A method for enhancing learning and memory or treating amnesia. The method includes
administrating to a subject in need thereof a compound of the formula (I):
##STR1##
##STR2##
- each of Ar1, Ar2, and Ar3, independently,
is phenyl, thienyl, furyl, or pyrrolyl; each of R1, R2, R3,
R4, R5, and R6, independently, is H, nitro, halogen,
R, OH, OR, C(O)OH, C(O)OR, C(O)SH, C(O)SR, C(O)NH2, C(O)NHR, C(O)NRR,
ROH, ROR, RSH, RSR, ROC(O)ROH, NHR, NRR, RNHR,
or RNRR"; or R1 and R2 together, R3 and
R4 together, or R5 and R6 together are ORO; wherein
each of R, R, and R", independently is C1C6 alkyl;
and n is 1, 2, or 3. The compound is in an effective amount for enhancing learning
and memory or treating amnesia.
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