{"title":"Novel Heterocyclic Pyrimidine Derivatives as GSK3α Inhibitors","authors":"Yinlong Li, and , Steven H. Liang*, ","doi":"10.1021/acsmedchemlett.5c0015910.1021/acsmedchemlett.5c00159","DOIUrl":"https://doi.org/10.1021/acsmedchemlett.5c00159https://doi.org/10.1021/acsmedchemlett.5c00159","url":null,"abstract":"<p >This patent highlight describes a series of novel heterocyclic pyrimidine derivatives as glycogen synthase kinase 3 alpha (GSK3α) inhibitors. The disclosed compounds demonstrated excellent subtype selectivity over GSK3β and showed promising efficacy in treating an MC38 mouse model of colorectal cancer.</p>","PeriodicalId":20,"journal":{"name":"ACS Medicinal Chemistry Letters","volume":"16 5","pages":"721–723 721–723"},"PeriodicalIF":3.5,"publicationDate":"2025-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143917262","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Laura Carzaniga, Roberta Mazzucato, Valentina Mileo, Andrea Rizzi, Maura Vallaro, Giuseppe Ermondi, Silvia Cattani, Andrea Secchi, Giulia Caron
{"title":"Macrocyclization: Enhancing Drug-like Properties of Discoidin Domain Receptor Kinase Inhibitors.","authors":"Laura Carzaniga, Roberta Mazzucato, Valentina Mileo, Andrea Rizzi, Maura Vallaro, Giuseppe Ermondi, Silvia Cattani, Andrea Secchi, Giulia Caron","doi":"10.1021/acsmedchemlett.4c00611","DOIUrl":"10.1021/acsmedchemlett.4c00611","url":null,"abstract":"<p><p>Macrocyclization, a well-established strategy for developing ligands against challenging drug targets, was employed to design macrocyclic alternatives to a linear discoidin domain receptor (DDR) inhibitor (<b>1</b>) with potential applications in treating fibrotic diseases. This study aimed to enhance the drug-like profile of <b>1</b> through innovative design strategies encompassing molecular docking and chameleonicity considerations. These efforts resulted in the synthesis of matched pairs of macrocycles differing in flexibility and linker features. Compound <b>5a</b> emerged as a promising lead, exhibiting nanomolar-range activity, significantly improved solubility, and excellent permeability. Comprehensive experimental physicochemical characterization further highlighted the modest impact of ionization, the major role played by lipophilicity (but not polarity) in driving permeability of the investigated matched pairs, and the limitations of traditional 2D computational descriptors in predicting macrocycle ADME-related properties.</p>","PeriodicalId":20,"journal":{"name":"ACS Medicinal Chemistry Letters","volume":"16 5","pages":"784-789"},"PeriodicalIF":3.5,"publicationDate":"2025-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12067128/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143951012","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Novel Tricyclic Compounds as GSK3 Inhibitors","authors":"Yinlong Li, and , Steven H. Liang*, ","doi":"10.1021/acsmedchemlett.5c0016210.1021/acsmedchemlett.5c00162","DOIUrl":"https://doi.org/10.1021/acsmedchemlett.5c00162https://doi.org/10.1021/acsmedchemlett.5c00162","url":null,"abstract":"<p >This patent highlight describes a series of novel tricyclic system-based compounds as glycogen synthase kinase 3 (GSK3) inhibitors. The inhibitory potency of these compounds against GSK3α and GSK3β has been evaluated, and their potential applications in treating GSK3-related diseases are explored.</p>","PeriodicalId":20,"journal":{"name":"ACS Medicinal Chemistry Letters","volume":"16 5","pages":"724–727 724–727"},"PeriodicalIF":3.5,"publicationDate":"2025-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143917257","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Novel 2-Pyrrolidone Derivatives as Negative Allosteric Modulators of GluN2B-Containing NMDA Receptors.","authors":"Yinlong Li, Steven H Liang","doi":"10.1021/acsmedchemlett.5c00157","DOIUrl":"10.1021/acsmedchemlett.5c00157","url":null,"abstract":"<p><p>This patent highlight describes a series of novel 2-pyrrolidone derivatives that act as negative allosteric modulators (NAMs) of GluN2B-containing <i>N</i>-methyl-d-aspartic acid receptors (NMDARs). These compounds target the ifenprodil binding site of the NMDA receptor and exhibit enhanced metabolic stability compared to traditional phenolic-based molecules.