For what it's worth:

Ampakines are a new class of compounds known to enhance attention span and alertness, and facilitate learning and memory. ...

Unlike earlier stimulants (e.g. caffeine, methylphenidate (Ritalin), and the amphetamines), ampakines do not seem to have unpleasant, long-lasting side effects such as sleeplessness.

Apparently, only the military is interested in its mind-enhancing effects. Any chemists here interested in a start-up? ;-)