Cyclic N-propargyl α-peptoids of various sizes were prepared by way of macrocyclizations of linear N-substituted oligoglycines. These compounds were used as molecular platforms to synthesize a series of iminosugar clusters with different valency and alkyl spacer lengths by means of Cu(I)-catalysed azide–alkyne cycloadditions. Evaluation of these compounds as α-mannosidase inhibitors led to significant multivalent effects and further demonstrated the decisive influence of scaffold rigidity on binding affinity enhancements.
各种大小的环状N-
丙炔基α-肽酰基通过线性N-取代寡甘
氨酸的大环化制备。通过Cu(I)-催化的偶联反应,这些化合物被用作合成一系列具有不同价性和烷基间隔长度的
亚胺糖簇的分子平台。对这些化合物作为
α-甘露糖苷酶抑制剂的评估表明了显著的多价效应,并进一步证明了支架刚性对结合亲和力增强的决定性影响。