</p>","PeriodicalId":20,"journal":{"name":"ACS Medicinal Chemistry Letters","volume":"16 5","pages":"719-720"},"PeriodicalIF":3.5,"publicationDate":"2025-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12067126/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143950651","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Novel 2-Pyrrolidone Derivatives as Negative Allosteric Modulators of GluN2B-Containing NMDA Receptors","authors":"Yinlong Li, and , Steven H. Liang*, ","doi":"10.1021/acsmedchemlett.5c0015710.1021/acsmedchemlett.5c00157","DOIUrl":"https://doi.org/10.1021/acsmedchemlett.5c00157https://doi.org/10.1021/acsmedchemlett.5c00157","url":null,"abstract":"<p >This patent highlight describes a series of novel 2-pyrrolidone derivatives that act as negative allosteric modulators (NAMs) of GluN2B-containing <i>N</i>-methyl-<span>d</span>-aspartic acid receptors (NMDARs). These compounds target the ifenprodil binding site of the NMDA receptor and exhibit enhanced metabolic stability compared to traditional phenolic-based molecules.</p>","PeriodicalId":20,"journal":{"name":"ACS Medicinal Chemistry Letters","volume":"16 5","pages":"719–720 719–720"},"PeriodicalIF":3.5,"publicationDate":"2025-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143917255","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Novel Tricyclic Compounds as GSK3 Inhibitors.","authors":"Yinlong Li, Steven H Liang","doi":"10.1021/acsmedchemlett.5c00162","DOIUrl":"10.1021/acsmedchemlett.5c00162","url":null,"abstract":"<p><p>This patent highlight describes a series of novel tricyclic system-based compounds as glycogen synthase kinase 3 (GSK3) inhibitors. The inhibitory potency of these compounds against GSK3α and GSK3β has been evaluated, and their potential applications in treating GSK3-related diseases are explored.</p>","PeriodicalId":20,"journal":{"name":"ACS Medicinal Chemistry Letters","volume":"16 5","pages":"724-727"},"PeriodicalIF":3.5,"publicationDate":"2025-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12067121/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143951163","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Yagmur U. Doruk, Morgan E. Diolaiti, Alan Ashworth* and Tanaji T. Talele*,
{"title":"Discovery of a Novel [6–6–5–5–6] Pentacyclic Tetrahydrocyclopentaphthalazinone as a Promising PARP Inhibitor Scaffold","authors":"Yagmur U. Doruk, Morgan E. Diolaiti, Alan Ashworth* and Tanaji T. Talele*, ","doi":"10.1021/acsmedchemlett.4c0060310.1021/acsmedchemlett.4c00603","DOIUrl":"https://doi.org/10.1021/acsmedchemlett.4c00603https://doi.org/10.1021/acsmedchemlett.4c00603","url":null,"abstract":"<p >Inhibitors of poly(ADP-ribose) polymerases (PARPs) have revolutionized the treatment of cancers with DNA repair deficiencies. Here we describe the structure-based discovery and synthesis of 6–6–5–5–6-fused pentacyclic scaffolds <b>5</b> and <i>cis</i>-(±)-<b>6</b> as a novel class of PARP1 inhibitors. Chiral supercritical fluid chromatographic separation of <i>cis</i>-(±)-<b>6</b> afforded inactive <i>ent</i>-<b>6_P1</b> and active <i>ent</i>-<b>6_P2</b>. Compound <b>5</b> (P-gp ER = 0.9) and <i>ent</i>-<b>6_P2</b> (P-gp ER = 1.1) demonstrated good Caco-2 permeability and are not actively effluxed by ABC transporters. <i>In vitro</i> analysis in HEK293T cells found that <b>5</b>, <i>cis</i>-(±)-<b>6</b>, and <i>ent</i>-<b>6_P2</b> showed near complete inhibition of PARP1 activity at 10 μM. Furthermore, compounds <b>5</b>, <i>cis</i>-(±)-<b>6</b>, and <i>ent</i>-<b>6_P2</b> displayed selective cytotoxic activity in <i>BRCA</i> mutant cancer cells but not isogenic <i>BRCA</i>-proficient cells. Taken together, <b>5</b> and <i>ent</i>-<b>6_P2</b> define a novel class of lead PARP inhibitors for further development.</p>","PeriodicalId":20,"journal":{"name":"ACS Medicinal Chemistry Letters","volume":"16 5","pages":"776–783 776–783"},"PeriodicalIF":3.5,"publicationDate":"2025-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143917046","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Yagmur U Doruk, Morgan E Diolaiti, Alan Ashworth, Tanaji T Talele
