2-Nonylquinolin-4(1H)-one

2-Nonylquinolin-4(1H)-one is a quinolone alkaloid that has been found in P. aeruginosa and has diverse biological activities.{58183,58184,58185,58188} It reduces infection of Huh7.5 cells by hepatitis C virus (HCV) with an IC50 value of 1.4 µg/ml.{58183} 2-Nonylquinolin-4(1H)-one (50 and 100 µg/ml) is also active against L. gongylophorus, a symbiotic fungus of the agricultural pest A. sexdens (leaf-cutting ant).{58184} It inhibits activation of nuclear factor of activated T cells (NFAT) induced by phorbol 12-myristate 13-acetate (TPA; Item No. 10008014) and the calcium ionophore A23187 (Item No. 11016) in Jurkat cells (IC50 = 3.44 µM), but not LPS-induced NF-kB activation in RAW 264.7 cells (IC50 = >100 µM), in reporter assays.{58185} This compound is expected to exist in one or both tautomeric forms, depending on experimental conditions.