Design, synthesis, and biological evaluation of novel indoles targeting the influenza PB2 cap binding region by McGowan, DC, Balemans, W, Embrechts, W, Motte, M, Keown, JR, Buyck, C, Corbera, J, Funes, M, Moreno, L, Cooymans, L, Tahri, A, Eymard, J, Stoops, B, Strijbos, R, van den Berg, J, Fodor, E, Grimes, JM, Koul, A, Jonckers, THM, Raboisson, P, Guillemont, J