Synthesis, radiolabelling and initial biological characterisation of 18F-labelled xanthine derivatives for PET imaging of Eph receptors - Pretze, Marc; Neuber, Christin; Kinski, Elisa; Belter, Birgit; Köckerling, Martin; Caflisch, Amedeo; Steinbach, Jörg; Pietzsch, Jens; Mamat, Constantin (Organic & biomolecular chemistry, 2020)