LY503430 is a AMPA receptor potentiator with oral activity. LY503430 has both nootropic and neuroprotective effects, reducing brain damage caused by 6-hydroxydopamine or MPTP.
Neramexane is an NMDA antagonist with neuroprotective effects. Neramexane has antidepressant and nootropic actions. It also acts as a nicotinic acetylcholine receptor antagonist.