申请人:Triad National Security, LLC
公开号:US20200131140A1
公开(公告)日:2020-04-30
The present disclosure provides improved methods for controlled cyclization of peptoid dimers to form N,N′-2,5-diketopiperazines (N,N′-2,5-DKPs) with significant selectivity. In at least some examples, selectivity is based on a serendipitous conglomeration of slow exchange of amide rotamers, steric repulsion from the degree of α-substitution, and the geometric bulk of an amine nucleophile. By varying reaction conditions, the selectivity of the reaction and formation of a particular N,N′-2,5-DKP can be switched. The cyclization works in the presence of a variety of protection groups and diverse functionalities. The teachings herein provide techniques for synthesizing N,N′-2,5-DKPs that can be readily docked with drug candidates for shuttling across the blood brain barrier. This method provides a facile way to produce substituted DKPs containing groups ready for post-modification to include docking drug candidates.
本公开提供了改进的方法,用于控制肽烷二聚体的环化,形成具有显著选择性的N,N'-2,5-二酮哌嗪(N,N'-2,5-DKP)。在至少一些示例中,选择性基于酰胺旋转体的缓慢交换的偶然混合,α-取代程度的立体排斥以及胺亲核试剂的几何体积。通过改变反应条件,可以切换反应的选择性和特定N,N'-2,5-DKP的形成。该环化反应在各种保护基和多样化的官能团存在下进行。本文提供了用于合成可轻松与药物候选物交会以穿越血脑屏障的N,N'-2,5-DKP的技术。该方法提供了一种简便的方法来产生含有用于后修饰的基团的取代DKP,以包括交会药物候选物。