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10.1016/j.bmcl.2021.127906

http://scihub22266oqcxt.onion/10.1016/j.bmcl.2021.127906
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suck abstract from ncbi


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pmid33689873      Bioorg+Med+Chem+Lett 2021 ; 40 (ä): 127906
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  • Application of niclosamide and analogs as small molecule inhibitors of Zika virus and SARS-CoV-2 infection #MMPMID33689873
  • Shamim K; Xu M; Hu X; Lee EM; Lu X; Huang R; Shah P; Xu X; Chen CZ; Shen M; Guo H; Chen L; Itkin Z; Eastman RT; Shinn P; Klumpp-Thomas C; Michael S; Simeonov A; Lo DC; Ming GL; Song H; Tang H; Zheng W; Huang W
  • Bioorg Med Chem Lett 2021[May]; 40 (ä): 127906 PMID33689873show ga
  • Zika virus has emerged as a potential threat to human health globally. A previous drug repurposing screen identified the approved anthelminthic drug niclosamide as a small molecule inhibitor of Zika virus infection. However, as antihelminthic drugs are generally designed to have low absorption when dosed orally, the very limited bioavailability of niclosamide will likely hinder its potential direct repurposing as an antiviral medication. Here, we conducted SAR studies focusing on the anilide and salicylic acid regions of niclosamide to improve physicochemical properties such as microsomal metabolic stability, permeability and solubility. We found that the 5-bromo substitution in the salicylic acid region retains potency while providing better drug-like properties. Other modifications in the anilide region with 2'-OMe and 2'-H substitutions were also advantageous. We found that the 4'-NO(2) substituent can be replaced with a 4'-CN or 4'-CF(3) substituents. Together, these modifications provide a basis for optimizing the structure of niclosamide to improve systemic exposure for application of niclosamide analogs as drug lead candidates for treating Zika and other viral infections. Indeed, key analogs were also able to rescue cells from the cytopathic effect of SARS-CoV-2 infection, indicating relevance for therapeutic strategies targeting the COVID-19 pandemic.
  • |Animals[MESH]
  • |Antiviral Agents/chemical synthesis/metabolism/*pharmacology[MESH]
  • |Binding Sites[MESH]
  • |Chlorocebus aethiops[MESH]
  • |Drug Stability[MESH]
  • |Humans[MESH]
  • |Microbial Sensitivity Tests[MESH]
  • |Microsomes, Liver/metabolism[MESH]
  • |Molecular Docking Simulation[MESH]
  • |Molecular Structure[MESH]
  • |Niclosamide/*analogs & derivatives/metabolism/*pharmacology[MESH]
  • |Protein Binding[MESH]
  • |Rats[MESH]
  • |SARS-CoV-2/*drug effects[MESH]
  • |Serine Endopeptidases/chemistry/metabolism[MESH]
  • |Structure-Activity Relationship[MESH]
  • |Vero Cells[MESH]
  • |Viral Nonstructural Proteins/chemistry/metabolism[MESH]
  • |Viral Proteins/chemistry/metabolism[MESH]


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