Psoromic acid derivatives: a new family of small-molecule pre-mRNA splicing inhibitors discovered by a stage-specific high-throughput in vitro splicing assay - Samatov, T R; Wolf, A; Odenwälder, P; Bessonov, S; Deraeve, C; Bon, R S; Waldmann, H; Lührmann, R (Chembiochem, 2012)