One of the purposes of the present invention is to provide a heterocyclic derivative that has an IAP (particularly XIAP) binding (inhibiting) activity. Another of the purposes of the present invention is to provide a heterocyclic derivative that has an IAP (particularly XIAP) binding (inhibiting) activity and exhibits a protein degradation induction activity. The present invention provides a compound represented by formula (I) (the symbols in the formula are as defined in the present Description) and salts thereof.
本发明的一个目的是提供一种具有IAP(特别是XIAP)结合(抑制)活性的杂环衍
生物。本发明的另一个目的是提供一种具有IAP(特别是XIAP)结合(抑制)活性并表现出蛋白质降解诱导活性的杂环衍
生物。本发明提供了一种由式(I)表示的化合物(式中的符号如本说明书中定义)及其盐。