Highly potent inhibitors of the Grb2-SH2 domain have been synthesized. They
share the common sequence: Ac-Pmp-Ac(6)c-Asn-NH-(3-indolyl-propyl). Differ
ent substituents at the 3-indolyl-propylamine C-terminal group were explore
d to further improve the activity. This is the first example of inhibitors
of SH2 domains with sub-nanomolar affinity reported to date. (C) 1999 Elsev
ier Science Ltd. All rights reserved.