Patent ID: 7049334

Claim:
A method for treating amnesia, comprising administrating to a subject in need thereof an amount effective to treat amnesia of a compound of the formula: wherein A is H, R, or Ar 1 is phenyl; each of Ar 2 and Ar 3 , independently, is phenyl, thienyl, furyl, or pyrrolyl; each of R 1 , R 2 , R 3 , R 4 , R 5 , and R 6 , independently, is H, nitro, halogen, R, OH, OR, C(O)OH, C(O)OR, C(O)SH, C(O)SR, C(O)NH 2 , C(O)NHR, C(O)NRR′, ROH, ROR′, RSH, RSR′, ROC(O)R′OH, NHR, NRR′, RNHR′, or RNR′R″; or R 1 and R 2 together, R3 and R 4 together, or R 5 and R 6 together are ORO; wherein each of R, R′, and R″, independently is C 1 ˜C 6 alkyl; and n is 1, 2, or 3.