Dynamic combinatorial libraries of hydrazone-linked pseudo-peptides: dependence of diversity on building block structure and chirality
作者:Jingyuan Liu、Kevin R. West、Chantelle R. Bondy、Jeremy K. M. Sanders
DOI:10.1039/b617217b
日期:——
Expanding on our earlier building block architecture [(MeO)2CH–Linker–Pro–X–NHNH2 where X = Phe, Cha], we have produced a series of new pseudo-dipeptides [(MeO)2CH–Linker–Pro–X–NHNH2 where X = Val, Leu, Ile, Ala] for use in hydrazone-based dynamic combinatorial libraries (DCLs); reverse order analogues [Phe-Pro and Val-Pro] and two enantio-analogues [Pro-Phe and Pro-Val] were also prepared. The behaviours of these building blocks in DCLs, as single components and in mixtures, were studied systematically using HPLC and mass spectrometry in order to gain insight into the relationship between building block structure and good library diversity. Subtle changes in building block structure lead to significant changes in library distribution and in the ability to produce diverse libraries in mixtures.
基于我们早期的构建模块架构[(MeO)2CH–Linker–Pro–X–NHNH2,其中X = Phe, Cha],我们合成了一系列新的伪二肽[(MeO)2CH–Linker–Pro–X–NHNH2,其中X = Val, Leu, Ile, Ala],用于基于脒的动态组合库(DCLs);反向顺序类似物[Phe-Pro和Val-Pro]以及两种对映异构类似物[Pro-Phe和Pro-Val]也被制备。我们系统地研究了这些构建模块在DCL中的行为,无论是单独成分还是混合物,都使用了高效液相色谱法和质谱法,以深入了解构建模块结构与良好库多样性之间的关系。构建模块结构的细微变化导致了库分布的显著变化以及在混合物中产生多样性库的能力的变化。