1,3-Adamantanediamine and nipecotic acid were used as scaffolds in des
igning beta-turn peptide mimetic derivatives 3 and 5, respectively, ta
rgeted as fibrinogen-GPIIB/IIA antagonists. The design focused on the
406-409 KQAG region of the gamma-chain of fibrinogen which appears as
a beta-turn in solution NMR structures of Fg-gamma385-411.