| 摘要 |
New peptides represented by the following general formula(wherein X is OH or NH2, R is an amino acid residue selected from Arg, His, Lys, Methyl-Arg or Methyl-Tyr, n is an integer of 1-4, and in the case that n is 2-4, R may be identical with or different from each other) and an anti-dementia drug which contains one or more of these new peptides and has a high blood brain barrier (BBB) permeability and furthermore is low in a side effect.
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