PIK-93 is the two most potent and multitargeted synthetic PI3-K inhibitors that have been reported. PIK-93 inhibits PI3Kγ and PI4KIIIβ, with IC50 values of 16 nM and 19 nM, respectively. PIK-93 also inhibits other members of PI3Ks, including PI3Kα, β, and δ, with IC50 values of 39 nM, 0.59 uM, and 0.12 uM, respectively. PIK-93 shows no obvious inhibitory effect against a panel of other kinases, even at a concentration of 10 uM. PIK-93 was identified as a potent anti-enterovirus compound. PIK-93 targeted PI4Kβ to inhibit interaction of viral 3D polymerase and phosphatidylinositol 4-phosphate on the reorganized membrane vesicle for viral replication complex formation. PIK-93 may provide a basis for the design of new classes of therapeutics against viral RNA replication.