respectively. These were converted into oligomers (5, 7, and 9-mers) using an Fmoc-based solid-phase protocol and evaluated as cellular transporters. Hybrid oligomers, constructed of alternating units of the aminohexyl and amino-TEG monomers, were non-cytotoxic and exhibited remarkable cellular uptake activity compared to the analogous fully TEG or lysine-like compounds.
拟肽,例如寡-N-烷基甘
氨酸(类肽),由于其强大的蛋白
水解稳定性和降低的细胞毒性,因此是传统阳离子穿透细胞肽(例如R 9)的有吸引力的替代物。这里,单体Ñ -alkylglycines,结合
氨基官能化己基或
三甘醇(T
EG)侧链,分别通过三步骤连续流动反应序列合成,得到单体Ñ -Fmoc-(6-叔丁氧羰
氨基己基)甘
氨酸和ñ-Fmoc-((2-(2-Boc-
氨基乙氧基)乙氧基)乙基)甘
氨酸的总收率分别为49%和41%。使用基于Fmoc的固相方案将它们转化为寡聚体(5、7和9聚体),并作为细胞转运蛋白进行评估。由
氨基己基和
氨基-T
EG单体的交替单元构成的杂化低聚物,与类似的完全T
EG或赖
氨酸样化合物相比,具有无细胞毒性,并显示出显着的细胞摄取活性。