Synthesis of New Arylidene 2,5-Diketopiperazines and Evaluation of their Anti-Acetylcholinesterase, Anti-xanthine Oxidase, Anti-diabetic and Cytotoxic Activities
作者:Mohamed A. Belkacem、Hichem B. Jannet、Hicham Ferhout、Laila Mzali、Jalloul Bouajila
DOI:10.2174/1573406413666170425165659
日期:2017.11.8
5-Diketopiperazine derivatives are considered to be an important classe of cyclic peptides due to their wide range of biological activities. OBJECTIVES Synthesis of a new series of protected 2,5-diketopiperazine derivatives and evaluation of their in vitro biological activities. METHODS A series of new mono-protected arylidene 2,5-diketopiperazine derivatives 3a-p have been prepared via Claisen-Schmidt condensation
背景技术2,5-二酮哌嗪衍生物由于其广泛的生物活性而被认为是重要的一类环肽。目的合成一系列新的受保护的2,5-二酮哌嗪衍生物,并对其体外生物活性进行评估。方法通过N,N-二乙酰基-二酮哌嗪1与一系列取代的芳醛的克莱森-施密特缩合反应,制备了一系列新的单保护的亚芳基2,5-二酮哌嗪衍生物3a-p。所有制备的化合物均通过1D和2D 1H / 13C NMR和ESI-HRMS进行表征,并筛选了其体外乙酰胆碱酯酶,黄嘌呤氧化酶和α-淀粉酶的抑制作用以及细胞毒性(HCT-116,MCF-7和OVCAR-3)活性。结果在这些化合物中,对于带有苯氧基部分的化合物3f,获得了对α-淀粉酶的最大活性(抑制百分比(PI)= 57.8±1.9%)。此外,结果表明一些亚芳基2,5-二酮哌嗪3对所用的三种细胞系表现出显着的细胞毒性活性。化合物3g(4-PhCH2O.Ph)被发现对HCT-116,MCF-7和OVCA