Demet Ataman Sadık*, Cemre Sare Cansız, Merve Turğut, Çağdaş Dağ and Memed Duman,
{"title":"","authors":"Demet Ataman Sadık*, Cemre Sare Cansız, Merve Turğut, Çağdaş Dağ and Memed Duman, ","doi":"","DOIUrl":"","url":null,"abstract":"","PeriodicalId":13,"journal":{"name":"ACS Chemical Neuroscience","volume":"16 15","pages":"XXX-XXX XXX-XXX"},"PeriodicalIF":3.9,"publicationDate":"2025-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/pdf/10.1021/acschemneuro.5c00238","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144778974","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}
Daniela Malafaia, Natércia F. Brás, Anna Sampietro, Inês Quintelas, Pedro Ferreira, Lúcia Melo, Joana Saavedra, Loreto Martinez-Gonzalez, Marisa Pereira, Jessica Sarabando, Leo König, Isabel Cardoso, Daniela Ribeiro, Ana R. Soares, Raimon Sabaté, Gert Fricker, Ana Martinez, Pedro A. Fernandes, Artur M. S. Silva and Hélio M. T. Albuquerque*,
{"title":"Design, Synthesis and Biological Evaluation of Chromeno[3,4-b]xanthones as Multifunctional Agents for Alzheimer’s Disease","authors":"Daniela Malafaia, Natércia F. Brás, Anna Sampietro, Inês Quintelas, Pedro Ferreira, Lúcia Melo, Joana Saavedra, Loreto Martinez-Gonzalez, Marisa Pereira, Jessica Sarabando, Leo König, Isabel Cardoso, Daniela Ribeiro, Ana R. Soares, Raimon Sabaté, Gert Fricker, Ana Martinez, Pedro A. Fernandes, Artur M. S. Silva and Hélio M. T. Albuquerque*, ","doi":"10.1021/acschemneuro.5c00425","DOIUrl":"10.1021/acschemneuro.5c00425","url":null,"abstract":"<p >Alzheimer’s disease (AD) remains a complex and unmet medical challenge, requiring innovative approaches to address its multifaceted pathology. In this study, we explored chromeno[3,4-<i>b</i>]xanthones as a novel multifunctional scaffold, synthesized via the straightforward cyclization of their precursor, (<i>E</i>)-2-styrylchromones. Compounds <b>10</b> and <b>11q</b>–<b>s</b> exhibited potent and selective cholinesterase inhibition (IC<sub>50</sub> 1.7–9.0 μM for AChE and BChE), along with significant antiamyloid activity (inhibition exceeding 50% at 50 μM). Among them, compound <b>11r</b> demonstrated the most well-balanced multifunctional profile against all four AD-relevant targets. Molecular docking studies revealed key π-stacking, hydrogen bonding, and halogen interactions, which underlie the selective binding of compound <b>11r</b> to AChE and BChE. Moreover, docking and molecular dynamics simulations showed that compound <b>11r</b> binds strongly to the L-S-shaped β-amyloid 1–42 (Aβ<sub>42</sub>) fibril with a binding affinity of −11.3 kcal/mol, representing a structural barrier to Aβ<sub>42</sub> elongation. Additionally, compound <b>11r</b>, selected as the representative scaffold, effectively disrupted Aβ aggregation, as demonstrated by <i>in vitro</i> studies, transmission electron microscopy (TEM), and cellular studies. It also displayed favorable drug-like properties, including predicted blood-brain barrier (BBB) permeability and an acceptable safety profile at active doses. The calcein-AM-assay also showed that this compound is unlikely to be actively effluxed from the brain. These findings underscore the therapeutic potential of chromeno[3,4-<i>b</i>]xanthone as multifunctional agents for AD, broadening the chemical space of small-molecule exploration.</p>","PeriodicalId":13,"journal":{"name":"ACS Chemical Neuroscience","volume":"16 16","pages":"3184–3203"},"PeriodicalIF":3.9,"publicationDate":"2025-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144792939","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}