Enantiomeric propanolamines have been identified as a new class of NR2B-selective NMDA receptor antagonists. The most effective agents are biaryl structures, synthesized in six steps with overall yields ranging from 11− 64%. The compounds are potent and selective inhibitors of NR2B-containing recombinant NMDA receptors with IC50 values between 30− 100 nM. Potency is strongly controlled by substitution on both rings and the centrally ...