3-Hydroxyquinolin-2(1H)-ones As Inhibitors of Influenza A Endonuclease.
Sagong, H.Y., Parhi, A., Bauman, J.D., Patel, D., Vijayan, R.S., Das, K., Arnold, E., LaVoie, E.J.(2013) ACS Med Chem Lett 4: 547-550
- PubMed: 24936242 
- DOI: https://doi.org/10.1021/ml4001112
- Primary Citation of Related Structures:  
4KIL - PubMed Abstract: 
Several 3-hydroxyquinolin-2(1H)-ones derivatives were synthesized and evaluated as inhibitors of 2009 pandemic H1N1 influenza A endonuclease. All five of the monobrominated 3-hydroxyquinolin(1H)-2-ones derivatives were synthesized. Suzuki-coupling of p-fluorophenylboronic acid with each of these brominated derivatives provided the respective p-fluorophenyl 3-hydroxyquinolin(1H)-2-ones. In addition to 3-hydroxyquinolin-2(1H)-one, its 4-methyl, 4-phenyl, 4-methyl-7-(p-fluorophenyl), and 4-phenyl-7-(p-fluorophenyl) derivatives were also synthesized. Comparative studies on their relative activity revealed that both 6- and 7-(p-fluorophenyl)-3-hydroxyquinolin-2(1H)-one are among the more potent inhibitors of H1N1 influenza A endonuclease. An X-ray crystal structure of 7-(p-fluorophenyl)-3-hydroxyquinolin-2(1H)-one complexed to the influenza endonuclease revealed that this molecule chelates to two metal ions at the active site of the enzyme.
Organizational Affiliation: 
Department of Medicinal Chemistry, Ernest Mario School of Pharmacy, Rutgers, The State University of New Jersey , Piscataway, New Jersey 08854-8020, United States.