{"title":"Discovery of a Novel [6-6-5-5-6] Pentacyclic Tetrahydrocyclopentaphthalazinone as a Promising PARP Inhibitor Scaffold.","authors":"Yagmur U Doruk, Morgan E Diolaiti, Alan Ashworth, Tanaji T Talele","doi":"10.1021/acsmedchemlett.4c00603","DOIUrl":"10.1021/acsmedchemlett.4c00603","url":null,"abstract":"<p><p>Inhibitors of poly(ADP-ribose) polymerases (PARPs) have revolutionized the treatment of cancers with DNA repair deficiencies. Here we describe the structure-based discovery and synthesis of 6-6-5-5-6-fused pentacyclic scaffolds <b>5</b> and <i>cis</i>-(±)-<b>6</b> as a novel class of PARP1 inhibitors. Chiral supercritical fluid chromatographic separation of <i>cis</i>-(±)-<b>6</b> afforded inactive <i>ent</i>-<b>6_P1</b> and active <i>ent</i>-<b>6_P2</b>. Compound <b>5</b> (P-gp ER = 0.9) and <i>ent</i>-<b>6_P2</b> (P-gp ER = 1.1) demonstrated good Caco-2 permeability and are not actively effluxed by ABC transporters. <i>In vitro</i> analysis in HEK293T cells found that <b>5</b>, <i>cis</i>-(±)-<b>6</b>, and <i>ent</i>-<b>6_P2</b> showed near complete inhibition of PARP1 activity at 10 μM. Furthermore, compounds <b>5</b>, <i>cis</i>-(±)-<b>6</b>, and <i>ent</i>-<b>6_P2</b> displayed selective cytotoxic activity in <i>BRCA</i> mutant cancer cells but not isogenic <i>BRCA</i>-proficient cells. Taken together, <b>5</b> and <i>ent</i>-<b>6_P2</b> define a novel class of lead PARP inhibitors for further development.</p>","PeriodicalId":20,"journal":{"name":"ACS Medicinal Chemistry Letters","volume":"16 5","pages":"776-783"},"PeriodicalIF":3.5,"publicationDate":"2025-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12067119/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143950696","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Gibae Kim, Grim Lee, Dnyandev B Jarhad, Zhan-Guo Gao, Seung Woo Kim, Misuk Joung, Kenneth A Jacobson, Lak Shin Jeong
{"title":"Structure-Activity Relationship Analysis of 2-Aryl-8-alkynyl Adenine and Nucleoside Scaffolds as A<sub>3</sub> Adenosine Receptor Ligands.","authors":"Gibae Kim, Grim Lee, Dnyandev B Jarhad, Zhan-Guo Gao, Seung Woo Kim, Misuk Joung, Kenneth A Jacobson, Lak Shin Jeong","doi":"10.1021/acsmedchemlett.5c00138","DOIUrl":"10.1021/acsmedchemlett.5c00138","url":null,"abstract":"<p><p>Numerous adenosine receptor (AR) ligands have been synthesized over many years, but the development of 2,8-disubstituted nucleoside derivatives was limited due to the lack of efficient synthetic methods. Leveraging Pd catalyst-controlled regioselective coupling, we embarked on structure-activity relationship (SAR) analyses at the C8 position. Our SAR studies revealed that an aliphatic alkyne chain of specific length, such as 1-hexyne, at the C8 position is ideally suited for hA<sub>2A</sub>AR interaction. A computational docking study revealed that the π-π interaction between His95<sup>3.37</sup> and C8-aromatic alkyne could induce an active conformation of hA<sub>3</sub>AR. Notably, compound <b>7b</b> demonstrated exceptional potency and selectivity at hA<sub>3</sub>AR (<i>K</i> <sub><i>i</i>,<i>hA3</i></sub> = 3.0 ± 0.5 nM), acting as the first 2,8-disubstituted nucleoside A<sub>3</sub>AR partial agonist. It underscores the strategic importance of C8 position modifications in modulating AR activity and function, paving the way for novel therapeutic agents targeting AR-mediated diseases.</p>","PeriodicalId":20,"journal":{"name":"ACS Medicinal Chemistry Letters","volume":"16 5","pages":"880-886"},"PeriodicalIF":3.5,"publicationDate":"2025-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12067138/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143953487","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Novel Pyrido[3,4-d]pyrimidin-4-one and Pyrimido[5,4-d]pyrimidin-4-one Derivatives as TREM2 Agonists for Treating Parkinson’s Disease","authors":"Ram W. Sabnis*, ","doi":"10.1021/acsmedchemlett.5c0014510.1021/acsmedchemlett.5c00145","DOIUrl":"https://doi.org/10.1021/acsmedchemlett.5c00145https://doi.org/10.1021/acsmedchemlett.5c00145","url":null,"abstract":"<p >Provided herein are novel pyrido[3,4-<i>d</i>]pyrimidin-4-one and pyrimido[5,4-<i>d</i>]pyrimidin-4-one derivatives as TREM2 agonists, pharmaceutical compositions, use of such compounds in treating Parkinson’s disease, and processes for preparing such compounds.</p>","PeriodicalId":20,"journal":{"name":"ACS Medicinal Chemistry Letters","volume":"16 5","pages":"715–716 715–716"},"PeriodicalIF":3.5,"publicationDate":"2025-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143917109","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}