G. Thoma et al., Synthesis and biological evaluation of a sialyl Lewis X mimic with significantly improved E-selectin inhibition, BIOORG MED, 11(7), 2001, pp. 923-925
The synthesis of the highly potent E-selectin inhibitor 5 is described. Sia
lyl Lewis X mimic 5 was rationally designed by combining two previously dis
closed beneficial sLe(x) modifications in a single molecule. The compound w
as found to be 30-fold more potent than sLe(x) in a static, cell-free equil
ibrium assay. Furthermore, compound 5 was highly active (IC50 = 10 muM) in
a dynamic non-equilibrium assay in which sLe(x) did not inhibit neutrophil
rolling at up to 1000 muM. (C) 2001 Elsevier Science Ltd. All rights reserv
ed.