As PET candidate tracers for EGFr-TK, five 4-(anilino)quinazoline derivativ
es, each fluorinated in the aniline moiety, were prepared. Each was tested
in vitro for inhibition of EGFr autophosphorylation in A431 cell line. The
leading compounds were then radiolabeled with F-18 and cell binding experim
ents, biodistribution and PET studies in A431 tumor-bearing mice were perfo
rmed. Metabolic studies were carried out in a mice control group. From our
results, we concluded that while in vitro experiments indicates efficacy of
4-(anilino)quinazoline compounds, kinetic factors and rapid blood clearanc
e make them unsuitable as tracers for nuclear medicine imaging of EGFr-TK.
(C) 2001 Elsevier Science Inc. All rights reserved.