Metal-ion induced amplification of three receptors from dynamic combinatorial libraries of peptide-hydrazonesElectronic supplementary information (ESI) available: NMR and IR data of the Li+ complexes of (mPF)2, (pPF)3 and (pPC)3. See http://www.rsc.org/suppdata/ob/b3/b300956d/
作者:Sarah L. Roberts、Ricardo L. E. Furlan、Sijbren Otto、Jeremy K. M. Sanders
DOI:10.1039/b300956d
日期:2003.4.23
Three building blocks of general structure (MeO)2 CH-aromatic linker-Pro-amino acid-NHNH2 have been prepared and tested in acid-catalysed dynamic combinatorial libraries. Exposure of these libraries to LiI and NaI led to the amplification of three macrocyclic pseudopeptide receptors. The receptors were isolated and their interactions with LiI and NaI were analysed using NMR, IR and ITC. Binding of
已制备了三种通用结构(MeO)2 CH-芳族接头-Pro-氨基酸-NHNH2的结构单元,并在酸催化的动态组合库中进行了测试。这些文库暴露于LiI和NaI导致扩增了三个大环假肽受体。分离受体并使用NMR,IR和ITC分析它们与LiI和NaI的相互作用。金属离子与受体的结合始终是由熵驱动的。然而,发现所有受体都是柔性的,伴随客体结合而发生实质性构象重排。通过合理的设计很难获得这种类型的受体,而且动态组合化学可以轻松访问这些具有挑战性的分子这一事实说明了动态方法的强大功能。