Katragadda Suresh Babu","doi":"10.1016/j.ejmcr.2025.100286","DOIUrl":"10.1016/j.ejmcr.2025.100286","url":null,"abstract":"<div><div>Five new dolabellane (<strong>1</strong>–<strong>5</strong>), three dolastane (<strong>6</strong>–<strong>8</strong>) type diterpenes together with five previously identified congeners (<strong>9</strong>–<strong>13</strong>), were isolated from the organic extracts of the brown seaweed <em>Dictyota dichotoma,</em> collected in the Mandapam coast, Tamil Nadu. The structures and relative stereochemistry of the new isolates <strong>1</strong>–<strong>8</strong> were determined on the basis of extensive spectroscopic (NMR and Mass spec) data, whereas the structures of <strong>10</strong> and <strong>12</strong> were verified by X-ray diffraction analysis. A plausible biogenetic relationship between undescribed compounds <strong>1</strong>–<strong>8</strong> were also proposed. The <em>in vitro</em> anti-cancer activity of the isolates was examined against a panel of cancer cell lines, including DU145 (prostate), B16F10 (melanoma), HeLa (cervical), and MDA-MB231 (breast) using MTT assay. The screening results showed that majority of the isolated compounds exhibited moderate to potent activities against tested cell lines. Among the tested, compounds <strong>4</strong> and <strong>7</strong> manifested potent activities with an IC<sub>50</sub> value of 3.53 ± 0.05 and 2.18 ± 0.06 μM respectively, against B16F10 and DU145 cells. Further, detailed fluorescence assays, scratch assay and flow cytometry analysis revealed that the compounds <strong>4</strong> and <strong>7</strong> diminished proliferation and arrested cell cycle in the G0 phase and G0/G1 phase, which induced cell death by apoptosis. Overall, this study provided that compounds <strong>4</strong> and <strong>7</strong> could serve as lead molecules for the development of potent anti-cancer agents.</div></div>","PeriodicalId":12015,"journal":{"name":"European Journal of Medicinal Chemistry Reports","volume":"15 ","pages":"Article 100286"},"PeriodicalIF":0.0,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144686406","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Pharmacognosy and natural product chemistry of the marine sponge Hyrtios erectus 海绵的生药学及天然产物化学研究
European Journal of Medicinal Chemistry Reports Pub Date : 2025-12-01 Epub Date: 2025-10-14 DOI: 10.1016/j.ejmcr.2025.100303
Christian Bailly
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