Synthesis and γ-secretase activity of APP substrate-based hydroxyethylene dipeptide isosteres
作者:Alan Nadin、Andrew P. Owens、José L. Castro、Timothy Harrison、Mark S. Shearman
DOI:10.1016/s0960-894x(02)00840-5
日期:2003.1
Two new APP substrate-based hydroxyethylene isosteres (AT and VI) were prepared and their dipeptide conjugates shown not to inhibit the gamma-secretase-mediated formation of either Abeta1-40 or Abeta1-42. The FG isostere and a des-hydroxy hydroxyethylene isostere also gave inactive compounds. Conversely, a number of compounds containing the intact substrate-unrelated Phe-Phe (FF) hydroxyethylene isostere
制备了两个新的基于APP底物的羟乙烯等聚体(AT和VI),显示它们的二肽共轭物不抑制γ-分泌酶介导的Abeta1-40或Abeta1-42的形成。FG等排物和脱羟基羟乙烯等排物也得到非活性化合物。相反,许多含有完整的底物无关的Phe-Phe(FF)羟乙烯等排物的化合物被证明是有效的抑制剂(ED(50)= 14-732 nM)。这些结果表明,控制γ-分泌酶抑制剂基于底物设计的因素比最初想像的要复杂。