Eight-Membered-Ring Lactams – New Scaffolds for Combinatorial Chemistry Prepared by Ring-Expansion of 1,4-Diketones with Primary Amines
作者:Rebekka Pflantz、Patrick Tielmann、Michael Rössle、Christoph Hoenke、Jens Christoffers
DOI:10.1002/ejoc.200700263
日期:2007.7
Eight-membered-ring lactams were prepared by the Bi-catalyzed reaction of 1,4-diketones with primary amines. These lactams define a new type of non-planar molecular scaffold with three points allowing for diversification, which were evaluated as the basis for combinatorial library synthesis. For this reason, reaction conditions were optimized, and the scope and limitations were investigated. After
八元环内酰胺是通过 1,4-二酮与伯胺的双催化反应制备的。这些内酰胺定义了一种新型的非平面分子支架,具有三个允许多样化的点,这些点被评估为组合库合成的基础。为此,对反应条件进行了优化,并对范围和局限性进行了研究。在双催化反应之后,通过酯皂化和随后与 HATU 和另一种伯胺形成酰胺实现了进一步的多样化。模型库的代表性示例显示在 DMSO 中具有足够的稳定性和在水性缓冲液中的溶解度,由于我们的库生产的内部组合化学标准,这是强制性的先决条件。(© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2007)